001 /**
002 *
003 * Copyright 2004 Protique Ltd
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * 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.activemq.util;
019
020 import java.util.Map;
021
022 /**
023 * A bunch of utility methods for working with maps
024 *
025 * @version $Revision: 1.1.1.1 $
026 */
027 public class MapHelper {
028 /**
029 * Extracts the value from the map and coerces to a String
030 */
031 public static String getString(Map map, String key) {
032 Object answer = map.get(key);
033 return (answer != null) ? answer.toString() : null;
034 }
035
036 /**
037 * Extracts the value from the map and coerces to an int value
038 * or returns a default value if one could not be found or coerced
039 */
040 public static int getInt(Map map, String key, int defaultValue) {
041 Object value = map.get(key);
042 if (value instanceof Number) {
043 return ((Number) value).intValue();
044 }
045 else if (value instanceof String) {
046 return Integer.parseInt((String) value);
047 }
048 return defaultValue;
049 }
050 }