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1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package com.sun.xml.internal.ws.util; |
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27 |
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28 import java.util.concurrent.ExecutionException; |
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29 import java.util.concurrent.Future; |
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30 import java.util.concurrent.TimeUnit; |
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31 |
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32 /** |
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33 * {@link Future} implementation that obtains an already available value. |
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34 * |
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35 * @author Kohsuke Kawaguchi |
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36 * @author Jitendra Kotamraju |
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37 */ |
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38 public class CompletedFuture<T> implements Future<T> { |
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39 private final T v; |
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40 private final Throwable re; |
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41 |
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42 public CompletedFuture(T v, Throwable re) { |
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43 this.v = v; |
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44 this.re = re; |
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45 } |
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46 |
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47 public boolean cancel(boolean mayInterruptIfRunning) { |
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48 return false; |
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49 } |
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50 |
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51 public boolean isCancelled() { |
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52 return false; |
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53 } |
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54 |
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55 public boolean isDone() { |
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56 return true; |
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57 } |
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58 |
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59 public T get() throws ExecutionException { |
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60 if (re != null) { |
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61 throw new ExecutionException(re); |
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62 } |
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63 return v; |
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64 } |
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65 |
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66 public T get(long timeout, TimeUnit unit) throws ExecutionException { |
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67 return get(); |
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68 } |
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69 } |