On 2002.09.05 13:10:59 -0400 Bruce Snyder wrote:
> This one time, at band camp, David Jencks said:
>
> DJ>I really can't tell what you are doing from your description, and you
> DJ>appear at one point to imply that you have a BMT entity bean which is
> DJ>impossible.
> DJ>
> DJ>The spec is trying to lead you, in a stateless session bean, to code
> ut
> DJ>usage something like this:
> DJ>
> DJ>ut.begin();
> DJ>try {
> DJ>//do something
> DJ>} finally {
> DJ>ut.commit();//or rollback
> DJ>}
> DJ>
> DJ>Is this what you have?
>
> I'm way too caught up deciphering this damn architecture that I've
> inherited. Your example just made it through my thick skull! Must each
> operation be wrapped in a UT on the bean side? If so, the client side
> calls would be similar to this:
>
> 1) client call doWork() method of bean
>
> rather than this:
>
> 1) call to bean to begin tx
> 2) do some work here
> 3) call to bean to commit tx
>
> Correct?
yes
>
> If this is true, how can I expose UserTransactions out to a client so
> that developers have the ability to start, stop or rollback transactions?
1. (by far the best solution) rethink your architecture using an
appropriate layering so the client doesn't explicitly control transaction
boundaries.
2. If (1) is impossible due to time constraints, use a client-side user
transaction. IOW, look up the UserTransaction in the client.
david jencks
>
> Bruce
> --
> perl -e 'print unpack("u30","<0G)U8V4\@4VYY9&5R\"F9E<G)E=\$\!F<FEI+F-O;0\`\`");'
>
>
>
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