001    /* $Id: PluginConfigurationException.java 476205 2006-11-17 16:43:10Z dennisl $
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        private Throwable cause = null;
033    
034        /**
035         * @param cause underlying exception that caused this to be thrown
036         */
037        public PluginConfigurationException(Throwable cause) {
038            this(cause.getMessage());
039            this.cause = cause;
040        }
041    
042        /**
043         * @param msg describes the reason this exception is being thrown.
044         */
045        public PluginConfigurationException(String msg) {
046            super(msg);
047        }
048    
049        /**
050         * @param msg describes the reason this exception is being thrown.
051         * @param cause underlying exception that caused this to be thrown
052         */
053        public PluginConfigurationException(String msg, Throwable cause) {
054            this(msg);
055            this.cause = cause;
056        }
057    
058        /**
059         * Return the cause of this exception (if any) as specified in the
060         * exception constructor.
061         * 
062         * @since 1.8
063         */
064        public Throwable getCause() {
065            return cause;
066        }
067    }