001    /*
002     * Copyright (C) 2003-2009 eXo Platform SAS.
003     *
004     * This is free software; you can redistribute it and/or modify it
005     * under the terms of the GNU Lesser General Public License as
006     * published by the Free Software Foundation; either version 2.1 of
007     * the License, or (at your option) any later version.
008     *
009     * This software is distributed in the hope that it will be useful,
010     * but WITHOUT ANY WARRANTY; without even the implied warranty of
011     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012     * Lesser General Public License for more details.
013     *
014     * You should have received a copy of the GNU Lesser General Public
015     * License along with this software; if not, write to the Free
016     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018     */
019    
020    package org.crsh.util;
021    
022    import java.util.concurrent.ExecutionException;
023    import java.util.concurrent.Future;
024    import java.util.concurrent.TimeUnit;
025    import java.util.concurrent.TimeoutException;
026    
027    /**
028     * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
029     * @version $Revision$
030     */
031    public class ImmediateFuture<V> implements Future<V> {
032    
033      /** . */
034      private final V value;
035    
036      public ImmediateFuture(V value) {
037        this.value = value;
038      }
039    
040      public boolean cancel(boolean mayInterruptIfRunning) {
041        return false;
042      }
043    
044      public boolean isCancelled() {
045        return false;
046      }
047    
048      public boolean isDone() {
049        return true;
050      }
051    
052      public V get() throws InterruptedException, ExecutionException {
053        return value;
054      }
055    
056      public V get(long timeout, TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException {
057        return value;
058      }
059    }