/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.mx.server;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectStreamClass;
import java.io.IOException;
import java.lang.reflect.Proxy;
/**
* This replaces the EjbossInputStream in the storage package.
* The input stream will take a class loader in its constructor and look
* into it to retrieve the class definitions.
* It is used throughout the server to deserialize parameters and objects
* whose definition are in a jar and not the global classpath
* It also has better comments than the previous version.
*
* @author <a href="rickard@dreambean.com">Rickard Oberg</a>
* @since Ejboss 0.9
*/
public class ObjectInputStreamWithClassLoader
extends ObjectInputStream {
/**
* The classloader to use when the default classloader cannot find
* the classes in the stream.
*/
ClassLoader cl;
/******************************************************************************/
/******************************************************************************/
/*
/* CONSTRUCTORS
/*
/******************************************************************************/
/******************************************************************************/
/**
* Construct a new instance with the given classloader and input stream.
*
* @param ClassLoader classloader to use
* @param InputStream stream to read objects from
*/
public ObjectInputStreamWithClassLoader(InputStream in, ClassLoader cl)
throws IOException {
super(in);
this.cl = cl;
}
/******************************************************************************/
/******************************************************************************/
/*
/* OVERWRITING <ObjectInputStream>
/*
/******************************************************************************/
/******************************************************************************/
/**
* Resolve the class described in the osc parameter. First, try the
* default classloader (implemented by the super class). If it cannot
* load the class, try the classloader given to this instance.
*
* @param ObjectStreamClass class description object
* @return the Class corresponding to class description
* @exception IOException if an I/O error occurs
* @exception ClassNotFoundException if the class cannot be found by the classloader
*/
protected Class resolveClass(ObjectStreamClass osc)
throws IOException, ClassNotFoundException {
return cl.loadClass(osc.getName());
}
protected Class resolveProxyClass( String[] interfaces )
throws IOException, ClassNotFoundException {
Class[] interfacesClass = new Class[interfaces.length];
for( int i=0; i< interfaces.length; i++ )
{
interfacesClass[i] = Class.forName(interfaces[i], false, cl);
}
return Proxy.getProxyClass(cl, interfacesClass);
}
}