This one time, at band camp, David Jencks said:
DJ>xa has nothing to do with this. If your requirement is for long lasting
DJ>interactive transactions, you need to do (2) or (I should have thought of
DJ>this before) use stateful session beans, which should work with your
DJ>current method calls.
Actually I was just speaking to a coworker about this. I said that we could
make use of a stateful session bean to hold all changes until a commit truly
needed to be done. The real problem with this is that some changes must be
committed for subsequent operations (within the same tx) can be properly
performed. This would then disallow rolling back all actions and what lead me
to asking about xa transactions.
DJ>> Option 2 is certainly doable, but I really don't like the idea of a
DJ>> client
DJ>> performing JNDI lookups. In my mind that seems to violate boundaries
DJ>> (but, of
DJ>> course, I could be wrong).
DJ>
DJ>Don't you do jndi lookups to find the session home?
Damn you're good, David! I wondered if you'd ask me about that! (That's
why I like reading your answers.) Yes, but it is compartmentalized into
a broker object.
DJ>A stateful session bean is probably a better idea since I think you could
DJ>figure out a way to rollback transactions that have remained open too long
DJ>(like maybe the client crashed, user went to lunch, etc). If you can
DJ>guarantee that the client will really end the tx, I don't see much
DJ>difference between a client side ut or a stateful session bean that does
DJ>the same operations.
Yes, that's what it's coming down to in my mind - six of one, half dozen of
the other. I need to get further clarification on the requirement that is
causing me all this strife.
Thanks very much for your feeback, David. Your knowledge and your ability to
continue to remain active on this list is truly a value.
Bruce
--
perl -e 'print unpack("u30","<0G)U8V4\@4VYY9&5R\"F9E<G)E=\$\!F<FEI+F-O;0\`\`");'
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