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Central module for Tapestry, containing interfaces to the Java
Servlet API and all core services and components.
// Copyright 2006, 2008 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 org.apache.tapestry5.services;
import java.io.IOException;
/**
* Service invoked when an uncaught exception occurs. The error handler is responsible for providing a response to the
* user to describe the error.
*/
public interface RequestExceptionHandler
{
/**
* Reponsible for handling the error in some way and providing some response to the client. A
* default implementation may render an error response page.
*
*
* The handler is also responsible for setting the response status and the X-Tapestry-ErrorMessage response header.
* These are very important in Ajax requests to allow the client-side logic to detect the error and present it to
* the user.
*
* @param exception uncaught exception to be reported
* @throws IOException
*/
void handleRequestException(Throwable exception) throws IOException;
}