Re: Imports

From: Malcolm Edgar (malcolm.edga..mail.com)
Date: Sun Feb 17 2008 - 23:49:14 EST

  • Next message: Andrus Adamchik: "Re: Imports"

    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 <ar..sh.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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