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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