User: mnf999
Date: 02/01/19 19:47:47
Added: src/main/org/jboss/system UnifiedClassLoader.java
Log:
The unified classloader. Changed the order of lookup on classes first the class
that was passed and then the rest
Revision Changes Path
1.1 jboss/src/main/org/jboss/system/UnifiedClassLoader.java
Index: UnifiedClassLoader.java
===================================================================
/*
* JBoss, the OpenSource J2EE webOS
*
* Distributable under LGPL license.
* See terms of license at gnu.org.
*/
package org.jboss.system;
import java.net.URL;
import java.io.InputStream;
/**
* The URLClassLoader is associated with a given URL.
* It can load jar and sar (or jsr).
*
* <p>The ServiceLibraries keeps track of the UCL and asks everyone for
* resources and classes.
*
* @author <a href="[EMAIL PROTECTED]">Marc Fleury</a>
* @author <a href="[EMAIL PROTECTED]">Christoph G. Jung</a>
* @version $Revision: 1.1 $
*
* <p><b>20010830 marc fleury:</b>
* <ul>
* <li>Initial import
* </ul>
* <p><b>20011009 cgj:</b>
* <ul>
* <li>fixed default resolution behaviour
* </ul>
*/
public class UnifiedClassLoader
extends java.net.URLClassLoader
implements UnifiedClassLoaderMBean
{
/** One URL per classLoader in our case */
private URL url = null;
/** An SCL can also be loading on behalf of an MBean */
//private ObjectName mbean = null; not used
/** All SCL are just in orbit around a basic ServiceLibraries */
private static ServiceLibraries libraries;
/** The bootstrap interface to the log4j system */
private static BootstrapLogger log =
BootstrapLogger.getLogger(UnifiedClassLoader.class);
/**
* One url per SCL
*
* @param String application
* @param ClassLoader parent
*/
public UnifiedClassLoader(URL url)
{
super(new URL[] {url});
if (log.isDebugEnabled()) log.debug("New UCL with url "+url);
this.url = url;
try
{
if (libraries == null)
{
libraries = ServiceLibraries.getLibraries();
}
// A URL enabled SCL must register itself with the libraries to
// be queried
libraries.addClassLoader(this);
}
catch(Exception e)
{
e.printStackTrace();
log.warn("URL "+url+" could not be opened");
}
}
/**
* loadClass
*
* We intercept the load class to know exactly the dependencies
* of the underlying jar
*/
/*
USE THIS TO TRACE CLASS LOADING
if (name.endsWith("CHANGEME"))
{
log.debug("UCL LOAD "+this.hashCode()+" in loadClass "+name);
}
*/
public Class loadClass(String name, boolean resolve)
throws ClassNotFoundException
{
return libraries.loadClass(name, resolve, this);
}
public Class loadClassLocally (String name, boolean resolve)
throws ClassNotFoundException
{
return super.loadClass(name, resolve);
}
public URL getResource(String name)
{
URL resource = super.getResource(name);
if (resource == null)
{
resource = libraries.getResource(name, this);
}
/*
if (resource == null)
{
if( log.isTraceEnabled() )
log.trace("Did not find the UCL resource "+name);
}
*/
return resource;
}
public URL getResourceLocally(String name)
{
return super.getResource(name);
}
public InputStream getResourceAsStream(String name)
{
try
{
URL resourceUrl = getResource(name);
if (resourceUrl != null)
{
return resourceUrl.openStream();
}
}
catch (Exception ignore)
{
}
return null;
}
public URL getURL() {return url;}
public int hashCode()
{
return url.hashCode();
}
public boolean equals(Object other)
{
if (other instanceof UnifiedClassLoader)
{
return ((UnifiedClassLoader) other).getURL().equals(url);
}
return false;
}
public String toString()
{
StringBuffer tmp = new StringBuffer("JBoss UnifiedClassloader: keyURL : ");
tmp.append(getURL());
tmp.append(']');
return tmp.toString();
}
}
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