Java tutorial
/** * This Source Code Form is subject to the terms of the Mozilla Public License, * v. 2.0. If a copy of the MPL was not distributed with this file, You can * obtain one at http://mozilla.org/MPL/2.0/. OpenMRS is also distributed under * the terms of the Healthcare Disclaimer located at http://openmrs.org/license. * * Copyright (C) OpenMRS Inc. OpenMRS is a registered trademark and the OpenMRS * graphic logo is a trademark of OpenMRS Inc. */ package org.openmrs.web.controller.concept; import java.util.List; import java.util.Vector; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.openmrs.ConceptDatatype; import org.openmrs.api.APIException; import org.openmrs.api.ConceptService; import org.openmrs.api.context.Context; import org.openmrs.web.WebConstants; import org.springframework.beans.propertyeditors.CustomNumberEditor; import org.springframework.context.support.MessageSourceAccessor; import org.springframework.validation.BindException; import org.springframework.web.bind.ServletRequestDataBinder; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.SimpleFormController; import org.springframework.web.servlet.view.RedirectView; public class ConceptDatatypeListController extends SimpleFormController { /** Logger for this class and subclasses */ protected final Log log = LogFactory.getLog(getClass()); /** * Allows for Integers to be used as values in input tags. Normally, only strings and lists are * expected * * @see org.springframework.web.servlet.mvc.BaseCommandController#initBinder(javax.servlet.http.HttpServletRequest, * org.springframework.web.bind.ServletRequestDataBinder) */ protected void initBinder(HttpServletRequest request, ServletRequestDataBinder binder) throws Exception { super.initBinder(request, binder); binder.registerCustomEditor(java.lang.Integer.class, new CustomNumberEditor(java.lang.Integer.class, true)); } /** * The onSubmit function receives the form/command object that was modified by the input form * and saves it to the db * * @see org.springframework.web.servlet.mvc.SimpleFormController#onSubmit(javax.servlet.http.HttpServletRequest, * javax.servlet.http.HttpServletResponse, java.lang.Object, * org.springframework.validation.BindException) */ protected ModelAndView onSubmit(HttpServletRequest request, HttpServletResponse response, Object obj, BindException errors) throws Exception { HttpSession httpSession = request.getSession(); String view = getFormView(); if (Context.isAuthenticated()) { String[] cdList = request.getParameterValues("conceptDatatypeId"); ConceptService cs = Context.getConceptService(); StringBuilder success = new StringBuilder(""); StringBuilder error = new StringBuilder(); MessageSourceAccessor msa = getMessageSourceAccessor(); String deleted = msa.getMessage("general.deleted"); String notDeleted = msa.getMessage("general.cannot.delete"); if (cdList.length != 0) { log.warn("Deleting concept datatype is not supported"); if (!"".equals(error.toString())) { error.append("<br/>"); } error.append("ConceptDatatype").append(" ").append(notDeleted); } view = getSuccessView(); if (!"".equals(success.toString())) { httpSession.setAttribute(WebConstants.OPENMRS_MSG_ATTR, success.toString()); } if (!"".equals(error.toString())) { httpSession.setAttribute(WebConstants.OPENMRS_ERROR_ATTR, error.toString()); } } return new ModelAndView(new RedirectView(view)); } /** * This is called prior to displaying a form for the first time. It tells Spring the * form/command object to load into the request * * @see org.springframework.web.servlet.mvc.AbstractFormController#formBackingObject(javax.servlet.http.HttpServletRequest) */ protected Object formBackingObject(HttpServletRequest request) throws ServletException { //default empty Object List<ConceptDatatype> cdList = new Vector<ConceptDatatype>(); //only fill the Object is the user has authenticated properly if (Context.isAuthenticated()) { ConceptService cs = Context.getConceptService(); cdList = cs.getAllConceptDatatypes(); } return cdList; } }