Source code: org/apache/commons/jxpath/MapDynamicPropertyHandler.java
1 /*
2 * Copyright 1999-2004 The Apache Software Foundation
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.apache.commons.jxpath;
17
18 import java.util.Iterator;
19 import java.util.Map;
20 import java.util.Set;
21
22 /**
23 * Implements the DynamicPropertyHandler interface for java.util.Map.
24 *
25 * @author Dmitri Plotnikov
26 * @version $Revision: 1.7 $ $Date: 2004/03/02 01:03:14 $
27 */
28 public class MapDynamicPropertyHandler implements DynamicPropertyHandler {
29
30 private static final String[] STRING_ARRAY = new String[0];
31
32 /**
33 * Returns string representations of all keys in the map.
34 */
35 public String[] getPropertyNames(Object object) {
36 Map map = (Map) object;
37 Set set = map.keySet();
38 String names[] = new String[set.size()];
39 Iterator it = set.iterator();
40 for (int i = 0; i < names.length; i++) {
41 names[i] = String.valueOf(it.next());
42 }
43 return names;
44 }
45
46 /**
47 * Returns the value for the specified key.
48 */
49 public Object getProperty(Object object, String propertyName) {
50 return ((Map) object).get(propertyName);
51 }
52
53 /**
54 * Sets the specified key value.
55 */
56 public void setProperty(Object object, String propertyName, Object value) {
57 ((Map) object).put(propertyName, value);
58 }
59 }