/*
 * 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 javax.ejb;

import java.io.Serializable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

/**
 * Wraps the result of an asynchronous method call as a Future object 
 * preserving compatability with the business interface signature. The 
 * value specified in the constructor will be retrieved by the container 
 * and made available to the client. 
 * 
 * @author <a href="mailto:cdewolf@redhat.com">Carlo de Wolf</a>
 * @version $Revision: $
 * @since 3.1
 */
public final class AsyncResult<V> implements Future<V>, Serializable
{
   private static final long serialVersionUID = 1L;

   private V result;
   
   public AsyncResult(V result)
   {
      this.result = result;
   }
   
   public boolean cancel(boolean mayInterruptIfRunning)
   {
      return false;
   }

   public V get() throws InterruptedException, ExecutionException
   {
      return result;
   }

   public V get(long timeout, TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException
   {
      return result;
   }

   public boolean isCancelled()
   {
      return false;
   }

   public boolean isDone()
   {
      return true;
   }
}