Hi All,
Trying to get a picture of how an App server supports user demarcated
transactions.
For this user need to make an explicit call to
"javax.jts.UserTransaction.begin()", so this is thru JTS. I remember
reading somewhere in the docs from Java Soft, that an implementation
of
JTS is not needed in EJB by default unless the server plans to
support
distributed transactions.
And in the EJB spces pg 95 "The javax.jts.UserTransacion interface
is
the only JTS interface that the EJB container provider must implement
in
order to support EJB"
Does it mean client demarcated transactions are not distributed ?
Is it becos we want our client to work on any transaction manager we
use
this interface ?
(so at later time though we change our backend TX-service we need not
change the application)
Does the container need to know of any client initiated transactions
,
or does it go thru TS directly ?
How does the container keep track of all the EB's involved in a
single
transaction started by the client ?
My understanding of JTA and JTS :
JTA is used by EJB applications to communicate with a TX service, if
we
don't support distributed transactions (which seems not to be a
requirement of EJB) and have just one TX service then is JTA is good.
On the other hand if we have more than on TX manager, TP monitors,
...
then we need JTS for interoperability.
Any thoughts/clarifications on
Where do we need JTA and when do we need JTS ?
Thanks!!!
Nishi.
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Nishi Nidamarty
TDI Inc. ,
TEL : 408-330-3466
5000 Old IronSides Dr,
FAX : 408-330-3444
Santa Clara CA 95054.
mailto:[EMAIL PROTECTED]
http://www.tdiinc.com
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