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From "Andrus Adamchik (JIRA)" <>
Subject [jira] Commented: (CAY-1250) Prefetching doesn't work with prefetched subentity
Date Thu, 16 Jul 2009 14:10:15 GMT


Andrus Adamchik commented on CAY-1250:

Just committed a somewhat related fix of CAY-132.. Chances are it won't fix this issue, but
in general Cayenne somewhat relaxed its algorithm for making an eager fetch decision in case
of inheritance (specifically if a relationship is to superclass that has no inheritance qualifier).
If you are inclined to try it from an integration build, follow this link:$cayenne-server/

and wait till build #426 (or newer) is posted, or build Cayenne yourself from SVN.

> Prefetching doesn't work with prefetched subentity
> --------------------------------------------------
>                 Key: CAY-1250
>                 URL:
>             Project: Cayenne
>          Issue Type: Bug
>          Components: Cayenne Core Library
>    Affects Versions: 2.0 branch, 3.0M6
>            Reporter: Donald Vrakking
> Two entities;  A->B in a n:1 relation, B has a subentity. When prefetching B, the
toOneFault on A isn't updated with the prefetched B. When B is accessed from A, an additional
query is still executed to get B.
> It makes no difference if A has subentities or not.
> This occurs in 2.0.4 with a disjoint and joint prefetch. With 3.0M6 it only occurs when
using a disjoint prefetch.

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