Oracle Fusion Middleware PL/SQL Web Toolkit Reference, 11g Release 1 (11.1.1)

11g Release 1 (11.1.1)

E12042-01

Contents

List of Tables

Title and Copyright Information

Preface

- Audience

- Documentation Accessibility

- Related Documents

- Conventions

1 The htp and htf Packages

- 1.1 Summary

- 1.2 htp.address

- 1.3 htp.anchor, htp.anchor2

- 1.4 htp.appletopen, htp.appletclose

- 1.5 htp.area

- 1.6 htp.base

- 1.7 htp.basefont

- 1.8 htp.bgsound

- 1.9 htp.big

- 1.10 htp.blockquoteOpen, htp.blockquoteClose

- 1.11 htp.bodyOpen, htp.bodyClose

- 1.12 htp.bold

- 1.13 htp.center

- 1.14 htp.centerOpen, htp.centerClose

- 1.15 htp.cite

- 1.16 htp.code

- 1.17 htp.comment

- 1.18 htp.dfn

- 1.19 htp.dirlistOpen, htp.dirlistClose

- 1.20 htp.div

- 1.21 htp.dlistOpen, htp.dlistClose

- 1.22 htp.dlistDef

- 1.23 htp.dlistTerm

- 1.24 htp.download_file

- 1.25 htp.get_download_files_list

- 1.26 htp.emphasis, htp.em

- 1.27 htf.escape_sc

- 1.28 htf.escape_url

- 1.29 htp.fontOpen, htp.fontClose

- 1.30 htf.format_cell

- 1.31 htp.formCheckbox

- 1.32 htp.formOpen, htp.formClose

- 1.33 htp.formFile

- 1.34 htp.formHidden

- 1.35 htp.formImage

- 1.36 htp.formPassword

- 1.37 htp.formRadio

- 1.38 htp.formReset

- 1.39 htp.formSelectOpen, htp.formSelectClose

- 1.40 htp.formSelectOption

- 1.41 htp.formSubmit

- 1.42 htp.formText

- 1.43 htp.formTextarea, htp.formTextarea2

- 1.44 htp.formTextareaOpen, htp.formTextareaOpen2, htp.formTextareaClose

- 1.45 htp.frame

- 1.46 htp.framesetOpen, htp.framesetClose

- 1.47 htp.headOpen, htp.headClose

- 1.48 htp.header

- 1.49 htp.htmlOpen, htp.htmlClose

- 1.50 htp.img, htp.img2

- 1.51 htp.isindex

- 1.52 htp.italic

- 1.53 htp.keyboard, htp.kbd

- 1.54 htp.line, htp.hr

- 1.55 htp.linkRel

- 1.56 htp.linkRev

- 1.57 htp.listHeader

- 1.58 htp.listingOpen, htp.listingClose

- 1.59 htp.listItem

- 1.60 htp.mailto

- 1.61 htp.mapOpen, htp.mapClose

- 1.62 htp.menulistOpen, htp.menulistClose

- 1.63 htp.meta

- 1.64 htp.nl, htp.br

- 1.65 htp.nobr

- 1.66 htp.noframesOpen, htp.noframesClose

- 1.67 htp.olistOpen, htp.olistClose

- 1.68 htp.para, htp.paragraph

- 1.69 htp.param

- 1.70 htp.plaintext

- 1.71 htp.preOpen, htp.preClose

- 1.72 htp.print, htp.prn

- 1.73 htp.prints, htp.ps

- 1.74 htp.s

- 1.75 htp.sample

- 1.76 htp.script

- 1.77 htp.small

- 1.78 htp.strike

- 1.79 htp.strong

- 1.80 htp.style

- 1.81 htp.sub

- 1.82 htp.sup

- 1.83 htp.tableCaption

- 1.84 htp.tableData

- 1.85 htp.tableHeader

- 1.86 htp.tableOpen, htp.tableClose

- 1.87 htp.tableRowOpen, htp.tableRowClose

- 1.88 htp.teletype

- 1.89 htp.title

- 1.90 htp.ulistOpen, htp.ulistClose

- 1.91 htp.underline

- 1.92 htp.variable

- 1.93 htp.wbr

2 The owa_cache Package

- 2.1 Summary

- 2.2 owa_cache.disable

- 2.3 owa_cache.set_expires

- 2.4 owa_cache.set_cache

- 2.5 owa_cache.set_not_modified

- 2.6 owa_cache.get_level

- 2.7 owa_cache.get_etag

3 The owa_cookie Package

- 3.1 Summary

- 3.2 owa_cookie.cookie data type

- 3.3 owa_cookie.get function

- 3.4 owa_cookie.get_all procedure

- 3.5 owa_cookie.remove procedure

- 3.6 owa_cookie.send procedure

4 The owa_image Package

- 4.1 Summary

- 4.2 owa_image.NULL_POINT package variable

- 4.3 owa_image.point data type

- 4.4 owa_image.get_x function

- 4.5 owa_image.get_y function

5 The owa_opt_lock Package

- 5.1 Summary

- 5.2 owa_opt_lock.vcArray data type

- 5.3 owa_opt_lock.checksum function

- 5.4 owa_opt_lock.get_rowid function

- 5.5 owa_opt_lock.store_values procedure

- 5.6 owa_opt_lock.verify_values function

6 The owa_pattern Package

- 6.1 Subprograms

- 6.2 Regular Expressions

- 6.2.1 Wildcard Tokens

- 6.2.2 Quantifiers

- 6.2.3 Flags

- 6.3 owa_pattern.amatch function

- 6.4 owa_pattern.change function and procedure

- 6.5 owa_pattern.getpat procedure

- 6.6 owa_pattern.match function

- 6.7 owa_pattern.pattern data type

7 The owa_sec Package

- 7.1 Summary

- 7.2 owa_sec.get_client_hostname function

- 7.3 owa_sec.get_client_ip function

- 7.4 owa_sec.get_password function

- 7.5 owa_sec.get_user_id function

- 7.6 owa_sec.set_authorization procedure

- 7.7 owa_sec.set_protection_realm procedure

8 The owa_text Package

- 8.1 Summary

- 8.2 owa_text.add2multi procedure

- 8.3 owa_text.multi_line data type

- 8.4 owa_text.new_row_list

- 8.5 owa_text.print_multi procedure

- 8.6 owa_text.print_row_list procedure

- 8.7 owa_text.row_list data type

- 8.8 owa_text.stream2multi procedure

- 8.9 owa_text.vc_arr data type

9 The owa_util Package

- 9.1 Summary

- 9.2 owa_util.bind_variables function

- 9.3 owa_util.calendarprint procedure

- 9.4 owa_util.cellsprint procedure

- 9.5 owa_util.choose_date procedure

- 9.6 owa_util.dateType data type

- 9.7 owa_util.get_cgi_env function

- 9.8 owa_util.get_owa_service_path function

- 9.9 owa_util.get_procedure function

- 9.10 owa_util.http_header_close procedure

- 9.11 owa_util.ident_arr data type

- 9.12 owa_util.ip_address data type

- 9.13 owa_util.listprint procedure

- 9.14 owa_util.mime_header procedure

- 9.15 owa_util.print_cgi_env procedure

- 9.16 owa_util.redirect_url procedure

- 9.17 owa_util.showpage procedure

- 9.18 owa_util.showsource procedure

- 9.19 owa_util.signature procedure

- 9.20 owa_util.status_line procedure

- 9.21 owa_util.tablePrint function

- 9.22 owa_util.todate function

- 9.23 owa_util.who_called_me procedure

Index

List of Tables

- 1-1 htp.address

- 1-2 htp.anchor,htp.anchor2

- 1-3 htp.appleton, htp.appletclose

- 1-4 htp.area

- 1-5 htp.base

- 1-6 htp.basefont

- 1-7 htp.bgsound

- 1-8 htp.big

- 1-9 htp.blockquoteOpen, htp.blockquoteClose

- 1-10 htp.bodyOpen, htp.bodyClose

- 1-11 htp.bold

- 1-12 htp.center

- 1-13 htp.centerOpen, htp.centerClose

- 1-14 htp.cite

- 1-15 htp.code

- 1-16 htp.comment

- 1-17 htp.dfn

- 1-18 htp.dirlistOpen, htp.dirlistClose

- 1-19 htp.div

- 1-20 htp.dlistOpen, htp.dlistClose

- 1-21 htp.dlistDef

- 1-22 htp.dlistTerm

- 1-23 htp.download_file

- 1-24 htp.get_download_files_list

- 1-25 htp.emphasis, htp.em

- 1-26 htf.escape_sc

- 1-27 htf.escape_url

- 1-28 htp.fontOpen,htp.fontClose

- 1-29 htf.format_cell

- 1-30 htp.formCheckbox

- 1-31 htp.formOpen, htp.formClose

- 1-32 htp.formFile

- 1-33 htp.formHidden

- 1-34 htp.formImage

- 1-35 htp.formPassword

- 1-36 htp.formRadio

- 1-37 htp.formReset

- 1-38 htp.formSelectOpen,htp.formSelectClose

- 1-39 htp.formSelectOption

- 1-40 htp.formSubmit

- 1-41 htp.formText

- 1-42 htp.formTextarea, htp.formTextarea2

- 1-43 htp.formTextareaOpen, htp.formTextareaOpen2, htp.formTextareaClose

- 1-44 htp.frame

- 1-45 htp.framesetOpen, htp.framesetClose

- 1-46 htp.headOpen, htp.headClose

- 1-47 htp.header

- 1-48 htp.htmlOpen, htp.htmlClose

- 1-49 htp.img, htp.img2

- 1-50 htp.isindex

- 1-51 htp.italic

- 1-52 htp.keyboard, htp.kbd

- 1-53 htp.line, htp.hr

- 1-54 htp.linkRel

- 1-55 htp.linkRev

- 1-56 htp.listHeader

- 1-57 htp.listingOpen, htp.listingClose

- 1-58 htp.listltem

- 1-59 htp.mailto

- 1-60 htp.mapOpen, htp.mapClose

- 1-61 htp.menulistOpen, htp.menulistClose

- 1-62 htp.meta

- 1-63 htp.nl, htp.br

- 1-64 htp.nobr

- 1-65 htp.noframesOpen, htp.noframesClose

- 1-66 htp.olistOpen, htp.olistClose

- 1-67 htp.para, htp.paragraph

- 1-68 htp.param

- 1-69 htp.plaintext

- 1-70 htp.preOpen, htp.preClose

- 1-71 htp.print, htp.prn

- 1-72 htp.prints, htp.ps

- 1-73 htp.s

- 1-74 htp.sample

- 1-75 htp.script

- 1-76 htp.small

- 1-77 htp.strike

- 1-78 htp.strong

- 1-79 htp.style

- 1-80 htp.sub

- 1-81 htp.sup

- 1-82 htp.tableCaption

- 1-83 htp.tableData

- 1-84 htp.tableHeader

- 1-85 htp.tableOpen, htp.tableClose

- 1-86 htp.tableRowOpen, htp.tableRowClose

- 1-87 htp.teletype

- 1-88 htp.title

- 1-89 htp.ulistOpen, htp.ulistClose

- 1-90 htp.underline

- 1-91 htp.variable

- 1-92 htp.wbr

- 2-1 owa_cache.disable

- 2-2 owa_cache.set_expires

- 2-3 owa_cache.set_cache

- 2-4 owa_cache.set_not_modified

- 2-5 owa_cache.get_level

- 2-6 owa_cache.get_etag

- 3-1 owa_cookie.cookie data type

- 3-2 owa_cookie.get function

- 3-3 owa_cookie.get_all procedures

- 3-4 owa_cookie.remove procedure

- 3-5 owa_cookie.send procedure

- 4-1 owa_image.NULL_POINT package variable

- 4-2 owa_image.point data type

- 4-3 owa_image.get_x function

- 4-4 owa_image.get_y function

- 5-1 owa_opt_lock.vcArray data type

- 5-2 owa_opt_lock.checksum function

- 5-3 owa_opt_lock.get_rowid function

- 5-4 owa_opt_lock.store_values procedure

- 5-5 owa_opt_lock.verify_values function

- 6-1 Wildcard tokens recognized by owa_pattern package

- 6-2 Quantifiers

- 6-3 Flags

- 6-4 owa_pattern.amatch function

- 6-5 owa_pattern.change function and procedure

- 6-6 owa_pattern.getpat procedure

- 6-7 owa_pattern.match function

- 6-8 owa_pattern.pattern data type

- 7-1 owa_sec.get_client_hostname function

- 7-2 owa_sec.get_client_ip function

- 7-3 owa_sec.get_password function

- 7-4 owa_sec.get_user_id function

- 7-5 owa_sec.set_authorization procedure

- 7-6 owa_sec.set_protection_realm procedure

- 8-1 owa_text.add2multi procedure

- 8-2 owa_text.multi_line data type

- 8-3 owa_text.new_row_list

- 8-4 owa_text.print_multi procedure

- 8-5 owa_text.print_row_list procedure

- 8-6 owa_text.row_list data type

- 8-7 owa_text.stream2multi procedure

- 8-8 owa_text.vc_arr data type

- 9-1 owa_util.bind_variables function

- 9-2 owa_util.calendarprint procedure

- 9-3 owa_util.cellsprint procedure

- 9-4 owa_util.choose_date procedure

- 9-5 owa_util.dateType data type

- 9-6 owa_util.get_cgi_env function

- 9-7 owa_util.get_owa_service_path function

- 9-8 owa_util.get_procedure function

- 9-9 owa_util.http_header_close procedure

- 9-10 owa_util.ident_arr data type

- 9-11 owa_util.ip_address data type

- 9-12 owa_util.listprint procedure

- 9-13 owa_util.mime_header procedure

- 9-14 owa_util.print_cgi_env procedure

- 9-15 owa_util.redirect_url procedure

- 9-16 owa_util.showpage procedure

- 9-17 owa_util.showsource procedure

- 9-18 owa_util.signature procedure

- 9-19 owa_util.status_line procedure

- 9-20 owa_util.tablePrint function

- 9-21 owa_util.todate function

- 9-22 owa_util.who_called_me procedure

Oracle® Fusion Middleware

PL/SQL Web Toolkit Reference

11g Release 1 (11.1.1)

E12042-01

May 2009

Oracle Fusion Middleware PL/SQL Web Toolkit Reference, 11g Release 1 (11.1.1)

E12042-01

Copyright © 1996, 2009, Oracle and/or its affiliates. All rights reserved.

Primary Author: Showvik Roy Chowdhuri

Contributing Authors: Peter Lubbers, Pushkar Kapasi, Eric Lee

This software and related documentation are provided under a license agreement containing restrictions on use and disclosure and are protected by intellectual property laws. Except as expressly permitted in your license agreement or allowed by law, you may not use, copy, reproduce, translate, broadcast, modify, license, transmit, distribute, exhibit, perform, publish, or display any part, in any form, or by any means. Reverse engineering, disassembly, or decompilation of this software, unless required by law for interoperability, is prohibited.

The information contained herein is subject to change without notice and is not warranted to be error-free. If you find any errors, please report them to us in writing.

If this software or related documentation is delivered to the U.S. Government or anyone licensing it on behalf of the U.S. Government, the following notice is applicable:

U.S. GOVERNMENT RIGHTS Programs, software, databases, and related documentation and technical data delivered to U.S. Government customers are "commercial computer software" or "commercial technical data" pursuant to the applicable Federal Acquisition Regulation and agency-specific supplemental regulations. As such, the use, duplication, disclosure, modification, and adaptation shall be subject to the restrictions and license terms set forth in the applicable Government contract, and, to the extent applicable by the terms of the Government contract, the additional rights set forth in FAR 52.227-19, Commercial Computer Software License (December 2007). Oracle USA, Inc., 500 Oracle Parkway, Redwood City, CA 94065.

This software is developed for general use in a variety of information management applications. It is not developed or intended for use in any inherently dangerous applications, including applications which may create a risk of personal injury. If you use this software in dangerous applications, then you shall be responsible to take all appropriate fail-safe, backup, redundancy, and other measures to ensure the safe use of this software. Oracle Corporation and its affiliates disclaim any liability for any damages caused by use of this software in dangerous applications.

Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners.

This software and documentation may provide access to or information on content, products, and services from third parties. Oracle Corporation and its affiliates are not responsible for and expressly disclaim all warranties of any kind with respect to third-party content, products, and services. Oracle Corporation and its affiliates will not be responsible for any loss, costs, or damages incurred due to your access to or use of third-party content, products, or services.

Preface

The packages in the PL/SQL Web Toolkit are described in this reference manual:

Audience

This guide is a reference for the PL/SQL Web Toolkit for Oracle Fusion Middleware 11g Release 1 (11.1.1).

Documentation Accessibility

Our goal is to make Oracle products, services, and supporting documentation accessible to all users, including users that are disabled. To that end, our documentation includes features that make information available to users of assistive technology. This documentation is available in HTML format, and contains markup to facilitate access by the disabled community. Accessibility standards will continue to evolve over time, and Oracle is actively engaged with other market-leading technology vendors to address technical obstacles so that our documentation can be accessible to all of our customers. For more information, visit the Oracle Accessibility Program Web site at http://www.oracle.com/accessibility/.

Accessibility of Code Examples in Documentation

Screen readers may not always correctly read the code examples in this document. The conventions for writing code require that closing braces should appear on an otherwise empty line; however, some screen readers may not always read a line of text that consists solely of a bracket or brace.

Accessibility of Links to External Web Sites in Documentation

This documentation may contain links to Web sites of other companies or organizations that Oracle does not own or control. Oracle neither evaluates nor makes any representations regarding the accessibility of these Web sites.

Deaf/Hard of Hearing Access to Oracle Support Services

To reach Oracle Support Services, use a telecommunications relay service (TRS) to call Oracle Support at 1.800.223.1711. An Oracle Support Services engineer will handle technical issues and provide customer support according to the Oracle service request process. Information about TRS is available at http://www.fcc.gov/cgb/consumerfacts/trs.html, and a list of phone numbers is available at http://www.fcc.gov/cgb/dro/trsphonebk.html.

Related Documents

For more information, see the following manuals:

- Oracle Fusion Middleware User's Guide for mod_plsql

- Oracle Fusion Middleware Concepts

Conventions

The following text conventions are used in this document:

Convention

Meaning

boldface

Boldface type indicates graphical user interface elements associated with an action, or terms defined in text or the glossary.

italic

Italic type indicates book titles, emphasis, or placeholder variables for which you supply particular values.

monospace

Monospace type indicates commands within a paragraph, URLs, code in examples, text that appears on the screen, or text that you enter.

1 The htp and htf Packages

The htp (hypertext procedures) and htf (hypertext functions) packages generate HTML tags. For instance, the htp.anchor procedure generates the HTML anchor tag, <A>. The following commands generate a simple HTML document:

create or replace procedure hello AS
BEGIN
htp.htmlopen;           -- generates <HTML>
htp.headopen;           -- generates <HEAD>
htp.title('Hello');     -- generates <TITLE>Hello</TITLE>
htp.headclose;          -- generates </HEAD>
htp.bodyopen;           -- generates <BODY>
htp.header(1, 'Hello'); -- generates <H1>Hello</H1>
htp.bodyclose;          -- generates </BODY>
htp.htmlclose;          -- generates </HTML>
END;

For every htp procedure that generates HTML tags, there is a corresponding htf function with identical parameters. The function versions do not directly generate output in your web page. Instead, they pass their output as return values to the statements that invoked them. Use these functions when you need to nest calls. To look up htf functions, see the entry for the corresponding htp procedures.

To print the output of htf functions, call the functions from within the htp.print procedure. It then prints its parameters to the generated web page.

Note:

If you use values of the LONG data type in procedures such as htp.print, htp.prn, htp.prints, htp.pa or owa_util.cellsprint, only the first 32 K of the LONG data is used. The LONG data is bound to a varchar2 data type in the procedure or function.

1.1 Summary

HTML, HEAD, and BODY Tags

htp.htmlOpen, htp.htmlClose - generate <HTML> and </HTML>

htp.headOpen, htp.headClose - generate <HEAD> and </HEAD>

htp.bodyOpen, htp.bodyClose - generate <BODY> and </BODY>

Comment Tag

htp.comment - generates <!-- and -->

Tags in the <HEAD> Area

htp.base - generates <BASE>

htp.linkRel - generates <LINK> with the REL attribute

htp.linkRev - generates <LINK> with the REV attribute

htp.title - generates <TITLE>

htp.meta - generates <META>

htp.script - generates <SCRIPT>

htp.style - generates <STYLE>

htp.isindex - generates <ISINDEX>

Applet Tags

htp.appletopen, htp.appletclose - generate <APPLET> and </APPLET>

htp.param - generates <PARAM>

List Tags

htp.olistOpen, htp.olistClose - generate <OL> and </OL>

htp.ulistOpen, htp.ulistClose - generate <UL> and </UL>

htp.dlistOpen, htp.dlistClose - generate <DL> and </DL>

htp.dlistTerm - generates <DT>

htp.dlistDef - generates <DD>

htp.dirlistOpen, htp.dirlistClose - generate <DIR> and </DIR>

htp.listHeader - generates <LH>

htp.listingOpen, htp.listingClose - generate <LISTING> and </LISTING>

htp.menulistOpen, htp.menulistClose - generate <MENU> and </MENU>

htp.listItem - generates <LI>

Form Tags

htp.formOpen, htp.formClose - generate <FORM> and </FORM>

htp.formCheckbox - generates <INPUT TYPE="CHECKBOX">

htp.formHidden - generates <INPUT TYPE="HIDDEN">

htp.formImage - generates <INPUT TYPE="IMAGE">

htp.formPassword - generates <INPUT TYPE="PASSWORD">

htp.formRadio - generates <INPUT TYPE="RADIO">

htp.formSelectOpen, htp.formSelectClose - generate <SELECT> and </SELECT>

htp.formSelectOption - generates <OPTION>

htp.formText - generates <INPUT TYPE="TEXT">

htp.formTextarea, htp.formTextarea2 - generate <TEXTAREA>

htp.formTextareaOpen, htp.formTextareaOpen2, htp.formTextareaClose - generate <TEXTAREA> and </TEXTAREA>

htp.formReset - generates <INPUT TYPE="RESET">

htp.formSubmit - generates <INPUT TYPE="SUBMIT">

Table Tags

htp.tableOpen, htp.tableClose - generate <TABLE> and </TABLE>

htp.tableCaption - generates <CAPTION>

htp.tableRowOpen, htp.tableRowClose - generate <TR> and </TR>

htp.tableHeader - generates <TH>

htp.tableData - generates <TD>

htf.format_cell - generates <TD>

IMG, HR, and A Tags

htp.line, htp.hr - generate <HR>

htp.img, htp.img2 - generate <IMG>

htp.anchor, htp.anchor2 - generates <A>

htp.mapOpen, htp.mapClose - generate <MAP> and </MAP>

Paragraph Formatting Tags

htp.header - generates heading tags (<H1> to <H6>)

htp.para, htp.paragraph - generate <P>

htp.print, htp.prn - generate any text that is passed in

htp.prints, htp.ps - generate any text that is passed in; special characters in HTML are escaped

htp.preOpen, htp.preClose - generate <PRE> and </PRE>

htp.blockquoteOpen, htp.blockquoteClose - generate <BLOCKQUOTE> and </BLOCKQUOTE>

htp.div - generates <DIV>

htp.nl, htp.br - generate <BR>

htp.nobr - generates <NOBR>

htp.wbr - generates <WBR>

htp.plaintext - generates <PLAINTEXT>

htp.address - generates <ADDRESS>

htp.mailto - generates <A> with the MAILTO attribute

htp.area - generates <AREA>

htp.bgsound - generates <BGSOUND>

Character Formatting Tags

htp.basefont - generates <BASEFONT>

htp.big - generates <BIG>

htp.bold - generates <B>

htp.center - generates <CENTER> and </CENTER>

htp.centerOpen, htp.centerClose - generate <CENTER> and </CENTER>

htp.cite - generates <CITE>

htp.code - generates <CODE>

htp.dfn - generates <DFN>

htp.get_download_files_list - generate <EM>

htp.fontOpen, htp.fontClose - generate <FONT> and </FONT>

htp.italic - generates <I>

htp.keyboard, htp.kbd - generate <KBD> and </KBD>

htp.s - generates <S>

htp.sample - generates <SAMP>

htp.small - generates <SMALL>

htp.strike - generates <STRIKE>

htp.strong - generates <STRONG>

htp.sub - generates <SUB>

htp.sup - generates <SUP>

htp.teletype - generates <TT>

htp.underline - generates <U>

htp.variable - generates <VAR>

Frame Tags

htp.frame - generates <FRAME>

htp.framesetOpen, htp.framesetClose - generate <FRAMESET> and </FRAMESET>

htp.noframesOpen, htp.noframesClose - generate <NOFRAMES> and </NOFRAMES>

1.2 htp.address

This generates the <ADDRESS> and </ADDRESS> tags, which specify the address, author and signature of a document.

Table 1-1 describes the properties of htp.address.

Table 1-1 htp.address

Properties

Definitions

Syntax:

htp.address (
cvalue         in       varchar2
cnowrap        in       varchar2   DEFAULT NULL
cclear         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT
NULL);
htf.address (cvalue, cnowrap, cclear, cattributes) return varchar2;

Parameters:

cvalue - the string that goes between the <ADDRESS> and </ADDRESS> tags.

cnowrap - if the value for this parameter is not NULL, the NOWRAP attribute is included in the tag.

cclear - the value for the CLEAR attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<ADDRESS CLEAR="cclear" NOWRAP cattributes>cvalue</ADDRESS>

1.3 htp.anchor, htp.anchor2

These generate the <A> and </A> HTML tags, which specify the source or destination of a hypertext link. This tag accepts several attributes, but either HREF or NAME is required. HREF specifies to where to link. NAME allows this tag to be a target of a hypertext link. The difference between these subprograms is that htp.anchor2 provides a target and therefore can be used for a frame.

Table 1-2 describes the properties of htp.anchor, htp.anchor2.

Table 1-2 htp.anchor,htp.anchor2

Properties

Definitions

Syntax:

htp.anchor (
curl           in       varchar2
ctext          in       varchar2
cname          in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.anchor (curl, ctext, cname, cattributes) return varchar2;

htp.anchor2 (
curl           in       varchar2
ctext          in       varchar2
cname          in       varchar2   DEFAULT NULL
ctarget        in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.anchor2 (curl, ctext, cname, ctarget, cattributes) return varchar2;

Parameters:

curl - the value for the HREF attribute.

ctext - the string that goes between the <A> and </A> tags.

cname - the value for the NAME attribute.

ctarget - the value for the TARGET attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<A HREF="curl" NAME="cname" cattributes>ctext</A>

<A HREF="curl" NAME="cname" TARGET = "ctarget" cattributes>ctext</A>

1.4 htp.appletopen, htp.appletclose

htp.appletopen generates the <APPLET> HTML tag, which begins the invocation of a Java applet. Close the applet invocation with htp.appletclose, which generates the </APPLET> HTML tag.

Specify parameters to the Java applet using the htp.param procedure.

Use the cattributes parameter to specify the CODEBASE attribute since the PL/SQL cartridge does not know where to find the class files. The CODEBASE attribute specifies the virtual path containing the class files.

Table 1-3 describes the properties of htp.appletopen, htp.appletclose.

Table 1-3 htp.appleton, htp.appletclose

Properties

Definitions

Syntax:

htp.appletopen(
ccode          in       varchar2
cheight        in       number
cwidth         in       number
cattributes    in       varchar2   DEFAULT NULL);
htf.appletopen(ccode, cheight, cwidth, cattributes) return varchar2;

htp.appletclose;
htf.appletclose return varchar2;

Parameters:

ccode - the value for the CODE attribute, which specifies the name of the applet class.

cheight - the value for the HEIGHT attribute.

cwidth - the value for the WIDTH attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<APPLET CODE=ccode HEIGHT=cheight WIDTH=cwidth cattributes>

</APPLET>

Example:

htp.appletopen('testclass.class', 100, 200, 'CODEBASE="/ows-applets"')
generates

<APPLET CODE="testclass.class" height=100 width=200 CODEBASE="/ows-applets">

1.5 htp.area

This generates the <AREA> HTML tag, which defines a client-side image map. The <AREA> tag defines areas within the image and destinations for the areas.

Table 1-4 describes the properties of htp.area.

Table 1-4 htp.area

Properties

Definitions

Syntax:

htp.area(
ccoords        in       varchar2
cshape         in       varchar2   DEFAULT NULL
chref          in       varchar2   DEFAULT NULL
cnohref        in       varchar2   DEFAULT NULL
ctarget        in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.area(ccoords, cshape, chref, cnohref, ctarget, cattributes) return varchar2;

Parameters:

ccoords - the value for the COORDS attribute.

cshape - the value for the SHAPE attribute.

chref - the value for the HREF attribute.

cnohref - if the value for this parameter is not NULL, the NOHREF attribute is added to the tag.

ctarget - the value for the TARGET attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<AREA COORDS="ccoords" SHAPE="cshape" HREF="chref" NOHREF TARGET="ctarget" cattributes>

1.6 htp.base

This generates the <BASE> HTML tag, which records the URL of the document.

Table 1-5 describes the properties of htp.base.

Table 1-5 htp.base

Properties

Definitions

Syntax:

htp.base(
ctarget        in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.base(ctarget, cattributes) return varchar2;

Parameters:

ctarget - the value for the TARGET attribute, which establishes a window name to which all links in this document are targeted.

cattributes - other attributes to be included as-is in the tag.

Generates:

<BASE HREF="<current URL>" TARGET="ctarget" cattributes>

1.7 htp.basefont

This generates the <BASEFONT> HTML tag, which specifies the base font size for a Web page.

Table 1-6 describes the properties of htp.basefont.

Table 1-6 htp.basefont

Properties

Definitions

Syntax:

htp.basefont(nsize in integer);
htf.basefont(nsize) return varchar2;

Parameters:

nsize - the value for the SIZE attribute.

Generates:

<BASEFONT SIZE="nsize">

1.8 htp.bgsound

This generates the <BGSOUND> HTML tag, which includes audio for a Web page.

Table 1-7 describes the properties of htp.bgsound.

Table 1-7 htp.bgsound

Properties

Definitions

Syntax:

htp.bgsound(
csrc           in       varchar2
cloop          in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.bgsound(csrc, cloop, cattributes) return varchar2;

Parameters:

csrc - the value for the SRC attribute.

cloop - the value for the LOOP attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<BGSOUND SRC="csrc" LOOP="cloop" cattributes>

1.9 htp.big

This generates the <BIG> and </BIG> tags, which direct the browser to render the text in a bigger font.

Table 1-8 describes the properties of htp.big.

Table 1-8 htp.big

Properties

Definitions

Syntax:

htp.big(
ctext          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.big(ctext, cattributes) return varchar2;

Parameters:

ctext - the text that goes between the tags.

cattributes - other attributes to be included as-is in the tag.

Generates:

<BIG cattributes>ctext</BIG>

1.10 htp.blockquoteOpen, htp.blockquoteClose

This generates the <BLOCKQUOTE> and </BLOCKQUOTE> tag, which mark a section of quoted text.

Table 1-9 describes the properties of htp.blockquoteOpen, htp.blockquoteClose.

Table 1-9 htp.blockquoteOpen, htp.blockquoteClose

Properties

Definitions

Syntax:

htp.blockquoteOpen (
cnowrap        in       varchar2   DEFAULT NULL
cclear         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.blockquoteOpen (cnowrap, cclear, cattributes) return varchar2;

htp.blockquoteClose;
htf.blockquoteClose return varchar2;

Parameters:

cnowrap - if the value for this parameter is not NULL, the NOWRAP attribute is added to the tag.

cclear - the value for the CLEAR attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<BLOCKQUOTE CLEAR="cclear" NOWRAP cattributes>

</BLOCKQUOTE>

1.11 htp.bodyOpen, htp.bodyClose

This generates the <BODY> and </BODY> tags, which mark the body section of an HTML document.

Table 1-10 describes the properties of htp.bodyOpen, htp.bodyClose.

Table 1-10 htp.bodyOpen, htp.bodyClose

Properties

Definitions

Syntax:

htp.bodyOpen(
cbackground    in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.bodyOpen(cbackground, cattributes) return varchar2;

htp.bodyClose;
htf.bodyClose return varchar2;

Parameters:

cbackground - the value for the BACKGROUND attribute, which specifies a graphic file to use for the background of the document.

cattributes - other attributes to be included as-is in the tag.

Generates:

<BODY background="cbackground" cattributes>

</BODY>

Example:

htp.bodyOpen('/img/background.gif');
generates:
<BODY background="/img/background.gif">

1.12 htp.bold

This generates the <B> and </B> tags, which direct the browser to display the text in boldface.

Table 1-11 describes the properties of htp.bold.

Table 1-11 htp.bold

Properties

Definitions

Syntax:

htp.bold (
ctext          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.bold (ctext, cattributes) return varchar2;

Parameters:

ctext - the text that goes between the tags.

cattributes - other attributes to be included as-is in the tag.

Generates:

<B cattributes>ctext</B>

1.13 htp.center

This generates the <CENTER> and </CENTER> tags, which center a section of text within a Web page.

Table 1-12 describes the properties of htp.center.

Table 1-12 htp.center

Properties

Definitions

Syntax:

htp.center(ctext in varchar2);
htf.center(ctext in varchar2) return varchar2;

Parameters:

ctext - the text to center.

Generates:

<CENTER>ctext</CENTER>

1.14 htp.centerOpen, htp.centerClose

This generates the <CENTER> and </CENTER> tags, which mark the section of text to center.

Table 1-13 describes the properties of htp.centerOpen, htp.centerClose.

Table 1-13 htp.centerOpen, htp.centerClose

Properties

Definitions

Syntax:

htp.centerOpen;
htf.centerOpen return varchar2;

htp.centerClose;
htf.centerClose return varchar2;

Parameters:

None

Generates:

<CENTER>

</CENTER>

1.15 htp.cite

This generates the <CITE> and </CITE> tags, which direct the browser to render the text as citation.

Table 1-14 describes the properties of htp.cite.

Table 1-14 htp.cite

Properties

Definitions

Syntax:

htp.cite (
ctext          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.cite (ctext, cattributes) return varchar2;

Parameters:

ctext - the text to render as citation.

cattributes - other attributes to be included as-is in the tag.

Generates:

<CITE cattributes>ctext</CITE>

1.16 htp.code

This generates the <CODE> and </CODE> tags, which direct the browser to render the text in monospace font.

Table 1-15 describes the properties of htp.code.

Table 1-15 htp.code

Properties

Definitions

Syntax:

htp.code (
ctext          in        varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.code (ctext, cattributes) return varchar2;

Parameters:

ctext - the text to render as code.

cattributes - other attributes to be included as-is in the tag.

Generates:

<CODE cattributes>ctext</CODE>

1.17 htp.comment

This generates the comment tags.

Table 1-16 describes the properties of htp.comment.

Table 1-16 htp.comment

Properties

Definitions

Syntax:

htp.comment (ctext in varchar2);
htf.comment (ctext in varchar2) return varchar2;

Parameters:

ctext - the comment.

Generates:

<!-- ctext -->

1.18 htp.dfn

This generates the <DFN> and </DFN> tags, which direct the browser to render the text in italics.

Table 1-17 describes the properties of htp.dfn.

Table 1-17 htp.dfn

Properties

Definitions

Syntax:

htp.dfn(ctext in varchar2);
htf.dfn(ctext in varchar2) return varchar2;

Parameters:

ctext - the text to render in italics.

Generates:

<DFN>ctext</DFN>

1.19 htp.dirlistOpen, htp.dirlistClose

This generates the <DIR> and </DIR> tags, which create a directory list section. A directory list presents a list of items that contains up to 20 characters. Items in this list are typically arranged in columns, 24 characters wide. The <LI> tag or must appear directly after this tag to define the items in the list.

Table 1-18 describes the properties of htp.dirlistOpen, htp.dirlistClose.

Table 1-18 htp.dirlistOpen, htp.dirlistClose

Properties

Definitions

Syntax:

htp.dirlistOpen;
htf.dirlistOpen return varchar2;

htp.dirlistClose;
htf.dirlistClose return varchar2;

Parameters:

None

Generates:

<DIR>

</DIR>

1.20 htp.div

This generates the <DIV> tag, which creates document divisions.

Table 1-19 describes the properties of htp.div.

Table 1-19 htp.div

Properties

Definitions

Syntax:

htp.div(
calign         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.div(calign, cattributes) return varchar2;

Parameters:

calign - the value for the ALIGN attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<DIV ALIGN="calign" cattributes>

1.21 htp.dlistOpen, htp.dlistClose

This generates the <DL> and </DL> tags, which create a definition list. A definition list looks like a glossary: it contains terms and definitions. Terms are inserted using htp.dlistTerm, and definitions are inserted using htp.dlistDef.

Table 1-20 describes the properties of htp.dlistOpen, htp.dlistClose.

Table 1-20 htp.dlistOpen, htp.dlistClose

Properties

Definitions

Syntax:

htp.dlistOpen (
cclear         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.dlistOpen (cclear, cattributes) return varchar2;

htp.dlistClose;
htf.dlistClose return varchar2;

Parameters:

cclear - the value for the CLEAR attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<DL CLEAR="cclear" cattributes>

</DL>

1.22 htp.dlistDef

This generates the <DD> tag, which inserts definitions of terms. Use this tag for a definition list <DL>. Terms are tagged <DT> and definitions are tagged <DD>.

Table 1-21 describes the properties of htp.dlistDef.

Table 1-21 htp.dlistDef

Properties

Definitions

Syntax:

htp.dlistDef(
ctext          in       varchar2   DEFAULT NULL
cclear         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.dlistDef(ctext, cclear, cattributes) return varchar2;

Parameters:

ctext - the definition for the term.

cclear - the value for the CLEAR attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<DD CLEAR="cclear" cattributes>ctext

1.23 htp.dlistTerm

This generates the <DT> tag, which defines a term in a definition list <DL>.

Table 1-22 describes the properties of htp.dlistTerm.

Table 1-22 htp.dlistTerm

Properties

Definitions

Syntax:

htp.dlistTerm (
ctext          in       varchar2   DEFAULT NULL
cclear         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.dlistTerm (ctext, cclear, cattributes) return varchar2;

Parameters:

ctext - the term.

cclear - the value for the CLEAR attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<DT CLEAR="cclear" cattributes>ctext

1.24 htp.download_file

After uploading files to the database, you can download them, delete them from the database, and read and write their attributes.

Table 1-23 describes the properties of htp.download_file.

Table 1-23 htp.download_file

Properties

Definitions

Syntax:

htp.download_file(
sFileName  in  varchar2
bCompress  in  boolean  DEFAULT FALSE);

Parameters:

sFileName - file to be downloaded.

bCompress - to compress file or not.

Generates:

The downloaded file.

1.25 htp.get_download_files_list

After you have downloaded files to the database, you need to get the files.

Table 1-24 describes the properties of htp.get_download_files_list.

Table 1-24 htp.get_download_files_list

Properties

Definitions

Syntax:

htp.get_download_files_list(
sFileName  out varchar2
bCompress  out binary_integer);

Parameters:

sFileName - file to get.

bCompress - to compress file or not.

Generates:

The downloaded file.

1.26 htp.emphasis, htp.em

This generates the <EM> and </EM> tags, which define text to be emphasized.

Table 1-25 describes the properties of htp.emphasis, htp.em.

Table 1-25 htp.emphasis, htp.em

Properties

Definitions

Syntax:

htp.em (
ctext          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.em (ctext, cattributes) return varchar2;

htp.emphasis (
ctext          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.emphasis (ctext, cattributes) return varchar2;

Parameters:

ctext - the text to emphasize.

cattributes - other attributes to be included as-is in the tag.

Generates:

<EM cattributes>ctext</EM>

1.27 htf.escape_sc

This replaces characters that have special meaning in HTML with their escape sequences. The following characters are converted:

& to &amp;

" to &quot:

< to &lt;

> to &gt;

The procedure version of this subprogram does the same thing as htp.prints and htp.ps.

Table 1-26 describes the properties of htf.escape_sc.

Table 1-26 htf.escape_sc

Properties

Definitions

Syntax:

htf.escape_sc(ctext in varchar2) return varchar2;
htp.escape_sc(ctext in varchar2);

Parameters:

ctext - the string to convert.

Generates:

The converted string.

1.28 htf.escape_url

This replaces characters that have special meaning in HTML and HTTP with their escape sequences. The following characters are converted:

& to &amp;

" to &quot;

< to &lt;

> to &gt;

% to %25

Table 1-27 describes the properties of htf.escape_url.

Table 1-27 htf.escape_url

Properties

Definitions

Syntax:

htf.escape_url(p_url in varchar2) return varchar2;

Parameters:

p_url - the string to convert.

Generates:

The converted string.

Note:

This procedure is provided for backward compatibility reasons only. It does not comply with the Internet Engineering Task Force (IETF) Request for Comments (RFC) standards of URL encoding. If you need to encode URLs, it is recommended that you use the function utl_url.escape() that is available in the PL/SQL packages supplied with the Oracle Database.

1.29 htp.fontOpen, htp.fontClose

This generates the <FONT> and </FONT> tags, which mark a section of text with the specified font characteristics.

Table 1-28 describes the properties of htp.fontOpen, htp.fontClose.

Table 1-28 htp.fontOpen,htp.fontClose

Properties

Definitions

Syntax:

htp.fontOpen(
ccolor         in       varchar2   DEFAULT NULL
cface          in       varchar2   DEFAULT NULL
csize          in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.fontOpen(ccolor, cface, csize, cattributes) return varchar2;

htp.fontClose;
htf.fontClose return varchar2;

Parameters:

ccolor - the value for the COLOR attribute.

cface - the value for the FACE attribute.

csize - the value for the SIZE attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<FONT COLOR="ccolor" FACE="cface" SIZE="csize" cattributes>

</FONT>

1.30 htf.format_cell

This formats column values inside an HTML table using htf.tableData. It allows better control over the HTML tables.

Table 1-29 describes the properties of htf.format_cell.

Table 1-29 htf.format_cell

Properties

Definitions

Syntax:

htf.format_cell (
columnValue          in       varchar2
format_numbers       in       varchar2   DEFAULT NULL) return varchar2;

Parameters:

columnValue - the value that needs to be formatted in an HTML table.

format_numbers - the format that numeric data is displayed in. If the value of this parameter is not Null, number fields are right-justified and rounded to two decimal places.

Generates:

<TD>columnValue</TD>

1.31 htp.formCheckbox

This generates the <INPUT> tag with TYPE="checkbox", which inserts a checkbox element in a form. A checkbox element is a button that the user toggles on or off.

Table 1-30 describes the properties of htp.formCheckbox.

Table 1-30 htp.formCheckbox

Properties

Definitions

Syntax:

htp.formCheckbox (
cname          in       varchar2
cvalue         in       varchar2   DEFAULT 'on'
cchecked       in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.formCheckbox (cname, cvalue, cchecked, cattributes) return varchar2;

Parameters:

cname - the value for the NAME attribute.

cvalue - the value for the VALUE attribute.

cchecked - if the value for this parameter is not NULL, the CHECKED attribute is added to the tag.

cattributes - other attributes to be included as-is in the tag.

Generates:

<INPUT TYPE="checkbox" NAME="cname" VALUE="cvalue" CHECKED cattributes>

1.32 htp.formOpen, htp.formClose

This generates the <FORM> and </FORM> tags, which create a form section in an HTML document.

Table 1-31 describes the properties of htp.formOpen, htp.formClose.

Table 1-31 htp.formOpen, htp.formClose

Properties

Definitions

Syntax:

htp.formOpen (
curl           in       varchar2
cmethod        in       varchar2   DEFAULT 'POST'
ctarget        in       varchar2   DEFAULT NULL
cenctype       in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.formOpen (curl, cmethod, ctarget, cenctype, cattributes) return varchar2;

htp.formClose;
htf.formClose return varchar2;

Parameters:

curl - the URL of the WRB or CGI script where the contents of the form is sent. This parameter is required.

cmethod - the value for the METHOD attribute. The value can be "GET" or "POST".

ctarget - the value for the TARGET attribute.

cenctype - the value for the ENCTYPE attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<FORM ACTION="curl" METHOD="cmethod" TARGET="ctarget" ENCTYPE="cenctype" cattributes>

</FORM>

1.33 htp.formFile

This generates the <INPUT> tag with TYPE="file", which allows the user to select files so that their contents may be submitted with a form.

Table 1-32 describes the properties of htp.formFile.

Table 1-32 htp.formFile

Properties

Definitions

Syntax:

function formFile(
cname          in       varchar2
caccept        in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.formFile (cname, caccept, cattributes) return varchar2;

Parameters:

cname - the value for the NAME attribute.

caccept - a comma seperated list of MIME types for upload

cattributes - other attributes to be included as-is in the tag.

Generates:

<INPUT TYPE="file" NAME="cname" ACCEPT="caccept" cattributes>

1.34 htp.formHidden

This generates the <INPUT> tag with TYPE="hidden", which inserts a hidden form element. This element is not seen by the user. It submits additional values to the script.

Table 1-33 describes the properties of htp.formHidden.

Table 1-33 htp.formHidden

Properties

Definitions

Syntax:

htp.formHidden (
cname          in       varchar2
cvalue         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.formHidden (cname, cvalue, cattributes) return varchar2;

Parameters:

cname - the value for the NAME attribute.

cvalue - the value for the VALUE attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<INPUT TYPE="hidden" NAME="cname" VALUE="cvalue" cattributes>

1.35 htp.formImage

This generates the <INPUT> tag with TYPE="image", which creates an image field that the user clicks to submit the form immediately. The coordinates of the selected point are measured in pixels, and returned (along with other contents of the form) in two name/value pairs. The x coordinate is submitted under the name of the field with .x appended, and the y coordinate with .y appended. Any VALUE attribute is ignored.

Table 1-34 describes the properties of htp.formImage.

Table 1-34 htp.formImage

Properties

Definitions

Syntax:

htp.formImage (
cname          in       varchar2
csrc           in       varchar2
calign         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.formImage (cname, csrc, calign, cattributes) return varchar2;

Parameters:

cname - the VALUE for the NAME attribute.

csrc - the value for the SRC attribute, which specifies the image file.

calign - the value for the ALIGN attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<INPUT TYPE="image" NAME="cname" SRC="csrc" ALIGN="calign" cattributes>

1.36 htp.formPassword

This generates the <INPUT> tag with TYPE="password", which creates a single-line text entry field. When the user enters text in the field, each character is represented by one asterisk. This is used for entering passwords.

Table 1-35 describes the properties of htp.formPassword.

Table 1-35 htp.formPassword

Properties

Definitions

Syntax:

htp.formPassword (
cname          in       varchar2
csize          in       varchar2
cmaxlength     in       varchar2   DEFAULT NULL
cvalue         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.formPassword (cname, csize, cmaxlength, cvalue, cattributes) return varchar2;

Parameters:

cname - the value for the NAME attribute.

csize - the value for the SIZE attribute.

cmaxlength - the value for the MAXLENGTH attribute.

cvalue - the value for the VALUE attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<INPUT TYPE="password" NAME="cname" SIZE="csize" MAXLENGTH="cmaxlength" VALUE="cvalue" cattributes>

1.37 htp.formRadio

This generates the <INPUT> tag with TYPE="radio", which creates a radio button on the HTML form. Within a set of radio buttons, the user selects only one. Each radio button in the same set has the same name, but different values. The selected radio button generates a name/value pair.

Table 1-36 describes the properties of htp.formRadio.

Table 1-36 htp.formRadio

Properties

Definitions

Syntax:

htp.formRadio (
cname          in       varchar2
cvalue         in       varchar2
cchecked       in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.formRadio (cname, cvalue, cchecked, cattributes) return varchar2;

Parameters:

cname - the value for the NAME attribute.

cvalue - the value for the VALUE attribute.

cchecked - if the value for this parameter is not NULL, the CHECKED attribute is added to the tag.

cattributes - other attributes to be included as-is in the tag.

Generates:

<INPUT TYPE="radio" NAME="cname" VALUE="cvalue" CHECKED cattributes>

1.38 htp.formReset

This generates the <INPUT> tag with TYPE="reset", which creates a button that, when selected, resets the form fields to their initial values.

Table 1-37 describes the properties of htp.formReset.

Table 1-37 htp.formReset

Properties

Definitions

Syntax:

htp.formReset (
cvalue         in       varchar2   DEFAULT 'Reset'
cattributes    in       varchar2   DEFAULT NULL);
htf.formReset (cvalue, cattributes) return varchar2;

Parameters:

cvalue - the value for the VALUE attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<INPUT TYPE="reset" VALUE="cvalue" cattributes>

1.39 htp.formSelectOpen, htp.formSelectClose

This generates the <SELECT> and </SELECT> tags, which creates a Select form element. A Select form element is a listbox where the user selects one or more values. The values are inserted using htp.formSelectOption.

Table 1-38 describes the properties of htp.formSelectOpen, htp.formSelectClose.

Table 1-38 htp.formSelectOpen,htp.formSelectClose

Properties

Definitions

Syntax:

htp.formSelectOpen (
cname          in       varchar2
cprompt        in       varchar2   DEFAULT NULL
nsize          in       integer    DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.formSelectOpen (cname, cprompt, nsize, cattributes) return varchar2;

htp.formSelectClose;
htf.formSelectClose return varchar2;

Parameters:

cname - the value for the NAME attribute.

cprompt - the string preceding the list box.

nsize - the value for the SIZE attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

cprompt <SELECT NAME="cname" SIZE="nsize" cattributes>

</SELECT>

Example:

htp.formSelectOpen('greatest_player',
'Pick the greatest player:');
htp.formSelectOption('Messier');
htp.formSelectOption('Howe');
htp.formSelectOption('Gretzky');.
htp.formSelectClose;

Generates:
Pick the greatest player:
<SELECT NAME="greatest_player">
<OPTION>Messier
<OPTION>Howe
<OPTION>Gretzky
</SELECT>

1.40 htp.formSelectOption

This generates the <OPTION> tag, which represents one choice in a Select element.

Table 1-39 describes the properties of htp.formSelectOption.

Table 1-39 htp.formSelectOption

Properties

Definitions

Syntax:

htp.formSelectOption (
cvalue         in       varchar2
cselected      in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.formSelectOption (cvalue, cselected, cattributes) return varchar2;

Parameters:

cvalue - the text for the option.

cselected - if the value for this parameter is not NULL, the SELECTED attribute is added to the tag.

cattributes - other attributes to be included as-is in the tag.

Generates:

<OPTION SELECTED cattributes>cvalue

Example:

See htp.formSelectOpen, htp.formSelectClose

1.41 htp.formSubmit

This generates the <INPUT> tag with TYPE="submit", which creates a button that, when clicked, submits the form.

If the button has a NAME attribute, the button contributes a name/value pair to the submitted data.

Table 1-40 describes the properties of htp.formSubmit.

Table 1-40 htp.formSubmit

Properties

Definitions

Syntax:

htp.formSubmit (
cname          in       varchar2   DEFAULT NULL
cvalue        in       varchar2   DEFAULT 'Submit'
cattributes    in       varchar2   DEFAULT NULL);
htf.formSubmit (cname, cvalue, cattributes) return varchar2;

Parameters:

cname - the value for the NAME attribute.

cvalue - the value for the VALUE attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<INPUT TYPE="submit" NAME="cname" VALUE="cvalue" cattributes>

1.42 htp.formText

This generates the <INPUT> tag with TYPE="text", which creates a field for a single line of text.

Table 1-41 describes the properties of htp.formText.

Table 1-41 htp.formText

Properties

Definitions

Syntax:

htp.formText (
cname          in       varchar2
csize          in       varchar2   DEFAULT NULL
cmaxlength    in       varchar2   DEFAULT NULL
cvalue         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.formText (cname, csize, cmaxlength, cvalue, cattributes) return varchar2;

Parameters:

cname - the value for the NAME attribute.

csize - the value for the SIZE attribute.

cmaxlength - the value for the MAXLENGTH attribute.

cvalue - the value for the VALUE attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<INPUT TYPE="text" NAME="cname" SIZE="csize" MAXLENGTH="cmaxlength" VALUE="cvalue" cattributes>

1.43 htp.formTextarea, htp.formTextarea2

This generates the <TEXTAREA> tag, which creates a text field that has no predefined text in the text area. This field enables entering several lines of text.

The difference between these subprograms is that htp.formTextarea2 has the cwrap parameter, which specifies a wrap style.

Table 1-42 describes the properties of htp.formTextarea, htp.formTextarea2.

Table 1-42 htp.formTextarea, htp.formTextarea2

Properties

Definitions

Syntax:

htp.formTextarea (
cname          in       varchar2
nrows          in       integer
ncolumns       in       integer
calign       in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.formTextarea (cname, nrows, ncolumns, calign, cattributes) return varchar2;

htp.formTextarea2 (
cname          in       varchar2
nrows          in       integer
ncolumns       in       integer
calign         in       varchar2   DEFAULT NULL
cwrap          in       varchar2   DEFAULT NULL
cattributes  in       varchar2   DEFAULT NULL);
htf.formTextarea2 (cname, nrows, ncolumns, calign, cwrap, cattributes) return varchar2;

Parameters:

cname - the value for the NAME attribute.

nrows - the value for the ROWS attribute. This is an integer.

ncolumns - the value for the COLS attribute. This is an integer.

calign - the value for the ALIGN attribute.

cwrap - the value for the WRAP attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<TEXTAREA NAME="cname" ROWS="nrows" COLS="ncolumns" ALIGN="calign" cattributes></TEXTAREA>

<TEXTAREA NAME="cname" ROWS="nrows" COLS="ncolumns" ALIGN="calign" WRAP="cwrap" cattributes></TEXTAREA>

1.44 htp.formTextareaOpen, htp.formTextareaOpen2, htp.formTextareaClose

This generates the <TEXTAREA> and </TEXTAREA> tags, which creates a text area form element The difference between the two open subprograms is that htp.formTextareaOpen2 has the cwrap parameter, which specifies a wrap style.

Table 1-43 describes the properties of htp.formTextareaOpen, htp.formTextareaOpen2, htp.formTextareaClose.

Table 1-43 htp.formTextareaOpen, htp.formTextareaOpen2, htp.formTextareaClose

Properties

Definitions

Syntax:

htp.formTextareaOpen (
cname          in       varchar2
nrows          in       integer
ncolumns       in       integer
calign         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.formTextareaOpen (cname, nrows, ncolumns, calign, cattributes) return varchar2;

htp.formTextareaOpen2(
cname          in       varchar2
nrows          in       integer
ncolumns       in       integer
calign         in       varchar2   DEFAULT NULL
cwrap          in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.formTextareaOpen2(cname, nrows, ncolumns, calign, cwrap, cattributes) return varchar2;

htp.formTextareaClose;
htf.formTextareaClose return varchar2;

Parameters:

cname - the value for the NAME attribute.

nrows - the value for the ROWS attribute. This is an integer.

ncolumns - the value for the COLS attribute. This is an integer.

calign - the value for the ALIGN attribute.

cwrap - the value for the WRAP attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<TEXTAREA NAME="cname" ROWS="nrows" COLS="ncolumns" ALIGN="calign" cattributes>

<TEXTAREA NAME="cname" ROWS="nrows" COLS="ncolumns" ALIGN="calign" WRAP = "cwrap" cattributes>

</TEXTAREA>

1.45 htp.frame

This generates the <FRAME> tag, which defines the characteristics of a frame created by a <FRAMESET> tag.

Table 1-44 describes the properties of htp.frame.

Table 1-44 htp.frame

Properties

Definitions

Syntax:

htp.frame(
csrc           in       varchar2
cname          in       varchar2   DEFAULT NULL
cmarginwidth   in       varchar2   DEFAULT NULL
cmarginheight  in       varchar2   DEFAULT NULL
cscrolling     in       varchar2   DEFAULT NULL
cnoresize      in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.frame(csrc, cname, cmarginwidth, cmarginheight, cscrolling, cnoresize, cattributes) return varchar2;

Parameters:

csrc - the URL to display in the frame.

cname - the value for the NAME attribute.

cmarginwidth - the value for the MARGINWIDTH attribute.

cmarginheight - the value for the MARGINHEIGHT attribute.

cscrolling - the value for the SCROLLING attribute.

noresize - if the value for this parameter is not NULL, the NORESIZE attribute is added to the tag.

cattributes - other attributes to be included as-is in the tag.

Generates:

<FRAME SRC="csrc" NAME="cname" MARGINWIDTH="cmarginwidth" MARGINHEIGHT="cmarginheight" SCROLLING="cscrolling" NORESIZE cattributes>

1.46 htp.framesetOpen, htp.framesetClose

This generates the <FRAMESET> and </FRAMESET> tags, which define a frameset section.

Table 1-45 describes the properties of htp.framesetOpen, htp.framesetClose.

Table 1-45 htp.framesetOpen, htp.framesetClose

Properties

Definitions

Syntax:

htp.framesetOpen(
crows          in       varchar2   DEFAULT NULL
ccols          in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.framesetOpen(crows, ccols, cattributes) return varchar2;

htp.framesetClose;
htf.framesetClose return varchar2;

Parameters:

crows - the value for the ROWS attribute.

ccols - the value for the COLS attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<FRAMESET ROWS="crows" COLS="ccols" cattributes>

</FRAMESET>

1.47 htp.headOpen, htp.headClose

This generates the <HEAD> and </HEAD> tags, which mark the HTML document head section

Table 1-46 describes the properties of htp.headOpen, htp.headClose.

Table 1-46 htp.headOpen, htp.headClose

Properties

Definitions

Syntax:

htp.headOpen;
htf.headOpen return varchar2;

htp.headClose;
htf.headClose return varchar2;

Parameters:

None

Generates:

<HEAD>

</HEAD>

1.48 htp.header

This generates opening heading tags (<H1> to <H6>) and their corresponding closing tags (</H1> to </H6>).

Table 1-47 describes the properties of htp.header.

Table 1-47 htp.header

Properties

Definitions

Syntax:

htp.header (

nsize          in       integer

cheader        in       varchar2

calign         in       varchar2   DEFAULT NULL

cnowrap        in       varchar2   DEFAULT NULL

cclear         in       varchar2   DEFAULT NULL

cattributes    in       varchar2   DEFAULT NULL);

htf.header (nsize, cheader, calign, cnowrap, cclear, cattributes) return varchar2;

Parameters:

nsize - the heading level. This is an integer between 1 and 6.

calign - the value for the ALIGN attribute.

cheader - the text to display in the heading.

cnowrap - the value for the NOWRAP attribute.

cclear - the value for the CLEAR attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<Hnsize ALIGN="calign" NOWRAP CLEAR="cclear" cattributes>cheader</Hnsize>

Example:

htp.header (1,'Overview');

produces:

<H1>Overview</H1>

1.49 htp.htmlOpen, htp.htmlClose

This generates the <HTML> and </HTML> tags, which mark the beginning and the end of an HTML document.

Table 1-48 describes the properties of htp.htmlOpen, htp.htmlClose.

Table 1-48 htp.htmlOpen, htp.htmlClose

Properties

Definitions

Syntax:

htp.htmlOpen;
htf.htmlOpen return varchar2;

htp.htmlClose;
htf.htmlClose return varchar2;

Parameters:

None.

Generates:

<HTML>

</HTML>

1.50 htp.img, htp.img2

This generates the <IMG> tag, which directs the browser to load an image onto the HTML page. The difference between these subprograms is that htp.img2 uses the cusemap parameter.

Table 1-49 describes the properties of htp.img, htp.img2.

Table 1-49 htp.img, htp.img2

Properties

Definitions

Syntax:

htp.img (
curl           in       varchar2   DEFAULT NULL
calign         in       varchar2   DEFAULT NULL
calt           in       varchar2   DEFAULT NULL
cismap         in       varchar2  DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.img (curl, calign, calt, cismap, cattributes) return varchar2;

htp.img2(
curl           in       varchar2   DEFAULT NULL
calign         in       varchar2   DEFAULT NULL
calt           in       varchar2   DEFAULT NULL
cismap         in       varchar2   DEFAULT NULL
cusemap        in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.img2(curl, calign, calt, cismap, cusemap, cattributes) return varchar2;

Parameters:

curl - the value for the SRC attribute.

calign - the value for the ALIGN attribute.

calt - the value for the ALT attribute, which specifies alternative text to display if the browser does not support images.

cismap - if the value for this parameter is not NULL, the ISMAP attribute is added to the tag. The attribute indicates that the image is an imagemap.

cusemap - the value for the USEMAP attribute, which specifies a client-side image map.

cattributes - other attributes to be included as-is in the tag.

Generates:

<IMG SRC="curl" ALIGN="calign" ALT="calt" ISMAP cattributes>

<IMG SRC="curl" ALIGN="calign" ALT="calt" ISMAP USEMAP="cusemap" cattributes>

1.51 htp.isindex

This creates a single entry field with a prompting text, such as "enter value," then sends that value to the URL of the page or program.

Table 1-50 describes the properties of htp.isindex.

Table 1-50 htp.isindex

Properties

Definitions

Syntax:

htp.isindex (
cprompt        in       varchar2    DEFAULT NULL
curl           in       varchar2    DEFAULT NULL);
htf.isindex (cprompt, curl) return varchar2;

Parameters:

cprompt - the value for the PROMPT attribute.

curl - the value for the HREF attribute.

Generates:

<ISINDEX PROMPT="cprompt" HREF="curl">

1.52 htp.italic

This generates the <I> and </I> tags, which direct the browser to render the text in italics.

Table 1-51 describes the properties of htp.italic.

Table 1-51 htp.italic

Properties

Definitions

Syntax

htp.italic (
ctext          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.italic (ctext, cattributes) return varchar2;

Parameters

ctext - the text to be rendered in italics.

cattributes - other attributes to be included as-is in the tag.

Generates

<I cattributes>ctext</I>

1.53 htp.keyboard, htp.kbd

This generates the <KBD> and </KBD> tags, which direct the browser to render the text in monospace. These subprograms do the same thing.

Table 1-52 describes the properties of htp.keyboard, htp.kbd.

Table 1-52 htp.keyboard, htp.kbd

Properties

Definitions

Syntax:

htp.keyboard (
ctext          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.keyboard (ctext, cattributes) return varchar2;

htp.kbd (
ctext          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.kbd (ctext, cattributes) return varchar2;

Parameters:

ctext - the text to render in monospace.

cattributes - other attributes to be included as-is in the tag.

Generates:

<KBD cattributes>ctext</KBD>

1.54 htp.line, htp.hr

This generates the <HR> tag, which generates a line in the HTML document.

Table 1-53 describes the properties of htp.line, htp.hr.

Table 1-53 htp.line, htp.hr

Properties

Definitions

Purpose

Generates the <HR> tag, which generates a line in the HTML document.

Syntax

htp.line (
cclear         in       varchar2   DEFAULT NULL
csrc           in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.line (cclear, csrc, cattributes) return varchar2;

htp.hr (
cclear         in       varchar2   DEFAULT NULL
csrc           in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.hr (cclear, csrc, cattributes) return varchar2;

Parameters

cclear - the value for the CLEAR attribute.

csrc - the value for the SRC attribute, which specifies a custom image as the source of the line.

cattributes - other attributes to be included as-is in the tag.

Generates

<HR CLEAR="cclear" SRC="csrc" cattributes>

1.55 htp.linkRel

This generates the <LINK> tag with the REL attribute, which gives the relationship described by the hypertext link from the anchor to the target. This is only used when the HREF attribute is present. This tag indicates a relationship between documents, but does not create a link. To create a link, use htp.anchor, htp.anchor2.

Table 1-54 describes the properties of htp.linkRel.

Table 1-54 htp.linkRel

Properties

Directions

Syntax:

htp.linkRel (
crel           in       varchar2
curl           in       varchar2
ctitle         in       varchar2   DEFAULT NULL);
htf.linkRel (crel, curl, ctitle) return varchar2;

Parameters:

crel - the value for the REL attribute.

curl - the value for the HREF attribute.

ctitle - the value for the TITLE attribute.

Generates:

<LINK REL="crel" HREF="curl" TITLE="ctitle">

1.56 htp.linkRev

This generates the <LINK> tag with the REV attribute, which gives the relationship described by the hypertext link from the target to the anchor. This is the opposite of htp.linkRel. This tag indicates a relationship between documents, but does not create a link. To create a link, use htp.anchor, htp.anchor2.

Table 1-55 describes the properties of htp.linkRev.

Table 1-55 htp.linkRev

Properties

Definitions

Syntax:

htp.linkRev (
crev           in       varchar2
curl           in       varchar2
ctitle         in    varchar2   DEFAULT NULL);
htf.linkRev (crev, curl, ctitle) return varchar2;

Parameters:

crev - the value for the REV attribute.

curl - the value for the HREF attribute

ctitle - the value for the TITLE attribute.

Generates

<LINK REV="crev" HREF="curl" TITLE="ctitle">

1.57 htp.listHeader

This generates the <LH> and </LH> tags, which print an HTML tag at the beginning of the list.

Table 1-56 describes the properties of htp.listHeader.

Table 1-56 htp.listHeader

Properties

Definitions

Syntax:

htp.listHeader (
ctext          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.listHeader (ctext, cattributes) return varchar2;

Parameters:

ctext - the text to place between <LH> and </LH>.

cattributes - other attributes to be included as-is in the tag.

Generates:

<LH cattributes>ctext</LH>

1.58 htp.listingOpen, htp.listingClose

This generates the <LISTING> and </LISTING> tags, which mark a section of fixed-width text in the body of an HTML page.

Table 1-57 describes the properties of htp.listingOpen, htp.listingClose.

Table 1-57 htp.listingOpen, htp.listingClose

Properties

Definitions

Syntax:

htp.listingOpen;
htf.listingOpen return varchar2;

htp.listingClose;
htf.listingClose return varchar2;

Parameters:

None.

Generates:

<LISTING>

</LISTING>

1.59 htp.listItem

This generates the <LI> tag, which indicates a list item.

Table 1-58 describes the properties of htp.listItem.

Table 1-58 htp.listltem

Properties

Definitions

Syntax:

htp.listItem (
ctext          in       varchar2   DEFAULT NULL
cclear         in       varchar2   DEFAULT NULL
cdingbat       in       varchar2   DEFAULT NULL
csrc           in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.listItem (ctext, cclear, cdingbat, csrc, cattributes) return varchar2;

Parameters:

ctext - the text for the list item.

cclear - the value for the CLEAR attribute.

cdingbat - the value for the DINGBAT attribute.

csrc - the value for the SRC attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<LI CLEAR="cclear" DINGBAT="cdingbat" SRC="csrc" cattributes>ctext

1.60 htp.mailto

This generates the <A> tag with the HREF set to 'mailto' prepended to the mail address argument.

Table 1-59 describes the properties of htp.mailto.

Table 1-59 htp.mailto

Properties

Definitions

Syntax:

htp.mailto (
caddress       in       varchar2
ctext          in    varchar2
cname          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.mailto (caddress, ctext, cname, cattributes) return varchar2;

Parameters:

caddress - the email address of the recipient.

ctext - the clickable portion of the link.

cname - the value for the NAME attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<A HREF="mailto:caddress" NAME="cname" cattributes>ctext</A>

Example:

htp.mailto('pres@white_house.gov','Send Email to the President');

generates:

<A HREF="mailto:pres@white_house.gov">Send Email to the President</A>

1.61 htp.mapOpen, htp.mapClose

This generates the <MAP> and </MAP> tags, which mark a set of regions in a client-side image map.

Table 1-60 describes the properties of htp.mapOpen, htp.mapClose.

Table 1-60 htp.mapOpen, htp.mapClose

Properties

Definitions

Syntax:

htp.mapOpen(
cname          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.mapOpen(cname, cattributes) return varchar2;
htp.mapClose;
htf.mapClose return varchar2;

Parameters:

cname - the value for the NAME attribute.

cattributes - other attributes to be included as-is in the tag

Generates:

<MAP NAME="cname" cattributes>

</MAP>

1.62 htp.menulistOpen, htp.menulistClose

This generates the <MENU> and </MENU> tags, which create a list that presents one line for each item. The items in the list appear more compact than an unordered list. The htp.listItem defines the list items in a menu list.

Table 1-61 describes the properties of htp.menulistOpen, htp.menulistClose.

Table 1-61 htp.menulistOpen, htp.menulistClose

Properties

Definitions

Syntax:

htp.menulistOpen;
htf.menulistOpen return varchar2;

htp.menulistClose;
htf.menulistClose return varchar2;

Parameters:

None.

Generates:

<MENU>

</MENU>

1.63 htp.meta

This generates the <META> tag, which embeds meta-information about the document and also specifies values for HTTP headers. For example, you specify the expiration date, keywords, and author name.

Table 1-62 describes the properties of htp.meta.

Table 1-62 htp.meta

Properties

Definitions

Syntax:

htp.meta (
chttp_equiv    in       varchar2
cname          in       varchar2
ccontent       in       varchar2);
htf.meta (chttp_equiv, cname, ccontent) return varchar2;

Parameters:

chttp_equiv - the value for the HTTP-EQUIV attribute.

cname - the value for the NAME attribute.

ccontent - the value for the CONTENT attribute.

Generates:

<META HTTP-EQUIV="chttp_equiv" NAME ="cname" CONTENT="ccontent">

Example:

htp.meta ('Refresh', NULL, 120);

generates:

<META HTTP-EQUIV="Refresh" CONTENT=120>

On some Web browsers, this causes the current URL to be reloaded automatically every 120 seconds.

1.64 htp.nl, htp.br

This generates the <BR> tag, which begins a new line of text.

Table 1-63 describes the properties of htp.nl, htp.br.

Table 1-63 htp.nl, htp.br

Properties

Definitions

Syntax:

htp.nl (
cclear         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.nl (cclear, cattributes) return varchar2;

htp.br (
cclear         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.br (cclear, cattributes) return varchar2;

Parameters:

cclear - the value for the CLEAR attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<BR CLEAR="cclear" cattributes>

1.65 htp.nobr

This generates the <NOBR> and </NOBR> tags, which turn off line-breaking in a section of text.

Table 1-64 describes the properties of htp.nobr.

Table 1-64 htp.nobr

Properties

Definitions

Syntax:

htp.nobr(ctext in varchar2);
htf.nobr(ctext) return varchar2;

Parameters:

ctext - the text that is to be rendered on one line.

Generates:

<NOBR>ctext</NOBR>

1.66 htp.noframesOpen, htp.noframesClose

This generates the <NOFRAMES> and </NOFRAMES> tags, which mark a no-frames section.

Table 1-65 describes the properties of htp.noframesOpen, htp.noframesClose.

Table 1-65 htp.noframesOpen, htp.noframesClose

Properties

Definitions

Syntax:

htp.noframesOpen
htf.noframesOpen return varchar2;

htp.noframesClose
htf.noframesClose return varchar2;

Parameters:

None.

Generates:

<NOFRAMES>

</NOFRAMES>

See Also:

htp.frame, htp.framesetOpen, htp.framesetClose

1.67 htp.olistOpen, htp.olistClose

This generates the <OL> and </OL> tags, which define an ordered list. An ordered list presents a list of numbered items. Numbered items are added using htp.listItem.

Table 1-66 describes the properties of htp.olistOpen, htp.olistClose.

Table 1-66 htp.olistOpen, htp.olistClose

Properties

Definitions

Syntax:

htp.olistOpen (
cclear         in       varchar2   DEFAULT NULL
cwrap          in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.olistOpen (cclear, cwrap, cattributes) return varchar2;

htp.olistClose;
htf.olistClose return varchar2;

Parameters:

cclear - the value for the CLEAR attribute.

cwrap - the value for the WRAP attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<OL CLEAR="cclear" WRAP="cwrap" cattributes>

</OL>

1.68 htp.para, htp.paragraph

This generates the <P> tag, which indicates that the text that comes after the tag is to be formatted as a paragraph. htp.paragraph enables you to add attributes to the tag.

Table 1-67 describes the properties of htp.para, htp.paragraph.

Table 1-67 htp.para, htp.paragraph

Properties

Definitions

Syntax:

htp.para;
htf.para return varcahr2;

htp.paragraph (
calign         in       varchar2   DEFAULT NULL
cnowrap        in       varchar2   DEFAULT NULL
cclear         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.paragraph (calign, cnowrap, cclear, cattributes) return varchar2;

Parameters:

calign - the value for the ALIGN attribute.

cnowrap - if the value for this parameter is not NULL, the NOWRAP attribute is added to the tag.

cclear - the value for the CLEAR attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<P>

<P ALIGN="calign" NOWRAP CLEAR="cclear" cattributes>

1.69 htp.param

This generates the <PARAM> tag, which specifies parameter values for Java applets. The values can reference HTML variables. To invoke a Java applet from a Web page, use htp.appletopen to begin the invocation. Use one htp.param for each desired name-value pair, and use htp.appletclose to end the applet invocation.

Table 1-68 describes the properties of htp.param.

Table 1-68 htp.param

Properties

Definitions

Syntax:

htp.param(
cname          in       varchar2
cvalue         in       varchar2);
htf.param(cname, cvalue) return varchar2;

Parameters:

cname - the value for the NAME attribute.

cvalue - the value for the VALUE attribute.

Generates:

<PARAM NAME=cname VALUE="cvalue">

1.70 htp.plaintext

This generates the <PLAINTEXT> and </PLAINTEXT> tags, which direct the browser to render the text they surround in fixed-width type.

Table 1-69 describes the properties of htp.plaintext.

Table 1-69 htp.plaintext

Properties

Definitions

Syntax:

htp.plaintext(
ctext          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.plaintext(ctext, cattributes) return varchar2;

Parameters:

ctext - the text to be rendered in fixed-width font.

cattributes - other attributes to be included as-is in the tag.

Generates:

<PLAINTEXT cattributes>ctext</PLAINTEXT>

1.71 htp.preOpen, htp.preClose

This generates the <PRE> and </PRE> tags, which mark a section of preformatted text in the body of the HTML page.

Table 1-70 describes the properties of htp.preOpen, htp.preClose.

Table 1-70 htp.preOpen, htp.preClose

Properties

Definitions

Syntax:

htp.preOpen (
cclear         in       varchar2   DEFAULT NULL
cwidth         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.preOpen (cclear, cwidth, cattributes) return varchar2;

htp.preClose;
htf.preClose return varchar2;

Parameters:

cclear - the value for the CLEAR attribute.

cwidth - the value for the WIDTH attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<PRE CLEAR="cclear" WIDTH="cwidth" cattributes>

</PRE>

1.72 htp.print, htp.prn

htp.print generates the specified parameter as a string terminated with the \n newline character. The \n character is not the same as <BR>. The \n character formats the HTML source; it does not affect how the browser renders the HTML source. Use <BR> to control how the browser renders the HTML source.

htp.prn generates the specified parameter as a string. Unlike htp.print, the string is not terminated with the \n newline character. These subprograms are procedures only, they do not come as functions.

Table 1-71 describes the properties of htp.print, htp.prn.

Table 1-71 htp.print, htp.prn

Properties

Definitions

Syntax

htp.print (cbuf in varchar2);
htp.print (dbuf in date);
htp.print (nbuf in number);

htp.prn (cbuf in varchar2);
htp.prn (dbuf in date);
htp.prn (nbuf in number);

Parameters:

cbuf, dbuf, nbuf - the string to generate.

Generates:

htp.print - a string terminated with a newline.

htp.prn - the specified string, not terminated with a newline.

1.73 htp.prints, htp.ps

Both these subprograms generate a string and replace the following characters with the corresponding escape sequence.

< to &lt;

> to &gt;

" to &quot;

& to &amp;

If not replaced, the special characters are interpreted as HTML control characters and produce garbled output. This procedure is the same as htp.prn but with the character substitution. These subprograms are procedures only, they are not available as functions. Use htf.escape_sc if you need a string conversion function.

Table 1-72 describes the properties of htp.prints, htp.ps.

Table 1-72 htp.prints, htp.ps

Properties

Definitions

Syntax:

htp.prints(ctext in varchar2);
htp.ps(ctext in varchar2);

Parameters:

ctext - the string where to perform character substitution.

Generates:

A string.

1.74 htp.s

This generates the <S> and </S> tags, which direct the browser to render the text they surround in strikethrough type.

Table 1-73 describes the properties of htp.s.

Table 1-73 htp.s

Properties

Definitions

Syntax:

htp.s(
ctext          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.s(ctext, cattributes) return varchar2;

Parameters:

ctext - the text to render in strikethrough type.

cattributes - other attributes to be included as-is in the tag.

Generates:

<S cattributes>ctext</S>

1.75 htp.sample

This generates the <SAMP> and </SAMP> tags, which direct the browser to render the text they surround in monospace font.

Table 1-74 describes the properties of htp.sample.

Table 1-74 htp.sample

Properties

Definitions

Syntax:

htp.sample (
ctext          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.sample (ctext, cattributes) return varchar2;

Parameters:

ctext - the text to render in monospace font.

cattributes - other attributes to be included as-is in the tag.

Generates:

<SAMP cattributes>ctext</SAMP>

1.76 htp.script

This generates the <SCRIPT> and </SCRIPT> tags, which contain a script written in languages such as JavaScript and VBscript.

Table 1-75 describes the properties of htp.script.

Table 1-75 htp.script

Properties

Definitions

Syntax:

htp.script(
cscript        in       varchar2
clanguage      in       varchar2   DEFAULT NULL);
htf.script(cscript, clanguage) return varchar2;

Parameters:

cscript - the text of the script. This is the text that makes up the script itself, not the name of a file containing the script.

clanguage - the langauge in which the script is written. If this parameter is omitted, the user's browser determines the scripting language.

Generates:

<SCRIPT LANGUAGE=clanguage>cscript</SCRIPT>

Example:

htp.script ('script text here', 'Javascript');

generates:
<SCRIPT LANGUAGE=Javascript>"script text here"
</SCRIPT>

This causes the browser to run the script enclosed in the tags.

1.77 htp.small

This generates the <SMALL> and </SMALL> tags, which direct the browser to render the text they surround using a small font.

Table 1-76 describes the properties of htp.small.

Table 1-76 htp.small

Properties

Definitions

Syntax:

htp.small(
ctext          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.small(ctext, cattributes) return varchar2;

Parameters:

ctext - the text to render in a small font.

cattributes - other attributes to be included as-is in the tag.

Generates:

<SMALL cattributes>ctext</SMALL>

1.78 htp.strike

This generates the <STRIKE> and </STRIKE> tags, which direct the browser to render the text they surround in strikethrough type.

Table 1-77 describes the properties of htp.strike.

Table 1-77 htp.strike

Properties

Definitions

Syntax:

htp.strike(
ctext          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.strike(ctext, cattributes) return varchar2;

Parameters:

ctext - the text to be rendered in strikethrough type.

cattributes - other attributes to be included as-is in the tag.

Generates:

<STRIKE cattributes>ctext</STRIKE>

1.79 htp.strong

This generates the <STRONG> and </STRONG> tags, which direct the browser to render the text they surround in bold.

Table 1-78 describes the properties of htp.strong.

Table 1-78 htp.strong

Properties

Definitions

Syntax:

htp.strong (
ctext          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.strong (ctext, cattributes) return varchar2;

Parameters:

ctext - the text to be emphasized.

cattributes - other attributes to be included as-is in the tag.

Generates:

<STRONG cattributes>ctext</STRONG>

1.80 htp.style

This generates the <STYLE> and </STYLE> tags, which include a style sheet in your Web page. Style sheets are a feature of HTML 3.2. You can get more information about style sheets at http://www.w3.org. This feature is not compatible with browsers that support only HTML versions 2.0 or earlier. Such browsers will ignore this tag.

Table 1-79 describes the properties of htp.style.

Table 1-79 htp.style

Properties

Definitions

Syntax:

htp.style(cstyle in varchar2);

htf.style(cstyle) return varchar2;

Parameters:

cstyle - the style information to include.

Generates:

<STYLE>cstyle</STYLE>

1.81 htp.sub

This generates the <SUB> and </SUB> tags, which direct the browser to render the text they surround as subscript.

Table 1-80 describes the properties of htp.sub.

Table 1-80 htp.sub

Properties

Definitions

Syntax:

htp.sub(
ctext          in       varchar2
calign         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.sub(ctext, calign, cattributes) return varchar2;

Parameters:

ctext - the text to render in subscript.

calign - the value for the ALIGN attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<SUB ALIGN="calign" cattributes>ctext</SUB>

1.82 htp.sup

This generates the <SUP> and </SUP> tags, which direct the browser to render the text they surround as superscript.

Table 1-81 describes the properties of htp.sup.

Table 1-81 htp.sup

Properties

Definitions

Syntax:

htp.sup(
ctext          in       varchar2
calign         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.sup(ctext, calign, cattributes) return varchar2;

Parameters:

ctext - the text to render in subscript.

calign - the value for the ALIGN attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<SUP ALIGN="calign" cattributes>ctext</SUP>

1.83 htp.tableCaption

This generates the <CAPTION> and </CAPTION> tags, which place a caption in an HTML table.

Table 1-82 describes the properties of htp.tableCaption.

Table 1-82 htp.tableCaption

Properties

Definitions

Syntax:

htp.tableCaption (
ccaption       in       varchar2
calign         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.tableCaption (ccaption, calign, cattributes) return varchar2;

Parameters:

ccaption - the text for the caption.

calign - the value for the ALIGN attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<CAPTION ALIGN="calign" cattributes>ccaption</CAPTION>

1.84 htp.tableData

This generates the <TD> and </TD> tags, which insert data into a cell of an HTML table.

Table 1-83 describes the properties of htp.tableData.

Table 1-83 htp.tableData

Properties

Definitions

Syntax:

htp.tableData (
cvalue         in       varchar2   DEFAULT NULL
calign         in       varchar2   DEFAULT NULL
cdp            in       varchar2   DEFAULT NULL
cnowrap        in       varchar2   DEFAULT NULL
crowspan       in       varchar2   DEFAULT NULL
ccolspan       in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.tableData (cvalue, calign, cdp, cnowrap, crowspan, ccolspan, cattributes) return varchar2;

Parameters:

cvalue - the data for the cell in the table.

calign - the value for the ALIGN attribute.

cdp - the value for the DP attribute.

cnowrap - if the value of this parameter is not NULL, the NOWRAP attribute is added to the tag.

crowspan - the value for the ROWSPAN attribute.

ccolspan - the value for the COLSPAN attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<TD ALIGN="calign" DP="cdp" ROWSPAN="crowspan" COLSPAN="ccolspan" NOWRAP cattributes>cvalue</TD>

1.85 htp.tableHeader

This generates the <TH> and </TH> tags, which insert a header cell in an HTML table. The <TH> tag is similar to the <TD> tag, except that the text in the rows are usually rendered in bold type.

Table 1-84 describes the properties of htp.tableHeader.

Table 1-84 htp.tableHeader

Properties

Definitions

Syntax:

htp.tableHeader (
cvalue         in       varchar2   DEFAULT NULL
calign         in       varchar2   DEFAULT NULL
cdp            in       varchar2   DEFAULT NULL
cnowrap        in       varchar2   DEFAULT NULL
crowspan       in       varchar2   DEFAULT NULL
ccolspan       in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.tableHeader (cvalue, calign, cdp, cnowrap, crowspan, ccolspan, cattributes) return varchar2;

Parameters:

cvalue - the data for the cell in the table.

calign - the value for the ALIGN attribute.

cdp - the value for the DP attribute.

cnowrap - if the value of this parameter is not NULL, the NOWRAP attribute is added to the tag.

crowspan - the value for the ROWSPAN attribute.

ccolspan - the value for the COLSPAN attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<TH ALIGN="calign" DP="cdp" ROWSPAN="crowspan" COLSPAN="ccolspan" NOWRAP cattributes>cvalue</TH>

1.86 htp.tableOpen, htp.tableClose

This generates the <TABLE> and </TABLE> tags, which define an HTML table.

Table 1-85 describes the properties of htp.tableOpen, htp.tableClose.

Table 1-85 htp.tableOpen, htp.tableClose

Properties

Definitions

Syntax:

htp.tableOpen (
cborder        in       varchar2   DEFAULT NULL
calign         in       varchar2   DEFAULT NULL
cnowrap        in       varchar2   DEFAULT NULL
cclear         in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.tableOpen (cborder, calign, cnowrap, cclear, cattributes) return varchar2;

htp.tableClose;
htf.tableClose return varchar2;

Parameters:

cborder - the value for the BORDER attribute.

calign - the value for the ALIGN attribute.

cnowrap - if the value of this parameter is not NULL, the NOWRAP attribute is added to the tag.

cclear - the value for the CLEAR attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<TABLE "cborder" NOWRAP ALIGN="calign" CLEAR="cclear" cattributes>

</TABLE>

1.87 htp.tableRowOpen, htp.tableRowClose

This generates the <TR> and </TR> tags, which inserts a new row in an HTML table.

Table 1-86 describes the properties of htp.tableRowOpen, htp.tableRowClose.

Table 1-86 htp.tableRowOpen, htp.tableRowClose

Properties

Definitions

Syntax:

htp.tableRowOpen (
calign         in       varchar2   DEFAULT NULL
cvalign        in       varchar2   DEFAULT NULL
cdp            in       varchar2   DEFAULT NULL
cnowrap        in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL);
htf.tableRowOpen (calign, cvalign,cdp, cnowrap, cattributes) return varchar2;

htp.tableRowClose;
htp.tableRowClose return varchar2;

Parameters:

calign - the value for the ALIGN attribute.

cvalign - the value for the VALIGN attribute.

cdp - the value for the DP attribute.

cnowrap - if the value of this parameter is not NULL, the NOWRAP attribute is added to the tag.

cattributes - other attributes to be included as-is in the tag.

Generates:

<TR ALIGN="calign" VALIGN="cvalign" DP="cdp" NOWRAP catttributes>

</TR>

1.88 htp.teletype

This generates the <TT> and </TT> tags, which direct the browser to render the text they surround in a fixed width typewriter font, for example, the courier font.

Table 1-87 describes the properties of htp.teletype.

Table 1-87 htp.teletype

Properties

Definitions

Syntax:

htp.teletype (
ctext          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.teletype (ctext, cattributes) return varchar2;

Parameters:

ctext - the text to render in a fixed width typewriter font.

cattributes - other attributes to be included as-is in the tag.

Generates:

<TT cattributes>ctext</TT>

1.89 htp.title

This generates the <TITLE> and </TITLE> tags, which specify the text to display in the titlebar of the browser window.

Table 1-88 describes the properties of htp.title.

Table 1-88 htp.title

Properties

Definitions

Syntax:

htp.title (ctitle in varchar2);
htf.title (ctitle) return varchar2;

Parameters:

ctitle - the text to display in the titlebar of the browser window.

Generates:

<TITLE>ctitle</TITLE>

1.90 htp.ulistOpen, htp.ulistClose

This generates the <UL> and </UL> tags, which define an unordered list. An unordered list presents items with bullets. Add list items with htp.listItem.

Table 1-89 describes the properties of htp.ulistOpen, htp.ulistClose.

Table 1-89 htp.ulistOpen, htp.ulistClose

Properties

Definitions

Syntax:

htp.ulistOpen (
cclear         in       varchar2   DEFAULT NULL
cwrap          in       varchar2   DEFAULT NULL
cdingbat       in       varchar2   DEFAULT NULL
csrc           in       varchar2   DEFAULT NULL
cattributes    in       varchar2   DEFAULT NULL
htf.ulistOpen (cclear, cwrap, cdingbat, csrc, cattributes) return varchar2;

htp.ulistClose;
htf.ulistClose return varhar2;

Parameters:

cclear - the value for the CLEAR attribute.

cwrap - the value for the WRAP attribute.

cdingbat - the value for the DINGBAT attribute.

csrc - the value for the SRC attribute.

cattributes - other attributes to be included as-is in the tag.

Generates:

<UL CLEAR="cclear" WRAP="cwrap" DINGBAT="cdingbat" SRC="csrc" cattributes>

</UL>

1.91 htp.underline

This generates the <U> and </U> tags, which direct the browser to render the text they surround with an underline.

Table 1-90 describes the properties of htp.underline.

Table 1-90 htp.underline

Properties

Definitions

Syntax:

htp.underline(
ctext          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.underline(ctext, cattributes) return varchar2;

Parameters:

ctext - the text to render with an underline.

cattributes - other attributes to be included as-is in the tag.

Generates:

<U cattributes>ctext</U>

1.92 htp.variable

This generates the <VAR> and </VAR> tags, which direct the browser to render the text they surround in italics.

Table 1-91 describes the properties of htp.variable.

Table 1-91 htp.variable

Properties

Definitions

Syntax:

htp.variable (
ctext          in       varchar2
cattributes    in       varchar2   DEFAULT NULL);
htf.variable (ctext, cattributes) return varchar2;

Parameters:

ctext - the text to render in italics.

cattributes - other attributes to be included as-is in the tag.

Generates:

<VAR cattributes>ctext</VAR>

1.93 htp.wbr

This generates the <WBR> tag, which inserts a soft line break within a section of NOBR text.

Table 1-92 describes the properties of htp.wbr.

Table 1-92 htp.wbr

Properties

Definitions

Syntax:

htp.wbr;
htf.wbr return wbr;

Parameters:

None.

Generates:

<WBR>

2 The owa_cache Package

The owa_cache package contains functions and procedures that enable the PL/SQL Gateway cache feature to improve the performance of your PL/SQL web application. This section describes the specification of these functions and procedures.

2.1 Summary

owa_cache.disable - disables the cache for this particular request.

owa_cache.set_expires - sets up the cache headers for expires model cache type.

owa_cache.set_cache - sets up the cache headers for validation model cache type.

owa_cache.set_not_modified - sets up the headers for a not modified cache hit (used in the Validation technique model only).

owa_cache.get_level - returns the caching level (used in the Validation technique model only).

owa_cache.get_etag - returns the tag associated with the cached content (used in the Validation technique model only).

2.2 owa_cache.disable

This disables the cache for this particular request.

Table 2-1 describes the properties of owa_cache.disable.

Table 2-1 owa_cache.disable

Properties

Definitions

Parameters:

None

Exceptions:

None

2.3 owa_cache.set_expires

This sets up the cache headers for expires model cache type.

Table 2-2 describes the properties of owa_cache.set_expires.

Table 2-2 owa_cache.set_expires

Properties

Definitions

Parameters:

p_expires IN - the number of minutes this content is valid.

p_level IN - the caching level for it.

Exceptions:

VALUE_ERROR is thrown if

p_expires is negative or zero, or

p_level is not 'USER' or 'SYSTEM', or

p_expires is > 525600 (1 year).

2.4 owa_cache.set_cache

This sets up the cache headers for validation model cache type.

Table 2-3 describes the properties of owa_cache.set_cache.

Table 2-3 owa_cache.set_cache

Properties

Definitions

Parameters:

p_etag IN - the tag associated with this content.

p_level IN - the caching level for it.

Exceptions:

VALUE_ERROR is thrown if

p_etag is greater than 55, or

p_level is not 'USER' or 'SYSTEM'.

2.5 owa_cache.set_not_modified

This sets up the headers for a not modified cache hit. It is used in the Validation technique only.

Table 2-4 describes the properties of owa_cache.set_not_modified.

Table 2-4 owa_cache.set_not_modified

Properties

Definitions

Exceptions:

VALUE_ERROR is thrown if ETag was not passed in.

2.6 owa_cache.get_level

This returns the caching level. It is used in the Validation technique model only.

Table 2-5 describes the properties of owa_cache.get_level.

Table 2-5 owa_cache.get_level

Properties

Definitions

Returns:

The caching level string ('USER' or 'SYSTEM') for cache hit; null otherwise.

2.7 owa_cache.get_etag

This returns the tag associated with the cached content. It is used in the Validation technique only.

Table 2-6 describes the properties of owa_cache.get_etag.

Table 2-6 owa_cache.get_etag

Properties

Definitions

Returns:

The tag for cache hit; null otherwise.

3 The owa_cookie Package

The owa_cookie package contains subprograms that send and retrieve HTTP cookies from the client's browser. Cookies are opaque strings sent to the browser to maintain state between HTTP calls. State can be maintained throughout the client's sessions, or longer if an expiration date is included. Your system date is calculated with reference to the information specified in the owa_custom package.

3.1 Summary

owa_cookie.cookie data type - data type to contain cookie name-value pairs.

owa_cookie.get function - gets the value of the specified cookie.

owa_cookie.get_all procedure - gets all cookie name-value pairs.

owa_cookie.remove procedure - removes the specified cookie.

owa_cookie.send procedure - generates a "Set-Cookie" line in the HTTP header.

Note:

All HTTP headers must be in English. If the headers are generated from the database, verify they are created in the English language.

3.2 owa_cookie.cookie data type

Since the HTTP standard allows cookie names to be overloaded (that is, multiple values can be associated with the same cookie name), this is a PL/SQL RECORD holding all values associated with a given cookie name.

Type vc_arr is table of varchar2(4000) index by binary_integer.

Table 3-1 describes the properties of the owa_cookie.cookie data type.

Table 3-1 owa_cookie.cookie data type

Properties

Definitions

Syntax:

type cookie is RECORD (
name           varchar2(4000),
vals           vc_arr,
num_vals       integer);

Returns:

Not applicable.

3.3 owa_cookie.get function

This function returns the values associated with the specified cookie. The values are returned in a owa_cookie.cookie data type.

Table 3-2 describes the properties of the owa_cookie.get function.

Table 3-2 owa_cookie.get function

Properties

Definitions

Syntax:

owa_cookie.get(name in varchar2) return cookie;

Parameter:

name - the name of the cookie.

Returns:

An owa_cookie.cookie data type.

3.4 owa_cookie.get_all procedure

This procedure returns all cookie names and their values from the client's browser. The values appear in the order in which they were sent from the browser.

Table 3-3 describes the properties of the owa_cookie.get_all procedure.

Table 3-3 owa_cookie.get_all procedures

Properties

Definitions

Syntax:

owa_cookie.get_all(
names          out      vc_arr,
vals           out      vc_arr,
num_vals       out      integer);

Parameters:

names - the names of the cookies.

vals - the values of the cookies.

num_vals - the number of cookie-value pairs.

Generates:

Arrays of the names and values in the order received, and the count of the combinations.

3.5 owa_cookie.remove procedure

This procedure forces a cookie to expire immediately by setting the "expires" field of a Set-Cookie line in the HTTP header to "01-Jan-1990". This procedure must be called within the context of an HTTP header.

Table 3-4 describes the properties of the owa_cookie.remove procedure.

Table 3-4 owa_cookie.remove procedure

Properties

Definitions

Syntax:

owa_cookie.remove(
name           in       varchar2,
val            in       varchar2,
path           in       varchar2   DEFAULT NULL);

Parameters:

name - the name of the cookie to expire.

value - the value of the cookie.

path - currently unused.

Generates:

Set-Cookie: <name>=<value> expires=01-JAN-1990

3.6 owa_cookie.send procedure

This procedure generates a Set-Cookie line, which transmits a cookie to the client. This procedure must occur in the context of an HTTP header.

Table 3-5 describes the properties of the owa_cookie.send procedure.

Table 3-5 owa_cookie.send procedure

Properties

Definitions

Syntax

owa_cookie.send(
name           in       varchar2,
value          in       varchar2,
expires        in       date       DEFAULT NULL,
path           in       varchar2   DEFAULT NULL,
domain         in       varchar2   DEFAULT NULL,
secure         in       varchar2   DEFAULT NULL),
httponly       in       varchar2   DEFAULT NULL),

Parameters:

name -the name of the cookie.

value - the value of the cookie.

expires - the date at which the cookie will expire.

path - the value for the path field.

domain - the value for the domain field.

secure - if the value of this parameter is not NULL, the "secure" field is added to the line.

httponly - if the value of this parameter is not NULL, the "HttpOnly" field is added to the line.

Generates:

Set-Cookie: <name>=<value> expires=<expires> path=<path> domain=<domain> secure HttpOnly

Note:

For more information about HTTP-only, see the section on Mitigating Cross-site Scripting With HTTP-only Cookies, in http://msdn.microsoft.com/en-us/default.aspx.

4 The owa_image Package

The owa_image package contains subprograms that get the coordinates of where the user clicked on an image. Use this package when you have any image map whose destination links invoke the PL/SQL Gateway. Your procedure would look something like:

create or replace procedure process_image
(my_img in owa_image.point)
as
x integer := owa_image.get_x(my_img);
y integer := owa_image.get_y(my_img);
begin
/* process the coordinate */
end

4.1 Summary

owa_image.NULL_POINT package variable - variable of type point whose X and Y values are NULL.

owa_image.point data type - data type to contain the X and Y values of a coordinate.

owa_image.get_x function - gets the X value of a point type.

owa_image.get_y function - gets the Y value of a point type.

4.2 owa_image.NULL_POINT package variable

This package variable of type point is used to default point parameters. Both the X and the Y fields of this variable are NULL.

Table 4-1 describes the properties of the owa_image.NULL_POINT package variable.

Table 4-1 owa_image.NULL_POINT package variable

Properties

Definitions

Syntax:

null_point - package variable

Returns:

Not applicable.

4.3 owa_image.point data type

This data type provides the x and y coordinates of a user's click on an imagemap. It is defined as:

type point is table of varchar2(32767) index by binary_integer.

Table 4-2 describes the properties of the owa_image.point data type.

Table 4-2 owa_image.point data type

Properties

Definitions

Syntax:

point - data type

Returns:

Not applicable.

4.4 owa_image.get_x function

This function returns the X coordinate of the point where the user clicked on an image map.

Table 4-3 describes the properties of the owa_image.get_x function.

Table 4-3 owa_image.get_x function

Properties

Definitions

Syntax:

owa_image.get_x(p in point) return integer;

Parameter:

p - the point where the user clicked.

Returns:

The X coordinate as an integer.

4.5 owa_image.get_y function

This function returns the Y coordinate of the point where the user clicked on an image map.

Table 4-4 describes the properties of the owa_image.get_y function.

Table 4-4 owa_image.get_y function

Properties

Definitions

Syntax:

owa_image.get_y(p in point) return integer;

Parameters:

p - the point where the user clicked.

Returns:

The Y coordinate as an integer.

5 The owa_opt_lock Package

The owa_opt_lock package contains subprograms that impose optimistic locking strategies, so as to prevent lost updates. It checks if the row that the user is interested in updating has been changed by someone else in the meantime.

The PL/SQL Gateway cannot use conventional database locking schemes because HTTP is a stateless protocol. The owa_opt_lock package gives you two ways of dealing with the lost update problem:

- The hidden fields method stores the previous values in hidden fields in the HTML page. When the user requests an update, the PL/SQL Gateway checks these values against the current state of the database. The update operation is performed only if the values match. To use this method, call the owa_opt_lock.store_values procedure.

- The checksum method stores a checksum rather than the values themselves. To use this method, call the owa_opt_lock.checksum function.

These methods are optimistic. They do not prevent other users from performing updates, but they do reject the current update if an intervening update has occurred.

5.1 Summary

owa_opt_lock.vcArray data type - data type to contain ROWIDs.

owa_opt_lock.checksum function - returns the checksum value.

owa_opt_lock.get_rowid function - returns the ROWID value.

owa_opt_lock.store_values procedure - stores unmodified values in hidden fields for later verification.

owa_opt_lock.verify_values function - verifies the stored values against modified values.

5.2 owa_opt_lock.vcArray data type

This data type is a PL/SQL table intended to hold ROWIDs.

Type vcArray is table of varchar2(2000) index by binary_integer.

Note that this is different from the owa_text.vc_arr data type.

Table 5-1 describes the properties of the owa_opt_lock.vcArray data type.

Table 5-1 owa_opt_lock.vcArray data type

Properties

Definitions

Syntax:

owa_opt_lock.vcArray - data type

Returns:

Not applicable.

5.3 owa_opt_lock.checksum function

This function returns a checksum value for a specified string, or for a row in a table. For a row in a table, the function calculates the checksum value based on the values of the columns in the row. This function comes in two versions.

The first version returns a checksum based on the specified string. This is a "pure" 32-bit checksum executed by the database and based on the Internet 1 protocol.

The second version returns a checksum based on the values of a row in a table. This is a "impure" 32-bit checksum based on the Internet 1 protocol.

Table 5-2 describes the properties of the owa_opt_lock.checksum function.

Table 5-2 owa_opt_lock.checksum function

Properties

Definitions

Syntax:

owa_opt_lock.checksum(p_buff in varchar2) return number;
owa_opt_lock.checksum(
p_owner        in       varchar2
p_tname        in       varchar2
p_rowid        in       rowid) return number;

Parameters:

p_buff - the string where you want to calculate the checksum.

p_owner - the owner of the table.

p_tname - the table name.

p_rowid - the row in p_tname where you want to calculate the checksum value. Use the owa_opt_lock.get_rowid function to convert vcArray values to proper rowids.

Returns:

A checksum value.

5.4 owa_opt_lock.get_rowid function

This function returns the ROWID data type from the specified owa_opt_lock.vcArray data type.

Table 5-3 describes the properties of the owa_opt_lock.get_rowid function.

Table 5-3 owa_opt_lock.get_rowid function

Properties

Definitions

Syntax:

owa_opt_lock.get_rowid(p_old_values in vcArray) return rowid;

Parameters:

p_old_values - this parameter is usually passed in from an HTML form.

Returns:

A ROWID.

5.5 owa_opt_lock.store_values procedure

This procedure stores the column values of the row that you want to update later. The values are stored in hidden HTML form elements. Before updating the row, compare these values with the current row values to ensure that the values in the row have not been changed. If the values have changed, you can warn the users and let them decide if the update should take place.

Table 5-4 describes the properties of the owa_opt_lock.store_values procedure.

Table 5-4 owa_opt_lock.store_values procedure

Properties

Definitions

Syntax:

owa_opt_lock.store_values(
p_owner        in       varchar2
p_tname        in       varchar2
p_rowid        in       rowid);

Parameters:

p_owner - the owner of the table.

p_tname - the name of the table.

p_rowid - the row where you want to store values.

Generates:

A series of hidden form elements:

One hidden form element is created for the table owner. The name of the element is "old_p_tname", where p_tname is the name of the table. The value of the element is the owner name.

One hidden form element is created for the table name. The name of the element is "old_p_tname", where p_tname is the name of the table. The value of the element is the table name.

One element is created for each column in the row. The name of the element is "old_p_tname", where p_tname is the name of the table. The value of the element is the column value.

See also:

owa_opt_lock.verify_values function.

5.6 owa_opt_lock.verify_values function

This function verifies whether values in the specified row have been updated since the last query. Use this function with the owa_opt_lock.store_values procedure.

Table 5-5 describes the properties of the owa_opt_lock.verify_values function.

Table 5-5 owa_opt_lock.verify_values function

Properties

Definitions

Syntax:

owa_opt_lock.verify_values(p_old_values in vcArray) return boolean;

Parameters:

p_old_values - a PL/SQL table containing the following information:

p_old_values(1) specifies the owner of the table.

p_old_values(2) specifies the table.

p_old_values(3) specifies the rowid of the row to verify.

The remaining indexes contain values for the columns in the table.

Typically, this parameter is passed in from the HTML form, where you have previously called the owa_opt_lock.store_values procedure to store the row values on hidden form elements.

Returns:

TRUE if no other update has been performed; otherwise, FALSE.

See also:

owa_opt_lock.store_values procedure.

6 The owa_pattern Package

The owa_pattern package in the PL/SQL Web Toolkit locates text patterns within strings and replaces the matched string with another string. Use regular expressions with the subprograms in this package.

6.1 Subprograms

Regular Expressions - this section describes the special characters, quantifiers, and flags used in forming regular expressions.

owa_pattern.amatch function - determines if a string contains the specified pattern. It lets you specify where in the string the match has to occur.

owa_pattern.change function and procedure - replaces a pattern within a string. If you call it as a function it returns the number of times the regular expression was found and replaced.

owa_pattern.getpat procedure - generates a pattern data type from a VARCHAR2 type.

owa_pattern.match function - determines if a string contains the specified pattern.

owa_pattern.pattern data type - data type to store regular expressions.

These subprograms are overloaded. That is, there are several versions of each, distinguished by the parameters they use. Specifically, there are six versions of MATCH, and four each of AMATCH and CHANGE. The subprograms use the following parameters:

- line - This is the target to be examined for a match. It can be more than one line of text or a owa_text.multi_line data type.

- pat - This is the pattern that the subprograms attempt to locate in line. The pattern can contain regular expressions. In the owa_pattern.change function and procedure, this parameter is called from_str.

- flags - This specifies whether the search is case-sensitive or if substitutions are done globally.

6.2 Regular Expressions

Specify a regular expression by creating the string you want to match interspersed with various wildcard tokens and quantifiers.

6.2.1 Wildcard Tokens

Wildcard tokens match something other than themselves.

Table 6-1 defines each wildcard token.

Table 6-1 Wildcard tokens recognized by owa_pattern package

Token

Description

^

Matches newline or the beginning of the target

$

Matches newline or the end of the target

\n

Matches newline

.

Matches any character except newline

\t

Matches tab

\d

Matches digits [0-9]

\D

Matches non-digits [not 0-9]

\w

Matches word characters (0-9, a-z, A-Z, or _)

\W

Matches non-word characters (not 0-9, a-z, A-Z, or _)

\s

Matches whitespace characters (blank, tab, or newline).

\S

Matches non-whitespace characters (not blank, tab, or newline)

\b

Matches "word" boundaries (between \w and \W)

\x<HEX>

Matches the value in the current character set of the two hexadecimal digits

\<OCT>

Matches the value in the current character set of the two or three octal digits

\

Followed by any character not covered by another case matches that character

&

Applies only to CHANGE. This causes the string that matched the regular expression to be included in the string that replaces it. This differs from the other tokens in that it specifies how a target is changed rather than how it is matched. This is explained further under CHANGE.

6.2.2 Quantifiers

Any tokens except & can have their meaning extended by any of the following quantifiers. You can also apply these quantifiers to literals.

Table 6-2 defines each quantifier.

Table 6-2 Quantifiers

Quantifier

Description

?

0 or 1 occurrence(s)

*

0 or more occurrences

+

1 or more occurrence(s)

{n}

Exactly n occurrences

(n,}

At least n occurrences

{n,m}

At least n, but not more than m, occurrences

6.2.3 Flags

In addition to targets and regular expressions, the owa_pattern functions and procedures use flags to affect how they are interpreted.

Table 6-3 defines flags.

Table 6-3 Flags

Flag

Description

i

This indicates a case-insensitive search.

g

This applies only to CHANGE. It indicates a global replace. That is, all portions of the target that match the regular expression are replaced.

6.3 owa_pattern.amatch function

This function specifies if a pattern occurs in a particular location in a string. There are four versions to this function:

- The first and second versions of the function do not save the matched tokens (these are saved in the backrefs parameters in the third and fourth versions). The difference between the first and second versions is the pat parameter, which can be a VARCHAR2 or a pattern data type.

- The third and fourth versions of the function save the matched tokens in the backrefs parameter. The difference between the third and fourth versions is the pat parameter, which can be a VARCHAR2 or a pattern data type.

Note:

If multiple overlapping strings match the regular expression, this function takes the longest match.

Table 6-4 defines the properties of the owa_pattern.amatch function.

Table 6-4 owa_pattern.amatch function

Properties

Definitions

Syntax:

owa_pattern.amatch(
line           in       varchar2
from_loc       in       integer
pat            in       varchar2
flags          in       varchar2   DEFAULT NULL) return integer;

owa_pattern.amatch(
line           in       varchar2
from_loc       in       integer
pat            in out   pattern
flags          in       varchar2   DEFAULT NULL) return integer;

owa_pattern.amatch(
line           in       varchar2
from_loc       in       integer
pat            in   varchar2
backrefs       out      owa_text.vc_arr
flags          in       varchar2   DEFAULT NULL) return integer;

owa_pattern.amatch(
line           in       varchar2
from_loc       in       integer
pat            in out   pattern
backrefs       out      owa_text.vc_arr
flags          in       varchar2   DEFAULT NULL) return integer;

Parameters:

line - the text to search in.

from_loc - the location (in number of characters) in line where the search is to begin.

pat - the string to match. It can contain regular expressions. This can be either a VARCHAR2 or a pattern. If it is a pattern, the output value of this parameter is the pattern matched.

backrefs - the text that is matched. Each token that is matched is placed in a cell in the owa_text.vc_arr data type PL/SQL table.

flags - whether or not the search is case-sensitive. If the value of this parameter is "i", the search is case-insensitive. Otherwise the search is case-sensitive.

Returns:

The index of the character after the end of the match, counting from the beginning of line. If there was no match, the function returns 0.

6.4 owa_pattern.change function and procedure

This function or procedure searches and replaces a string or multi_line data type. If multiple overlapping strings match the regular expression, this function takes the longest match.

Table 6-5 defines the properties of the owa_pattern.change function and procedure.

Table 6-5 owa_pattern.change function and procedure

Properties

Definitions

Syntax:

/* function */
owa_pattern.change(
line           in out    varchar2
from_str       in        varchar2
to_str         in        varchar2
flags          in        varchar2   DEFAULT NULL) return integer;

/* procedure */
owa_pattern.change(
line           in out   varchar2
from_str       in       varchar2
to_str         in       varchar2
flags          in       varchar2   DEFAULT NULL);

/* function */
owa_pattern.change(
mline          in out   owa_text.multi_line
from_str       in       varchar2
to_str         in       varchar2
flags          in       varchar2   DEFAULT NULL) return integer;

/* procedure */
owa_pattern.change(
mline          in out   owa_text.multi_line
from_str       in       varchar2
to_str         in       varchar2
flags          in       varchar2   DEFAULT NULL);

Parameters:

line - the text to search in. The output value of this parameter is the altered string.

mline - the text to search in. This is a owa_text.multi_line data type data type. The output value of this parameter is the altered string.

from_str - the regular expression to replace.

to_str - the substitution pattern.

flags - whether or not the search is case-sensitive, and whether or not changes are to be made globally. If "i" is specified, the search is case-insensitive. If "g" is specified, changes are made to all matches. Otherwise, the function stops after the first substitution is made.

Returns:

As a function, it returns the number of substitutions made. If the flag `g' is not used, this number can only be 0 or 1 and only the first match is replaced. The flag `g' specifies to replace all matches with the regular expression.

Example:

Example 1:

owa_pattern.change('Cats in pajamas', 'C.+in', '& red ')

The regular expression matches the substring `Cats in'. It then replaces this string with `& red'. The ampersand character (&) indicates `Cats in', since that's what matched the regular expression. Thus, this procedure replaces the string `Cats in pajamas' with 'Cats in red pajamas'. If you called this as a function instead of a procedure, the value it returns is 1, indicating that a single substitution has been made.

Example 2:

create or replace procedure test_pattern as theline VARCHAR2(256);
num_found integer;
begin
theline := 'what is the goal?';
num_found := owa_pattern.change(theline, 'goal', 'idea', 'g');
htp.print(num_found); -- num_found is 1
htp.print(theline); -- theline is 'what is the idea?'
end;
/
show errors

6.5 owa_pattern.getpat procedure

This procedure converts a VARCHAR2 string into a owa_pattern.pattern data type.

Table 6-6 defines the properties of the owa_pattern.getpat procedure.

Table 6-6 owa_pattern.getpat procedure

Properties

Definitions

Syntax:

owa_pattern.getpat(arg in VARCHAR2, pat in out pattern);

Parameters:

arg - the string to convert.

pat - the owa_pattern.pattern data type initialized with arg.

Returns:

None.

6.6 owa_pattern.match function

This function determines if a string contains the specified pattern. The pattern can contain regular expressions. If multiple overlapping strings can match the regular expression, this function takes the longest match.

The regular expression in this function can be either a VARCHAR2 or a owa_pattern.pattern data type. Create a owa_pattern.pattern data type from a string using the owa_pattern.getpat procedure.

Create a multi_line data type from a long string using the owa_text.stream2multi procedure. If a multi_line is used, the rlist parameter specifies a list of chunks where matches were found.

If the line is a string and not a multi_line, you can add an optional output parameter called backrefs. This parameter is a row_list that holds each string in the target that was matched by a sequence of tokens in the regular expression.

Table 6-7 defines the properties of the owa_pattern.match function.

Table 6-7 owa_pattern.match function

Properties

Definitions

Syntax:

owa_pattern.match(
line           in       varchar2
pat            in       varchar2
flags          in       varchar2   DEFAULT NULL) return boolean;

owa_pattern.match(
line           in       varchar2
pat            in out   pattern
flags          in       varchar2   DEFAULT NULL) return boolean;

owa_pattern.match(
line           in       varchar2
pat            in       varchar2
backrefs       out      owa_text.vc_arr
flags          in       varchar2   DEFAULT NULL) return boolean;

owa_pattern.match(
line           in       varchar2
pat            in out   pattern
backrefs       out      owa_text.vc_arr
flags          in       varchar2   DEFAULT NULL) return boolean;

owa_pattern.match(
mline          in       owa_text.multi_line
pat            in       varchar2
rlist          out      owa_text.row_list
flags          in       varchar2   DEFAULT NULL) return boolean;

owa_pattern.match(
mline          in       owa_text.multi_line
pat            in out   pattern
rlist          out      owa_text.row_list
flags          in       varchar2   DEFAULT NULL) return boolean;

Parameters:

line - the text to search in.

mline - the text to search in. This is a owa_text.multi_line data type data type.

pat - the pattern to match. This is either a VARCHAR2 or a owa_pattern.pattern data type data type. It it is a pattern, the output value of this parameter is the pattern matched.

backrefs - the text that is matched. Each token that is matched is placed in a cell in the owa_text.vc_arr data type PL/SQL table. This parameter is a row_list that holds each string in the target that was matched by a sequence of tokens in the regular expression.

rlist - an output parameter containing a list of matches.

flags - whether or not the search is case-sensitive. If the value of this parameter is "i", the search is case-insensitive. Otherwise the search is case-sensitive.

Returns:

TRUE if a match was found, FALSE otherwise.

Examples:

KAZOO is the target where it is searching for the zoo.* regular expression. The period indicates any character other than newline, and the asterisk matches 0 or more of the preceding characters. In this case, it matches any character other than the newline.

Therefore, this regular expression specifies that a matching target consists of zoo, followed by any set of characters neither ending in nor including a newline (which does not match the period). The i flag indicates to ignore case in the search. In this case, the function returns TRUE, which indicates that a match had been found.

boolean foundMatch;
foundMatch := owa_pattern.match('KAZOO', 'zoo.*', 'i');

The following example searches for the string "goal" followed by any number of characters in sometext. If found,

sometext  VARCHAR2(256);
pat       VARCHAR2(256);

sometext := 'what is the goal?'
pat := 'goal.*';
if owa.pattern.match(sometext, pat) then
htp.print('Match found');
else
htp.print('Match not found');
end if;

6.7 owa_pattern.pattern data type

You can use a pattern as both an input and output parameter. Thus, you can pass the same regular expression to OWA_PATTERN function calls, and it only has to be parsed once.

Table 6-8 defines the properties of the owa_pattern.pattern data type.

Table 6-8 owa_pattern.pattern data type

Properties

Definitions

Syntax:

owa_pattern.pattern - data type

Returns:

Not applicable.

7 The owa_sec Package

This chapter describes the functions, procedures, and data types in the owa_sec package in the PL/SQL Web Toolkit.

Note:

Use the procedures and functions in the owa_sec package for custom authentication.

Parameters that have default values are optional.

7.1 Summary

owa_sec.get_client_hostname function - returns the client's hostname.

owa_sec.get_client_ip function - returns the client's IP address.

owa_sec.get_password function - returns the password that the user entered.

owa_sec.get_user_id function - returns the username that the user entered.

owa_sec.set_authorization procedure - enables the PL/SQL application to use custom authentication.

owa_sec.set_protection_realm procedure - defines the realm that the page is in.

7.2 owa_sec.get_client_hostname function

This function returns the hostname of the client.

Table 7-1 defines the properties of the owa_sec.get_client_hostname function.

Table 7-1 owa_sec.get_client_hostname function

Properties

Definitions

Syntax:

owa_sec.get_client_hostname return varchar2;

Parameters:

None.

Returns:

The hostname.

7.3 owa_sec.get_client_ip function

This function returns the IP address of the client.

Table 7-2 defines the properties of the owa_sec.get_client_ip function.

Table 7-2 owa_sec.get_client_ip function

Properties

Definitions

Syntax:

owa_sec.get_client_ip return owa_util.ip_address;

Parameters:

None.

Returns:

The IP address. The owa_util.ip_address data type is a PL/SQL table where the first four elements contain the four numbers of the IP address. For example, if the IP address is 123.45.67.89 and the variable ipaddr is of the owa_util.ip_address data type, the variable would contain the following values:

ipaddr(1) = 123
ipaddr(2) = 45
ipaddr(3) = 67
ipaddr(4) = 89

7.4 owa_sec.get_password function

This function returns the password that the user used to log in. For security reasons, this function returns a true value only when custom authentication is used. If you call this function when you are not using custom authentication, the function returns an undefined value. Thus, the database passwords are not exposed.

Table 7-3 defines the properties of the owa_sec.get_password function.

Table 7-3 owa_sec.get_password function

Properties

Definitions

Syntax:

owa_sec.get_password return varchar2;

Parameters:

None.

Returns:

The password.

7.5 owa_sec.get_user_id function

This function returns the username that the user used to log in.

Table 7-4 defines the properties of the owa_sec.get_user_id function.

Table 7-4 owa_sec.get_user_id function

Properties

Definitions

Syntax:

owa_sec.get_user_id return varchar2;

Parameters:

None.

Returns:

The username.

7.6 owa_sec.set_authorization procedure

This procedure, called in the initialization portion of the owa_custom package, sets the authorization scheme for the PL/SQL Gateway. This implements your authorize function, which authorizes the user before his requested procedure is run. The placement of the authorize function depends on the scheme you selected.

Table 7-5 defines the properties of the owa_sec.set_authorization procedure.

Table 7-5 owa_sec.set_authorization procedure

Properties

Definitions

Syntax:

owa_sec.set_authorization(scheme in integer);

Parameters:

scheme - the authorization scheme. It is one of the following schemes for set_authorization:

OWA_SEC.NO_CHECK - Specifies that the PL/SQL application is not to do any custom authentication. This is the default.

OWA_SEC.GLOBAL - Defines an authorize function that is called for all users and all procedures. The function is owa_custom.authorize function in the "sys" schema.

OWA_SEC.PER_PACKAGE - Define an authorize function that is called when procedures in a package or anonymous procedures are called. If the procedures are in a package, the package.authorize function in the user's schema is called to authorize the user. If the procedures are not in a package, then the anonymous authorize function in the user's schema is called.

OWA_SEC.CUSTOM - Implements different authorize functions for each user. The function owa_custom.authorize in the user's schema is called to authorize the user. If the user's schema does not contain an owa_custom.authorize function, the PL/SQL Gateway looks for it in the "sys" schema.

The custom authorize function has the following signature:

function authorize return boolean;

If the function returns TRUE, authentication succeeded. If it returns FALSE, authentication failed. If the authorize function is not defined, the Gateway returns an error and fails.

Returns:

Not applicable

7.7 owa_sec.set_protection_realm procedure

This procedure sets the realm of the page that is returned to the user. The user enters a username and login that already exist in the realm.

Table 7-6 defines the properties of the owa_sec.set_protection_realm procedure.

Table 7-6 owa_sec.set_protection_realm procedure

Properties

Definitions

Syntax:

owa_sec.set_protection_realm(realm in varchar2);

Parameters:

realm - the realm where the page belongs. This string is displayed to the user.

Returns:

Not applicable.

8 The owa_text Package

The owa_text package contains subprograms used by owa_pattern for manipulating strings. They are externalized so you can use them directly.

8.1 Summary

owa_text.add2multi procedure - adds text to an existing multi_line type.

owa_text.multi_line data type - data type for holding large amounts of text.

owa_text.new_row_list - creates a new row_list.

owa_text.print_multi procedure - prints out the contents of a multi_list.

owa_text.print_row_list procedure - prints out the contents of a row_list.

owa_text.row_list data type - data type for holding data to be processed.

owa_text.stream2multi procedure - converts a varchar2 to a multi_line type.

owa_text.vc_arr data type - data type for holding large amounts of text.

8.2 owa_text.add2multi procedure

This procedure adds content to an existing owa_text.multi_line data type.

Table 8-1 describes the properties of the owa_text.add2multi procedure.

Table 8-1 owa_text.add2multi procedure

Properties

Definitions

Syntax:

owa_text.add2multi(
stream         in       varchar2
mline          in out   multi_line
continue       in       boolean   DEFAULT TRUE);

Parameters:

stream - the text to add.

mline - the owa_text.multi_line data type. The output of this parameter contains stream.

continue - if TRUE, the procedure appends stream within the previous final row (assuming it is less than 32K). If FALSE, the procedure places stream in a new row.

Returns:

None.

8.3 owa_text.multi_line data type

This data type is a PL/SQL record that holds large amounts of text. The rows field, of type owa_text.vc_arr data type, contains the text data in the record.

Table 8-2 describes the properties of the owa_text.multi_line data type.

Table 8-2 owa_text.multi_line data type

Properties

Definitions

Syntax:

type multi_line is record (
rows           vc_arr,
num_rows       integer,
partial_row    boolean);

Returns:

Not applicable.

8.4 owa_text.new_row_list

This function or procedure creates a new owa_text.row_list data type. The function version uses no parameters and returns a new empty row_list. The procedure version creates the row_list data type as an output parameter.

Table 8-3 describes the properties of the owa_text.new_row_list.

Table 8-3 owa_text.new_row_list

Properties

Definitions

Syntax:

/* procedure */
owa_text.new_row_list(rlist out row_list);
/* function */
owa_text.new_row_list return row_list;

Parameters:

rlist - this is an output parameter containing the new row_list data type.

Returns:

The function version returns the new row_list data type.

8.5 owa_text.print_multi procedure

This procedure uses htp.print, htp.prn to print the "rows" field of the owa_text.multi_line data type.

Table 8-4 describes the properties of the owa_text.print_multi procedure.

Table 8-4 owa_text.print_multi procedure

Properties

Definitions

Syntax:

owa_text.print_multi(mline in multi_line);

Parameters:

mline - the multi_line data type to print.

Returns:

The contents of the multi_line.

8.6 owa_text.print_row_list procedure

This procedure uses htp.print, htp.prn to print the "rows" field of the owa_text.row_list data type.

Table 8-5 describes the properties of the owa_text.print_row_list procedure.

Table 8-5 owa_text.print_row_list procedure

Properties

Definitions

Syntax:

owa_text.print_row_list(rlist in row_list);

Parameters:

rlist - the row_list data type to print.

Returns:

The contents of the row_list.

8.7 owa_text.row_list data type

This is the data type for holding data to be processed.

Table 8-6 describes the properties of the owa_text.row_list data type.

Table 8-6 owa_text.row_list data type

Properties

Definitions

Syntax:

type row_list is record (
rows           int_arr,
num_rows       integer);
int_arr is defined as:
type int_arr is table of integer index by binary_integer;

Returns:

Not applicable.

8.8 owa_text.stream2multi procedure

This procedure converts a string to a multi_line data type.

Table 8-7 describes the properties of the owa_text.stream2multi procedure.

Table 8-7 owa_text.stream2multi procedure

Properties

Definitions

Syntax:

owa_text.stream2multi(

stream         in       varchar2

mline          out      multi_line);

Parameters:

stream - the string to convert.

mline - the stream in owa_text.multi_line data type format.

Returns:

None.

8.9 owa_text.vc_arr data type

This is a component of the owa_text.multi_line data type.

Table 8-8 describes the properties of the owa_text.vc_arr data type.

Table 8-8 owa_text.vc_arr data type

Properties

Definitions

Syntax:

type vc_arr is table of varchar2(32767) index by binary_integer;

Returns:

Not applicable.

9 The owa_util Package

The owa_util package contains utility subprograms for performing operations such as getting the value of CGI environment variables, printing the data that is returned to the client, and printing the results of a query in an HTML table.

The owa_util contains three types of utility subprograms.

- Dynamic SQL Utilities enable you to produce pages with dynamically generated SQL code.

- HTML utilities enable you to retrieve the values of CGI environment variables and perform URL redirects.

- Date utilities enable correct date-handling. Date values are simple strings in HTML, but are treated as a data type by the Oracle database.

9.1 Summary

owa_util.bind_variables function - prepares a SQL query and binds variables to it.

owa_util.calendarprint procedure - prints a calendar.

owa_util.cellsprint procedure - prints the contents of a query in an HTML table.

owa_util.choose_date procedure - generates HTML form elements that allow the user to select a date.

owa_util.dateType data type - data type to hold date information.

owa_util.get_cgi_env function - returns the value of the specified CGI environment variable.

owa_util.get_owa_service_path function - returns the full virtual path for the PL/SQL Gateway.

owa_util.get_procedure function - returns the name of the procedure that is invoked by the PL/SQL Gateway.

owa_util.http_header_close procedure - closes the HTTP header.

owa_util.ident_arr data type - a data type

owa_util.ip_address data type - used by the owa_sec.get_client_ip function.

owa_util.listprint procedure - generates a HTML form element that contains data from a query.

owa_util.mime_header procedure - generates the Content-type line in the HTTP header.

owa_util.print_cgi_env procedure - generates a list of all CGI environment variables and their values.

owa_util.redirect_url procedure - generates the Location line in the HTTP header.

owa_util.showpage procedure - prints a page generated by the htp and htf packages in SQL*Plus.

owa_util.showsource procedure - prints the source for the specified subprogram.

owa_util.signature procedure - prints a line that says that the page is generated by the PL/SQL Agent.

owa_util.status_line procedure - generates the Status line in the HTTP header.

owa_util.tablePrint function - prints the data from a table in the database as an HTML table.

owa_util.todate function - converts dateType data to the standard PL/SQL date type.

owa_util.who_called_me procedure - returns information on the caller of the procedure.

9.2 owa_util.bind_variables function

This function prepares a SQL query by binding variables to it, and stores the output in an opened cursor. Use this function as a parameter to a procedure sending a dynamically generated query. Specify up to 25 bind variables.

Table 9-1 describes the properties of the owa_util.bind_variables function.

Table 9-1 owa_util.bind_variables function

Properties

Definitions

Syntax:

owa_util.bind_variables(
theQuery       in       varchar2   DEFAULT NULL
bv1Name        in       varchar2   DEFAULT NULL
bv1Value       in       varchar2   DEFAULT NULL
bv2Name        in       varchar2   DEFAULT NULL
bv2Value       in       varchar2   DEFAULT NULL
bv3Name        in       varchar2   DEFAULT NULL
bv3Value       in       varchar2   DEFAULT NULL
...
bv25Name       in       varchar2   DEFAULT NULL
bv25Value      in       varchar2   DEFAULT NULL) return integer;

Parameters:

theQuery - the SQL query statement. This must be a SELECT statement.

bv1Name - the name of the variable.

bv2Value - the value of the variable.

Returns:

An integer identifying the opened cursor.

9.3 owa_util.calendarprint procedure

This procedure creates a calendar in HTML. Each date in the calendar can contain any number of hypertext links. Design your query as follows:

- The first column is a DATE. This correlates the information produced by the query with the calendar output generated by the procedure.

- The query output must be sorted on this column using ORDER BY.

- The second column contains the text, if any, that you want printed for that date.

- The third column contains the destination for generated links. Each item in the second column becomes a hypertext link to the destination given in this column. If this column is omitted, the items in the second column are simple text, not links.

This procedure has 2 versions. Version 1 uses a hard-coded query stored in a varchar2 string. Version 2 uses a dynamic query prepared with the owa_util.bind_variables function.

Table 9-2 describes the properties of the owa_util.calendarprint procedure.

Table 9-2 owa_util.calendarprint procedure

Properties

Definitions

Syntax:

owa_util.calendarprint(
p_query        in       varchar2
p_mf_only      in       varchar2   DEFAULT 'N');

owa_util.calendarprint(
p_cursor       in       integer
p_mf_only      in       varchar2   DEFAULT 'N');

Parameters:

p_query - a PL/SQL query. See the preceding description for details of the query return.

p_cursor - a PL/SQL cursor containing the same format as p_query.

p_mf_only - if "N" (the default), the generated calendar includes Sunday through Saturday. Otherwise, it includes Monday through Friday only.

Generates:

A calendar in the form of an HTML table with a visible border.

9.4 owa_util.cellsprint procedure

This procedure generates an HTML table from the output of a SQL query. SQL atomic data items are mapped to HTML cells and SQL rows to HTML rows. You must write the code to begin and end the HTML table. There are nine versions of this procedure:

- The first version passes the results of a query into an index table. Perform the query and cellsprint does the formatting. To have more control in generating an HTML table from the output of an SQL query, use the htf.format_cell function.

- The second and third versions display rows (up to the specified maximum) returned by the query or cursor.

- The fourth and fifth versions exclude a specified number of rows from the HTML table. Use the fourth and fifth versions to scroll through result sets by saving the last row seen in a hidden form element.

The sixth through ninth versions are the same as the first four versions, except that they return a row count output parameter.

Table 9-3 describes the properties of the owa_util.cellsprint procedure.

Table 9-3 owa_util.cellsprint procedure

Properties

Definitions

Syntax:

owa_util.cellsprint(
p_colCnt          in    integer
p_resultTbl       in    vc_arr
p_format_numbers  in    varchar2   DEFAULT NULL);

owa_util.cellsprint(
p_theQuery        in    varchar2
p_max_rows        in    number     DEFAULT 100
p_format_numbers  in    varchar2   DEFAULT NULL);

owa_util.cellsprint(
p_theCursor       in    integer
p_max_rows        in    number     DEFAULT 100
p_format_numbers  in    varchar2   DEFAULT NULL);

owa_util.cellsprint(
p_theQuery        in    varchar2
p_max_rows        in    number     DEFAULT 100
p_format_numbers  in    varchar2   DEFAULT NULL
p_skip_rec        in    number      DEFAULT 0
p_more_data       out   boolean);

owa_util.cellsprint(
p_theCursor       in    integer
p_max_rows        in    number     DEFAULT 100
p_format_numbers  in    varchar2   DEFAULT NULL
p_skip_rec        in    number     DEFAULT 0
p_more_data       out   boolean);

owa_util.cellsprint(
p_theQuery        in    varchar2
p_max_rows        in    number     DEFAULT 100
p_format_numbers  in    varchar2   DEFAULT NULL
p_reccnt          out   number);

owa_util.cellsprint(
p_theCursor       in    integer
p_max_rows        in    number     DEFAULT 100
p_format_numbers  in    varchar2   DEFAULT NULL
p_reccnt          out   number);

owa_util.cellsprint(
p_theQuery        in    varchar2
p_max_rows        in    number     DEFAULT 100
p_format_numbers  in    varchar2   DEFAULT NULL
p_skip_rec        in    number     DEFAULT 0
p_more_data       out   boolean
p_reccnt          out   number);

owa_util.cellsprint(
p_theCursor       in    integer
p_max_rows        in    number     DEFAULT 100
p_format_numbers  in    varchar2   DEFAULT NULL
p_skip_rec        in    number     DEFAULT 0
p_more_data       out   boolean
p_reccnt          out   number);

Parameters:

p_colCnt - the number of columns in the table.

p_theQuery - a SQL SELECT statement.

p_theCursor - a cursor ID. This can be the return value from the owa_util.bind_variables function.

p_max_rows - the maximum number of rows to print.

p_format_numbers - if the value of this parameter is not NULL, number fields are right-justified and rounded to two decimal places.

p_skip_rec - the number of rows to exclude from the HTML table.

p_more_data - TRUE if there are more rows in the query or cursor, FALSE otherwise.

p_reccnt - the number of rows that have been returned by the query. This value does not include skipped rows (if any).

p_resultTbl - the index table which will contain the result of the query. Each entry in the query will correspond to one column value.

Generates:

<tr><td>QueryResultItem</td><td>QueryResultItem</td></tr>
<tr><td>QueryResultItem</td><td>QueryResultItem</td></tr>

9.5 owa_util.choose_date procedure

This procedure generates three HTML form elements that allow the user to select the day, the month, and the year. The parameter in the procedure that receives the data from these elements must be a owa_util.dateType data type. Use the owa_util.todate function to convert the owa_util.dateType data type value to the standard Oracle Database version 7 DATE data type.

Table 9-4 describes the properties of the owa_util.choose_date procedure.

Table 9-4 owa_util.choose_date procedure

Properties

Definitions

Syntax:

owa_util.choose_date(
p_name         in       varchar2,
p_date         in       date       DEFAULT SYSDATE);

Parameters:

p_name - the name of the form elements.

p_date - the initial date that is selected when the HTML page is displayed.

Generates:

<SELECT NAME="p_name" SIZE="1">
<OPTION value="01">1
...
<OPTION value="31">31
</SELECT>
-
<SELECT NAME="p_name" SIZE="1">
<OPTION value="01">JAN
...
<OPTION value="12">DEC
</SELECT>
-
<SELECT NAME="p_name" SIZE="1">
<OPTION value="1992">1992
...
<OPTION value="2002">2002
</SELECT>

9.6 owa_util.dateType data type

The owa_util.todate function converts an item of this type to the type DATE, which is understood and properly handled as data by the database. The procedure owa_util.choose_date procedure enables the user to select the desired date.

Table 9-5 describes the properties of the owa_util.dateType data type.

Table 9-5 owa_util.dateType data type

Properties

Definitions

Syntax:

type dateType is table of varchar2(10) index by binary_integer;

Returns:

Not applicable.

9.7 owa_util.get_cgi_env function

This function returns the value of the specified CGI environment variable. Although the WRB is not operated through CGI, many WRB cartridges, including the PL/SQL Gateway, can make use of CGI environment variables.

Table 9-6 describes the properties of the owa_util.get_cgi_env function.

Table 9-6 owa_util.get_cgi_env function

Properties

Definitions

Syntax:

owa_util.get_cgi_env(param_name in varchar2) return varchar2;

Parameters:

param_name - the name of the CGI environment variable. It is case-insensitive. Get the values of all CGI environment variables except for QUERY_STRING because the PL/SQL Gateway parses the value of QUERY_STRING to determine the parameters to pass to the stored procedure.

Returns:

The value of the specified CGI environment variable. If the variable is not defined, the function returns NULL.

9.8 owa_util.get_owa_service_path function

This function returns the full virtual path of the PL/SQL Gateway that is handling the request.

Table 9-7 describes the properties of the owa_util.get_owa_service_path function.

Table 9-7 owa_util.get_owa_service_path function

Properties

Definitions

Syntax:

owa_util.get_owa_service_path return varchar2;

Parameters:

None.

Returns:

A virtual path of the PL/SQL Gateway that is handling the request.

9.9 owa_util.get_procedure function

This function returns the name of the procedure that is being invoked by the PL/SQL Gateway.

Table 9-8 describes the properties of the owa_util.get_procedure function.

Table 9-8 owa_util.get_procedure function

Properties

Definitions

Syntax:

owa_util.get_procedure return varchar2;

Parameters:

None.

Returns:

The name of a procedure, including the package name if the procedure is defined in a package.

9.10 owa_util.http_header_close procedure

This procedure generates a newline character to close the HTTP header. Use this procedure if you have not closed the header by using the bclose_header parameter in calls such as owa_util.mime_header procedure, owa_util.redirect_url procedure, or owa_util.status_line procedure. The HTTP header must be closed before any htp.print or htp.prn calls.

Table 9-9 describes the properties of the owa_util.http_header_close procedure.

Table 9-9 owa_util.http_header_close procedure

Properties

Definitions

Syntax:

owa_util.http_header_close;

Parameters:

None.

Generates:

A newline character, which closes the HTTP header.

9.11 owa_util.ident_arr data type

This data type is used for an array.

Table 9-10 describes the properties of the owa_util.ident_arr data type.

Table 9-10 owa_util.ident_arr data type

Properties

Definitions

Syntax:

type ident_arr is table of varchar2(30) index by binary_integer;

Returns:

Not applicable.

9.12 owa_util.ip_address data type

This data type is used by the owa_sec.get_client_ip function.

Table 9-11 describes the properties of the owa_util.ip_address data type.

Table 9-11 owa_util.ip_address data type

Properties

Definitions

Syntax:

type ip_address is table of integer index by binary_integer;

Returns:

Not applicable.

9.13 owa_util.listprint procedure

This procedure generates an HTML selection list form element from the output of a SQL query. The columns in the output of the query are handled in the following manner:

- The first column specifies the values that are sent back. These values are for the VALUE attribute of the OPTION tag.

- The second column specifies the values that the user sees.

- The third column specifies whether or not the row is marked as SELECTED in the OPTION tag. If the value is not NULL, the row is selected.

There are two versions of this procedure. The first version contains a hard-coded SQL query, and the second version uses a dynamic query prepared with the owa_util.bind_variables function.

Table 9-12 describes the properties of the owa_util.listprint procedure.

Table 9-12 owa_util.listprint procedure

Properties

Definitions

Syntax:

owa_util.listprint(
p_theQuery     in       varchar2
p_cname        in       varchar2
p_nsize        in       number
p_multiple     in       boolean   DEFAULT FALSE);

owa_util.listprint(
p_theCursor    in    integer
p_cname        in       varchar2
p_nsize        in       number
p_multiple     in       boolean   DEFAULT FALSE);

Parameters:

p_theQuery - the SQL query.

p_theCursor - the cursor ID. This can be the return value from the owa_util.bind_variables function.

p_cname - the name of the HTML form element.

p_nsize - the size of the form element (this controls how many items the user can see without scrolling).

p_multiple - whether multiple selection is permitted.

Generates:

<SELECT NAME="p_cname" SIZE="p_nsize">
<OPTION SELECTED value='value_from_the_first_column'>value_from_the_second_column
<OPTION SELECTED value='value_from_the_first_column'>value_from_the_second_column
...
</SELECT>

9.14 owa_util.mime_header procedure

This procedure changes the default MIME header that the script returns. This procedure must come before any htp.print or htp.prn calls to direct the script not to use the default MIME header.

Table 9-13 describes the properties of the owa_util.mime_header procedure.

Table 9-13 owa_util.mime_header procedure

Properties

Definitions

Syntax:

owa_util.mime_header(
ccontent_type  in       varchar2   DEFAULT 'text/html',
bclose_header  in       boolean    DEFAULT TRUE,
ccharset       in       varchar2   DEFAULT NULL);

Parameters:

ccontent_type - the MIME type to generate.

bclose_header - whether or not to close the HTTP header. If TRUE, two newlines are sent, which closes the HTTP header. Otherwise, one newline is sent, and the HTTP header remains open.

ccharset - the character set to use.

Generates:

Content-type: <ccontent_type>; charset=<ccharset>

Example:

owa_util.mime_header('text/plain', false, 'ISO-8859-4')
generates:
Content-type: text/plain; charset=ISO-8859-4\n

9.15 owa_util.print_cgi_env procedure

This procedure generates all the CGI environment variables and their values made available by the PL/SQL Gateway to the stored procedure.

Table 9-14 describes the properties of the owa_util.print_cgi_env procedure.

Table 9-14 owa_util.print_cgi_env procedure

Properties

Definitions

Syntax:

owa_util.print_cgi_env;

Parameters:

None.

Generates:

A list in the following format:

cgi_env_var_name = value\n

9.16 owa_util.redirect_url procedure

This procedure specifies that the application server is to visit the specified URL. The URL may specify either a web page to return or a program to execute. This procedure must come before any htp or htf procedure or function call.

Table 9-15 describes the properties of the owa_util.redirect_url procedure.

Table 9-15 owa_util.redirect_url procedure

Properties

Definitions

Syntax:

owa_util.redirect_url(
curl           in       varchar2
bclose_header  in       boolean    DEFAULT TRUE);

Parameters:

curl - the URL to visit.

bclose_header - whether or not to close the HTTP header. If TRUE, two newlines are sent, which closes the HTTP header. Otherwise, one newline is sent, and the HTTP header is still open.

Generates:

Location: <curl>\n\n

9.17 owa_util.showpage procedure

This procedure prints out the HTML output of a procedure in SQL*Plus, SQL*DBA, or Oracle Server Manager. The procedure must use the htp or htf packages to generate the HTML page, and this procedure must be issued after the procedure has been called and before any other HTP or HTF subprograms are directly or indirectly called. This method is useful for generating pages filled with static data. This procedure uses dbms_output and is limited to 255 characters for each line and an overall buffer size of 1,000,000 bytes.

Table 9-16 describes the properties of the owa_util.showpage procedure.

Table 9-16 owa_util.showpage procedure

Properties

Definitions

Syntax:

owa_util.showpage;

Parameters:

None.

Generates:

The output of htp procedure is displayed in SQL*Plus, SQL*DBA, or Oracle Server Manager. For example:

SQL> set serveroutput on
SQL> spool gretzky.html
SQL> execute hockey.pass("Gretzky")
SQL> execute owa_util.showpage
SQL> exit

This would generate an HTML page that could be accessed from Web browsers.

9.18 owa_util.showsource procedure

This procedure prints the source of the specified procedure, function, or package. If a procedure or function which belongs to a package is specified, then the entire package is displayed.

Table 9-17 describes the properties of the owa_util.showsource procedure.

Table 9-17 owa_util.showsource procedure

Properties

Definitions

Syntax:

owa_util.showsource (cname in varchar2);

Parameters:

cname - name of the procedure or function.

Generates:

The source code of the specified function, procedure, or package.

9.19 owa_util.signature procedure

This procedure generates an HTML line followed by a signature line on the HTML document. If a parameter is specified, the procedure also generates a hypertext link to view the PL/SQL source for that procedure. The link calls the owa_util.showsource procedure.

Table 9-18 describes the properties of the owa_util.signature procedure.

Table 9-18 owa_util.signature procedure

Properties

Definitions

Syntax:

owa_util.signature;
owa_util.signature (cname in varchar2);

Parameters:

cname - the function or procedure whose source you want to show.

Generates:

Without a parameter, the procedure generates a line that looks like the following:

This page was produced by the PL/SQL Agent on August 9, 2001 09:30.

With a parameter, the procedure generates a signature line in the HTML document that looks like the following:

This page was produced by the PL/SQL Agent on 8/09/01 09:30
View PL/SQL Source

9.20 owa_util.status_line procedure

This procedure sends a standard HTTP status code to the client. This procedure must come before any htp.print or htp.prn calls so that the status code is returned as part of the header, rather than as "content data".

Table 9-19 describes the properties of the owa_util.status_line procedure.

Table 9-19 owa_util.status_line procedure

Properties

Definitions

Syntax:

owa_util.status_line(
nstatus        in       integer,
creason        in       varchar2   DEFAULT NULL
bclose_header  in       boolean    DEFAULT TRUE);

Parameters:

nstatus - the status code.

creason - the string for the status code.

bclose_header - whether or not to close the HTTP header. If TRUE, two newlines are sent, which closes the HTTP header. Otherwise, one newline is sent, and the HTTP header is still open.

Generates:

Status: <nstatus> <creason>\n\n

9.21 owa_util.tablePrint function

This function generates either preformatted tables or HTML tables (depending on the capabilities of the user's browser) from database tables. RAW columns are supported, but LONG RAW columns are not. References to LONG RAW columns will print the result 'Not Printable'. In this function, cattributes is the second, rather than the last, parameter.

Table 9-20 describes the properties of the owa_util.tablePrint function.

Table 9-20 owa_util.tablePrint function

Properties

Definitions

Syntax:

owa_util.tablePrint(
ctable         in       varchar2
cattributes    in       varchar2   DEFAULT NULL
ntable_type    in       integer    DEFAULT HTML_TABLE
ccolumns       in       varchar2   DEFAULT '*'
cclauses       in    varchar2   DEFAULT NULL
ccol_aliases   in       varchar2   DEFAULT NULL
nrow_min       in       number     DEFAULT 0
nrow_max       in       number     DEFAULT NULL) return boolean;

Parameters:

ctable - the database table.

cattributes - other attributes to be included as-is in the tag.

ntable_type - how to generate the table. Specify "HTML_TABLE" to generate the table using <TABLE> tags or "PRE_TABLE" to generate the table using the <PRE> tags.

ccolumns - a comma-delimited list of columns from ctable to include in the generated table.

cclauses - WHERE or ORDER BY clauses, which specify which rows to retrieve from the database table, and how to order them.

ccol_aliases - a comma-delimited list of headings for the generated table.

nrow_min - the first row, of those retrieved, to display.

nrow_max - the last row, of those retrieved, to display.

Generates:

A preformatted or HTML table. Returns TRUE if there are more rows beyond the nrow_max requested, FALSE otherwise.

Examples:

For browsers that do not support HTML tables, create the following procedure:

create or replace procedure showemps is
ignore_more boolean;
begin
ignore_more := owa_util.tablePrint('emp', 'BORDER', OWA_UTIL.PRE_TABLE);
end;

Requesting a URL such as: http://myhost:8080/ows-bin/hr/plsql/showemps returns the following to the client:

<PRE>
-----------------------------------------------------------------
| EMPNO |ENAME |JOB      |MGR   |HIREDATE   | SAL | COMM | DEPTNO |
-----------------------------------------------------------------
| 7369| SMITH  | CLERK   | 7902 | 17-DEC-80 | 800  |     | 20     |
| 7499| ALLEN  | SALESMAN| 7698 | 20-FEB-81 | 1600 | 300 | 30     |
| 7521| WARD   | SALESMAN| 7698 | 22-FEB-81 | 1250 | 500 | 30     |
| 7566| JONES  | MANAGER | 7839 | 02-APR-81 | 2975 |     | 20     |
| 7654| MARTIN | SALESMAN| 7698 | 28-SEP-81 | 1250 | 1400| 30     |
| 7698| BLAKE  | MANAGER | 7839 | 01-MAY-81 | 2850 |     | 30     |
| 7782| CLARK  | MANAGER | 7839 | 09-JUN-81 | 2450 |     | 10     |
| 7788| SCOTT  | ANALYST | 7566 | 09-DEC-82 | 3000 |     | 20     |
| 7839| KING   |PRESIDENT|      | 17-NOV-81 | 5000 |     | 10     |
| 7844| TURNER | SALESMAN| 7698 | 08-SEP-81 | 1500 | 0   | 30     |
| 7876| ADAMS  | CLERK   | 7788 | 12-JAN-83 | 1100 |     | 20     |
| 7900| JAMES  | CLERK   | 7698 | 03-DEC-81 | 950  |     | 30     |
| 7902| FORD   | ANALYST | 7566 | 03-DEC-81 | 3000 |     | 20     |
| 7934| MILLER | CLERK   | 7782 | 23-JAN-82 | 1300 |     | 10     |
-----------------------------------------------------------------
</PRE>

To view the employees in department 10, and only their employee ids, names, and salaries, create the following procedure:

create or replace procedure showemps_10 is
ignore_more boolean;
begin
ignore_more := owa_util.tablePrint
('EMP', 'BORDER', OWA_UTIL.PRE_TABLE,
'empno, ename, sal',
'where deptno=10 order by empno',
'Employee Number, Name, Salary');
end;

A request for a URL like http://myhost:8080/ows-bin/hr/plsql/showemps_10 would return the following to the client:

<PRE>
-------------------------------------
| Employee Number |Name     | Salary |
-------------------------------------
| 7782            | CLARK   | 2450   |
| 7839            | KING    | 5000   |
| 7934            | MILLER  | 1300   |
-------------------------------------
</PRE>

For browsers that support HTML tables, to view the department table in an HTML table, create the following procedure:

create or replace procedure showdept is
ignore_more boolean;
begin
ignore_more := owa_util.tablePrint('dept', 'BORDER');
end;

A request for a URL like http://myhost:8080/ows-bin/hr/plsql/showdept would return the following to the client:

<TABLE BORDER>
<TR>
<TH>DEPTNO</TH>
<TH>DNAME</TH>
<TH>LOC</TH>
</TR>
<TR>
<TD ALIGN="LEFT">10</TD>
<TD ALIGN="LEFT">ACCOUNTING</TD>
<TD ALIGN="LEFT">NEW YORK</TD>
</TR>
<TR>
<TD ALIGN="LEFT">20</TD>
<TD ALIGN="LEFT">RESEARCH</TD>
<TD ALIGN="LEFT">DALLAS</TD>
</TR>
<TR>
<TD ALIGN="LEFT">30</TD>
<TD ALIGN="LEFT">SALES</TD>
<TD ALIGN="LEFT">CHICAGO</TD>
</TR>
<TR>
<TD ALIGN="LEFT">40</TD>
<TD ALIGN="LEFT">OPERATIONS</TD>
<TD ALIGN="LEFT">BOSTON</TD>
</TR>
</TABLE>

A Web browser would format this to look like the following table:

--------------------------------------
| DEPTNO  | DNAME         | LOC      |
|------------------------------------|
| 10      | ACCOUNTING    | NEW YORK |
| 20      | RESEARCH      | DALLAS   |
| 30      | SALES         | CHICAGO  |
--------------------------------------

9.22 owa_util.todate function

This function converts the owa_util.dateType data type to the standard Oracle database DATE type.

Table 9-21 describes the properties of the owa_util.todate function.

Table 9-21 owa_util.todate function

Properties

Definitions

Syntax:

owa_util.todate(p_dateArray in dateType) return date;

Parameters:

p_dateArray - the value to convert.

Generates

A standard DATE.

9.23 owa_util.who_called_me procedure

This procedure returns information (in the form of output parameters) about the PL/SQL code unit that invoked it.

Table 9-22 describes the properties of the owa_util.who_called_me procedure.

Table 9-22 owa_util.who_called_me procedure

Properties

Definitions

Syntax:

owa_util.who_called_me(
owner          out      varchar2
name           out      varchar2
lineno         out      number
caller_t       out      varchar2);

Parameters:

owner - the owner of the program unit.

name - the name of the program unit. This is the name of the package, if the calling program unit is wrapped in a package, and the name of the procedure or function if the calling program unit is a standalone procedure or function. If the calling program unit is part of an anonymous block, this is NULL.

lineno - the line number within the program unit where the call was made.

caller_t - the type of program unit that made the call. The possibilities are: package body, anonymous block, procedure, and function. Procedure and function are only for standalone procedures and functions.

Generates

Not applicable.

Index

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  R  S  T  U  V  W

A

address tag, 1.2, 6.3

anchor, 1.3

applet tags, 1.1, 1.4

area tag, 1.5

B

base tag, 1.6

basefront tag, 1.7

bgsound tag, 1.8

big tag, 1.9

blockquote tag

closed, 1.10

open, 1.10

body tag, 1.11

bold tag, 1.12

C

cache, 2

center tag

tags

center, 1.13

centerclose tag, 1.14

centeropen tag, 1.14

CGI environment variables, 9.7, 9.15

character formatting tags (PL/SQL cartridge), 1.1

checkbox form, 1.31

cite tag, 1.15

code tag, 1.16

comments in HTML, 1.17

D

database

locking, 5

dfn tag, 1.18

dirlistclose tag, 1.19

dirlistopen tag, 1.19

div tag, 1.20

dlistDef tag, 1.22

dlistTerm tag, 1.23

download_file, 1.24

E

emphasis tag, 1.26

environment variables

retrieving in the PL/SQL Cartridge, 9.7

escape_sc, 1.27

escape_url, 1.28

etag, 2.7

expires caching, 2.3

F

fontClose tag, 1.29

fontOpen tag, 1.29

fonts

big, 1.9

form tags, 1.1

formCheckbox, 1.31

formClose tag, 1.32

formFile, 1.33

formHidden, 1.34

formImage, 1.35

formOpen tag, 1.32

formPassword, 1.36

formRadio, 1.37

formReset, 1.38

formSelectClose, 1.39

formSelectOpen, 1.39

formSelectOption, 1.40

formSubmit, 1.41

formText, 1.42

formTextarea, 1.43

formTextarea2, 1.43

frame tag, 1.45

frame tags, 1.1

framesetClose, 1.46

G

get_download_files_list, 1.25

H

head tag, 1.47

heading tag, 1.48

HTML comment, 1.17

htmlClose tag, 1.49

htmlOpen tag, 1.49

htp.address, 1.2, 6.3

htp.anchor, 1.3

htp.anchor2, 1.3

htp.appletclose, 1.4

htp.appletopen, 1.4

htp.area, 1.5

htp.base, 1.6

htp.basefont, 1.7

htp.bgsound, 1.8

htp.big, 1.9

htp.blockquoteClose, 1.10

htp.blockquoteOpen, 1.10

htp.bodyClose, 1.11, 1.11

htp.bold, 1.12

htp.br, 1.64

htp.center, 1.13

htp.centerClose, 1.14

htp.centerOpen, 1.14

htp.cite, 1.15

htp.code, 1.16

htp.comment, 1.17

htp.dfn, 1.18

htp.dirlistClose, 1.19

htp.dirlistOpen, 1.19

htp.div, 1.20

htp.dlistClose, 1.21

htp.dlistDef, 1.22

htp.dlistOpen, 1.21

htp.dlistTerm, 1.23

htp.em, 1.25

htp.emphasis, 1.25

htp.fontClose, 1.29

htp.fontOpen, 1.29

htp.formCheckbox, 1.31

htp.formClose, 1.32

htp.formFile, 1.33

htp.formHidden, 1.34

htp.formImage, 1.35

htp.formOpen, 1.32

htp.formPassword, 1.36

htp.formRadio, 1.37

htp.formReset, 1.38

htp.formSelectClose, 1.39

htp.formSelectOpen, 1.39

htp.formSelectOption, 1.40

htp.formSubmit, 1.41

htp.formText, 1.42

htp.formTextarea, 1.43

htp.formTextareaClose, 1.44

htp.frame, 1.45

htp.framesetClose, 1.46

htp.framesetOpen, 1.46

htp.headClose, 1.47

htp.header, 1.48

htp.headOpen, 1.47

htp.hr, 1.54

htp.htmlClose, 1.49

htp.htmlOpen, 1.49

htp.img, 1.50

htp.img2, 1.50

htp.isindex, 1.51

htp.italic, 1.52

htp.kbd, 1.53

htp.keyboard, 1.53

htp.line, 1.54

htp.linkRel, 1.55

htp.linkRev, 1.56

htp.listHeader, 1.57

htp.listingClose, 1.58

htp.listingOpen, 1.58

htp.listItem, 1.19, 1.59

htp.mailClose, 1.61

htp.mailto, 1.60

htp.mapOpen, 1.61

htp.menulistClose, 1.62

htp.menulistOpen, 1.62

htp.meta, 1.63

htp.nl, 1.64

htp.nobr, 1.65

htp.noframesClose, 1.66

htp.noframesOpen, 1.66

htp.olistClose, 1.67

htp.olistOpen, 1.67

htp.para, 1.68

htp.paragraph, 1.68

htp.param, 1.69

htp.plaintext, 1.70

htp.preClose, 1.71

htp.preOpen, 1.71

htp.print, 1.72

htp.prints, 1.73

htp.prn, 1.72

htp.ps, 1.73

htp.s, 1.74

htp.sample, 1.75

htp.script, 1.76

htp.strike, 1.78

htp.strong, 1.79

htp.style, 1.80

htp.sub, 1.81

htp.sup, 1.82

htp.tableCaption, 1.83

htp.tableClose, 1.86

htp.tableData, 1.84

htp.tableHeader, 1.85

htp.tableOpen, 1.86

htp.tableRowClose, 1.87

htp.tableRowOpen, 1.87

htp.teletype, 1.88

htp.textareaOpen, 1.44

htp.textareaOpen2, 1.44

htp.title, 1.89

htp.ulistClose, 1.90

htp.ulistOpen, 1.90

htp.underline, 1.91

htp.variable, 1.92

htp.wbr, 1.93

I

img tag, 1.50

IP address

retrieving in the PL/SQL cartridge, 7.3

isindex, 1.51

italic tag, 1.52

J

Java applets

referencing, 1.4

K

keyboard tag, 1.53

L

line tag, 1.54

link tag, 1.55

list item tag, 1.59

list tags, 1.1

listHeader tag, 1.57

listingClose tag, 1.58

listingOpen tag, 1.58

M

mailto tag, 1.60

map tags, 1.61

menu list tag, 1.62

meta tag, 1.63

N

new line tag, 1.64

no break tag, 1.65

noframes tags, 1.66

O

ordered list tag

tags

olist, 1.67

owa_cache, 2

owa_cache.disable, 2.2

owa_cache.get_etag, 2.7

owa_cache.get_level, 2.6

owa_cache.set_not_modified, 2.5

owa_cookie.cookie data type, 3.2

owa_cookie.get function, 3.3

owa_cookie.get_all procedure, 3.4

owa_cookie.remove procedure, 3.5

owa_cookie.send procedure, 3.6

owa_cookie.vc_arr data type, 3.2

owa_image.get_x function, 4.4

owa_image.get_y function, 4.5

owa_image.NULL_POINT package variable, 4.2

owa_image.point data type, 4.3

owa_opt_lock.checksum function, 5.3

owa_opt_lock.get_rowid function, 5.4

owa_opt_lock.store_values procedure, 5.5

owa_opt_lock.vcArray data type, 5.2

owa_opt_lock.verify_values function, 5.6

owa_pattern.amatch function, 6.3

owa_pattern.change function and procedure, 6.4

owa_pattern.getpat procedure, 6.5

owa_pattern.match function, 6.6

owa_pattern.pattern data type, 6.7

owa_sec.get_client_hostname function, 7.2

owa_sec.get_client_ip function, 7.3

owa_sec.get_password function, 7.4

owa_sec.get_user_id function, 7.5

owa_sec.set_authorization procedure, 7.6

owa_sec.set_protection_realm procedure, 7.7

owa_text.add2multi procedure, 8.2

owa_text.multi_line data type, 8.3

owa_text.new_row_list, 8.4

owa_text.print_multi procedure, 8.5

owa_text.print_row_list procedure, 8.6

owa_text.row_list data type, 8.7

owa_text.stream2multi procedure, 8.8

owa_text.vc_arr data type, 8.9

owa_util.bind_variables function, 9.2

owa_util.calendarprint procedure, 9.3

owa_util.cellsprint procedure, 9.4

owa_util.choose_date procedure, 9.5

owa_util.dateType data type, 9.6

owa_util.get_cgi_env function, 9.7

owa_util.get_owa_service_path function, 9.8

owa_util.get_procedure function, 9.9

owa_util.http_header_close procedure, 9.10

owa_util.ident_arr data type, 9.11

owa_util.ip_address data type, 9.12

owa_util.listprint procedure, 9.13

owa_util.mime_header procedure, 9.14

owa_util.print_cgi_env procedure, 9.15

owa_util.redirect_url procedure, 9.16

owa_util.showpage procedure, 9.17

owa_util.showsource procedure, 9.18

owa_util.signature procedure, 9.19

owa_util.status_line procedure, 9.20

owa_util.tablePrint function, 9.21

owa_util.todate function, 9.22

owa_util.who_called_me procedure, 9.23

P

p_expires, 2.3

paragraph formatting tags (PL/SQL cartridge), 1.1

paragraph tag, 1.68

parameter tag, 1.69

plaintext tag, 1.70

PL/SQL cartridge

applet tags, 1.1

character formatting tags, 1.1

form tags, 1.1

frame tags, 1.1

list tags, 1.1

paragraph formatting tags, 1.1

subprograms summary, 1.1

table tags, 1.1

PL/SQL Web Toolkit

htf package, 1

htp package, 1

owa_cookie package, 3.1

owa_image package, 4.1

owa_opt_lock package, 5.1

owa_pattern package, 6.1

owa_sec package, 7.1

owa_text package, 8.1

owa_util package, 9.1

preformatted text tag, 1.71

print tag, 1.72

R

regular expressions, 6.2

revision tag, 1.56

S

sample tag, 1.75

script tag, 1.76

strike tag, 1.78

strings

regular expressions, 6.2

strong tag, 1.79

style tag, 1.80

subscript tag, 1.81

superscript tag, 1.82

T

table tags (PL/SQL cartridge), 1.1

tableCaption tag, 1.83

tableClose tag, 1.86

tableData tag, 1.84

tableHeader tag, 1.85

tableOpen tag, 1.86

tableRowClose tag, 1.87

tags

address, 1.2, 6.3

applet, 1.4

area, 1.5

base, 1.6

basefront, 1.7

bgsound, 1.8

big, 1.9

blockquote

closed, 1.10

open, 1.10

body, 1.11

bold, 1.12

centerclose, 1.14

centeropen, 1.14

cite, 1.15

code, 1.16

dfn, 1.18

dirlistclose, 1.19

dirlistopen, 1.19

div, 1.20

dlistDef, 1.22

dlistTerm, 1.23

emphasis, 1.26

fontClose, 1.29

fontOpen, 1.29

formClose, 1.32

formOpen, 1.32

frame, 1.45

head, 1.47

header, 1.48

htmlClose, 1.49

htmlOpen, 1.49

img, 1.50

italic, 1.52

keyboard, 1.53

line, 1.54

link, 1.55

listHeader, 1.57

listitem, 1.59

mapClose, 1.61

mapOpen, 1.61

menulistClose, 1.62

menulistOpen, 1.62

meta, 1.63

nl, 1.64

nobr, 1.65

noframes, 1.66

paragraph, 1.68

parameter, 1.69

plaintext, 1.70

pre, 1.71

print, 1.72

revision, 1.56

sample, 1.75

script, 1.76

strike, 1.78

strong, 1.79

style, 1.80

sub, 1.81

sup, 1.82

tableCaption, 1.83

tableData, 1.84

tableHeader, 1.85

teletype, 1.88

title, 1.89

underline, 1.91

unordered list, 1.90

variable, 1.92

wbr, 1.93

teletype tag, 1.88

title tag, 1.89

U

underline tag, 1.91

unordered list tag, 1.90

V

validation caching, 2.1

variable tag, 1.92

vc_arr data type, 3.2

W

wbr tag, 1.93

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