Java tutorial
/** * The contents of this file are subject to the Mozilla Public License * Version 1.1 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the * License for the specific language governing rights and limitations under * the License. * * The Original Code is OpenELIS code. * * Copyright (C) The Minnesota Department of Health. All Rights Reserved. */ package us.mn.state.health.lims.county.action; import java.util.ArrayList; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.beanutils.PropertyUtils; import org.apache.struts.Globals; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import org.apache.struts.action.ActionMessages; import us.mn.state.health.lims.common.action.BaseAction; import us.mn.state.health.lims.common.action.BaseActionForm; import us.mn.state.health.lims.common.exception.LIMSDuplicateRecordException; import us.mn.state.health.lims.common.exception.LIMSRuntimeException; import us.mn.state.health.lims.common.util.StringUtil; import us.mn.state.health.lims.common.util.resources.ResourceLocator; import us.mn.state.health.lims.common.util.validator.ActionError; import us.mn.state.health.lims.common.log.LogEvent; import us.mn.state.health.lims.county.dao.CountyDAO; import us.mn.state.health.lims.county.daoimpl.CountyDAOImpl; import us.mn.state.health.lims.county.valueholder.County; import us.mn.state.health.lims.hibernate.HibernateUtil; import us.mn.state.health.lims.login.valueholder.UserSessionData; import us.mn.state.health.lims.region.dao.RegionDAO; import us.mn.state.health.lims.region.daoimpl.RegionDAOImpl; import us.mn.state.health.lims.region.valueholder.Region; /** * @author diane benz * * To change this generated comment edit the template variable "typecomment": * Window>Preferences>Java>Templates. To enable and disable the creation of type * comments go to Window>Preferences>Java>Code Generation. */ public class CountyUpdateAction extends BaseAction { private boolean isNew = false; protected ActionForward performAction(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { // The first job is to determine if we are coming to this action with an // ID parameter in the request. If there is no parameter, we are // creating a new County. // If there is a parameter present, we should bring up an existing // County to edit. String forward = FWD_SUCCESS; request.setAttribute(ALLOW_EDITS_KEY, "true"); request.setAttribute(PREVIOUS_DISABLED, "false"); request.setAttribute(NEXT_DISABLED, "false"); String id = request.getParameter(ID); if (StringUtil.isNullorNill(id) || "0".equals(id)) { isNew = true; } else { isNew = false; } BaseActionForm dynaForm = (BaseActionForm) form; // server-side validation (validation.xml) ActionMessages errors = dynaForm.validate(mapping, request); if (errors != null && errors.size() > 0) { saveErrors(request, errors); // since we forward to jsp - not Action we don't need to repopulate // the lists here return mapping.findForward(FWD_FAIL); } String start = (String) request.getParameter("startingRecNo"); String direction = (String) request.getParameter("direction"); County county = new County(); //get sysUserId from login module UserSessionData usd = (UserSessionData) request.getSession().getAttribute(USER_SESSION_DATA); String sysUserId = String.valueOf(usd.getSystemUserId()); county.setSysUserId(sysUserId); org.hibernate.Transaction tx = HibernateUtil.getSession().beginTransaction(); String regionId = (String) dynaForm.get("regionId"); List regions = new ArrayList(); if (dynaForm.get("regions") != null) { regions = (List) dynaForm.get("regions"); } else { RegionDAO regionDAO = new RegionDAOImpl(); regions = regionDAO.getAllRegions(); } Region region = null; for (int i = 0; i < regions.size(); i++) { Region reg = (Region) regions.get(i); if (reg.getId().equals(regionId)) { region = reg; break; } } // populate valueholder from form PropertyUtils.copyProperties(county, dynaForm); // set the region county.setRegion(region); try { CountyDAO countyDAO = new CountyDAOImpl(); if (!isNew) { // UPDATE countyDAO.updateData(county); } else { // INSERT countyDAO.insertData(county); } tx.commit(); } catch (LIMSRuntimeException lre) { //bugzilla 2154 LogEvent.logError("CountyUpdateAction", "performAction()", lre.toString()); tx.rollback(); errors = new ActionMessages(); //bugzilla 1482 java.util.Locale locale = (java.util.Locale) request.getSession() .getAttribute("org.apache.struts.action.LOCALE"); ActionError error = null; if (lre.getException() instanceof org.hibernate.StaleObjectStateException) { // how can I get popup instead of struts error at the top of // page? // ActionMessages errors = dynaForm.validate(mapping, request); error = new ActionError("errors.OptimisticLockException", null, null); } else { // bugzilla 1482 if (lre.getException() instanceof LIMSDuplicateRecordException) { String messageKey = "county.county"; String msg = ResourceLocator.getInstance().getMessageResources().getMessage(locale, messageKey); error = new ActionError("errors.DuplicateRecord", msg, null); } else { error = new ActionError("errors.UpdateException", null, null); } } errors.add(ActionMessages.GLOBAL_MESSAGE, error); saveErrors(request, errors); request.setAttribute(Globals.ERROR_KEY, errors); //bugzilla 1485: allow change and try updating again (enable save button) //request.setAttribute(IActionConstants.ALLOW_EDITS_KEY, "false"); // disable previous and next request.setAttribute(PREVIOUS_DISABLED, "true"); request.setAttribute(NEXT_DISABLED, "true"); forward = FWD_FAIL; } finally { HibernateUtil.closeSession(); } if (forward.equals(FWD_FAIL)) return mapping.findForward(forward); // initialize the form dynaForm.initialize(mapping); // repopulate the form from valueholder PropertyUtils.copyProperties(dynaForm, county); // need to repopulate in case of FWD_FAIL? PropertyUtils.setProperty(dynaForm, "regions", regions); if ("true".equalsIgnoreCase(request.getParameter("close"))) { forward = FWD_CLOSE; } if (county.getId() != null && !county.getId().equals("0")) { request.setAttribute(ID, county.getId()); } //bugzilla 1400 if (isNew) forward = FWD_SUCCESS_INSERT; //bugzilla 1467 added direction for redirect to NextPreviousAction return getForward(mapping.findForward(forward), id, start, direction); } protected String getPageTitleKey() { if (isNew) { return "county.add.title"; } else { return "county.edit.title"; } } protected String getPageSubtitleKey() { if (isNew) { return "county.add.title"; } else { return "county.edit.title"; } } }