1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. 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 package org.apache.commons.scxml2.env;
18
19 import java.io.Serializable;
20
21 import org.apache.commons.logging.Log;
22 import org.apache.commons.logging.LogFactory;
23 import org.apache.commons.scxml2.SCXMLListener;
24 import org.apache.commons.scxml2.model.EnterableState;
25 import org.apache.commons.scxml2.model.Transition;
26 import org.apache.commons.scxml2.model.TransitionTarget;
27
28
29 /**
30 * Simple SCXML Listener that logs execution.
31 */
32 public class SimpleSCXMLListener implements SCXMLListener, Serializable {
33
34 /** Serial version UID. */
35 private static final long serialVersionUID = 1L;
36 /** Log. */
37 private Log log = LogFactory.getLog(getClass());
38
39
40 /**
41 * @see SCXMLListener#onEntry(EnterableState)
42 */
43 public void onEntry(final EnterableState state) {
44 if (log.isInfoEnabled()) {
45 log.info("enter " + LogUtils.getTTPath(state));
46 }
47 }
48
49 /**
50 * @see SCXMLListener#onExit(EnterableState)
51 */
52 public void onExit(final EnterableState state) {
53 if (log.isInfoEnabled()) {
54 log.info("exit " + LogUtils.getTTPath(state));
55 }
56 }
57
58 /**
59 * @see SCXMLListener#onTransition(TransitionTarget,TransitionTarget,Transition,String)
60 */
61 public void onTransition(final TransitionTarget from,
62 final TransitionTarget to, final Transition transition, String event) {
63 if (log.isInfoEnabled()) {
64 log.info("transition " + LogUtils.transToString(from, to, transition, event));
65 }
66 }
67
68 }
69