1 /*** 2 * 3 * Copyright 2004 Protique Ltd 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 **/ 18 package org.codehaus.activemq.message; 19 20 /*** 21 * ReceiptHolder is a utility class used for waiting for receipts from Packets sent to the broker 22 * 23 * @version $Revision: 1.5 $ 24 */ 25 public class ReceiptHolder { 26 private Receipt receipt; 27 private Object lock = new Object(); 28 private boolean notified; 29 30 /*** 31 * Construct a receipt holder 32 */ 33 public ReceiptHolder() { 34 } 35 36 /*** 37 * Set the Receipt for this holder 38 * 39 * @param r 40 */ 41 public void setReceipt(Receipt r) { 42 synchronized (lock) { 43 this.receipt = r; 44 notified = true; 45 lock.notify(); 46 } 47 } 48 49 /*** 50 * Get the Receipt 51 * 52 * @return the Receipt or null if it is closed 53 */ 54 public Receipt getReceipt() { 55 return getReceipt(0); 56 } 57 58 /*** 59 * wait upto <Code>timeout</Code> timeout ms to get a receipt 60 * 61 * @param timeout 62 * @return 63 */ 64 public Receipt getReceipt(int timeout) { 65 synchronized (lock) { 66 if (!notified) { 67 try { 68 lock.wait(timeout); 69 } 70 catch (InterruptedException e) { 71 e.printStackTrace(); 72 } 73 } 74 } 75 return this.receipt; 76 } 77 78 /*** 79 * close this holder 80 */ 81 public void close() { 82 synchronized (lock) { 83 notified = true; 84 lock.notifyAll(); 85 } 86 } 87 }