spring-boot-realworld-examp.../src/main/java/io/spring/application/user/DuplicatedEmailValidator.java
2021-03-16 17:17:06 +08:00

18 lines
597 B
Java

package io.spring.application.user;
import io.spring.core.user.UserRepository;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import org.springframework.beans.factory.annotation.Autowired;
public class DuplicatedEmailValidator
implements ConstraintValidator<DuplicatedEmailConstraint, String> {
@Autowired private UserRepository userRepository;
@Override
public boolean isValid(String value, ConstraintValidatorContext context) {
return (value == null || value.isEmpty()) || !userRepository.findByEmail(value).isPresent();
}
}