org.apache.axis.transport.http
Class AxisServletBase

java.lang.Object
  |
  +--javax.servlet.GenericServlet
        |
        +--javax.servlet.http.HttpServlet
              |
              +--org.apache.axis.transport.http.AxisServletBase

All Implemented Interfaces:

java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

Direct Known Subclasses:

AdminServlet, AxisServlet

public class AxisServletBase

extends javax.servlet.http.HttpServlet

Base class for servlets used in axis, has common methods to get and save the engine to a common location, currently the webapp's context, though some alternate persistence mechanism is always possible. Also has a load counter shared by all servlets; tracks the # of active http requests open to any of the subclasses.

Author:

Steve Loughran

See Also:

Serialized Form

Field Summary

protected static java.lang.String	ATTR_AXIS_ENGINE name of the axis engine to use in the servlet context
protected AxisServer	axisServer per-instance cache of the axis server

Constructor Summary

AxisServletBase()

Method Summary

protected static void	decLockCounter() thread safe lock counter decrement
void	destroy() Destroy method is called when the servlet is going away.
AxisServer	getEngine() get the engine for this servlet from cache or context
static AxisServer	getEngine(javax.servlet.http.HttpServlet servlet) This is a uniform method of initializing AxisServer in a servlet context.
protected static java.util.Map	getEngineEnvironment(javax.servlet.http.HttpServlet servlet) extract information from the servlet configuration files
protected java.lang.String	getHomeDir() what is the root dir of the applet?
static int	getLoadCounter() get a count of the # of services running.
protected java.lang.String	getOption(javax.servlet.ServletContext context, java.lang.String param, java.lang.String dephault) Retrieve option, in order of precedence: (Managed) System property (see discovery.ManagedProperty), servlet init param, context init param.
javax.servlet.ServletContext	getServletContext() what is the servlet context
protected java.lang.String	getWebappBase(javax.servlet.http.HttpServletRequest request) extract the base of our webapp from an inbound request
protected java.lang.String	getWebInfPath() accessor to webinf
protected static void	incLockCounter() thread safe lock counter increment
void	init() our initialize routine; subclasses should call this if they override it
boolean	isDevelopment() probe for the system being 'production'
protected void	service(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp) subclass of service method that tracks entry count; calls the parent's implementation to have the http method cracked and delegated to the doGet, doPost method.

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doGet, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service

Methods inherited from class javax.servlet.GenericServlet

getInitParameter, getInitParameterNames, getServletConfig, getServletInfo, getServletName, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

axisServer

protected AxisServer axisServer

per-instance cache of the axis server

ATTR_AXIS_ENGINE

protected static final java.lang.String ATTR_AXIS_ENGINE

name of the axis engine to use in the servlet context

See Also:

Constant Field Values

Constructor Detail

AxisServletBase

public AxisServletBase()

Method Detail

init

public void init()

our initialize routine; subclasses should call this if they override it

Overrides:

init in class javax.servlet.GenericServlet

destroy

public void destroy()

Destroy method is called when the servlet is going away. Pass this down to the AxisEngine to let it clean up... But don't create the engine if it hasn't already been created.

Specified by:

destroy in interface javax.servlet.Servlet

Overrides:

destroy in class javax.servlet.GenericServlet

getEngine

public AxisServer getEngine()
                     throws AxisFault

get the engine for this servlet from cache or context

Returns:

Throws:

AxisFault

getEngine

public static AxisServer getEngine(javax.servlet.http.HttpServlet servlet)
                            throws AxisFault

This is a uniform method of initializing AxisServer in a servlet context.

AxisFault

getEngineEnvironment

protected static java.util.Map getEngineEnvironment(javax.servlet.http.HttpServlet servlet)

extract information from the servlet configuration files

Parameters:

servlet -

Returns:

getLoadCounter

public static int getLoadCounter()

get a count of the # of services running. This is only ever an approximate number in a busy system

Returns:

The TotalServiceCount value

incLockCounter

protected static void incLockCounter()

thread safe lock counter increment

decLockCounter

protected static void decLockCounter()

thread safe lock counter decrement

service

protected void service(javax.servlet.http.HttpServletRequest req,
                       javax.servlet.http.HttpServletResponse resp)
                throws javax.servlet.ServletException,
                       java.io.IOException

subclass of service method that tracks entry count; calls the parent's implementation to have the http method cracked and delegated to the doGet, doPost method.

Overrides:

service in class javax.servlet.http.HttpServlet

Parameters:

req - request

resp - response

Throws:

javax.servlet.ServletException - something went wrong

java.io.IOException - something different went wrong

getWebappBase

protected java.lang.String getWebappBase(javax.servlet.http.HttpServletRequest request)

extract the base of our webapp from an inbound request

Parameters:

request - request containing http://foobar/axis/services/something

Returns:

some URL like http://foobar:8080/axis/

getServletContext

public javax.servlet.ServletContext getServletContext()

what is the servlet context

Specified by:

getServletContext in interface javax.servlet.ServletConfig

Overrides:

getServletContext in class javax.servlet.GenericServlet

Returns:

get the context from the servlet config

getWebInfPath

protected java.lang.String getWebInfPath()

accessor to webinf

Returns:

path to WEB-INF/ in the local filesystem

getHomeDir

protected java.lang.String getHomeDir()

what is the root dir of the applet?

Returns:

path of root dir

getOption

protected java.lang.String getOption(javax.servlet.ServletContext context,
                                     java.lang.String param,
                                     java.lang.String dephault)

Retrieve option, in order of precedence: (Managed) System property (see discovery.ManagedProperty), servlet init param, context init param. Use of system properties is discouraged in production environments, as it overrides everything else.

isDevelopment

public boolean isDevelopment()

probe for the system being 'production'

Returns:

true for a dev system.