/*
* 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.loading;
import java.net.URL;
/** An extension of UnifiedClassLoader that manages a thread based loading
* strategy to work around the locking problems associated with the VM
* initiated locking due to the synchronized loadClassInternal method of
* ClassLoader which cannot be overriden.
* @author <a href="scott.stark@jboss.org">Scott Stark</a>
* @version $Revision: 81022 $
*/
public class UnifiedClassLoader3 extends UnifiedClassLoader
implements UnifiedClassLoader3MBean
{
// Static --------------------------------------------------------
// Attributes ----------------------------------------------------
// Constructors --------------------------------------------------
/**
* Construct a <tt>UnifiedClassLoader</tt> without registering it to the
* classloader repository.
*
* @param url the single URL to load classes from.
*/
public UnifiedClassLoader3(URL url)
{
this(url, null);
}
/**
* Construct a <tt>UnifiedClassLoader</tt> without registering it to the
* classloader repository.
*
* @param url the single URL to load classes from.
* @param origURL the possibly null original URL from which url may
* be a local copy or nested jar.
*/
public UnifiedClassLoader3(URL url, URL origURL)
{
super(url, origURL);
}
/** Construct a UnifiedClassLoader and associate it with the given
* repository.
* @param url The single URL to load classes from.
* @param origURL the possibly null original URL from which url may
* be a local copy or nested jar.
* @param repository the repository this classloader delegates to
*/
public UnifiedClassLoader3(URL url, URL origURL, LoaderRepository repository)
{
this(url, origURL);
// set the repository reference
this.setRepository(repository);
}
/** Construct a UnifiedClassLoader and associate it with the given
* repository.
* @param url The single URL to load classes from.
* @param origURL the possibly null original URL from which url may
* be a local copy or nested jar.
* @param parent the parent class loader to use
* @param repository the repository this classloader delegates to
*/
public UnifiedClassLoader3(URL url, URL origURL, ClassLoader parent,
LoaderRepository repository)
{
super(url, origURL, parent);
// set the repository reference
this.setRepository(repository);
}
// Public --------------------------------------------------------
/**
* Retruns a string representaion of this UCL.
*/
public String toString()
{
StringBuffer tmp = new StringBuffer(super.toString());
tmp.setCharAt(tmp.length()-1, ',');
tmp.append("addedOrder=");
tmp.append(getAddedOrder());
tmp.append('}');
return tmp.toString();
}
}