com.adventnet.adaptors.clients
Class JarLoader

java.lang.Object
  java.lang.ClassLoader
      com.adventnet.adaptors.clients.JarLoader

public class JarLoader
extends java.lang.ClassLoader

A simple class loader capable of loading from local jar files.

Field Summary

protected java.util.Vector	classpath
protected java.util.Hashtable	mClassData

Constructor Summary

JarLoader(java.lang.String jarfile)
This constructor is used to load Jar Files.

JarLoader(java.util.Vector jarfiles)
This constructor loads the jarfiles present in the vector that is passed as argument.

Method Summary

void	addClass(java.io.InputStream isr, java.lang.String className)
void	addJar(java.lang.String jarfile) Adds the specified jar to this classloader.
void	dispose() Attempts to clean up the memory consumed by this classloader.
java.net.URL	findResource(java.lang.String name)
java.util.Enumeration	findResources(java.lang.String name)
protected java.lang.String	formatClassName(java.lang.String class_name)
protected byte[]	getBytes(java.lang.String entry_name)
java.io.InputStream	getResourceAsStream(java.lang.String name)
java.lang.Class	loadClass(java.lang.String className) This is a simple version since callers typically want the class resolved before it is returned to them.
java.lang.Class	loadClass(java.lang.String class_name, boolean resolve)
protected byte[]	loadClassBytes(java.lang.String class_name)
void	loadJar(java.lang.String jarFile, java.lang.String className) Method to load a particular entry from the jar file.

Methods inherited from class java.lang.ClassLoader

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

Methods inherited from class java.lang.Object

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

Field Detail

mClassData

protected java.util.Hashtable mClassData

classpath

protected java.util.Vector classpath

Constructor Detail

JarLoader

public JarLoader(java.lang.String jarfile)

This constructor is used to load Jar Files. If the jarFile passed is a directory, it will load all the jars in that directory.

Parameters:

jarfile - The Jar File Name or the Directory which contains the Jars to be loaded.

JarLoader

public JarLoader(java.util.Vector jarfiles)

This constructor loads the jarfiles present in the vector that is passed as argument.

Parameters:

jarfiles - The vector of jar files to be loaded.

Method Detail

addJar

public void addJar(java.lang.String jarfile)

Adds the specified jar to this classloader.

Parameters:

jarfile - The Path String of the Jar File to be added.

loadClass

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

This is a simple version since callers typically want the class resolved before it is returned to them.

Overrides:

loadClass in class java.lang.ClassLoader

Throws:

java.lang.ClassNotFoundException

loadClass

public java.lang.Class loadClass(java.lang.String class_name,
                                 boolean resolve)
                          throws java.lang.ClassNotFoundException

Overrides:

loadClass in class java.lang.ClassLoader

Throws:

java.lang.ClassNotFoundException

loadJar

public void loadJar(java.lang.String jarFile,
                    java.lang.String className)
             throws java.io.IOException,
                    java.io.FileNotFoundException

Method to load a particular entry from the jar file.

Parameters:

jarFile - The Input Jar File

className - The name of the class. For example java.lang.String

Throws:

java.io.IOException - If any IOException occurs while reading the Jar.

java.io.FileNotFoundException - If the jar file is not present

addClass

public void addClass(java.io.InputStream isr,
                     java.lang.String className)
              throws java.io.IOException

Throws:

java.io.IOException

loadClassBytes

protected byte[] loadClassBytes(java.lang.String class_name)

getBytes

protected byte[] getBytes(java.lang.String entry_name)

formatClassName

protected java.lang.String formatClassName(java.lang.String class_name)

getResourceAsStream

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

Overrides:

getResourceAsStream in class java.lang.ClassLoader

findResources

public java.util.Enumeration findResources(java.lang.String name)
                                    throws java.io.IOException

Overrides:

findResources in class java.lang.ClassLoader

Throws:

java.io.IOException

findResource

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

Overrides:

findResource in class java.lang.ClassLoader

dispose

public void dispose()

Attempts to clean up the memory consumed by this classloader.