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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
    18  package org.apache.log4j.config;
    19
    20  /**
    21   * Thrown when an error is encountered whilst attempting to set a property
    22   * using the {@link PropertySetter} utility class.
    23   *
    24   * @author Anders Kristensen
    25   * @since 1.1
    26   */
    27  public class PropertySetterException extends Exception {
    28    private static final long serialVersionUID = -1352613734254235861L;
    29    protected Throwable rootCause;
    30
    31    public
    32    PropertySetterException(String msg) {
    33      super(msg);
    34    }
    35
    36    public
    37    PropertySetterException(Throwable rootCause)
    38    {
    39      super();
    40      this.rootCause = rootCause;
    41    }
    42
    43    /**
    44       Returns descriptive text on the cause of this exception.
    45     */
    46    public
    47    String getMessage() {
    48      String msg = super.getMessage();
    49      if (msg == null && rootCause != null) {
    50        msg = rootCause.getMessage();
    51      }
    52      return msg;
    53    }
    54  }