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/*
 * 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.
 */

// $Id: FactoryConfigurationError.java 446598 2006-09-15 12:55:40Z jeremias $

package javax.xml.parsers;

/**
 * Thrown when a problem with configuration with the Parser Factories
 * exists. This error will typically be thrown when the class of a
 * parser factory specified in the system properties cannot be found
 * or instantiated.
 *
 * @author Jeff Suttor
 * @version $Revision: 446598 $, $Date: 2006-09-15 08:55:40 -0400 (Fri, 15 Sep 2006) $
 */

public class FactoryConfigurationError extends Error {

    /**
     *Exception that represents the error.
     */
    private Exception exception;

    /**
     * Create a new FactoryConfigurationError with no
     * detail mesage.
     */

    public FactoryConfigurationError() {
        super();
        this.exception = null;
    }

    /**
     * Create a new FactoryConfigurationError with
     * the String  specified as an error message.
     *
     * @param msg The error message for the exception.
     */
    
    public FactoryConfigurationError(String msg) {
        super(msg);
        this.exception = null;
    }


    /**
     * Create a new FactoryConfigurationError with a
     * given Exception base cause of the error.
     *
     * @param e The exception to be encapsulated in a
     * FactoryConfigurationError.
     */
    
    public FactoryConfigurationError(Exception e) {
        super(e.toString());
        this.exception = e;
    }

    /**
     * Create a new FactoryConfigurationError with the
     * given Exception base cause and detail message.
     *
     * @param e The exception to be encapsulated in a
     * FactoryConfigurationError
     * @param msg The detail message.
     */
    
    public FactoryConfigurationError(Exception e, String msg) {
        super(msg);
        this.exception = e;
    }


    /**
     * Return the message (if any) for this error . If there is no
     * message for the exception and there is an encapsulated
     * exception then the message of that exception, if it exists will be 
     * returned. Else the name of the encapsulated exception will be
     * returned.
     *
     * @return The error message.
     */
    
    public String getMessage () {
        String message = super.getMessage ();
  
        if (message == null && exception != null) {
            return exception.getMessage();
        }

        return message;
    }
  
    /**
     * Return the actual exception (if any) that caused this exception to
     * be raised.
     *
     * @return The encapsulated exception, or null if there is none.
     */
    
    public Exception getException () {
        return exception;
    }
}