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 015package org.apache.tapestry.portlet; 016 017import java.io.IOException; 018 019import javax.portlet.ActionRequest; 020import javax.portlet.ActionResponse; 021 022import org.apache.tapestry.IRequestCycle; 023import org.apache.tapestry.StaleLinkException; 024import org.apache.tapestry.error.StaleLinkExceptionPresenter; 025import org.apache.tapestry.services.ServiceConstants; 026 027/** 028 * Implementation of {@link org.apache.tapestry.error.StaleLinkExceptionPresenter} for Portlets. 029 * 030 * @author Howard M. Lewis Ship 031 * @since 4.0 032 */ 033public class PortletStaleLinkExceptionPresenter implements StaleLinkExceptionPresenter 034{ 035 private PortletRequestGlobals _globals; 036 037 public void presentStaleLinkException(IRequestCycle cycle, StaleLinkException cause) 038 throws IOException 039 { 040 ActionRequest request = _globals.getActionRequest(); 041 042 request.getPortletSession(true).setAttribute( 043 PortletConstants.PORTLET_EXCEPTION_MARKUP_ATTRIBUTE, 044 cause.getMessage()); 045 046 ActionResponse response = _globals.getActionResponse(); 047 048 response.setRenderParameter(ServiceConstants.SERVICE, PortletConstants.EXCEPTION_SERVICE); 049 } 050 051 public void setGlobals(PortletRequestGlobals globals) 052 { 053 _globals = globals; 054 } 055}