org.java.plugin.standard
Class StandardPluginClassLoader

java.lang.Object
  java.lang.ClassLoader
      java.security.SecureClassLoader
          java.net.URLClassLoader
              org.java.plugin.PluginClassLoader
                  org.java.plugin.standard.StandardPluginClassLoader

public class StandardPluginClassLoader
extends PluginClassLoader

Standard implementation of plug-in class loader.

Version:

$Id: StandardPluginClassLoader.java,v 1.8 2007/04/07 12:39:50 ddimon Exp $

Nested Class Summary

protected static class

StandardPluginClassLoader.ResourceFilter

Constructor Summary

StandardPluginClassLoader(PluginManager aManager, PluginDescriptor descr, java.lang.ClassLoader parent)
Creates class instance configured to load classes and resources for given plug-in.

Method Summary

protected java.io.File	cacheLibrary(java.net.URL libUrl, java.lang.String libname)
protected void	checkClassVisibility(java.lang.Class<?> cls, StandardPluginClassLoader requestor)
protected void	collectFilters()
protected void	collectImports()
protected void	dispose() Should release all resources acquired by this class loader instance.
protected java.lang.String	findLibrary(java.lang.String name)
java.net.URL	findResource(java.lang.String name)
protected java.net.URL	findResource(java.lang.String name, StandardPluginClassLoader requestor, java.util.Set<java.lang.String> seenPlugins)
protected void	findResources(java.util.List<java.net.URL> result, java.lang.String name, StandardPluginClassLoader requestor, java.util.Set<java.lang.String> seenPlugins)
java.util.Enumeration<java.net.URL>	findResources(java.lang.String name)
protected boolean	isResourceVisible(java.lang.String name, java.net.URL url, StandardPluginClassLoader requestor)
protected java.lang.Class<?>	loadClass(java.lang.String name, boolean resolve)
protected void	pluginsSetChanged() Registry data change notification.
protected void	setForeignClassLoadingOptimization(boolean value)
protected void	setLocalClassLoadingOptimization(boolean value)
protected void	setProbeParentLoaderLast(boolean value)
protected void	setStickySynchronizing(boolean value)

Methods inherited from class org.java.plugin.PluginClassLoader

getPluginDescriptor, getPluginManager, toString

Methods inherited from class java.net.URLClassLoader

addURL, definePackage, findClass, 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, findLoadedClass, findSystemClass, getPackage, getPackages, getParent, getResource, 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, wait, wait, wait

Constructor Detail

StandardPluginClassLoader

public StandardPluginClassLoader(PluginManager aManager,
                                 PluginDescriptor descr,
                                 java.lang.ClassLoader parent)

Creates class instance configured to load classes and resources for given plug-in.

Parameters:

aManager - plug-in manager instance

descr - plug-in descriptor

parent - parent class loader, usually this is JPF "host" application class loader

Method Detail

collectImports

protected void collectImports()

collectFilters

protected void collectFilters()

pluginsSetChanged

protected void pluginsSetChanged()

Description copied from class: PluginClassLoader

Registry data change notification.

Specified by:

pluginsSetChanged in class PluginClassLoader

See Also:

PluginClassLoader.pluginsSetChanged()

dispose

protected void dispose()

Description copied from class: PluginClassLoader

Should release all resources acquired by this class loader instance.

Specified by:

dispose in class PluginClassLoader

See Also:

PluginClassLoader.dispose()

setProbeParentLoaderLast

protected void setProbeParentLoaderLast(boolean value)

setStickySynchronizing

protected void setStickySynchronizing(boolean value)

setLocalClassLoadingOptimization

protected void setLocalClassLoadingOptimization(boolean value)

setForeignClassLoadingOptimization

protected void setForeignClassLoadingOptimization(boolean value)

loadClass

protected java.lang.Class<?> loadClass(java.lang.String name,
                                       boolean resolve)
                                throws java.lang.ClassNotFoundException

Overrides:

loadClass in class java.lang.ClassLoader

Throws:

java.lang.ClassNotFoundException

See Also:

ClassLoader.loadClass(java.lang.String, boolean)

checkClassVisibility

protected void checkClassVisibility(java.lang.Class<?> cls,
                                    StandardPluginClassLoader requestor)
                             throws java.lang.ClassNotFoundException

Throws:

java.lang.ClassNotFoundException

findLibrary

protected java.lang.String findLibrary(java.lang.String name)

Overrides:

findLibrary in class java.lang.ClassLoader

See Also:

ClassLoader.findLibrary(java.lang.String)

cacheLibrary

protected java.io.File cacheLibrary(java.net.URL libUrl,
                                    java.lang.String libname)

findResource

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

Overrides:

findResource in class java.net.URLClassLoader

See Also:

ClassLoader.findResource(java.lang.String)

findResources

public java.util.Enumeration<java.net.URL> findResources(java.lang.String name)
                                                  throws java.io.IOException

Overrides:

findResources in class java.net.URLClassLoader

Throws:

java.io.IOException

See Also:

ClassLoader.findResources(java.lang.String)

findResource

protected java.net.URL findResource(java.lang.String name,
                                    StandardPluginClassLoader requestor,
                                    java.util.Set<java.lang.String> seenPlugins)

findResources

protected void findResources(java.util.List<java.net.URL> result,
                             java.lang.String name,
                             StandardPluginClassLoader requestor,
                             java.util.Set<java.lang.String> seenPlugins)
                      throws java.io.IOException

Throws:

java.io.IOException

isResourceVisible

protected boolean isResourceVisible(java.lang.String name,
                                    java.net.URL url,
                                    StandardPluginClassLoader requestor)