/*
* Copyright 2002-2013 the original author or authors.
*
* 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 org.springframework.samples.petclinic.web;
import org.springframework.samples.petclinic.model.Pet;
import org.springframework.util.StringUtils;
import org.springframework.validation.Errors;
import org.springframework.validation.Validator;
/**
* <code>Validator</code> for <code>Pet</code> forms.
* <p>
* We're not using Bean Validation annotations here because it is easier to define such validation rule in Java.
* </p>
*
* @author Ken Krebs
* @author Juergen Hoeller
*/
public class PetValidator implements Validator {
@Override
public void validate(Object obj, Errors errors) {
Pet pet = (Pet) obj;
String name = pet.getName();
// name validation
if (!StringUtils.hasLength(name)) {
errors.rejectValue("name", "required", "required");
}
// type validation
if (pet.isNew() && pet.getType() == null) {
errors.rejectValue("type", "required", "required");
}
// birth date validation
if (pet.getBirthDate() == null) {
errors.rejectValue("birthDate", "required", "required");
}
}
/**
* This Validator validates *just* Pet instances
*/
@Override
public boolean supports(Class<?> clazz) {
return Pet.class.isAssignableFrom(clazz);
}
}