src/main/java/org/apache/commons/digester/xmlrules/XmlLoadException.java

/* $Id$
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


package org.apache.commons.digester.xmlrules;


/**
 * Thrown when an error occurs while parsing XML into Digester rules.
 *
 * @since 1.2
 */
public class XmlLoadException extends RuntimeException {

    private static final long serialVersionUID = 1L;
    private Throwable cause = null;

    /**
     * @param cause underlying exception that caused this to be thrown
     */
    public XmlLoadException(Throwable cause) {
        this(cause.getMessage());
        this.cause = cause;
    }

    public XmlLoadException(String msg) {
        super(msg);
    }

    public XmlLoadException(String msg, Throwable cause) {
        this(msg);
        this.cause = cause;
    }
    
    /** 
     * Returns the cause of this throwable or null if the cause is 
     * nonexistent or unknown. 
     */
    @Override
    public Throwable getCause() {
        return cause;
    }
}