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setRelationshipKeyPathsForPrefetching:

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setRelationshipKeyPathsForPrefetching:

Subject: setRelationshipKeyPathsForPrefetching:
From: Keith Wilson <email@hidden>
Date: Wed, 31 Oct 2007 13:59:26 +1100

Wow - if this does what I think it says it does then I am a very happy developer.

In my datamodel I have an Entity (A) for which I also have subtypes called A1 and A2.

I have another Entity B that has to-many relationships with A1 and also with A2.

When I created the SQLite database (under Tiger) it did not automtically create indexes on A1 and A2 for the to-many relationships so it was slow doing a fetch on the to-many relationship. This was very noticeable when doing lots of fetches on a large database.

So can I use setRelationshipKeyPathsForPrefetching: to get around the above problem?

Is there some other way solving the problem of to-many relationships to an Entity subtype?

Keith
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