/*

 * Copyright (c) 2000, 2005, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package javax.xml.transform;

/**

 * Thrown when a problem with configuration with the Transformer Factories

 * exists. This error will typically be thrown when the class of a

 * transformation factory specified in the system properties cannot be found

 * or instantiated.

 *

 * @since 1.4

 */

public class TransformerFactoryConfigurationError extends Error {

    private static final long serialVersionUID = -6527718720676281516L;

    /**

     * <code>Exception</code> for the

     *  <code>TransformerFactoryConfigurationError</code>.

     */

    private Exception exception;

    /**

     * Create a new <code>TransformerFactoryConfigurationError</code> with no

     * detail message.

     */

    public TransformerFactoryConfigurationError() {

        super();

        this.exception = null;

    }

    /**

     * Create a new <code>TransformerFactoryConfigurationError</code> with

     * the <code>String</code> specified as an error message.

     *

     * @param msg The error message for the exception.

     */

    public TransformerFactoryConfigurationError(String msg) {

        super(msg);

        this.exception = null;

    }

    /**

     * Create a new <code>TransformerFactoryConfigurationError</code> with a

     * given <code>Exception</code> base cause of the error.

     *

     * @param e The exception to be encapsulated in a

     * TransformerFactoryConfigurationError.

     */

    public TransformerFactoryConfigurationError(Exception e) {

        super(e.toString());

        this.exception = e;

    }

    /**

     * Create a new <code>TransformerFactoryConfigurationError</code> with the

     * given <code>Exception</code> base cause and detail message.

     *

     * @param e The exception to be encapsulated in a

     * TransformerFactoryConfigurationError

     * @param msg The detail message.

     */

    public TransformerFactoryConfigurationError(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 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;

    }

    /**

     * use the exception chaining mechanism of JDK1.4

    */

    @Override

    public Throwable getCause() {

        return exception;

    }

}