Following HHH-12124, this is a further specification of the problem, on a higher level.

I think that for each Persistence Class (annotated with @Entity, @Embeddable, ...) there should be one (and only one) ManagedType to be retrieved from Metamodel (itself, or retrived by Attribute types).

Actually, this is true only for Entity classes.

I added a test case to check for both uniqueness (by identity) and equivalence of ManagedTypes.

Actually, on 5.3.1 (and 5.2.12):

• managedTypesSelfConsistenceByEquivalenceTest: pass
• managedTypesFromAttributesConsistenceByEquivalenceTest: fail
• managedTypesFromAttributesConsistenceByIdentityTest: fail
• entityTypesFromAttributesConsistenceByEquivalenceTest: pass
• entityTypesFromAttributesConsistenceByIdentityTest: pass
• embeddableTypesFromAttributesConsistenceByEquivalenceTest: fail
• embeddableTypesFromAttributesConsistenceByIdentityTest: fail

Thanks