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From Andrus Adamchik <and...@objectstyle.org>
Subject Re: Detecting when outer joins are needed [Was: Cayenne does not throw an exception when an outer join is attempted]
Date Fri, 25 Aug 2006 06:45:43 GMT

On Aug 23, 2006, at 11:35 PM, Mike Kienenberger wrote:

> Here's where I'm finding that I need outer joins:
>
> 1) If two qualifiers for a non-mandatory relationship path are or'd
> together.   This is also what √ėyvind Harboe reported.   It may be that
> the non-mandatory part is irrelevent.
>
> 2) If using noMatchExp on a non-null value for a non-mandatory
> relationship path.

Thanks Mike - that makes sense. I think "non mandatory" part is  
relevant. Not sure that we need to catch it though. IMO this should  
be left as an exercise to the user.

Andrus

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