ContextClassLoaderManager.java

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2009, Red Hat Middleware LLC, and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * 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.jboss.arquillian.container.weld.ee.embedded_1_1;

import java.io.IOException;

import org.jboss.shrinkwrap.api.classloader.ShrinkWrapClassLoader;

/**
 * ContextClassLoaderManager
 *
 * @author <a href="mailto:aslak@redhat.com">Aslak Knutsen</a>
 * @version $Revision: $
 */
public class ContextClassLoaderManager
{
   private ShrinkWrapClassLoader shrinkWrapClassLoader;
   private ClassLoader contextClassLoader;
   
   public ContextClassLoaderManager(final ShrinkWrapClassLoader shrinkWrapClassLoader)
   {
      if(shrinkWrapClassLoader == null)
      {
         throw new IllegalArgumentException("ShrinkWrapClassLoader must be specified");
      }
      this.shrinkWrapClassLoader = shrinkWrapClassLoader;
   }
   
   public void enable() 
   {
      this.contextClassLoader = Thread.currentThread().getContextClassLoader();
      Thread.currentThread().setContextClassLoader(shrinkWrapClassLoader);
   }
   
   public void disable() 
   {
      Thread.currentThread().setContextClassLoader(contextClassLoader);
      try
      {
         this.shrinkWrapClassLoader.close();
      }
      catch (IOException e)
      {
         throw new RuntimeException("Could not close ShrinkWrapClassLoader", e); 
      }
   }
}