31 Dec 2002 - Review of "Struts Kick Start" now on Slashdot
Let the mindless sniping and anti-microsoft tirades begin!
http://books.slashdot.org/books/02/12/27/1559200.shtml?tid=108
31 Dec 2002 - Struts 1.1 Beta 3 Released
The Struts team is proud to announce the release of Struts 1.1 Beta 3. This
release includes significant new functionality, while retaining full
backwards compatibility with earlier versions of Struts. It also
incorporates fixes for a number of bugs which were reported against earlier
versions.
The binary distribution is available at:
http://www.apache.org/dist/jakarta/struts/binaries/
and the source distribution is available at:
http://www.apache.org/dist/jakarta/struts/source/
In addition, the library distribution, which contains updated binaries
without the sample applications, is available at:
http://www.apache.org/dist/jakarta/struts/library/
Details of the changes in this release are available in the Release Notes,
which can be found here:
http://jakarta.apache.org/struts/userGuide/release-notes-1.1-b3.html
27 Dec 2002 - Java Development with Ant
I'm proud (and worried about the support e-mails! :) to announce the near-final release of a project
demonstrating Ant, XDoclet, Struts, JUnit, Cactus, and Lucene.
Its called JavaDevWithAnt as it was written for the book Steve and I co-authored and has been refined
during several presentations I've been giving on Ant, XDoclet and Struts.
The documentation is in draft stage, and my primary goal is to collect feedback on polishing the documentation
(and the application if there are any bugs that surface).
The site where I'm hosting the distribution and documentation is:
http://www.ehatchersolutions.com/JavaDevWithAnt/
Please let me know if you try it out and have suggestions for improvement,
or just to let me know you tried it and hate it or love it, etc.
Feedback more than welcome!
Direct feedback to me at
JavaDevWithAnt@ehatchersolutions.com
p.s. Since this is directed to the Struts lists, here are some hilights:
-
- XDoclet generation of struts-config.xml and validation.xml
-
- Custom XDoclet generation of starter JSP and application properties based on form bean source code
-
- My proudest taglib, LabelTag - shows fields in error and marks required fields with an asterisk.
-
- Use of StrutsTestCase in Cactus mode to test a Struts Action.
29 Dec 2002 - BasicPortal 0.7k available on SourceForge
The BasicPortal Project has released version 0.7k. BasicPortal is a Struts
based application that can help your developers get a head start on their
Portal development. Setup the database and deploy the .war and you are
ready to go!
Version 0.7k contains:
-
- ability to add content to comments
-
- contact manager module
-
- task manager module
-
- email module
-
- custom DAO
-
- secure modules
The BasicPortal application can be customized for use in your company.
Any questions on BasicPortal should be directed to the MVC Progammers
list -- mvc-programmers@basebeans.com.
12 December 2002 - Struts book #1 and #2
Struts Kick Start
by James Turner and Kevin Bedell is now available from Amazon for immediate delivery:
Buy one, buy two. They make great stocking stuffers. Use them as door
stops. Learn to use the enclosed CD as a lethal thrown weapon. Fun for
the whole family.
12 December 2002 - Struts book #1 and #2
Struts books top the #1 and #2 slots on Amazon's Java Programming bestseller list!
3 December 2002 - Struts book rated 11 out of 10
(3 December 2002)
Struts in Action rated 11 out of 10 by Slashdot.
27 Nov 2002 - Expresso 5.0.2 Released
Expresso 5.0.2 can be downloaded freely from:
http://www.jcorporate.com/product/expresso.html
Both Expresso source and binaries are available.
This minor release is primarily a bug fix release. Bug Fixes include a
NPE fix in JDBC Executor, a Blob Field fix, Validation improvements, and
ComponentManager link fixes.
New Features (not affecting existing code) include a proper Struts-based
ExLink tag by Malcolm Wise.
24 Nov 2002 - O'Reilly Struts Book Now Available
Programming Jakarta Struts by Chuck Cavaness (ISBN: 0596003285) is now available and shipping.
17 Nov 2002 - Struts At ApacheCon 2002
If you're coming to Las Vegas this week for ApacheCon, there will be two
sessions and a Birds of Feather meet specifically focused on Struts:
-
Session TU07 (Tuesday, 1:30-2:30) - What's New In Struts 1.1
-
Session WE06 (Wednesday, 10:00-11:00) - Building Web Applications
With Struts
-
BOF BOF03 (Tuesday, 8:00p-9:00p) - Struts After 1.1 -- Where Do We
Go From Here?
The BOF is primarily an opportunity to gather input from folks on our
initial thinking about the 1.2 and 2.0 roadmaps, and to answer any general
questions that people have.
The sessions and BOF will be lead by Craig McClanahan. Craig looks forward
to meeting any Struts users (and developers) attending the
conference. You can find him at one of these sessions, or hanging around
the Sun booths in the Exhibit Hall.
15 Nov 2002 - Struts ImageButtonBeanManager v0.2d
Version 0.2d of the ImageButtonBeanManager is now available on
SourceForge.net.
ImageButtonBeanManager is a Struts Extension Package that supports the Struts
HTML Image Tag and the ImageButtonBean class in a manner that is analgous to
the support provided by Struts for the Struts HTML Submit Tag.
It extends Ted Husted's
ImageButtonBean
approach with a few new features, such as automatically mapping the selected
ImageButton to an ActionForward and eliminating the need to define ImageButtonBean
instances in the ActionForm.
It builds on this capability and adds some features for similar support of the
SubmitButton, yielding several new DispatchAction classes. The DispatchAction
classes can be used to develop "Action Flows", which are analgous to
server-side Action scripts. "Action Flows" are discussed in detail in the
documentation (please see the
"DispatchAction Classes page".)
The ImageButtonBeanManager DispatchAction classes are "ready-to-use" in that
they don't need to be extended or require any application-specific code. They
can be used in lieu of an application's extensions of the Struts DispatchAction
or LookupDispatchAction classes. They have the potential for relieving much of
the dispatching duties of application-specific Actions. That should bring the
side benefit of reducing the level of coupling between JSPs and Actions.
Larger development projects might get more benefit from this than smaller ones
...
The developer documentation, JavaDoc, Java code and a sample WebApp are running
at:
http://imagebuttonbeanmgr.webhop.org/
15 Nov 2002 - [FRIDAY] Top 10 things likely to be overheard from a Klingon Programmer
From: Andrew Hill
10. Specifications are for the weak and timid!
9. You question the worthiness of my code? I should kill you where you
stand!
8. Indentation?! - I will show you how to indent when I indent your skull!
7. What is this talk of 'release'? Klingons do not make software 'releases'.
Our software 'escapes' leaving a bloody trail of designers and quality
assurance people in its wake.
6. Klingon function calls do not have 'parameters' - they have 'arguments' -
and they ALWAYS WIN THEM.
5. Debugging? Klingons do not debug. Our software does not coddle the weak.
4. A TRUE Klingon Warrior does not comment on his code!
Klingon software does NOT have BUGS. It has FEATURES, and those features are
too sophisticated for a Romulan pig like you to understand.
3. You cannot truly appreciate Dilbert unless you've read it in the original
Klingon.
2. Our users will know fear and cower before our software!
1. Ship it! Ship it and let them flee like the dogs they are!
13 Nov 2002 - Easy Struts 0.6.1 Eclipse plugin
Easy Struts 0.6.1 was just released, all the wizard was refactored, a Struts view was
added and Struts 1.1 modules are supported.
Easy Struts Features:
-
Easy Struts plugin can be used with most popular J2EE plugin like
Sysdeo TomcatResin, Lomboz... (or simply a Java project).
-
Provide Struts configuration editor for Struts 1.0 and Struts 1.1 files.
-
Now use XSLT generation.
-
Provide a global tree view of any Java project with Easy Struts support.
-
Full support for Struts 1.1 modules (with 1 last nightly build).
-
Tool tips extracted from Struts DTD.
-
Input helper (chooser dialog and validation).
-
Compatible with IBM WSAD 5
Install it from update manager:
http://easystruts.sourceforge.net/update.html
or
Download it:
http://easystruts.sourceforge.net
13 Nov 2002 - Tiles and Validator Support in ObjectAssembler 2.5
ObjectAssembler 2.5 Pro is now available:
http://www.objectventure.com/objectassembler.html
New Struts features in this release:
-
Full support for Tiles definitions
-
Full support for Validator 1.0 configurations
-
Jump from any element in our visual editor to its associated XML
-
Two-way development. Changes made to XML are immediately reflected in
the visual editor and vice versa
-
Two additional component types: Struts Exception and Validator
(allows the implementation of Validator rules). For each of these
components that are created, their use is automated in the Struts,
Tiles, and Validator configuration editor
-
Updated all Struts support to the latest 1.1 builds.
ObjectAssembler doesn't just help you generate configuration files. It
is a component-based Struts development environment that assists you in
building both Struts components and configuration files. It also
automates the process of packaging them in a WAR and generating the WAR
itself.
ObjectAssembler is currently supported in Jbuilder, Netbeans, Sun ONE
Studio, and as a standalone IDE. We are working on the next supported
IDE (the most popular requests being IDEA and Eclipse).
I invite you to take ObjectAssembler for a spin. The User Manual, which
is provided with the installation, explains how to make use of
ObjectAssembler's Struts support. We also have some simple Struts
Viewlets available here if you aren't quite up to downloading yet:
http://www.objectventure.com/demos.html. If you have any
questions/problems/feedback, please contact me directly or join me here:
http://support.objectventure.net.
09 Nov 2002 - Management-oriented Powerpoint Presentation for Struts
James Turner and Kevin Bedell have collaborated on a Management Powerpoint
presentation that can be used to make the case for using Struts for
development.
http://www.strutskickstart.com
08 Nov 2002 - 2 Part Series on Onjava.com
Part I of a two part series on Struts v1.1 is posted on Onjava.com at
http://www.onjava.com/pub/a/onjava/pub/a/2002/11/06/struts1.html
Part II will be posted next week.
'The Struts Framework: A Practical Guide for Java Programmers' (MK) is now
shipping. Order your copy now from the featured online store:
http://www.softpro.com/1-55860-862-1.html
07 Nov 2002 - Struts in Action now in print
The Manning book, Struts in Action, is now available for sale at the publisher's website and will arrive at bookstores everywhere over the next few weeks.
Struts solves the most common problems of Web development by providing an open source framework for building Web applications.
As the only book with full coverage of both Struts 1.0 and the upcoming Struts 1.1, Struts in Action points out the differences between the two and builds a case study that illustrates the transition from one to the other.
The authors of the Manning book are core members of the Struts community who are intimately involved in the Struts development process.
Manning makes this text available in either ebook edition for $22.47 or print edition for $44.95 at www.manning.com/husted.
If you order the ebook from Manning's website first, you will receive a special offer on the print edition.
If you later purchase the print edition from the publisher's website, Manning will deduct the cost of the ebook from the print edition order - that's both editions for $44.95!
Please remember, to get this deal, you must order the ebook first.
Struts in Action
By Ted N. Husted, Cedric Dumoulin, George Franciscus, David Winterfeldt
ISBN 1930110502
Softbound, 664 pages, $44.95
Ebook, 2.5 Mb PDF, $22.47
www.manning.com/husted
06 Nov 2002 - Struts News Roundup
The
Struts team is proud to welcome 4 new Committers this month, David Karr, Eddie Bush, David Graham, and James Mitchell
Everyone is working steadily toward the release of Struts 1.1 beta 3. To help keep everyone on track, the team added a
Development Roadmap.
There are a number of "nice to haves" that won't make Struts 1.1 which are now slated for Struts 1.2. Farther down the road, Struts 2.0 will rely upon the new standards, like JavaServer Faces and JSTL.
The platform for Struts 1.1 will remain Servlet 2.2 and JSP 1.1. However, a Struts JSTL taglib is available in the nightly build contrib directory and will be released with Struts 1.1 as a separate download.
Solid Struts support for the other new standard,
Struts JavaServer Faces,
is under development, but cannot be released quite yet.
Meanwhile, the Struts User list will continue to enjoy its "casual Friday" policy. Off-topic messages are tolerated on Fridays so long as the message is prefixed with the token [FRIDAY]. Posting [FRIDAY] articles on any other weekday is strongly discouraged.
2002 Nov 05 - Struts Article on theServerSide.com
An article on Struts has been published on www.theServerSide.com. This
article titled 'Fast Track to Struts: What it Does and How' is primarily
written to assist new users get quickly familiar with Struts. It is
complementary to the information already available at
http://jakarta.apache.org/struts/userGuide/index.html. I am hoping that this
article will complement the efforts of the people already evangelizing
Struts adoption.
The introduction to the article is reproduced below.
Introduction
------------
The objective of this article is to introduce prospective Struts users to
the key benefits of using Struts, and at the same time illustrate its
configuration and usage semantics. We will define the requirements of a
robust presentation framework and simultaneously discuss how these
requirements are implemented in the Struts framework. We will also explore
the design patterns implemented by Struts, the semantics of the controller,
and the semantics of the associated helper components; this knowledge will
be useful when designing components that will interact with the framework,
and when there is a need for extending the framework for accommodating
special needs of a project. This article complements the information
available at http://jakarta.apache.org/struts.
For more visit
http://www2.theserverside.com/home/thread.jsp?thread_id=16336
2002 Nov 05 - Struts Workflow Extension Package 0.9.2
The Bugfix-Version 0.9.2 of the Struts Workflow
Extension Package is now available.
The release received the following changes:
-
fix for a bug that caused an exception in GenericAction in very
special configuration situations
-
bugfix in the test application's web.xml file, some containers
stumbled over
For more information about this package visit
http://www.livinglogic.de/Struts/.
2002 Nov 01 - New Struts Article posted on OnJava
Sorry for the self promotion, but I thought this article
might help some on this list. I wrote a Struts "lessons
learned" article for O'Reilly that contains information
that is discussed here on the list frequently, but never
hurts to be explained in more detail.
Here's the link to the article:
http://www.onjava.com/pub/a/onjava/2002/10/30/jakarta.html
Enjoy,
2002 Oct 30 - Struts Console version 3.0 is now available
http://www.jamesholmes.com/struts/
Download Now:
http://www.jamesholmes.com/struts/struts-console-3.0.zip
-- OR --
http://www.jamesholmes.com/struts/struts-console-3.0.tar.gz
Struts Console is FREE software.
Eclipse plugin support and Validator config file
support is finally here. This release also makes
working with DynaActionForms more convenient.
Changes with Struts Console v3.0
-
Fixed bug where Forwards' "Configuration Class"
attribute was incorrect.
-
Added support for Validator config files.
-
Added plugin support for Eclipse.
-
Added support for "className" attribute of
<data-source> elements.
-
Added support for "className" attribute of
<exception> elements.
-
Added support for "className" attribute of
<form-bean> elements.
-
Added support for "className" attribute of
<form-property> elements.
-
Added support for adding <set-property> elements
to <form-property> elements.
-
Added drop down list of values for "Type" field
of Form Properties for FormBeans.
-
Added drop down list of values for
FormBean's "Type" field.
2002 Oct 16 - Architectural framework Brings Next Level of Best Practices, Interoperability, Re-use and Configurability to J2EE Web Development With Release 5.0.
Jcorporate Ltd. today announces the release of Expresso 5.0, the most popular architectural framework for Java web development.
The Expresso 5.0 release is a major new release with more than 50 new features, breaks new ground in software with new workflow engine and raises the bar by providing 100% higher release stability than the previous version.
The Release 5.0 release has brewed more than 50 new features, as well as many feature updates, performance improvements, bug fixes and updated documentation. Here are some highlights:
1. Additional Struts Integration including Tiles integration, ActionForms, Radio Input types, Combobox tag, and an Expresso-aware html:link tag that will work with Transitions.
2. Container-based authentication integration.
3. Authentication and Registration: refactored with many improvements including email address validation, login redirecting to original destination.
4. SSL Integration Capabilities: now can transition into and out of SSL web pages and still maintain session state.
5. DBObjects: Has many new improvements including a new class of DBObjects that can have Row level permissions.
6. Basic Workflow Capabilities
7. BLOB/CLOB datatypes Support
8. JNDI Compatible Data Connections: Expresso can now retrieve connections to databases through JNDI lookups. This is critical for JTA compatibility as well as some drivers for, for example, DB-2 databases.
9. i18n Improvements: Error Collections can have keys to Message Bundles with this tag. Polish and Chinese language support added.
10. Clean & universal URLs: allows for clean URLS without lots of URL parameters
11. Performance improvements to overall web application performance.
12. Security Enhancements have been made.
13. Expresso Developer's Guide has been substantially updated.
14. and much more.
Expresso is available free of charge for download at http://www.jcorporate.com/product/expresso.html.
2002 Oct 9 - StrutsCX: Struts with Castor XML and XSLT
StrutsCX is a small Struts add-on framework that combines Struts with Castor XML and XSLT.
Features:
-
Lightweight framework running on any Servlet Engine or J2EE Application Server.Simple and fast to implement.
-
Support of internationalization. IS0-8859-1 and any other language, like Chinese, Korean, Arabic, too!
-
StrutsCXServlet: Replaces Struts JSP and MessageResources features with a pure XML and XSLT solution 100% internationalizable.
-
Output of 100% standard conform XML, XHTML, XSL-FO, WML or whatever you like.
-
Simple validation error mechanism.
-
Prototype persists via Castor XML.
-
Prototype featuring the CRUD cycle (Create, Retrieve, Update, Delete) and support for English, German and Korean language.
StrutsCX takes further the idea of the Model 2X by Julien Mercay and Gilbert Bouzeid. Check out the StrutsCX website:
http://it.cappuccinonet.com/strutscx
02 Oct 2002 - Struts-EL contrib library (Struts & JSTL)
The Struts-EL contrib library is now available in the nightly build, as of build 20021002.
The Struts-EL tag library is an extension of the Struts tag library (at
least
the "bean", "html", and "logic" portions). Each JSP custom tag in this
library is a subclass of an associated tag in the Struts tag library. The
basic difference is that this tag library does not use "rtexprvalues", it
uses
the expression evaluation engine in the JSP Standard Tag Library (version
1.0)
to evaluate attribute values.
All of the tags in this library are "ported" from the Struts tag library,
with
the same attributes (except for one each added to "logic:match" and
"logic:notMatch") and functionality. However, some of the Struts tags were
not
ported to this library. This is the case for several tags whose
functionality
is completely covered by the JSTL tag library ("bean:write", for instance,
being covered by "c:out" in the JSTL).
In order to fully understand the correct utilization of this library, you
must
understand the use and operation of the Struts tag library, and the use and
operation of the JavaServer Pages Standard Tag Library (hereafter called the
"JSTL"), along with the expression language (sometimes called the "EL") used
for evaluating attribute values. At this point in time, there is only very
little documentation for the Struts-EL library. There is a "README.txt"
file
at the root of the distribution which provides some basic information. At
some
future time, the documentation for Struts-EL may be generated just like the
Struts documentation. However, as this library is really just a pure
combination of the Struts tag library with the JSTL EL engine, there isn't a
great deal more additional information that would be useful.
Note that the use of JSTL 1.0 requires the use of a JSP 1.2-compliant web
container. As a result, Struts-EL also requires a JSP 1.2-compliant web
container.
The Struts-EL distribution is provided as part of the Struts distribution,
as a
"contrib" library. Just like the normal Struts distribution, there is a
"strutsel-exercise-taglib" web application, which is a simple application
used
for demonstrating many of the tags and their features. This version of the
application covers a few more tags than the example in the base library, and
also provides a "Source" feature, to view the source online.
If you want a quick example of what you can do with Struts-EL, imagine what
you
normally have to do if you're using LabelValueBean in your Action code to
populate a symbolic value and a message resource key, and displaying that
resulting string in your JSP page.
You would normally have a pair of lines like this in your JSP page
(hopefully
I've got my syntax correct, as I'm entering this cold):
<bean:define id="foo" name="labelValueBean" property="label"/>
<bean:message key='<%= foo.toString() %>'/>
Using Struts-EL, it would look like this:
<bean-el:message key="${labelValueBean.label}"/>
2002 Sep 10 - ApplicationResources.properties from Database
For anyone interested, I have finished implementing DBMessageResources
which allows you to keep the key-value pairs (from your
ApplicationResources.properties) in a single database table.
You can load your property files into a table (generic schema is provided)
and with this extension, by only modifying <message-resources> in the
struts-config.xml your application will run WITHOUT ANY code changes. (See
the readme.txt file included)
This extension uses OJB (http://jakarta.apache.org/ojb) O/R mapping for
database configuration and connection pool management.
I have included a modified version of the (1.1b2) struts-example to
demonstrate.
I have tested this with Struts 1.1b2, and I'm sure it will work with 1.1b1
(If anyone requires a 1.0.x compatible, I can look at that also)
I will get this project available as soon as I work through some cvs issues
on sf.net:
If anyone is REALLY itching to get their hands on it sooner, send me a
email.
For those who were waiting, thanks for your patience.
2002 Sep 08 - French book
A new book about UML named "Mod?liser un site e-commerce en UML" from Pascal Roques will be available mid September.
Summary: http://www.dotnetguru.org/downloads/tabledesmatieres.pdf
Implementation code is provided with Struts, .Net and PHP
Struts Q&A Distilled, Vol#2
"Struts Q&A Distilled" is a catalogue of question-and-answers distilled
from Struts mailing lists and other sources. The catalogue is organized in
topics. New entries are added to the catalogue periodically in batches.
Volume #2:
http://www.scioworks.net/servlets/ShowPage?pid=34&dp=3
Covers:
Q1: It is recommended properties of the FormBeans should be String
properties. In that case, where do I do the type conversions?
Q2: How much does Struts depend on the session object and when is the
object created?
Q3: I have problem with using ActionErrors and <html:errors>. I don't see
my messages. Why?
Q4: My error messages generated by <html:errors> contain "null" at the
start and the end. What have I done wrong?
Q5: How do I prevent my form from being validated when it is displayed the
first time, if the JSP is fronted by an Action?
Q6: Struts 1.1 seems to support multiple resource bundles. How to use it?
Q7: After I replace my <input type="submit"...> to <html:submit...>, my
Javascript document.forms[0].submit() does not work anymore and returns me
"Object doesn't support this property or method". Why?
Q8: How do I configure Struts to intercept requests and perform some logic
before passing them to the controller servlet for processing?
Q9: How do I send binary data to the controller servlet? (e.g. a
Swing-based client sends serialized object to the controller servlet.)
Q10: I want to associate data with <html:check> and return the selected
value as a String property in the FormBean. But I got exception coming from
RequestUtils.populate(). Why?
2002 Sep 05 - Struts 1.1: Should I Upgrade?
Built on the success of Struts 1.0, Struts 1.1 beta was released in March
this year and showcased at JavaOne 2002. This article describes the new
features found in Apache Struts 1.1 beta and the impact of migration from
Struts 1.0 to Struts 1.1. It also offers advice on the migration decision
and the upgrade process.
Read the article by John Yu
http://lists.theserverside.com/t/12337/870556/204/181/
at the ServerSide.
Map -> JavaBean API, arbitrary property names! dynclass.sourceforge.net
http://dynclass.sourceforge.net/ - a Class-creation API with very simple but powerful Map-to-JavaBeans translation.
I have recently added support for arbitrary property names (i.e. names
that contain spaces, operator chars, you name it). So for example:
Map myMap = ...;
myMap.put("email address", emailAddr);
Object myBean = BeanCreator.createBeanFromMap(myMap);
//...
<bean:write name='myBean' property='email address'/>
Much better than lots of Bean inner-classes!
I know a lot of Struts developers are using DynaBean et al and it seems to be working fine for
them. If you need your beans to work within non-DynaBean-aware
frameworks this API would be a big help to you.
2002 Sep 02 - JDeveloper9i 9.0.3 w/ Struts, J2EE 1.3, et. al.
A quick announcement for any Struts users who might be using
(or might want to evaluate) Oracle's JDeveloper Java IDE.
We've just published a Developer's Preview of our new 9.0.3 major release
on our Oracle Technet website:
http://otn.oracle.com/products/jdev/content.html
List of new features in this release is at:
http://otn.oracle.com/products/jdev/htdocs/jdev903Preview_fo.html
Of particular interest to Struts developers are the following new features:
-
Easily work with struts-config.xml settings
-
Quickly create new actions and action forms
-
Run/debug Struts apps in the embedded J2EE 1.3-compliant
container for fast, no-deploy code/test/debug turnaround time
-
Easily use Oracle's J2EE framework, Business Components for Java (BC4J),
as the Model layer for your Struts application
-
Auto-generate a fully-working Struts/JSP/BC4J database
application using the new "Complete Struts-Based JSP App" wizard
Plus many other features of general interest to anyone doing Java/J2EE
development. Software is free to download and use, and $995 for a full
commercial license (which includes free use of the BC4J J2EE Framework).
For a quick overview of how the BC4J framework implements all of
the J2EE design patterns you normally have to write by hand, see:
http://otn.oracle.com/products/jdev/htdocs/j2ee_bc4j.html
and an overview of how the framework implements collections of
Value Objects for you easily, see:
http://otn.oracle.com/products/jdev/howtos/bc4j/bc4j-collections.html
Have fun.
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