What are the three SQL statements being generated. That is usually where to start looking.
Chuck
On 2012-05-17, at 10:17 AM, Mark Gowdy wrote:
> Hi,
>
> I have a 'Media' entity, and a 'Category' entity.
> I need to create a qualifier that queries on 2 'to-one' relationships, as
> well as on a single 'to-many'.
>
>
> These are some test qualifiers and the number of distinct results they got:
>
> EOQualifier q1 =
> Media.PRIMARY_CATEGORY.eq(cat).or(Media.SECONDARY_CATEGORY.eq(cat)); //
> result count = 16 (correct)
> //
> EOQualifier q2 = Media.OTHER_CATEGORIES.containsObject(cat); // result count
> = 11 (correct)
> //
> EOQualifier q3 =
> Media.PRIMARY_CATEGORY.eq(cat).or(Media.SECONDARY_CATEGORY.eq(cat)).or(Media.OTHER_CATEGORIES.containsObject(cat));
> // result count = 15 (WRONG, should be 27)
> //
> // Another way
> EOOrQualifier q4 = new EOOrQualifier(new NSArray( new EOQualifier[] {q1,q2 }
> )); // result count = 15 (WRONG)
>
>
> In the past, I worked around the problem by doing two separate fetches and
> combining the results. But I would like to do it in one.
> So, any ideas how can I get 'q3' to work?
>
> The main reason for fixing this, is that I need to combine a few of these
> with a larger AND qualifier, and some of the intermediary qualifiers are
> likely to have LOTS of results.
>
> Regards,
>
> Mark
>
>
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--
Chuck Hill Senior Consultant / VP Development
Practical WebObjects - for developers who want to increase their overall
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