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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.management;
19  
20  import javax.management.j2ee.statistics.Statistic;
21  import javax.management.j2ee.statistics.Stats;
22  import java.util.Collection;
23  import java.util.HashMap;
24  import java.util.Map;
25  import java.util.Set;
26  
27  /***
28   * Base class for a Stats implementation
29   *
30   * @version $Revision: 1.2 $
31   */
32  public class StatsImpl implements Stats, Resettable {
33      private Map map = new HashMap();
34  
35      public StatsImpl() {
36      }
37  
38      public StatsImpl(Map map) {
39          this.map = map;
40      }
41  
42      public void reset() {
43          Statistic[] stats = getStatistics();
44          for (int i = 0, size = stats.length; i < size; i++) {
45              Statistic stat = stats[i];
46              if (stat instanceof Resettable) {
47                  Resettable r = (Resettable) stat;
48                  r.reset();
49              }
50          }
51      }
52  
53      public Statistic getStatistic(String name) {
54          return (Statistic) map.get(name);
55      }
56  
57      public String[] getStatisticNames() {
58          Set keys = map.keySet();
59          String[] answer = new String[keys.size()];
60          keys.toArray(answer);
61          return answer;
62      }
63  
64      public Statistic[] getStatistics() {
65          Collection values = map.values();
66          Statistic[] answer = new Statistic[values.size()];
67          values.toArray(answer);
68          return answer;
69      }
70  
71      protected void addStatistic(String name, Statistic statistic) {
72          map.put(name, statistic);
73      }
74  }