org.iids.aos.util
Class JarClassLoader

java.lang.Object
  java.lang.ClassLoader
      org.iids.aos.util.JarClassLoader

public class JarClassLoader
extends java.lang.ClassLoader

ClassLoader implementation that can load classes directly from a jar file in memory, without having to write this jar file to disk. This is useful when we receive a jar file from an agent or different source, when it is not possible to use the URLClassLoader.

For now, this supports a single jar file only. So this should be suitable for agents. Multiple jar files (like library files) may be supported at a later stage.

Author:

Reinier Timmer (rjtimmer@cs.vu.nl)

Constructor Summary

JarClassLoader(byte[] bytes)
Create a new class loader, with an jar data in memory.

Method Summary

java.io.InputStream	getResourceAsStream(java.lang.String name)
protected java.lang.Class	loadClass(java.lang.String name, boolean resolve)

Methods inherited from class java.lang.ClassLoader

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

JarClassLoader

public JarClassLoader(byte[] bytes)

Create a new class loader, with an jar data in memory.

Parameters:

bytes - The JAR file as a byte array.

Method Detail

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

getResourceAsStream

public java.io.InputStream getResourceAsStream(java.lang.String name)

Overrides:

getResourceAsStream in class java.lang.ClassLoader