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.invitation.action; import com.liferay.portal.kernel.portlet.DefaultConfigurationAction; import com.liferay.portal.kernel.servlet.SessionErrors; import com.liferay.portal.kernel.util.Validator; import javax.portlet.ActionRequest; import javax.portlet.ActionResponse; import javax.portlet.PortletConfig; /** * @author Brian Wing Shun Chan */ public class ConfigurationActionImpl extends DefaultConfigurationAction { @Override public void processAction(PortletConfig portletConfig, ActionRequest actionRequest, ActionResponse actionResponse) throws Exception { validateEmailMessage(actionRequest); super.processAction(portletConfig, actionRequest, actionResponse); } protected void validateEmailMessage(ActionRequest actionRequest) { String emailMessageSubject = getParameter(actionRequest, "emailMessageSubject"); String emailMessageBody = getParameter(actionRequest, "emailMessageBody"); if (Validator.isNull(emailMessageSubject)) { SessionErrors.add(actionRequest, "emailMessageSubject"); } else if (Validator.isNull(emailMessageBody)) { SessionErrors.add(actionRequest, "emailMessageBody"); } } }