Apple

On Dec 9, 2013, at 5:41 PM, Alexis Tual <email@hidden> wrote:

Hi Ken,

thanks for your suggestion, but I already have the backpointing relationship...
I'll try to do a simple projet to isolate the issue.

Alex

2013/12/6 Ken Anderson <email@hidden>

In ancient times… (and I mean like, 15 years ago)

A back pointing relationship from the subclasses of B to the abstract A (where the to-many relationship ‘toB' is) was necessary for all the plumbing to hook things up when the EOs came back from the prefetch.

Ken

On Dec 5, 2013, at 3:08 PM, Alexis Tual <email@hidden> wrote:

> Hi,
>
> I have 2 single table hierarchies :
> - B1 inherits from B
> - A1 inherits from A (abstract), A1 has a to-many relationship to B, let's call it toBs
>
> is it possible to prefetch this relationship ?
>
> We can't manage to get it work, I'll past the obscure exception tomorrow but can anyone confirm that this kind of prefetch works with EOF ?
> I've also tried ERXBatchFetchUtilities which seems promising "This works much like prefetching with fetch specifications, however this implementation is able to work around inheritance where prefetching fail", but no luck :/
>
> Thanks
>
> Alex
>

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References:
	>Inheritance and prefetching (From: Alexis Tual <email@hidden>)
	>Re: Inheritance and prefetching (From: Ken Anderson <email@hidden>)
	>Re: Inheritance and prefetching (From: Alexis Tual <email@hidden>)
	>Re: Inheritance and prefetching (From: Ken Anderson <email@hidden>)