[hibernate-dev] Hibernate#isPropertyInitialized vs Hibernate#isInitialized

[Gail Badner]

I think there can be an inconsistency between
Hibernate#isPropertyInitialized vs Hibernate#isInitialized when it comes to
an extra-lazy collection of an enhanced entity.

IIUC, after fixing HHH-11161 [1], if an extra-lazy collection is accessed
on an enhanced entity, the collection property is set to an uninitialized
PersistentCollection and calling Hibernate#isPropertyInitialized(
collectionfieldName ) will return true, even though the collection itself
is uninitialized.

I would have expected that false would be returned.

I've added a comment to the issue and asked Luis about it. Luis has pointed
out the 3 stages of an extra-lazy collection on an enhanced entity. I've
listed them below and added my understanding of what Hibernate#initialize
and Hibernate#isPropertyInitialized will return in each instance:

1) the attribute is not loaded at all;
    Hibernate.isPropertyInitialized( enhancedEntity, "extraLazyCollection" )
returns false;
    Hibernate.initialize( enhancedEntity.getExtraLazyCollection() ) returns
false; a side-affect
    is that the attribute will be set to an uninitialized
PersistentCollection.
2) the attribute is loaded, but the elements are not loaded;
    Hibernate.isPropertyInitialized( enhancedEntity, "extraLazyCollection" )
returns true,
    because the property is initialized to a PersistentCollection (even
though the PersistentCollection itself is uninitialized).
  Hibernate.initialize( enhancedEntity.getExtraLazyCollection() ) returns
false.
3) the attribute is loaded and the elements are loaded.
  Hibernate.isPropertyInitialized( enhancedEntity, "extraLazyCollection" )
returns true.
  Hibernate.initialize( enhancedEntity.getExtraLazyCollection() ) returns
true.

Opinions about the inconsistency in 2)? Is this a bug in the code or in the
Javadoc?

Thanks,
Gail

[1] https://hibernate.atlassian.net/browse/HHH-11161