Question

i was wondering if it’s possible to make custom hibernate validation annotation
that will check in the database if the email exist or not (call dao method and return true if the email exist)

so i can do something like:

    @NotBlank(message = "email is required")
@Email(message = "{invalid.email}")
    @EmailExist(message = "{email.exist}")
@Column(name = "email", length = 155, nullable = false)       
private String email;

please advise with a sample if possible, thanks in advance.

Answer 1

Yes it should be possible, you just need to implement your custom annotation validator implementation.

If you use real AspectJ and annotate the class with @Configurable then you an use @Inject like in every other spring bean.

@See:

• Spring Configurable: Spring Reference Chapter 7.8.1 Using AspectJ to dependency inject domain objects with Spring
• JSR-000303 Bean Validation 1.0 Final Release Specification Chapter 2 Constraint Definition
• Example of an custom Validation