/*

  * Copyright 2007 The Kuali Foundation

  *

  * Licensed under the Educational Community License, Version 1.0 (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.opensource.org/licenses/ecl1.php

  *

  * 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 org.kuali.rice.krad.web.spring.controller;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

 import org.kuali.rice.core.util.RiceKeyConstants;

 import org.kuali.rice.krad.inquiry.Inquirable;

 import org.kuali.rice.krad.util.GlobalVariables;

 import org.kuali.rice.krad.util.KRADConstants;

 import org.kuali.rice.krad.web.spring.form.InquiryForm;

 import org.kuali.rice.krad.web.spring.form.UifFormBase;

 import org.springframework.stereotype.Controller;

 import org.springframework.validation.BindingResult;

 import org.springframework.web.bind.annotation.ModelAttribute;

 import org.springframework.web.bind.annotation.RequestMapping;

 import org.springframework.web.servlet.ModelAndView;

 /**

  * This class is the handler for inquiries of business objects.

  * 

  * @author Kuali Rice Team (rice.collab@kuali.org)

  */

 @Controller

 @RequestMapping(value = "/inquiry")

 public class InquiryController extends UifControllerBase {

         private static final org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(InquiryController.class);

         @Override

     protected InquiryForm createInitialForm(HttpServletRequest request) {

         return new InquiryForm();

     }

     @RequestMapping(params = "methodToCall=start")

     @Override

         public ModelAndView start(@ModelAttribute("KualiForm") UifFormBase form, BindingResult result,

                         HttpServletRequest request, HttpServletResponse response) {

         InquiryForm inquiryForm = (InquiryForm) form;

                 return continueWithInquiry(inquiryForm, result, request, response);

         }

         /**

          * @param result

          * @param response

          */

         @RequestMapping(params = "methodToCall=continueWithInquiry")

         public ModelAndView continueWithInquiry(@ModelAttribute("KualiForm") InquiryForm inquiryForm, BindingResult result,

                         HttpServletRequest request, HttpServletResponse response) {

                 Object bo = retrieveBOFromInquirable(inquiryForm);

                 checkBO(bo);

                 inquiryForm.setBo(bo);

                 return getUIFModelAndView(inquiryForm);

         }

         /**

          * throws an exception if BO fails the check.

          * 

          * @param bo

          *            the BusinessObject to check.

          * @throws UnsupportedOperationException

          *             if BO is null & no messages have been generated.

          */

         private void checkBO(Object bo) {

                 if (bo == null && GlobalVariables.getMessageMap().hasNoMessages()) {

                         throw new UnsupportedOperationException("The record you have inquired on does not exist.");

                 }

         }

         protected Object retrieveBOFromInquirable(InquiryForm inquiryForm) {

                 Inquirable kualiInquirable = inquiryForm.getInquirable();

                 // retrieve the business object

                 Object  inquiryObject = kualiInquirable.getDataObject(inquiryForm.retrieveInquiryDecryptedPrimaryKeys());

                 if (inquiryObject == null) {

                         LOG.error("No records found in inquiry action.");

                         GlobalVariables.getMessageMap().putError(KRADConstants.GLOBAL_ERRORS, RiceKeyConstants.ERROR_INQUIRY);

                 }

                 return inquiryObject;

         }

 }