One can provide a JTS interface without actually provided real distributed
transactions. Some EJB servers have a real distributed transaction
service and some don't.
<vendor pitch>
GemStone/J does
</vendor pitch>
-Chris.
> -----Original Message-----
> From: Nishi Nidamarty [SMTP:[EMAIL PROTECTED]]
> Sent: Tuesday, March 02, 1999 5:18 PM
> To: [EMAIL PROTECTED]
> Subject: JTA and JTS in EJB
>
>
> 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.
>
> --
>
>
> --
>
> (| (.)(.)|)
> -------------------OOOo--()--oOOO.---------------
>
> 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>
> ------------------------------------------------------------
>
===========================================================================
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff EJB-INTEREST". For general help, send email to
[EMAIL PROTECTED] and include in the body of the message "help".
