> > "probably" is the reason we need a test ;) Agreed :)
> btw this will be another NH specific feature (it is not present even > in H3.3.1GA) This is quite surprising. I would expect <join> to be almost equivalent of <class> (except for things like <id>, etc.). Our object model inherits all objects from PersistentObject which contains some useful metadata. In this case, the only efficient inheritance strategy is to use <join> as it uses single table per subclass and also has discriminator to avoid crazy queries over all tables. I will prepare a patch later today that will add support for all collections (with test cases) so that <join> becomes a first class citizen. I haven't played with the test framework yet, hopefully it will run on Mono + Postgresql. Jan
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