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; 021import java.util.StringTokenizer; 022 023/** 024 * Class for converting to/from String[] to be used instead of a 025 * {@link java.beans.PropertyEditor} which otherwise causes 026 * memory leaks as the JDK {@link java.beans.PropertyEditorManager} 027 * is a static class and has strong references to classes, causing 028 * problems in hot-deployment environments. 029 */ 030public class StringArrayConverter { 031 032 public static String[] convertToStringArray(Object value) { 033 if (value == null) { 034 return null; 035 } 036 037 String text = value.toString(); 038 if (text == null || text.length() == 0) { 039 return null; 040 } 041 042 StringTokenizer stok = new StringTokenizer(text, ","); 043 final List<String> list = new ArrayList<String>(); 044 045 while (stok.hasMoreTokens()) { 046 list.add(stok.nextToken()); 047 } 048 049 String[] array = list.toArray(new String[list.size()]); 050 return array; 051 } 052 053 public static String convertToString(String[] value) { 054 if (value == null || value.length == 0) { 055 return null; 056 } 057 058 StringBuffer result = new StringBuffer(String.valueOf(value[0])); 059 for (int i = 1; i < value.length; i++) { 060 result.append(",").append(value[i]); 061 } 062 063 return result.toString(); 064 } 065 066} 067