1 /***
2 *
3 * Copyright 2004 Protique Ltd
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 **/
18 package org.codehaus.activemq.util;
19
20 import java.util.Map;
21
22 /***
23 * A bunch of utility methods for working with maps
24 *
25 * @version $Revision: 1.1 $
26 */
27 public class MapHelper {
28 /***
29 * Extracts the value from the map and coerces to a String
30 */
31 public static String getString(Map map, String key) {
32 Object answer = map.get(key);
33 return (answer != null) ? answer.toString() : null;
34 }
35
36 /***
37 * Extracts the value from the map and coerces to an int value
38 * or returns a default value if one could not be found or coerced
39 */
40 public static int getInt(Map map, String key, int defaultValue) {
41 Object value = map.get(key);
42 if (value instanceof Number) {
43 return ((Number) value).intValue();
44 }
45 else if (value instanceof String) {
46 return Integer.parseInt((String) value);
47 }
48 return defaultValue;
49 }
50 }