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Hibernate is great, as far as you exactly know what you can do.


Whenever you do a mistake in mapping or HQL, it gives you a cold shower in a form of either:

  • a cryptic exception from the deepness of some 3rd party library,
  • or a NPE, or ArrayIndexOutOfBoundsException or similar, again coming from the deep,
  • or an error from the JDBC driver (which fortunatelly, unlike Hibernate, detects the error and doesn't continue to the DB),
  • or you end up with an invalid SQL query.


It's great Hibernate is on track and adding awesome features constantly, but IMO user friendliness should also be kept in mind.


For example: New user doesn't know the rules of thumb and instead of

AND wubTags MEMBER OF wuSimilar.tags

might try

AND wubTags IN wuSimilar.tags

which ends up with SQL syntax exception near "))". Huh? "))"? The query doesn't even contain a single parenthesis.

What happens is that Hibernate translates this to

( in (.))


Ok, it's a development scenario, so you know when started happening and can figure out, but still - this really seems like something very easy (and cheap) to handle.

JBoss divize brněnské pobočky Red Hat již tradičně nabízí studentům FIT VUT, FI MUNI, ale i ostatních univerzit vedení bakalářských a magisterských diplomových prací.


Dosud byla témata buď v informačních systémech fakult, nebo na


Založil jsem tedy stránku pro bakalářky a diplomky  nabízené brněnským JBossem.

I naše diplomky budou na a v systémech fakut; ale myslím, že bude fajn je mít na stránkách JBoss Community.

Hlásit se můžou jak diplomanti, tak potenciální vedoucí.

Recenly I posted about $subj being worked on.


So, time has passed, and Roman Jakubco and me pushed it to a state when it can be considered alpha.

We are about to write some docs and smoketests, and then release.


We are looking for some sample AS 5 configs for testing purposes.

If you can provide any, please let me know.

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