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 }