/*
* Copyright 2004,2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.bsf.util.event.generator;
import java.util.Hashtable;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
public class AdapterClassLoader extends ClassLoader
{
private static Hashtable classCache = new Hashtable();
private Class c;
private Log logger = LogFactory.getLog(this.getClass().getName());
public AdapterClassLoader()
{
super();
}
public synchronized Class defineClass(String name, byte[] b)
{
if ((c = getLoadedClass(name)) == null)
{
c = defineClass(name.replace('/','.'), b, 0, b.length); // rgf, 2006-02-03
put(name, c);
}
else
{
logger.error("AdapterClassLoader: " + c +
" previously loaded. Can not redefine class.");
}
return c;
}
final protected Class findClass(String name)
{
return get(name);
}
final protected Class get(String name)
{
return (Class)classCache.get(name);
}
public synchronized Class getLoadedClass(String name)
{
Class c = findLoadedClass(name);
if (c == null)
{
try
{
c = findSystemClass(name);
}
catch (ClassNotFoundException e)
{
}
}
if (c == null)
{
c = findClass(name);
}
return c;
}
protected synchronized Class loadClass(String name, boolean resolve)
throws ClassNotFoundException
{
Class c = getLoadedClass(name);
if (c != null && resolve)
{
resolveClass(c);
}
return c;
}
// Not in JDK 1.1, only in JDK 1.2.
// public AdapterClassLoader(ClassLoader loader)
// {
// super(loader);
// }
final protected void put(String name, Class c)
{
classCache.put(name, c);
}
}