Re: EOF operation ordering
Re: EOF operation ordering
- Subject: Re: EOF operation ordering
- From: Mike Schrag <email@hidden>
- Date: Tue, 19 Feb 2008 10:56:16 -0500
Chuck wrote an operation ordering delegate in Wonder to support MSSQL
(which doesn't support deferrable) that might be helpful here.
ms
On Feb 19, 2008, at 10:43 AM, Dov Rosenberg wrote:
We have had to resort to deferred constraints for Oracle. For SQL
Server we
have had to disable the constraints. I am certainly interested in a
more
portable solution.
Dov Rosenberg
On 2/19/08 10:37 AM, "Pierre Bernard" <email@hidden>
wrote:
Hi!
Back in the day of WO 4.5 to WO 5.1, I worked on a project where we
relied on EOF's capability to order database operations. Actually we
even extended the mechanism using a database context delegate to
apply
further sorting to already sorted operations.
On more recent projects, I always set contraints to be deferrable and
was thus not bothered by problems of operation ordering.
Today, I get a call from a former colleague who wants a new project
to
be set up like past common project: non deferrable constraints.
It turns out that on WO 5.2 this doesn't seem to work as expected.
The
database complains as the operations are not correctly ordered.
Did WO 5.2 break operation ordering? Has it become optional?
(I have not seen the EOModel in question. I wonder if it has circular
references which may prevent proper ordering.)
Show of hands: who uses deferrable constraints, who relies on
operation ordering?
Pierre
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