org.ow2.carol.cmi.smart.client
Class SmartClassLoader

java.lang.Object
  java.lang.ClassLoader
      java.security.SecureClassLoader
          java.net.URLClassLoader
              org.ow2.carol.cmi.smart.client.SmartClassLoader

public class SmartClassLoader
extends java.net.URLClassLoader

ClassLoader that is used and that asks the remote server.

Author:

The new CMI team, Florent Benoit

Constructor Summary

SmartClassLoader(java.lang.String host, int port)
Creates a new classloader.

Method Summary

protected java.lang.Class<?>	findClass(java.lang.String name) Finds and loads the class with the specified name from the URL search path. If the super classloader doesn't find the class, it ask the remote server to download the class
java.net.URL	findResource(java.lang.String name) Finds the resource with the specified name on the URL search path.
java.util.List<java.lang.String>	getProviderURLs(java.lang.String protocol) Get the list of available provider urls with the given protocol.
java.lang.String	getWrappedFactoryName(java.lang.String protocol) Get the factory name with the given protocol.
java.nio.ByteBuffer	sendRequest(Message message, java.nio.channels.SocketChannel channel) Sends the given message on the given channel.

Methods inherited from class java.net.URLClassLoader

addURL, definePackage, 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, getResource, getResourceAsStream, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, 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

SmartClassLoader

public SmartClassLoader(java.lang.String host,
                        int port)

Creates a new classloader.

Parameters:

host - The given host.

port - The given port number.

Method Detail

getProviderURLs

public java.util.List<java.lang.String> getProviderURLs(java.lang.String protocol)

Get the list of available provider urls with the given protocol.

Parameters:

protocol - The given protocol used in the client side.

Returns:

The list of provider urls.

getWrappedFactoryName

public java.lang.String getWrappedFactoryName(java.lang.String protocol)

Get the factory name with the given protocol.

Parameters:

protocol - The protocol used in the client side.

Returns:

The factory name.

sendRequest

public java.nio.ByteBuffer sendRequest(Message message,
                                       java.nio.channels.SocketChannel channel)

Sends the given message on the given channel.

Parameters:

message - the message to send

channel - the channel used to send the message.

Returns:

the bytebuffer containing the answer (to analyze)

findClass

protected java.lang.Class<?> findClass(java.lang.String name)
                                throws java.lang.ClassNotFoundException

Finds and loads the class with the specified name from the URL search path.
If the super classloader doesn't find the class, it ask the remote server to download the class

Overrides:

findClass in class java.net.URLClassLoader

Parameters:

name - the name of the class

Returns:

the resulting class

Throws:

java.lang.ClassNotFoundException - if the class could not be found

findResource

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

Finds the resource with the specified name on the URL search path.
If resource is not found locally, search on the remote side.

Overrides:

findResource in class java.net.URLClassLoader

Parameters:

name - the name of the resource

Returns:

a URL for the resource, or null if the resource could not be found.