Ayende @ Rahien

Hi!
My name is Oren Eini
Founder of Hibernating Rhinos LTD and RavenDB.
You can reach me by phone or email:

ayende@ayende.com

+972 52-548-6969

, @ Q c

Posts: 18 | Comments: 87

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NH Prof new featureUnbounded result sets

time to read 1 min | 127 words

One of the things that I am doing with NH Prof is not only giving you visibility into what NHibernate is doing, but also trying to automate my own experience in analyzing best practices and problematic usages of NHibernate.

NH Prof will detect usage patterns and warn against bad practices and suggest how to deal with them. The first one that I implemented was detecting Select N+1, and the feedback from the beta group was "Wow! I didn't even know that we had this problem, but casual use with the profiler immediately showed it."

Here is the newest feature, detecting & warning about unbounded result sets:

image

And the actual warning:

image

More posts in "NH Prof new feature" series:

  1. (09 Dec 2010) Alert on bad ‘like’ query
  2. (10 Dec 2009) Filter static files
  3. (16 Nov 2009) Exporting Reports
  4. (08 Oct 2009) NHibernate Search Integration
  5. (19 Aug 2009) Multiple Session Factory Support
  6. (07 Aug 2009) Diffing Sessions
  7. (06 Aug 2009) Capturing DDL
  8. (05 Aug 2009) Detect Cross Thread Session Usage
  9. (22 May 2009) Detecting 2nd cache collection loads
  10. (15 May 2009) Error Detection
  11. (12 May 2009) Queries by Url
  12. (04 Feb 2009) View Query Results
  13. (18 Jan 2009) Superfluous <many-to-one> update
  14. (18 Jan 2009) URL tracking
  15. (10 Jan 2009) Detecting distributed transactions (System.Transactions)
  16. (06 Jan 2009) The Query Cache
  17. (05 Jan 2009) Query Duration
  18. (24 Dec 2008) Unbounded result sets
  19. (24 Dec 2008) Row Counts

Comments

Mats Helander

I like where you are going with this! :-)

/Mats

Tobin Harris

Very nice! I just read about that in the "Release It!" book too. Nice that you've got NH Prof spotting that possible flaw.

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