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.bean.BeanParamUtil; import com.liferay.portal.kernel.exception.PortalException; import com.liferay.portal.kernel.exception.SystemException; import com.liferay.portal.kernel.json.JSONArray; import com.liferay.portal.kernel.json.JSONFactoryUtil; import com.liferay.portal.kernel.json.JSONObject; import com.liferay.portal.kernel.servlet.SessionErrors; import com.liferay.portal.kernel.util.Constants; import com.liferay.portal.kernel.util.ParamUtil; import com.liferay.portal.security.auth.PrincipalException; 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.model.MDRRuleGroupInstance; import com.liferay.portlet.mobiledevicerules.service.MDRRuleGroupInstanceLocalServiceUtil; import com.liferay.portlet.mobiledevicerules.service.MDRRuleGroupInstanceServiceUtil; import com.liferay.portlet.mobiledevicerules.service.MDRRuleGroupLocalServiceUtil; 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 Edward Han */ public class EditRuleGroupInstanceAction 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.DELETE)) { deleteRuleGroupInstance(actionRequest); } else if (cmd.equals(Constants.UPDATE)) { updateRuleGroupInstancesPriorities(actionRequest); } 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 ruleGroupInstanceId = ParamUtil.getLong(renderRequest, "ruleGroupInstanceId"); MDRRuleGroupInstance ruleGroupInstance = MDRRuleGroupInstanceLocalServiceUtil .fetchRuleGroupInstance(ruleGroupInstanceId); renderRequest.setAttribute(WebKeys.MOBILE_DEVICE_RULES_RULE_INSTANCE, ruleGroupInstance); long ruleGroupId = BeanParamUtil.getLong(ruleGroupInstance, renderRequest, "ruleGroupId"); MDRRuleGroup ruleGroup = MDRRuleGroupLocalServiceUtil.fetchRuleGroup(ruleGroupId); renderRequest.setAttribute(WebKeys.MOBILE_DEVICE_RULES_RULE_GROUP, ruleGroup); return mapping.findForward("portlet.mobile_device_rules.edit_rule_group_instance_priorities"); } protected void deleteRuleGroupInstance(ActionRequest actionRequest) throws PortalException, SystemException { long ruleGroupInstanceId = ParamUtil.getLong(actionRequest, "ruleGroupInstanceId"); MDRRuleGroupInstanceServiceUtil.deleteRuleGroupInstance(ruleGroupInstanceId); } protected void updateRuleGroupInstancesPriorities(ActionRequest actionRequest) throws PortalException, SystemException { String ruleGroupsInstancesJSON = ParamUtil.getString(actionRequest, "ruleGroupsInstancesJSON"); JSONArray ruleGroupsInstancesJSONArray = JSONFactoryUtil.createJSONArray(ruleGroupsInstancesJSON); for (int i = 0; i < ruleGroupsInstancesJSONArray.length(); i++) { JSONObject ruleGroupInstanceJSONObject = ruleGroupsInstancesJSONArray.getJSONObject(i); long ruleGroupInstanceId = ruleGroupInstanceJSONObject.getLong("ruleGroupInstanceId"); int priority = ruleGroupInstanceJSONObject.getInt("priority"); MDRRuleGroupInstanceServiceUtil.updateRuleGroupInstance(ruleGroupInstanceId, priority); } } }