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    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.scxml.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.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, Serializable {
    32
    33      /*** Serial version UID. */
    34      private static final long serialVersionUID = 1L;
    35      /*** Log. */
    36      private Log log = LogFactory.getLog(getClass());
    37
    38
    39      /***
    40       * @see SCXMLListener#onEntry(TransitionTarget)
    41       */
    42      public void onEntry(final TransitionTarget state) {
    43          if (log.isInfoEnabled()) {
    44              log.info(LogUtils.getTTPath(state));
    45          }
    46      }
    47
    48      /***
    49       * @see SCXMLListener#onExit(TransitionTarget)
    50       */
    51      public void onExit(final TransitionTarget state) {
    52          if (log.isInfoEnabled()) {
    53              log.info(LogUtils.getTTPath(state));
    54          }
    55      }
    56
    57      /***
    58  * @see SCXMLListener#onTransition(TransitionTarget,TransitionTarget,Transition)
    59       */
    60      public void onTransition(final TransitionTarget from,
    61              final TransitionTarget to, final Transition transition) {
    62          if (log.isInfoEnabled()) {
    63              log.info(LogUtils.transToString(from, to, transition));
    64          }
    65      }
    66
    67  }
    68