Since the underlying data resource for "a" was never committed, the database
rolls back and it's as if that transaction never happened ('cause it didn't
;-)
-Chris.
> -----Original Message-----
> From: Syed Fareed Ahmad [SMTP:[EMAIL PROTECTED]]
> Sent: Monday, February 21, 2000 4:59 AM
> To: [EMAIL PROTECTED]
> Subject: EJB Transactions Managment
>
> Dear All,
>
> Just to be curious about EjbStore calls ? Can any body explain that how
> does the
> Applications Server handles the Transactions within multiple Entity EJBs.
> Like
> If I have two entity EJBs as "a" & "b". Both running in the same
> transaction OK.
> If the transaction commits, the App Server calls the EjbStore for both
> EJBs.
> Correct?
>
> But If Application Server called the EjbStore of "a" and Power goes off.
> What
> happens now?The developer had written the code for persistence in each
> ejbStore
> But the "b" 's ejbStore was not executed? How the App Servers assure that
> All
> EjbStore excute or none of them execute? Some type of Out of order
> execution or
> what? Because the changes made in the "a"'s ejbStore needs to be restored
> back.
> I know for JDBC that we can use the DataSource Object which can provide
> the
> common Connection Object to all participants in a transaction. But what we
> need
> to do If we are storing the data in a custom data Store or Legacy App. Do
> we
> need to write a custom Resource dispenser (just like the JDBC) based on
> the
> connectors API (being developed nowadays) or what ?
>
> Fareed Ahmad
>
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