Hi,

I have a simple example where I need to define a constraint on a field which is an enumeration type. Basically, I want to make sure that this enumeration type field has a specific value.

How can I achieve that? I'm using the programmatic API but I didn't find anything specific to enumeration types.

Is it possible and if yes how ?

Regards,
BQ.

PS: Here is what I have:

public enum ProductStatus {
active,
inactive
}

public class Product {
ProductStatus status;
}

And the constraint I'm trying to define:
constraintMapping.type(Product.class).property("status", ElementType.FIELD).constraint( ??? );

Where ??? could be for instance:

new ValidLiteralDef(ProductStatus.class, ProductStatus.inactive);

Hey,

What you want to achieve is not possible due to limitations of the Java annotation system. In particular one can't have an annotation member which takes any enumeration value (Enum<?>), one can only define annotation members which accept one specific enumeration type.

As the programmatic API is resembling the possiblities of annotation-based constraint declaration, the same limitation applies there. So you'd have to define a custom constraint annotation type for this. The reference guide disscusses in [1] in detail this particular case of creating a constraint based on an enumeration.

You could then declare constraints of that type via the API (see [2] for more details):



Hth,

--Gunnar

[1] http://docs.jboss.org/hibernate/stable/validator/reference/en-US/html_single/#validator-customconstraints-simple
[2] http://docs.jboss.org/hibernate/stable/validator/reference/en-US/html_single/#section-programmatic-api

Thanks