001/** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.activemq.util; 018 019import java.util.ArrayList; 020import java.util.List; 021 022import org.apache.activemq.command.ActiveMQDestination; 023 024/** 025 * Special converter for String -> List<ActiveMQDestination> to be used instead of a 026 * {@link java.beans.PropertyEditor} which otherwise causes 027 * memory leaks as the JDK {@link java.beans.PropertyEditorManager} 028 * is a static class and has strong references to classes, causing 029 * problems in hot-deployment environments. 030 */ 031public class StringToListOfActiveMQDestinationConverter { 032 033 public static List<ActiveMQDestination> convertToActiveMQDestination(Object value) { 034 if (value == null) { 035 return null; 036 } 037 038 // text must be enclosed with [] 039 040 String text = value.toString(); 041 if (text.startsWith("[") && text.endsWith("]")) { 042 text = text.substring(1, text.length() - 1).trim(); 043 044 if (text.isEmpty()) { 045 return null; 046 } 047 048 String[] array = text.split(","); 049 050 List<ActiveMQDestination> list = new ArrayList<ActiveMQDestination>(); 051 for (String item : array) { 052 list.add(ActiveMQDestination.createDestination(item.trim(), ActiveMQDestination.QUEUE_TYPE)); 053 } 054 055 return list; 056 } else { 057 return null; 058 } 059 } 060 061 public static String convertFromActiveMQDestination(Object value) { 062 if (value == null) { 063 return null; 064 } 065 066 StringBuilder sb = new StringBuilder("["); 067 if (value instanceof List) { 068 List list = (List) value; 069 for (int i = 0; i < list.size(); i++) { 070 Object e = list.get(i); 071 if (e instanceof ActiveMQDestination) { 072 ActiveMQDestination destination = (ActiveMQDestination) e; 073 sb.append(destination); 074 if (i < list.size() - 1) { 075 sb.append(", "); 076 } 077 } 078 } 079 } 080 sb.append("]"); 081 082 if (sb.length() > 2) { 083 return sb.toString(); 084 } else { 085 return null; 086 } 087 } 088 089}