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/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt 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.wsf.common;
// $Id: URLLoaderAdapter.java 3830 2007-07-09 17:01:33Z heiko.braun@jboss.com $
import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import org.jboss.wsf.spi.deployment.UnifiedVirtualFile;
/**
* Load resources through a URLClassLoader.<br>
* NOTE: The associated classloader doesn't do parent delegation.
*
*
* @author Heiko.Braun@jboss.org
* @since 25.01.2007
*/
public class URLLoaderAdapter implements UnifiedVirtualFile
{
private URL rootURL;
private URL resourceURL;
private transient URLClassLoader loader;
public URLLoaderAdapter(URL rootURL)
{
this.rootURL = rootURL;
}
private URLLoaderAdapter(URL rootURL, URLClassLoader loader, URL resourceURL)
{
this.rootURL = rootURL;
this.resourceURL = resourceURL;
this.loader = loader;
}
public UnifiedVirtualFile findChild(String resourcePath) throws IOException
{
URL resourceURL = null;
if (resourcePath != null)
{
// Try the child as URL
try
{
resourceURL = new URL(resourcePath);
}
catch (MalformedURLException ex)
{
// ignore
}
// Try the filename as File
if (resourceURL == null)
{
try
{
File file = new File(resourcePath);
if (file.exists())
resourceURL = file.toURL();
}
catch (MalformedURLException e)
{
// ignore
}
}
// Try the filename as Resource
if (resourceURL == null)
{
try
{
resourceURL = getResourceLoader().getResource(resourcePath);
}
catch (Exception ex)
{
// ignore
}
}
}
if (resourceURL == null)
throw new IOException("Cannot get URL for: " + resourcePath);
return new URLLoaderAdapter(rootURL, loader, resourceURL);
}
public URL toURL()
{
if (resourceURL != null)
return resourceURL;
else
return rootURL;
}
private URLClassLoader getResourceLoader()
{
if (loader == null)
{
loader = new URLClassLoader(new URL[] { rootURL });
}
return loader;
}
}
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