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.mobiledevicerules.action; import com.liferay.portal.kernel.portlet.LiferayPortletResponse; import com.liferay.portal.kernel.servlet.SessionErrors; import com.liferay.portal.kernel.util.Constants; import com.liferay.portal.kernel.util.LocalizationUtil; import com.liferay.portal.kernel.util.ParamUtil; 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.portal.util.WebKeys; import com.liferay.portlet.mobiledevicerules.NoSuchRuleGroupException; import com.liferay.portlet.mobiledevicerules.model.MDRRuleGroup; import com.liferay.portlet.mobiledevicerules.service.MDRRuleGroupServiceUtil; import java.util.Locale; import java.util.Map; import javax.portlet.ActionRequest; import javax.portlet.ActionResponse; import javax.portlet.PortletConfig; import javax.portlet.PortletURL; 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 Edward Han */ public class EditRuleGroupAction 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 { MDRRuleGroup ruleGroup = null; if (cmd.equals(Constants.ADD) || cmd.equals(Constants.UPDATE)) { ruleGroup = updateRuleGroup(actionRequest); } else if (cmd.equals(Constants.DELETE)) { deleteRuleGroup(actionRequest); } else if (cmd.equals(Constants.COPY)) { ruleGroup = copyRuleGroup(actionRequest); } if (cmd.equals(Constants.ADD) || cmd.equals(Constants.COPY)) { String redirect = getRedirect(actionRequest, actionResponse, ruleGroup); sendRedirect(actionRequest, actionResponse, redirect); } else { sendRedirect(actionRequest, actionResponse); } } catch (Exception e) { if (e instanceof PrincipalException) { SessionErrors.add(actionRequest, e.getClass().getName()); setForward(actionRequest, "portlet.mobile_device_rules.error"); } else if (e instanceof NoSuchRuleGroupException) { 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 { long ruleGroupId = ParamUtil.getLong(renderRequest, "ruleGroupId"); MDRRuleGroup ruleGroup = MDRRuleGroupServiceUtil.fetchRuleGroup(ruleGroupId); renderRequest.setAttribute(WebKeys.MOBILE_DEVICE_RULES_RULE_GROUP, ruleGroup); return mapping.findForward("portlet.mobile_device_rules.edit_rule_group"); } protected MDRRuleGroup copyRuleGroup(ActionRequest actionRequest) throws Exception { long ruleGroupId = ParamUtil.getLong(actionRequest, "ruleGroupId"); long groupId = ParamUtil.getLong(actionRequest, "groupId"); ServiceContext serviceContext = ServiceContextFactory.getInstance(actionRequest); return MDRRuleGroupServiceUtil.copyRuleGroup(ruleGroupId, groupId, serviceContext); } protected void deleteRuleGroup(ActionRequest actionRequest) throws Exception { long ruleGroupId = ParamUtil.getLong(actionRequest, "ruleGroupId"); MDRRuleGroupServiceUtil.deleteRuleGroup(ruleGroupId); } protected String getRedirect(ActionRequest actionRequest, ActionResponse actionResponse, MDRRuleGroup ruleGroup) { LiferayPortletResponse liferayPortletResponse = (LiferayPortletResponse) actionResponse; PortletURL portletURL = liferayPortletResponse.createRenderURL(); portletURL.setParameter("struts_action", "/mobile_device_rules/edit_rule_group"); String redirect = ParamUtil.getString(actionRequest, "redirect"); portletURL.setParameter("redirect", redirect); portletURL.setParameter("ruleGroupId", String.valueOf(ruleGroup.getRuleGroupId())); return portletURL.toString(); } protected MDRRuleGroup updateRuleGroup(ActionRequest actionRequest) throws Exception { long ruleGroupId = ParamUtil.getLong(actionRequest, "ruleGroupId"); long groupId = ParamUtil.getLong(actionRequest, "groupId"); Map<Locale, String> nameMap = LocalizationUtil.getLocalizationMap(actionRequest, "name"); Map<Locale, String> descriptionMap = LocalizationUtil.getLocalizationMap(actionRequest, "description"); ServiceContext serviceContext = ServiceContextFactory.getInstance(actionRequest); MDRRuleGroup ruleGroup = null; if (ruleGroupId <= 0) { ruleGroup = MDRRuleGroupServiceUtil.addRuleGroup(groupId, nameMap, descriptionMap, serviceContext); } else { ruleGroup = MDRRuleGroupServiceUtil.updateRuleGroup(ruleGroupId, nameMap, descriptionMap, serviceContext); } return ruleGroup; } }