Guys,

I'm working on a fat desktop application that uses Hibernate 2, but I've been forced to use Hibernate 3 in some cases to be able to take advantage of the new Projection features, particularly with Criteria queries.

App startup time is very important, and I've been examining http://www.hibernate.org/194.html and trying to figure out how I can use that with 2.1, because app startup is currently very slow when parsing the configuration.

Now, after adding Hibernate 3, it's even slower. Hibernate 3 seems to take almost twice as long as 2 to load, and between the two, it's extremely long.

What I'd like to do is be able to use the same Configuration or Session object for both Hibernate 2 and 3. That way, at least I only have to load a Configuration once, rather than twice.

Anyway to do this? I'm sure this is quite impossible, but thought it worth a shot to ask.

Any other suggestions?

Thanks!

jbwiv

you can't - at least not easily (and it for sure isnt recommended).
But you can without problems run them in the same vm no problems there.

the reason why it takes time in H3 is probably because you are still referring to hibernate-2 dtd which h3 will need to go fetch from the net ...and thats dog slow.

change it to a hibernate 3 dtd and it will go faster.
/max