com.xenonsoft.bridgetown.app
Class WebApplicationAssemblerContextListener

java.lang.Object
  com.xenonsoft.bridgetown.app.WebApplicationAssemblerContextListener

All Implemented Interfaces:

java.util.EventListener, javax.servlet.ServletContextListener

public class WebApplicationAssemblerContextListener

extends java.lang.Object

implements javax.servlet.ServletContextListener

A servlet context listener that creates, and manages a web application assembler for a JSP application context. The listener creates a web application assembler, retrieves a configuration files for it as context relative URIs. The listener causes the assembler to load and configure itself. It then starts the assembler.

As the servlet context is destroyed, the web application assembler is retrieved, and the listener causes the assembler to dispose of it service beans in orderly fashion.

The context listener expects to read a list of assembly factory XML files from context parameter called "configuration". See the web application deployment notes in the JSP / Servlet standards. The value of the "configuration" parameter can be either comma (;) or bar (|) delimited. If the "configuration" parameter is empty or not specified, then the context listener will attempt to read from the DEFAULT_CONFIGURATON_FILE instead.

Version:

$Id: WebApplicationAssemblerContextListener.java,v 1.4 2005/02/23 01:29:20 peter_pilgrim Exp $

Author:

Peter Pilgrim, Aug 23, 2004 9:50:48 PM

See Also:

DEFAULT_CONFIGURATION_FILE, WebApplicationAssembler

Field Summary

static java.lang.String

DEFAULT_CONFIGURATION_FILE Default configuration resource URI has the value of "/WEB-INF/service-assembly.xml"

Constructor Summary

WebApplicationAssemblerContextListener()
Default constructor

Method Summary

void	contextDestroyed(javax.servlet.ServletContextEvent event) Implements / overrides contextDestroyed
void	contextInitialized(javax.servlet.ServletContextEvent event) Implements / overrides contextInitialized

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_CONFIGURATION_FILE

public static final java.lang.String DEFAULT_CONFIGURATION_FILE

Default configuration resource URI has the value of "/WEB-INF/service-assembly.xml"

See Also:

Constant Field Values

Constructor Detail

WebApplicationAssemblerContextListener

public WebApplicationAssemblerContextListener()

Default constructor

Method Detail

contextInitialized

public void contextInitialized(javax.servlet.ServletContextEvent event)

Implements / overrides contextInitialized

Specified by:

contextInitialized in interface javax.servlet.ServletContextListener

Parameters:

event - the servlet context event

See Also:

ServletContextListener.contextInitialized(javax.servlet.ServletContextEvent)

contextDestroyed

public void contextDestroyed(javax.servlet.ServletContextEvent event)

Implements / overrides contextDestroyed

Specified by:

contextDestroyed in interface javax.servlet.ServletContextListener

Parameters:

event - the servlet context event

See Also:

ServletContextListener.contextDestroyed(javax.servlet.ServletContextEvent)