Possibility to deactivate row count checking

Description

I'd like to suggest a new setting to deactivate checking of affected rows. To make it a little bit clearer, I want a possibility to deactivate the TooManyRowsAffectedException. In the project I'm involved we have hundreds of triggers that run inserts and updates oder deletes when queries are fired. In all cases I get the mentioned exception from NHibernate. SET ROWCOUNT OFF isn't a possibility in that case! So I had to comment out the lines throwing the exception in NHibernate.AdoNet.Expectations. I found that many people have the same problem, but with fewer triggers, so SET ROWCOUNT OFF was a way to go... I think, it would be better to provide a setting (perhaps in hibernate.cfg.xml) to deactivate the check for too many affected rows.

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Fabio Maulo
April 22, 2010, 8:37 AM

You can inject your IBatcherFactory implementation. Inside your batcher you can override DoExecuteBatch and avoid the call of VerifyOutcomeBatched.
The configuration property is : adonet.factory_class

Because the feature is there I think we can close this issue.

Vern Fridell
April 22, 2010, 11:08 AM

Thank you. I've tried this and it works. This solves my problem in a much cleaner way than forking NHibernate or altering the 3rd party DB.

One small point: I had to completely reimplement SqlClientBatchingBatcher because the implementation of DoExecuteBatch is non-trivial. It uses some private member variables that are also used elsewhere in the class. I just copied the SqlClientBatchingBatcher as a whole and commented out the VerifyOutcomeBatched call. But all in all, an easy fix.

Mike Doherty
April 23, 2010, 4:00 AM

I agree that you can close this issue.

We have also successfully worked around this problem using Fabio's solution. In our case we already had a custom driver so Fabio's approach of injecting the IBatcherFactory via the driver worked really well for us (http://groups.google.com/group/nhibernate-development/browse_thread/thread/56d959bedf6bc45).

Mike Doherty
April 23, 2010, 4:53 AM

I wrote up my solution here http://stackoverflow.com/questions/1354362/toomanyrowsaffectedexception-with-encrypted-triggers/2698205#2698205 so that hopefully a few other people will find it.

Fabio Maulo
July 22, 2010, 10:06 AM

Mike,
Can you also add a wiki in our "How to wiki" ?
http://nhforge.org/wikis/howtonh/default.aspx

Thanks.

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Reporter

Manuel Rennecke

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