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 */ 017 package org.apache.activemq.util; 018 019 import java.util.Iterator; 020 import java.util.Map; 021 022 import org.springframework.beans.factory.FactoryBean; 023 import org.springframework.beans.propertyeditors.ClassEditor; 024 import org.springframework.util.Assert; 025 026 import com.thoughtworks.xstream.XStream; 027 import com.thoughtworks.xstream.converters.Converter; 028 import com.thoughtworks.xstream.converters.ConverterMatcher; 029 import com.thoughtworks.xstream.converters.SingleValueConverter; 030 031 public class XStreamFactoryBean implements FactoryBean { 032 033 XStream xstream = new XStream(); 034 035 /** 036 * Sets the <code>Converters</code> or <code>SingleValueConverters</code> to be registered with the 037 * <code>XStream</code> instance. 038 * 039 * @see Converter 040 * @see SingleValueConverter 041 */ 042 public void setConverters(ConverterMatcher[] converters) { 043 for (int i = 0; i < converters.length; i++) { 044 if (converters[i] instanceof Converter) { 045 xstream.registerConverter((Converter) converters[i], i); 046 } 047 else if (converters[i] instanceof SingleValueConverter) { 048 xstream.registerConverter((SingleValueConverter) converters[i], i); 049 } 050 else { 051 throw new IllegalArgumentException("Invalid ConverterMatcher [" + converters[i] + "]"); 052 } 053 } 054 } 055 056 /** 057 * Set a alias/type map, consisting of string aliases mapped to <code>Class</code> instances (or Strings to be 058 * converted to <code>Class</code> instances). 059 * 060 * @see org.springframework.beans.propertyeditors.ClassEditor 061 */ 062 public void setAliases(Map aliases) { 063 for (Iterator iterator = aliases.entrySet().iterator(); iterator.hasNext();) { 064 Map.Entry entry = (Map.Entry) iterator.next(); 065 // Check whether we need to convert from String to Class. 066 Class type; 067 if (entry.getValue() instanceof Class) { 068 type = (Class) entry.getValue(); 069 } 070 else { 071 ClassEditor editor = new ClassEditor(); 072 editor.setAsText(String.valueOf(entry.getValue())); 073 type = (Class) editor.getValue(); 074 } 075 xstream.alias((String) entry.getKey(), type); 076 } 077 } 078 079 /** 080 * Sets the XStream mode. 081 * 082 * @see XStream#XPATH_REFERENCES 083 * @see XStream#ID_REFERENCES 084 * @see XStream#NO_REFERENCES 085 */ 086 public void setMode(int mode) { 087 xstream.setMode(mode); 088 } 089 090 /** 091 * Sets the classes, for which mappings will be read from class-level JDK 1.5+ annotation metadata. 092 * 093 * @see Annotations#configureAliases(XStream, Class[]) 094 */ 095 public void setAnnotatedClass(Class<?> annotatedClass) { 096 Assert.notNull(annotatedClass, "'annotatedClass' must not be null"); 097 xstream.processAnnotations(annotatedClass); 098 } 099 100 /** 101 * Sets annotated classes, for which aliases will be read from class-level JDK 1.5+ annotation metadata. 102 * 103 * @see Annotations#configureAliases(XStream, Class[]) 104 */ 105 public void setAnnotatedClasses(Class<?>[] annotatedClasses) { 106 Assert.notEmpty(annotatedClasses, "'annotatedClasses' must not be empty"); 107 xstream.processAnnotations(annotatedClasses); 108 } 109 110 public Object getObject() throws Exception { 111 return xstream; 112 } 113 114 public Class getObjectType() { 115 return XStream.class; 116 } 117 118 public boolean isSingleton() { 119 return true; 120 } 121 122 }