package org.springframework.samples.petclinic.web;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.propertyeditors.CustomDateEditor;
import org.springframework.samples.petclinic.Clinic;
import org.springframework.validation.BindException;
import org.springframework.web.bind.ServletRequestDataBinder;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.SimpleFormController;
/**
* JavaBean abstract base class for petclinic-aware form controllers.
* Provides convenience methods for subclasses.
*
* @author Ken Krebs
*/
public abstract class AbstractClinicForm extends SimpleFormController {
private Clinic clinic;
public void setClinic(Clinic clinic) {
this.clinic = clinic;
}
protected Clinic getClinic() {
return clinic;
}
public void afterPropertiesSet() {
if (this.clinic == null) {
throw new IllegalArgumentException("'clinic' is required");
}
}
/**
* Set up a custom property editor for the application's date format.
*/
protected void initBinder(HttpServletRequest request, ServletRequestDataBinder binder) {
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
dateFormat.setLenient(false);
binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, false));
}
/**
* Method disallows duplicate form submission.
* Typically used to prevent duplicate insertion of entities
* into the datastore. Shows a new form with an error message.
*/
protected ModelAndView disallowDuplicateFormSubmission(HttpServletRequest request, HttpServletResponse response)
throws Exception {
BindException errors = getErrorsForNewForm(request);
errors.reject("duplicateFormSubmission", "Duplicate form submission");
return showForm(request, response, errors);
}
}