001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 * 
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 * 
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package org.apache.log4j.config;
019
020/**
021 * Thrown when an error is encountered whilst attempting to set a property
022 * using the {@link PropertySetter} utility class.
023 * 
024 * @author Anders Kristensen
025 * @since 1.1
026 */
027public class PropertySetterException extends Exception {
028  private static final long serialVersionUID = -1352613734254235861L;
029  protected Throwable rootCause;
030  
031  public
032  PropertySetterException(String msg) {
033    super(msg);
034  }
035  
036  public
037  PropertySetterException(Throwable rootCause)
038  {
039    super();
040    this.rootCause = rootCause;
041  }
042  
043  /**
044     Returns descriptive text on the cause of this exception.
045   */
046  public
047  String getMessage() {
048    String msg = super.getMessage();
049    if (msg == null && rootCause != null) {
050      msg = rootCause.getMessage();
051    }
052    return msg;
053  }
054}