001    /**
002     * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portlet.messageboards.action;
016    
017    import com.liferay.portal.kernel.servlet.SessionErrors;
018    import com.liferay.portal.security.auth.PrincipalException;
019    import com.liferay.portal.struts.PortletAction;
020    import com.liferay.portlet.messageboards.BannedUserException;
021    import com.liferay.portlet.messageboards.NoSuchCategoryException;
022    
023    import javax.portlet.PortletConfig;
024    import javax.portlet.RenderRequest;
025    import javax.portlet.RenderResponse;
026    
027    import org.apache.struts.action.ActionForm;
028    import org.apache.struts.action.ActionForward;
029    import org.apache.struts.action.ActionMapping;
030    
031    /**
032     * @author Brian Wing Shun Chan
033     */
034    public class ViewAction extends PortletAction {
035    
036            public ActionForward render(
037                            ActionMapping mapping, ActionForm form, PortletConfig portletConfig,
038                            RenderRequest renderRequest, RenderResponse renderResponse)
039                    throws Exception {
040    
041                    try {
042                            ActionUtil.getCategory(renderRequest);
043                    }
044                    catch (Exception e) {
045                            if (e instanceof BannedUserException ||
046                                    e instanceof NoSuchCategoryException ||
047                                    e instanceof PrincipalException) {
048    
049                                    SessionErrors.add(renderRequest, e.getClass().getName());
050    
051                                    return mapping.findForward("portlet.message_boards.error");
052                            }
053                            else {
054                                    throw e;
055                            }
056                    }
057    
058                    return mapping.findForward("portlet.message_boards.view");
059            }
060    
061    }