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
018 package org.apache.geronimo.common.propertyeditor;
019
020 import java.io.ByteArrayInputStream;
021 import java.io.IOException;
022 import java.util.Iterator;
023 import java.util.Properties;
024 import java.util.Map;
025
026 import org.apache.commons.logging.Log;
027 import org.apache.commons.logging.LogFactory;
028
029 /**
030 * A property editor for {@link java.util.Map}.
031 *
032 * @version $Rev: 706640 $ $Date: 2008-10-21 14:44:05 +0000 (Tue, 21 Oct 2008) $
033 */
034 public class MapEditor
035 extends TextPropertyEditorSupport
036 {
037 private static final Log log = LogFactory.getLog(MapEditor.class);
038 /**
039 *
040 * @throws PropertyEditorException An IOException occured.
041 */
042 public void setAsText(String text) {
043 try {
044 ByteArrayInputStream is = new ByteArrayInputStream(text == null? new byte[0]: text.getBytes());
045 Properties p = new Properties();
046 p.load(is);
047
048 setValue((Map)p);
049 } catch (IOException e) {
050 throw new PropertyEditorException(e.getMessage(), e);
051 }
052 }
053
054 public String getAsText() {
055 Map map = (Map) getValue();
056 if (!(map instanceof Properties)) {
057 Properties p = new Properties();
058 if(map != null) {
059 if(!map.containsKey(null) && !map.containsValue(null)) {
060 p.putAll(map);
061 } else {
062 // Map contains null keys or values. Replace null with empty string.
063 log.warn("Map contains null keys or values. Replacing null values with empty string.");
064 for(Iterator itr = map.entrySet().iterator(); itr.hasNext(); ) {
065 Map.Entry entry = (Map.Entry) itr.next();
066 Object key = entry.getKey();
067 Object value = entry.getValue();
068 if(key == null) {
069 key = "";
070 }
071 if(value == null) {
072 value = "";
073 }
074 p.put(key, value);
075 }
076 }
077 map = p;
078 }
079 }
080 PropertiesEditor pe = new PropertiesEditor();
081 pe.setValue(map);
082 return pe.getAsText();
083 }
084 }