[News.eclipse.technology.gmf] Constraints in Ecore for GMF

[Madanagopal <madanagopal@xxxxxxxxx>]

Hello,

With reference to some previous posts  
https://bugs.eclipse.org/bugs/show_bug.cgi?id=143580
i am currently trying to have constraints implemented at the Ecore level.

Moreover my requirement is to validate a class Firm with an attribute  
"name" with constraint "self.name.size() > 0".

I have another possibility to implement this. Define an Audit Rule for  
this constraint and then Enable the Validation Options in .gmfgen by  
setting

Diagram -> Validation Decorators  to "true"
Diagram -> Valdation Enabled to "true"
Providers -> Validation Provider Priority  to "Medium".

This will generate diagram plugin which would have options Diagram->  
Validate to validate my Model.

Now having constraints at Ecore level, what are the benifits that i get  
when i use them for GMF, since I have to deal with lots of Constraints in  
Design Level while writing Ecore and some in gmfmap.

Should i still have to make any changes while generating GMF Diagram  
Editors with having Constraints in Ecore Level.

Please Post in your Comments.
An Example or a tutorial on this topic would be really helpful.

Madanagopal.

Attachments :
1. Ecore Snapshot
2. Ecore File

Attachment: company.ecore
Description: Binary data

Attachment: ScreenHunter_31.gif
Description: GIF image