winstone.classLoader
Class ReloadingClassLoader

java.lang.Object
  java.lang.ClassLoader
      java.security.SecureClassLoader
          java.net.URLClassLoader
              winstone.classLoader.WebappClassLoader
                  winstone.classLoader.ReloadingClassLoader

All Implemented Interfaces:

java.lang.Runnable, java.util.EventListener, ServletContextListener

public class ReloadingClassLoader
extends WebappClassLoader
implements ServletContextListener, java.lang.Runnable

This subclass of WinstoneClassLoader is the reloading version. It runs a monitoring thread in the background that checks for updates to any files in the class path.

Version:

$Id: ReloadingClassLoader.java,v 1.11 2007/02/17 01:55:12 rickknowles Exp $

Author:

Rick Knowles

Field Summary

Fields inherited from class winstone.classLoader.WebappClassLoader

system

Constructor Summary

ReloadingClassLoader(java.net.URL[] urls, java.lang.ClassLoader parent)

Method Summary

protected void	addURL(java.net.URL url)
void	contextDestroyed(ServletContextEvent sce)
void	contextInitialized(ServletContextEvent sce)
protected java.lang.Class	findClass(java.lang.String name)
java.net.URL	findResource(java.lang.String name)
void	run() The maintenance thread.

Methods inherited from class winstone.classLoader.WebappClassLoader

getResourceAsStream, loadClass

Methods inherited from class java.net.URLClassLoader

definePackage, findResources, getPermissions, getURLs, newInstance, newInstance

Methods inherited from class java.security.SecureClassLoader

defineClass, defineClass

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findLibrary, findLoadedClass, findSystemClass, getPackage, getPackages, getParent, getResource, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

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

Constructor Detail

ReloadingClassLoader

public ReloadingClassLoader(java.net.URL[] urls,
                            java.lang.ClassLoader parent)

Method Detail

addURL

protected void addURL(java.net.URL url)

Overrides:

addURL in class java.net.URLClassLoader

contextInitialized

public void contextInitialized(ServletContextEvent sce)

Specified by:

contextInitialized in interface ServletContextListener

contextDestroyed

public void contextDestroyed(ServletContextEvent sce)

Specified by:

contextDestroyed in interface ServletContextListener

run

public void run()

The maintenance thread. This makes sure that any changes in the files in the classpath trigger a classLoader self destruct and recreate.

Specified by:

run in interface java.lang.Runnable

findClass

protected java.lang.Class findClass(java.lang.String name)
                             throws java.lang.ClassNotFoundException

Overrides:

findClass in class java.net.URLClassLoader

Throws:

java.lang.ClassNotFoundException

findResource

public java.net.URL findResource(java.lang.String name)

Overrides:

findResource in class java.net.URLClassLoader