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From "Malcolm Edgar" <malcolm.ed...@gmail.com>
Subject Re: Imports
Date Mon, 18 Feb 2008 04:49:14 GMT
Hi Ari,

thanks for the response.  This would be a very good 3.0 feature if it
is not already present.

In Hibernate this functionality is performed as a flush operation,
where CRUD operations are performed against the transaction but are
not actually committed.

Would this would cause issues with Cayenne PK generation strategy, are
the highest/last table id values they maintained in memory?

regards Malcolm Edgar

On Feb 18, 2008 3:16 PM, Aristedes Maniatis <ari@ish.com.au> wrote:
>
> On 18/02/2008, at 2:07 PM, Malcolm Edgar wrote:
>
> > Is there a way in Cayenne, possibly using Transactions, that we can
> > perform this import, do inserts and queries against the transaction
> > and only commit/rollback at the end?
>
> Subclass the Cayenne context, override performQuery and add in your
> own custom code there to look for new objects within the context?
> There is almost certainly a way to have a database transaction cross
> several Cayenne commits as well, but I can't assist there.
>
> In fact we've done this several times in our application and I was
> just thinking the other day whether this might be an option in a new
> generified performQuery and might be useful to be pushed into Cayenne.
>
>
> Ari Maniatis
>
>
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> ish
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