Java tutorial
/* Copyright 2010 Google Inc. * * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License */ package com.google.ie.web.controller; import com.google.ie.business.domain.Audit; import com.google.ie.business.service.AuditService; import com.google.ie.dto.ViewStatus; import org.apache.log4j.Logger; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.propertyeditors.CustomBooleanEditor; import org.springframework.beans.propertyeditors.CustomDateEditor; import org.springframework.beans.propertyeditors.StringTrimmerEditor; import org.springframework.stereotype.Controller; import org.springframework.validation.BindingResult; import org.springframework.web.bind.WebDataBinder; import org.springframework.web.bind.annotation.InitBinder; import org.springframework.web.bind.annotation.ModelAttribute; import org.springframework.web.bind.annotation.RequestMapping; import java.text.DateFormat; import java.util.Date; import java.util.Map; /** * A controller that handles request for Auditing.It store information regarding * all the update operation. * * @author asirohi * */ @Controller public class AuditController { /* Logger for logging system */ private static Logger log = Logger.getLogger(AuditController.class); /* Interface of audit service */ @Autowired private AuditService auditService; /** * Handles the request for saving Audit entity. * This request is initiated by TaskQueue for auditing the user actions on * the entity. */ @RequestMapping("/audits/save") public String saveAudit(@ModelAttribute Audit audit, BindingResult result, Map<String, Object> model) { ViewStatus viewstStatus = new ViewStatus(); if (result.hasErrors()) { log.warn("Audit object has " + result.getErrorCount() + " validation errors"); viewstStatus.setStatus(WebConstants.ERROR); viewstStatus.addMessage(WebConstants.ERROR, "Audit object has validation errors"); } else { auditService.saveAudit(audit); viewstStatus.setStatus(WebConstants.SUCCESS); viewstStatus.addMessage(WebConstants.SUCCESS, "Auditing is successfully done."); } model.put(WebConstants.AUDIT, viewstStatus); return "queue/queue"; } /** * Register custom binders for Spring. Needed to run on app engine * * @param binder * @param request */ @InitBinder public void initBinder(WebDataBinder binder) { binder.registerCustomEditor(Boolean.class, new CustomBooleanEditor(true)); binder.registerCustomEditor(String.class, new StringTrimmerEditor(true)); binder.registerCustomEditor(Date.class, new CustomDateEditor(DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.FULL), true)); } /** * Getter for Audit Service. * * @return the auditService */ public AuditService getAuditService() { return auditService; } /** * Setter for audit service. * * @param auditService the auditService to set */ public void setAuditService(AuditService auditService) { this.auditService = auditService; } }