ohair@286: /*
alanb@368:  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
ohair@286:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ohair@286:  *
ohair@286:  * This code is free software; you can redistribute it and/or modify it
ohair@286:  * under the terms of the GNU General Public License version 2 only, as
ohair@286:  * published by the Free Software Foundation.  Oracle designates this
ohair@286:  * particular file as subject to the "Classpath" exception as provided
ohair@286:  * by Oracle in the LICENSE file that accompanied this code.
ohair@286:  *
ohair@286:  * This code is distributed in the hope that it will be useful, but WITHOUT
ohair@286:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ohair@286:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
ohair@286:  * version 2 for more details (a copy is included in the LICENSE file that
ohair@286:  * accompanied this code).
ohair@286:  *
ohair@286:  * You should have received a copy of the GNU General Public License version
ohair@286:  * 2 along with this work; if not, write to the Free Software Foundation,
ohair@286:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ohair@286:  *
ohair@286:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@286:  * or visit www.oracle.com if you need additional information or have any
ohair@286:  * questions.
ohair@286:  */
ohair@286: 
ohair@286: package com.sun.xml.internal.ws.util;
ohair@286: 
ohair@286: import java.util.concurrent.ExecutionException;
ohair@286: import java.util.concurrent.Future;
ohair@286: import java.util.concurrent.TimeUnit;
ohair@286: 
ohair@286: /**
ohair@286:  * {@link Future} implementation that obtains an already available value.
ohair@286:  *
ohair@286:  * @author Kohsuke Kawaguchi
ohair@286:  * @author Jitendra Kotamraju
ohair@286:  */
ohair@286: public class CompletedFuture<T> implements Future<T> {
ohair@286:     private final T v;
ohair@286:     private final Throwable re;
ohair@286: 
ohair@286:     public CompletedFuture(T v, Throwable re) {
ohair@286:         this.v = v;
ohair@286:         this.re = re;
ohair@286:     }
ohair@286: 
ohair@286:     public boolean cancel(boolean mayInterruptIfRunning) {
ohair@286:         return false;
ohair@286:     }
ohair@286: 
ohair@286:     public boolean isCancelled() {
ohair@286:         return false;
ohair@286:     }
ohair@286: 
ohair@286:     public boolean isDone() {
ohair@286:         return true;
ohair@286:     }
ohair@286: 
ohair@286:     public T get() throws ExecutionException {
ohair@286:         if (re != null) {
ohair@286:             throw new ExecutionException(re);
ohair@286:         }
ohair@286:         return v;
ohair@286:     }
ohair@286: 
ohair@286:     public T get(long timeout, TimeUnit unit) throws ExecutionException {
ohair@286:         return get();
ohair@286:     }
ohair@286: }