Re: EOModel needs an easy tweak
Re: EOModel needs an easy tweak
- Subject: Re: EOModel needs an easy tweak
- From: Chuck Hill <email@hidden>
- Date: Sun, 7 Nov 2010 09:35:42 -0800
On Nov 6, 2010, at 11:02 PM, Farrukh Ijaz wrote:
>> For your case, I'm finding it difficult to imagine why two entities
>> (IS-A) have such different relationship requirements.
>
> The model has a legacy. In the beginning the entities appear to be different but semantically they are have some common behaviour when observed under specific domain . E.g. in a File System we have File and Folder (Directory) two separate entities. But at OS level, both have name, timestamp, permissions etc. The need before was to treat File and Folder as separate entities, but now the requirement demands to have some granularity among them. This is just an example to explain the situation.
But do they share behavior? Shared data is not necessarily an indication for inheritance.
Chuck
--
Chuck Hill Senior Consultant / VP Development
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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