IllegalArgumentException: Type cannot be null

Question

I am confronting with an issue and it seems that many people encountered it and probably couldn\'t solve it.

I have the following MYSQL stored procedure. This is jus

Answer 1

Problem seems to be while mapping your results (resulting entity can't be typed).

Try changing:

@Procedure("ResourceType.getResourceTypes")
List getResourceTypes();

to

@Procedure("ResourceType.getResourceTypes")
Object[] getResourceTypes();

and remove the resultClasses in your NamedStoredProcedureQuery.

Hope that helps.