Re: Using ON_ERROR_ROLLBACK functionality in JDBC

Does the current savepoint implementation in the driver require a
separate round-trip?

-- Mark Lewis

On Fri, 2006-07-28 at 03:57 -0500, Kris Jurka wrote:
>
> On Fri, 28 Jul 2006, Koth, Christian (DWBI) wrote:
>
> > I would need the same functionality using JDBC. So I could continue with
> > my batch insert even if one or more statements fail. Right now I'm
> > committing the transaction after each insert.
> >
> > I have thought of the following:
> >
> > 1. Checking constraints before calling insert. (to slow)
> > 2. Creating a user defined savepoint before each insert,
> >   and rolling back to this savepoint if the insert fails. (not tried yet)
> >
> > What would you recommend? Is it possible to set ON_ERROR_ROLLBACK for
> > JDBC transactions?
>
> The JDBC driver does not currently support this behavior and if it did it
> would implement it using 2) behind the scenes, so that's a good approach.
>
> Also it's not clear what you mean by a batch, but the use of savepoints
> will not allow things like Statement.executeBatch() to commit parts of a
> batch.  It's all or nothing for these.
>
> Kris Jurka
>
> ---------------------------(end of broadcast)---------------------------
> TIP 1: if posting/reading through Usenet, please send an appropriate
>        subscribe-nomail command to majordomo@postgresql.org so that your
>        message can get through to the mailing list cleanly