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Re: Deleting Flattened Relationships

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Re: Deleting Flattened Relationships

Subject: Re: Deleting Flattened Relationships
From: Chuck Hill <email@hidden>
Date: Mon, 20 Feb 2006 10:33:21 -0800


On Feb 19, 2006, at 4:02 PM, James Cicenia wrote:

I have a flattened relationship on a many to many.

ObjectA <-->> ObjectB <<--ObjectC

I have objectA owning destination and cascade delete set in EOModeler.
I do the same with Object C

1) Is this the correct way to setup EOModeler?


Almost, see below.

2) Now will deleting either Object A or Object C automatically delete the related ObjectB records?

Yes, though it is always good to test assumptions that you are unsure of in your unit tests. You should also have Nullify set on the relationships out of ObjectB so that if an ObjectC is deleted, dangling references to it are not left in ObjectAs.


Chuck

-- Coming in 2006 - an introduction to web applications using WebObjects and Xcode http://www.global-village.net/wointro

Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who are trying to solve specific problems. http://www.global-village.net/products/practical_webobjects


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  >Deleting Flattened Relationships (From: James Cicenia <email@hidden>)




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