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1   /*
2    *
3    *   Copyright 2005 The Apache Software Foundation.
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.apache.commons.scxml.env;
19  
20  import org.apache.commons.logging.Log;
21  import org.apache.commons.logging.LogFactory;
22  
23  import org.apache.commons.scxml.SCXMLListener;
24  import org.apache.commons.scxml.model.Transition;
25  import org.apache.commons.scxml.model.TransitionTarget;
26  
27  
28  /***
29   * Simple SCXML Listener that logs execution.
30   */
31  public class SimpleSCXMLListener implements SCXMLListener {
32  
33      /*** Log. */
34      private Log log = LogFactory.getLog(getClass());
35  
36  
37      /***
38       * @see SCXMLListener#onEntry(TransitionTarget)
39       */
40      public void onEntry(final TransitionTarget state) {
41          if (log.isInfoEnabled()) {
42              log.info(LogUtils.getTTPath(state));
43          }
44      }
45  
46      /***
47       * @see SCXMLListener#onExit(TransitionTarget)
48       */
49      public void onExit(final TransitionTarget state) {
50          if (log.isInfoEnabled()) {
51              log.info(LogUtils.getTTPath(state));
52          }
53      }
54  
55      /***
56  * @see SCXMLListener#onTransition(TransitionTarget,TransitionTarget,Transition)
57       */
58      public void onTransition(final TransitionTarget from,
59              final TransitionTarget to, final Transition transition) {
60          if (log.isInfoEnabled()) {
61              log.info(LogUtils.transToString(from, to, transition));
62          }
63      }
64  
65  }
66