001 // Copyright 2005 The Apache Software Foundation 002 // 003 // Licensed under the Apache License, Version 2.0 (the "License"); 004 // you may not use this file except in compliance with the License. 005 // You may obtain a copy of the License at 006 // 007 // http://www.apache.org/licenses/LICENSE-2.0 008 // 009 // Unless required by applicable law or agreed to in writing, software 010 // distributed under the License is distributed on an "AS IS" BASIS, 011 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012 // See the License for the specific language governing permissions and 013 // limitations under the License. 014 015 package org.apache.tapestry.portlet; 016 017 import javax.portlet.ActionRequest; 018 import javax.portlet.ActionResponse; 019 020 import org.apache.hivemind.ApplicationRuntimeException; 021 import org.apache.tapestry.IRequestCycle; 022 import org.apache.tapestry.StaleSessionException; 023 import org.apache.tapestry.error.RequestExceptionReporter; 024 import org.apache.tapestry.error.StaleSessionExceptionPresenter; 025 import org.apache.tapestry.services.ServiceConstants; 026 027 /** 028 * @author Howard M. Lewis Ship 029 * @since 4.0 030 */ 031 public class PortletStaleSessionExceptionPresenter implements StaleSessionExceptionPresenter 032 { 033 private PortletRequestGlobals _globals; 034 035 private RequestExceptionReporter _requestExceptionReporter; 036 037 public void presentStaleSessionException(IRequestCycle cycle, StaleSessionException cause) 038 { 039 try 040 { 041 String markup = PortletMessages.staleSession(); 042 043 ActionRequest request = _globals.getActionRequest(); 044 045 request.getPortletSession(true).setAttribute( 046 PortletConstants.PORTLET_EXCEPTION_MARKUP_ATTRIBUTE, 047 markup); 048 049 ActionResponse response = _globals.getActionResponse(); 050 051 response.setRenderParameter( 052 ServiceConstants.SERVICE, 053 PortletConstants.EXCEPTION_SERVICE); 054 } 055 catch (Exception ex) 056 { 057 // Worst case scenario. The exception page itself is broken, leaving 058 // us with no option but to write the cause to the output. 059 060 // Also, write the exception thrown when redendering the exception 061 // page, so that can get fixed as well. 062 063 _requestExceptionReporter.reportRequestException(PortletMessages 064 .errorReportingException(ex), ex); 065 066 // And throw the exception. 067 068 throw new ApplicationRuntimeException(ex.getMessage(), ex); 069 } 070 } 071 072 public void setGlobals(PortletRequestGlobals globals) 073 { 074 _globals = globals; 075 } 076 077 public void setRequestExceptionReporter(RequestExceptionReporter requestExceptionReporter) 078 { 079 _requestExceptionReporter = requestExceptionReporter; 080 } 081 }