/*
* Copyright 2004 The Apache Software Foundation
*
* Licensed 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 javax.servlet.jsp.el;


/**
 * Represents any of the exception conditions that arise during the
 * operation evaluation of the evaluator.
 *
 * @since 2.0
 */
public class ELException
  extends Exception
{
  //-------------------------------------
  // Member variables
  //-------------------------------------

  private Throwable mRootCause;

  //-------------------------------------
  /**
   * Creates an ELException with no detail message.
   **/
  public ELException ()
  {
    super ();
  }

  //-------------------------------------
  /**
   * Creates an ELException with the provided detail message.
   *
   * @param pMessage the detail message
   **/
  public ELException (String pMessage)
  {
    super (pMessage);
  }

  //-------------------------------------
  /**
   * Creates an ELException with the given root cause.
   *
   * @param pRootCause the originating cause of this exception
   **/
  public ELException (Throwable pRootCause)
  {
    super( pRootCause.getLocalizedMessage() );
    mRootCause = pRootCause;
  }

  //-------------------------------------
  /**
   * Creates an ELException with the given detail message and root cause.
   *
   * @param pMessage the detail message
   * @param pRootCause the originating cause of this exception
   **/
  public ELException (String pMessage,
		      Throwable pRootCause)
  {
    super (pMessage);
    mRootCause = pRootCause;
  }

  //-------------------------------------
  /**
   * Returns the root cause.
   *
   * @return the root cause of this exception
   */
  public Throwable getRootCause ()
  {
    return mRootCause;
  }
}