I have a spring boot project that has a CrudRepository, an Entity and a Controller. I am basically trying to persist an entity based on the data passed to the Controller.
To do this, I am using spring-boot-starter-jpa
. My Entity is annotated with JSR-303 annotations, which are checked in the controller before the data gets passed to the CrudRepository for persistence.
Controller method:
@RequestMapping(value = "users", method = { RequestMethod.POST })
public SuccessfulResponse<User> addUser(@Valid @RequestBody User user, BindingResult validation) {
if (validation.hasErrors()) {
throw new ValidationException(validation);
}
User saved = this.users.save(user);
return new SuccessfulResponse<User>(saved);
}
Entity:
@Entity /* JPA */
public class User {
@Id /* JPA */
@Column(name="email_address", nullable=false, length=255) /* JPA */
@UserUnique
private String emailAddress;
}
The cause of my issues is the UserUnique
annotation. Its validator looks like this:
public class UserUniqueValidator implements ConstraintValidator<UserUnique, String> {
private UserRepository users;
@Autowired
public UserUniqueValidator(UserRepository users) {
this.users = users;
}
@Override
public void initialize(UserUnique annotation) {}
@Override
public boolean isValid(String value, ConstraintValidatorContext context) {
return users.findOne(value) == null;
}
}
What seems to be happening is, the validation is getting run twice. Once in the controller via the @Valid
annotation, and once when Hibernate tries to persist the object. However, when Hibernate tries to persist the object, it throws:
javax.validation.ValidationException: HV000064: Unable to instantiate ConstraintValidator: class test.UserUniqueValidator`
This seems to be because its not spring-aware and cant inject the dependency into the constructor. So, what I want to do is disable Hibernate validation completely (as its redundant and already happening in the controller).
There seems to be a property called javax.persistence.validation.mode
which you can set to none
. However, I cant for the life of me figure out where to set it in a code-based configuration.
I realise there are questions like JSR-303 dependency injection and Hibernate but these are all using xml config and manually configuring parts of the persistence layer.
What I want to do is "post-configure" the required parts of the persistence layer that Spring Boot creates for me because if I define my own then I am no longer leveraging Spring Boot's auto configuration. Can anyone help me determine if 1) this is possible and 2) which parts do I need to configure and how?
Thanks!
As [M. Deinum] mentioned in a comment on my original post, the solution is to set:
spring.jpa.properties.javax.persistence.validation.mode=none
In the application.properties
file.
Additionally, this behaviour is described here (its easy to miss because no example is provided).