NH-2180 - Many-To-Many with Property-ref fails to get subitems with FetchMode Join

[nhibernate-bot]

Armin Landscheidt created an issue — 18th April 2010, 5:28:36:

When I try to get an item with a many-to-many relation and property-ref on both sides NHibernate produces an exception. If I use FetchMode Select there is no Problem but with Join I get this error.

I tried to figure out what exactly the problem is but I don't get it. It seems to be a problem in building the mappings. While loading the object I think that AbstractPersister should create an UniqueKeyLoader. The decision if it should creat the kealoader is made while the mappingbuilding.

The patch contains the two testcases with fetchmode select and join.

[fredericDelaporte]

#1872 has fixed the root cause of this bug, no exception are produced any-more. But another bug still causes the feature (property-ref combined with many-to-many) to be unusable: the collection is loaded with null elements, or unrelated elements. So this bug should stay opened. See #1873.