Java tutorial
/** * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved. * * This library is free software; you can redistribute it and/or modify it under * the terms of the GNU Lesser General Public License as published by the Free * Software Foundation; either version 2.1 of the License, or (at your option) * any later version. * * This library is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more * details. */ package com.liferay.portlet.journal.action; import com.liferay.portal.kernel.servlet.SessionErrors; import com.liferay.portal.kernel.util.Constants; import com.liferay.portal.kernel.util.GetterUtil; import com.liferay.portal.kernel.util.ParamUtil; import com.liferay.portal.kernel.util.StringPool; import com.liferay.portal.kernel.util.StringUtil; import com.liferay.portal.kernel.util.Validator; import com.liferay.portal.security.auth.PrincipalException; import com.liferay.portal.service.ServiceContext; import com.liferay.portal.service.ServiceContextFactory; import com.liferay.portal.struts.PortletAction; import com.liferay.portlet.journal.DuplicateFeedIdException; import com.liferay.portlet.journal.FeedContentFieldException; import com.liferay.portlet.journal.FeedIdException; import com.liferay.portlet.journal.FeedNameException; import com.liferay.portlet.journal.FeedTargetLayoutFriendlyUrlException; import com.liferay.portlet.journal.FeedTargetPortletIdException; import com.liferay.portlet.journal.NoSuchFeedException; import com.liferay.portlet.journal.model.JournalFeed; import com.liferay.portlet.journal.service.JournalFeedServiceUtil; import com.liferay.util.RSSUtil; import javax.portlet.ActionRequest; import javax.portlet.ActionResponse; import javax.portlet.PortletConfig; import javax.portlet.RenderRequest; import javax.portlet.RenderResponse; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; /** * @author Raymond Aug */ public class EditFeedAction extends PortletAction { @Override public void processAction(ActionMapping mapping, ActionForm form, PortletConfig portletConfig, ActionRequest actionRequest, ActionResponse actionResponse) throws Exception { String cmd = ParamUtil.getString(actionRequest, Constants.CMD); try { if (cmd.equals(Constants.ADD) || cmd.equals(Constants.UPDATE)) { updateFeed(actionRequest); } else if (cmd.equals(Constants.DELETE)) { deleteFeeds(actionRequest); } sendRedirect(actionRequest, actionResponse); } catch (Exception e) { if (e instanceof NoSuchFeedException || e instanceof PrincipalException) { SessionErrors.add(actionRequest, e.getClass().getName()); setForward(actionRequest, "portlet.journal.error"); } else if (e instanceof DuplicateFeedIdException || e instanceof FeedContentFieldException || e instanceof FeedIdException || e instanceof FeedNameException || e instanceof FeedTargetLayoutFriendlyUrlException || e instanceof FeedTargetPortletIdException) { SessionErrors.add(actionRequest, e.getClass().getName()); } else { throw e; } } } @Override public ActionForward render(ActionMapping mapping, ActionForm form, PortletConfig portletConfig, RenderRequest renderRequest, RenderResponse renderResponse) throws Exception { try { String cmd = ParamUtil.getString(renderRequest, Constants.CMD); if (!cmd.equals(Constants.ADD)) { ActionUtil.getFeed(renderRequest); } } catch (NoSuchFeedException nssfe) { // Let this slide because the user can manually input a feed id for // a new syndicated feed that does not yet exist. } catch (Exception e) { if (e instanceof PrincipalException) { SessionErrors.add(renderRequest, e.getClass().getName()); return mapping.findForward("portlet.journal.error"); } else { throw e; } } return mapping.findForward(getForward(renderRequest, "portlet.journal.edit_feed")); } protected void deleteFeeds(ActionRequest actionRequest) throws Exception { long groupId = ParamUtil.getLong(actionRequest, "groupId"); String[] deleteFeedIds = StringUtil.split(ParamUtil.getString(actionRequest, "deleteFeedIds")); for (int i = 0; i < deleteFeedIds.length; i++) { JournalFeedServiceUtil.deleteFeed(groupId, deleteFeedIds[i]); } } protected void updateFeed(ActionRequest actionRequest) throws Exception { String cmd = ParamUtil.getString(actionRequest, Constants.CMD); long groupId = ParamUtil.getLong(actionRequest, "groupId"); String feedId = ParamUtil.getString(actionRequest, "feedId"); boolean autoFeedId = ParamUtil.getBoolean(actionRequest, "autoFeedId"); String name = ParamUtil.getString(actionRequest, "name"); String description = ParamUtil.getString(actionRequest, "description"); String type = ParamUtil.getString(actionRequest, "type"); String structureId = ParamUtil.getString(actionRequest, "structureId"); String templateId = ParamUtil.getString(actionRequest, "templateId"); String rendererTemplateId = ParamUtil.getString(actionRequest, "rendererTemplateId"); int delta = ParamUtil.getInteger(actionRequest, "delta"); String orderByCol = ParamUtil.getString(actionRequest, "orderByCol"); String orderByType = ParamUtil.getString(actionRequest, "orderByType"); String targetLayoutFriendlyUrl = ParamUtil.getString(actionRequest, "targetLayoutFriendlyUrl"); String targetPortletId = ParamUtil.getString(actionRequest, "targetPortletId"); String contentField = ParamUtil.getString(actionRequest, "contentField"); String feedType = RSSUtil.TYPE_DEFAULT; double feedVersion = RSSUtil.VERSION_DEFAULT; String feedTypeAndVersion = ParamUtil.getString(actionRequest, "feedTypeAndVersion"); if (Validator.isNotNull(feedTypeAndVersion)) { String[] parts = feedTypeAndVersion.split(StringPool.COLON); try { feedType = parts[0]; feedVersion = GetterUtil.getDouble(parts[1]); } catch (Exception e) { } } else { feedType = ParamUtil.getString(actionRequest, "feedType", feedType); feedVersion = ParamUtil.getDouble(actionRequest, "feedVersion", feedVersion); } ServiceContext serviceContext = ServiceContextFactory.getInstance(JournalFeed.class.getName(), actionRequest); if (cmd.equals(Constants.ADD)) { // Add feed JournalFeedServiceUtil.addFeed(groupId, feedId, autoFeedId, name, description, type, structureId, templateId, rendererTemplateId, delta, orderByCol, orderByType, targetLayoutFriendlyUrl, targetPortletId, contentField, feedType, feedVersion, serviceContext); } else { // Update feed JournalFeedServiceUtil.updateFeed(groupId, feedId, name, description, type, structureId, templateId, rendererTemplateId, delta, orderByCol, orderByType, targetLayoutFriendlyUrl, targetPortletId, contentField, feedType, feedVersion, serviceContext); } } }