com.haulmont.cuba.web.sys.singleapp

Class SingleAppWebServletListener

java.lang.Object

com.haulmont.cuba.web.sys.singleapp.SingleAppWebServletListener

All Implemented Interfaces:

java.util.EventListener, javax.servlet.ServletContextListener

public class SingleAppWebServletListener
extends java.lang.Object
implements javax.servlet.ServletContextListener

This class and its twin com.haulmont.cuba.core.sys.singleapp.SingleAppCoreServletListener separate "web" and "core" classes to different classloaders when we pack application to single WAR.

We create 2 URLClassLoaders (1 for core and 1 for web), with predefined (during single WAR build) list of jars (web.dependencies). So the classloaders load classes from the jars and only if class is not found they delegate loading to base WebAppClassLoader (their parent).

As a result, core classloader contains core classes, web classloader contains web classes and WebAppClassLoader contains "shared" classes.

To make sure the Spring context uses the specific classloader we load AppWebContextLoader reflectively, create new instance and call its initialization methods reflectively as well.

Constructor Summary

Constructors

Constructor and Description
SingleAppWebServletListener()

Method Summary

Modifier and Type	Method and Description
void	contextDestroyed(javax.servlet.ServletContextEvent sce)
void	contextInitialized(javax.servlet.ServletContextEvent sce)

Methods inherited from class java.lang.Object

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

Constructor Detail

SingleAppWebServletListener

public SingleAppWebServletListener()

Method Detail

contextInitialized

public void contextInitialized(javax.servlet.ServletContextEvent sce)

Specified by:

contextInitialized in interface javax.servlet.ServletContextListener

contextDestroyed

public void contextDestroyed(javax.servlet.ServletContextEvent sce)

Specified by:

contextDestroyed in interface javax.servlet.ServletContextListener