001    /* $Id: PluginConfigurationException.java 729089 2008-12-23 20:22:26Z rahul $
002     *
003     * Licensed to the Apache Software Foundation (ASF) under one or more
004     * contributor license agreements.  See the NOTICE file distributed with
005     * this work for additional information regarding copyright ownership.
006     * The ASF licenses this file to You under the Apache License, Version 2.0
007     * (the "License"); you may not use this file except in compliance with
008     * the License.  You may obtain a copy of the License at
009     * 
010     *      http://www.apache.org/licenses/LICENSE-2.0
011     * 
012     * Unless required by applicable law or agreed to in writing, software
013     * distributed under the License is distributed on an "AS IS" BASIS,
014     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */ 
018    
019    package org.apache.commons.digester.plugins;
020    
021    /**
022     * Thrown when an error occurs due to the way the calling application uses
023     * the plugins module. Because the pre-existing Digester API doesn't provide
024     * any option for throwing checked exceptions at some points where Plugins
025     * can potentially fail, this exception extends RuntimeException so that it
026     * can "tunnel" through these points.
027     *
028     * @since 1.6
029     */
030    
031    public class PluginConfigurationException extends RuntimeException {
032    
033        private static final long serialVersionUID = 1L;
034        private Throwable cause = null;
035    
036        /**
037         * @param cause underlying exception that caused this to be thrown
038         */
039        public PluginConfigurationException(Throwable cause) {
040            this(cause.getMessage());
041            this.cause = cause;
042        }
043    
044        /**
045         * @param msg describes the reason this exception is being thrown.
046         */
047        public PluginConfigurationException(String msg) {
048            super(msg);
049        }
050    
051        /**
052         * @param msg describes the reason this exception is being thrown.
053         * @param cause underlying exception that caused this to be thrown
054         */
055        public PluginConfigurationException(String msg, Throwable cause) {
056            this(msg);
057            this.cause = cause;
058        }
059    
060        /**
061         * Return the cause of this exception (if any) as specified in the
062         * exception constructor.
063         * 
064         * @since 1.8
065         */
066        public Throwable getCause() {
067            return cause;
068        }
069    }