01: // Copyright 2006 The Apache Software Foundation
02: //
03: // Licensed under the Apache License, Version 2.0 (the "License");
04: // you may not use this file except in compliance with the License.
05: // You may obtain a copy of the License at
06: //
07: // http://www.apache.org/licenses/LICENSE-2.0
08: //
09: // Unless required by applicable law or agreed to in writing, software
10: // distributed under the License is distributed on an "AS IS" BASIS,
11: // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12: // See the License for the specific language governing permissions and
13: // limitations under the License.
14:
15: package org.apache.tapestry.internal.services;
16:
17: import java.io.IOException;
18:
19: import org.apache.commons.logging.Log;
20: import org.apache.tapestry.internal.structure.Page;
21: import org.apache.tapestry.services.ExceptionReporter;
22: import org.apache.tapestry.services.RequestExceptionHandler;
23: import org.apache.tapestry.services.Response;
24:
25: /**
26: * Default implementation of {@link RequestExceptionHandler} that displays the standard
27: * ExceptionReport page. The page must implement the {@link ExceptionReporter} interface.
28: */
29: public class DefaultRequestExceptionHandler implements
30: RequestExceptionHandler {
31: private final RequestPageCache _pageCache;
32:
33: private final PageResponseRenderer _renderer;
34:
35: private final Response _response;
36:
37: private final Log _log;
38:
39: public DefaultRequestExceptionHandler(RequestPageCache pageCache,
40: PageResponseRenderer renderer, Response response, Log log) {
41: _pageCache = pageCache;
42: _renderer = renderer;
43: _response = response;
44: _log = log;
45: }
46:
47: public void handleRequestException(Throwable exception)
48: throws IOException {
49: _log.error(ServicesMessages.requestException(exception),
50: exception);
51:
52: Page page = _pageCache.get("ExceptionReport");
53:
54: ExceptionReporter rootComponent = (ExceptionReporter) page
55: .getRootComponent();
56:
57: // Let the page set up for the new exception.
58:
59: rootComponent.reportException(exception);
60:
61: _renderer.renderPageResponse(page, _response);
62: }
63: }
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