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 19 package org.codehaus.activemq.filter; 20 21 import javax.jms.Destination; 22 import javax.jms.JMSException; 23 import javax.jms.Message; 24 import java.util.ArrayList; 25 import java.util.List; 26 27 /*** 28 * Helper class for decomposing a Destination into a number of paths 29 * 30 * @version $Revision: 1.1 $ 31 */ 32 public class DestinationPath { 33 34 public static String[] getDestinationPaths(String subject) { 35 List list = new ArrayList(); 36 int previous = 0; 37 int lastIndex = subject.length() - 1; 38 while (true) { 39 int idx = subject.indexOf('.', previous); 40 if (idx < 0) { 41 list.add(subject.substring(previous, lastIndex + 1)); 42 break; 43 } 44 list.add(subject.substring(previous, idx)); 45 previous = idx + 1; 46 } 47 String[] answer = new String[list.size()]; 48 list.toArray(answer); 49 return answer; 50 } 51 52 public static String[] getDestinationPaths(Message message) throws JMSException { 53 return getDestinationPaths(message.getJMSDestination()); 54 } 55 56 public static String[] getDestinationPaths(Destination destination) { 57 return getDestinationPaths(destination.toString()); 58 } 59 60 /*** 61 * Converts the paths to a single String seperated by dots. 62 * 63 * @param paths 64 * @return 65 */ 66 public static String toString(String[] paths) { 67 StringBuffer buffer = new StringBuffer(); 68 for (int i = 0; i < paths.length; i++) { 69 if (i > 0) { 70 buffer.append("."); 71 } 72 String path = paths[i]; 73 if (path == null) { 74 buffer.append("*"); 75 } 76 else { 77 buffer.append(path); 78 } 79 } 80 return buffer.toString(); 81 } 82 }