2009/05/20 - Apache Shale has been retired.

 /*

  * 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.shale.view.impl;

 import java.util.ArrayList;

 import java.util.List;

 import javax.faces.context.FacesContext;

 import org.apache.shale.view.ExceptionHandler;

 import org.apache.shale.view.faces.FacesConstants;

 /**

  * <p>Default implementation of the {@link ExceptionHandler} interface.</p>

  *

  * $Id: ExceptionHandlerImpl.java 422609 2006-07-17 03:17:18Z craigmcc $

  */

 public class DefaultExceptionHandler implements ExceptionHandler {

     /**

      * <p>Log the specified exception, and record it in a request scoped

      * <code>List</code> that can be used to report them all at a future

      * point in time to report all of the accumulated exceptions.</p>

      *

      * @param exception Exception to be handled

      */

     public void handleException(Exception exception) {

         // Log the exception unconditionally

         FacesContext context = FacesContext.getCurrentInstance();

         if (context != null) {

             context.getExternalContext().log(exception.getMessage(), exception);

         } else {

             System.out.println(exception.getMessage());

             exception.printStackTrace(System.out);

         }

         // Are we within the context of a JavaServer Faces request?

         // If so, accumulate this exception to the list that can be

         // reported at the completion of the request.

         if (context == null) {

             return;

         }

         List list = (List) context.getExternalContext().getRequestMap().

                 get(FacesConstants.EXCEPTIONS_LIST);

         if (list == null) {

             list = new ArrayList();

             context.getExternalContext().getRequestMap().

                     put(FacesConstants.EXCEPTIONS_LIST, list);

         }

         list.add(exception);

     }

 }