com.metamatrix.common.classloader
Class NonDelegatingClassLoader

java.lang.Object
  java.lang.ClassLoader
      java.security.SecureClassLoader
          java.net.URLClassLoader
              com.metamatrix.common.classloader.NonDelegatingClassLoader

Direct Known Subclasses:

URLFilteringClassLoader

public class NonDelegatingClassLoader
extends java.net.URLClassLoader

This Class circumvents the java ClassLoader delegation model. This ClassLoader will first look in it's own store of classes, and only then check it's parent ClassLoader, which is the reverse of the delegation model.

Constructor Summary

NonDelegatingClassLoader(java.net.URL[] urls)

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

NonDelegatingClassLoader(java.net.URL[] urls, java.lang.ClassLoader parent, java.net.URLStreamHandlerFactory factory)

Method Summary

java.net.URL	getResource(java.lang.String name) By overriding this method, this Class circumvents the java ClassLoader delegation model.
java.lang.Class	loadClass(java.lang.String name) By overriding this method, this Class circumvents the java ClassLoader delegation model.

Methods inherited from class java.net.URLClassLoader

addURL, definePackage, findClass, findResource, 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, getResourceAsStream, 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

NonDelegatingClassLoader

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

NonDelegatingClassLoader

public NonDelegatingClassLoader(java.net.URL[] urls,
                                java.lang.ClassLoader parent,
                                java.net.URLStreamHandlerFactory factory)

NonDelegatingClassLoader

public NonDelegatingClassLoader(java.net.URL[] urls)

Method Detail

loadClass

public java.lang.Class loadClass(java.lang.String name)
                          throws java.lang.ClassNotFoundException

By overriding this method, this Class circumvents the java ClassLoader delegation model. This ClassLoader will first look in it's own store of classes, and only then check it's parent ClassLoader, which is the reverse of the delegation model.

Overrides:

loadClass in class java.lang.ClassLoader

Parameters:

name - The name of the class to load

Returns:

Class loaded Class object

Throws:

java.lang.ClassNotFoundException

See Also:

ClassLoader.loadClass(java.lang.String)

getResource

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

By overriding this method, this Class circumvents the java ClassLoader delegation model. This ClassLoader will first look in it's own store of resources, and only then check it's parent ClassLoader, which is the reverse of the delegation model.

Overrides:

getResource in class java.lang.ClassLoader

Parameters:

name - The name of the resource to load

Returns:

URL of resource

See Also:

ClassLoader.getResource(java.lang.String)