// Copyright 2006 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.tapestry.internal.services;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.tapestry.internal.structure.Page;
import org.apache.tapestry.services.ExceptionReporter;
import org.apache.tapestry.services.RequestExceptionHandler;
import org.apache.tapestry.services.Response;
/**
* Default implementation of {@link RequestExceptionHandler} that displays the standard
* ExceptionReport page. The page must implement the {@link ExceptionReporter} interface.
*/
public class DefaultRequestExceptionHandler implements RequestExceptionHandler
{
private final RequestPageCache _pageCache;
private final PageResponseRenderer _renderer;
private final Response _response;
private final Log _log;
public DefaultRequestExceptionHandler(RequestPageCache pageCache,
PageResponseRenderer renderer, Response response, Log log)
{
_pageCache = pageCache;
_renderer = renderer;
_response = response;
_log = log;
}
public void handleRequestException(Throwable exception) throws IOException
{
_log.error(ServicesMessages.requestException(exception), exception);
Page page = _pageCache.get("ExceptionReport");
ExceptionReporter rootComponent = (ExceptionReporter) page.getRootComponent();
// Let the page set up for the new exception.
rootComponent.reportException(exception);
_renderer.renderPageResponse(page, _response);
}
}