net.sf.fikin.classmarshaling.util
Class HidingClassLoader

java.lang.Object
  java.lang.ClassLoader
      net.sf.fikin.classmarshaling.util.HidingClassLoader

public class HidingClassLoader
extends java.lang.ClassLoader

Class loader "hiding" any class part of given list of hierarchies.

This is useful in cases when it is required an "artificial" environment where given classes are assumed not to be present.

I use it in testing and initial implementation stages of my applications. created on Aug 5, 2005

Since:

Version:

$Revision: 1.1 $

Author:

fiykov

Constructor Summary

HidingClassLoader(java.lang.ClassLoader parent)
construct hiding classloader with given parent

HidingClassLoader(java.lang.ClassLoader parent, java.util.Collection prefixes)
construct hiding classloader with given parent and list of prefixes

HidingClassLoader(java.lang.ClassLoader parent, java.lang.String[] prefixes)
construct hiding classloader with given parent and list of prefixes

Method Summary

protected java.lang.Class	loadClass(java.lang.String name, boolean resolve) class lookup call.
void	setPrefixes(java.util.Collection prefixes) assign list of class hierarchies which are to be hided by this classloader
void	setPrefixes(java.lang.String[] prefixes) assign list of class hierarchies which are to be hided by this classloader

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findResources, 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, toString, wait, wait, wait

Constructor Detail

HidingClassLoader

public HidingClassLoader(java.lang.ClassLoader parent)

construct hiding classloader with given parent

Parameters:

parent - classloader

HidingClassLoader

public HidingClassLoader(java.lang.ClassLoader parent,
                         java.util.Collection prefixes)

construct hiding classloader with given parent and list of prefixes

Parameters:

parent - classloader

prefixes - of classes to hide

HidingClassLoader

public HidingClassLoader(java.lang.ClassLoader parent,
                         java.lang.String[] prefixes)

construct hiding classloader with given parent and list of prefixes

Parameters:

parent - classloader

prefixes - of classes to hide

Method Detail

setPrefixes

public void setPrefixes(java.util.Collection prefixes)

assign list of class hierarchies which are to be hided by this classloader

Parameters:

prefixes -

setPrefixes

public void setPrefixes(java.lang.String[] prefixes)

assign list of class hierarchies which are to be hided by this classloader

Parameters:

prefixes -

loadClass

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

class lookup call.

if asked class is part of one the specified prefix hierarchies it will throw ClassNotFoundException exception.

All other classes are propagated to its parent classloader.

Overrides:

loadClass in class java.lang.ClassLoader

Parameters:

name - of the class to check

resolve - the class

Returns:

the actual Class object

Throws:

java.lang.ClassNotFoundException