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RE: Prefetching relationship issue
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RE: Prefetching relationship issue


  • Subject: RE: Prefetching relationship issue
  • From: "Federico Hernandez" <email@hidden>
  • Date: Tue, 15 Jul 2008 18:05:10 -0500
  • Importance: Normal

- I'm using vertical inheritance.
- Yes, Entity A maps to a table ENTITY_A, but it is abstract, so its table
is empty.
- No, Entity B maps to its own table ENTITY_B.
- Because I'm using VI, I didn't use a restricting qualifier

Regards
Federico

-----Original Message-----
From: Lachlan Deck [mailto:email@hidden]
Sent: Martes, 15 de Julio de 2008 05:31 p.m.
To: Federico Hernandez
Cc: Development WebObjects
Subject: Re: Prefetching relationship issue

On 16/07/2008, at 3:06 AM, Federico Hernandez wrote:

> I have some entities like:
>
> Entity A (is abstract)
>
>            Relationship A. Is many to many with Entity X and it has an
> intermediate Entity AX)

What type of inheritance are you using? Single-Table, Horizontal,
Vertical?

Does EntityA map to a table in the db? If yes, then it's either ST or
VI.
Does EntityB map to the same table as EntityA? Then it's ST. Otherwise
VI.

Are you using a restricting qualifier?

Modeling inheritance:
http://developer.apple.com/documentation/LegacyTechnologies/WebObjects/WebOb
jects_4.5/System/Documentation/Developer/EnterpriseObjects/DevGuide/EOsII3.h
tml

with regards,
--

Lachlan Deck



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