This is about right.
----- Original Message -----
From: "Dieter Maurer" <[EMAIL PROTECTED]>
To: "Chris McDonough" <[EMAIL PROTECTED]>
Cc: "Chris Withers" <[EMAIL PROTECTED]>; "Ian Sealy"
<[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Friday, January 26, 2001 3:04 PM
Subject: Re: [Zope] subtransactions
> Chris McDonough writes:
> > Currently, yes. This is arguably wrong.
> Can you tell us, what the semantics of subtransactions is?
> It has been my impression that subtransactions are a kludge,
> essentially implemented for ZCatalog, to reduce the amount
> of main memory for large transactions.
> Rather than keep all modified objects in memory,
> they are flushed onto a file to be copied from there
> when the transaction is finally commited.
> If this is the case, then objects that do not need
> such hackery, simply provide empty "commit_sub" and
> "abort_sub" and do all their work in "commit".
> > ----- Original Message -----
> > From: "Chris Withers" <[EMAIL PROTECTED]>
> > To: "Chris McDonough" <[EMAIL PROTECTED]>
> > Cc: "Ian Sealy" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
> > Sent: Friday, January 26, 2001 10:35 AM
> > Subject: Re: [Zope] subtransactions
> > > Chris McDonough wrote:
> > > >
> > > > Because most databases don't have the notion of a subtransaction.
> > >
> > > Hang on... how come, if a file upload needs to commit a
> > that
> > > means that an SQL method you call while processing the same request
> > needs
> > > to support sub-transactions?
> > >
> > > confusedly,
> > >
> > > Chris
> > >
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