StudentCtl.java
package com.sunilos.proj0.ctl;
import java.util.Locale;
import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.MessageSource;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import com.sunilos.proj0.dto.CollegeDTO;
import com.sunilos.proj0.dto.StudentDTO;
import com.sunilos.proj0.form.StudentForm;
import com.sunilos.proj0.service.CollegeServiceInt;
import com.sunilos.proj0.service.StudentServiceInt;
/**
* Contains navigation logics for Student and Student List Usecases.
*
* @author SunilOS
* @version 1.0
* @Copyright (c) SunilOS
*/
@Controller
@RequestMapping(value = "/ctl/Student")
public class StudentCtl extends BaseCtl {
/**
* Logger object
*/
private static Logger log = Logger.getLogger(StudentCtl.class);
@Autowired
StudentServiceInt service;
@Autowired
CollegeServiceInt collegeService;
/**
* i18n Message source
*/
@Autowired
private MessageSource messageSource;
/**
* Preload College List
*/
@Override
public void preload(Model model) {
model.addAttribute("collegeList", collegeService.search(null));
}
/**
* Displays Student View.
*
* @param id
* @param form
* @param model
* @return
*/
@RequestMapping(method = RequestMethod.GET)
public String display(@RequestParam(required = false) Long id,
@ModelAttribute("form") StudentForm form, Model model) {
if (id != null && id > 0) {
form.populate(service.findByPK(id));
}
return "Student";
}
/**
* Submits Student data.
*
* @param locale
* @param operation
* @param form
* @param bindingResult
* @param model
* @param session
* @return
*/
@RequestMapping(method = RequestMethod.POST)
public String submit(Locale locale, @RequestParam String operation,
@ModelAttribute("form") @Valid StudentForm form,
BindingResult bindingResult, Model model, HttpSession session) {
log.debug("operation " + form.getOperation());
if (bindingResult.hasErrors()) {
return "Student";
}
try {
if (OP_SAVE.equalsIgnoreCase(operation)) {
StudentDTO dto = (StudentDTO) form.getDto();
CollegeDTO cdto = collegeService.findByPK(form.getCollegeId());
dto.setCollegeName(cdto.getName());
if (dto.getId() > 0) {
service.update(dto);
} else {
Long id = service.add(dto);
form.setId(id);
}
String msg = messageSource.getMessage("message.success", null,
locale);
model.addAttribute("success", msg);
} else if (OP_DELETE.equalsIgnoreCase(operation)) {
service.delete(form.getId());
String msg = messageSource.getMessage("message.success", null,
locale);
model.addAttribute("success", msg);
return "redirect:Student/search";
}
} catch (Exception e) {
model.addAttribute("error", "Critical Issue " + e.getMessage());
}
return "Student";
}
/**
* Displays Student List view.
*
* @param form
* @param model
* @return
*/
@RequestMapping(value = "/search", method = RequestMethod.GET)
public String searchList(@ModelAttribute("form") StudentForm form,
Model model) {
model.addAttribute("list",
service.search(null, form.getPageNo(), form.getPageSize()));
return "StudentList";
}
/**
* Submits Student List data.
*
* @param locale
* @param form
* @param operation
* @param model
* @return
* @throws Exception
*/
@RequestMapping(value = "/search", method = RequestMethod.POST)
public String searchList(Locale locale,
@ModelAttribute("form") StudentForm form,
@RequestParam(required = false) String operation, Model model)
throws Exception {
log.debug("in searchList method");
// Calculate next page number
int pageNo = form.getPageNo();
if (OP_NEXT.equals(operation)) {
pageNo++;
} else if (OP_PREVIOUS.equals(operation)) {
pageNo--;
}
pageNo = (pageNo < 1) ? 1 : pageNo;
form.setPageNo(pageNo);
if (OP_DELETE.equals(operation) && form.getIds() != null) {
for (long id : form.getIds()) {
service.delete(id);
}
String msg = messageSource.getMessage("message.success", null,
locale);
model.addAttribute("success", msg);
}
// Get search attributes
StudentDTO dto = (StudentDTO) form.getDto();
model.addAttribute("list",
service.search(dto, pageNo, form.getPageSize()));
return "StudentList";
}
}