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[CDO] Import/Export for model migration? [message #736037]

Thu, 13 October 2011 12:30

Erdal Karaca

Messages: 854
Registered: July 2009

Senior Member

Does anyone have a good process/best-practice for using the import/export functionality of CDO to apply a model migration?
If I export my repository, then the meta-models are also exported. I would need to commit my new meta-model, then re-import, but I guess this will not work...
And, the objects' types are referenced by their full namespace, i.e. if I had made changes to the namespace (e.g. when namespace includes some versioning infos), then the objects would not be mappable to the "new" meta-model...

Would COPE be good for this task? Anyone tried CDO with COPE?

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Re: [CDO] Import/Export for model migration? [message #736652 is a reply to message #736037]

Fri, 14 October 2011 07:37

Erdal Karaca

Messages: 854
Registered: July 2009

Senior Member

I guess the import function of the CDO server should be more flexible:
It should be able to override the namespace URIs and their corresponding package units (meta models).

This would allow to import the same model whose meta model has been changed in a binary compatible way.
Of course, this will not work for complex model migrations (no binary compatibility).

Any thoughts?

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Re: [CDO] Import/Export for model migration? [message #736689 is a reply to message #736652]

Fri, 14 October 2011 08:24

Eike Stepper

Messages: 6682
Registered: July 2009

Senior Member

Am 14.10.2011 09:37, schrieb Erdal Karaca:
> I guess the import function of the CDO server should be more flexible:
> It should be able to override the namespace URIs and their corresponding package units (meta models).
>
> This would allow to import the same model whose meta model has been changed in a binary compatible way.
> Of course, this will not work for complex model migrations (no binary compatibility).
>
> Any thoughts?
Sounds like a usable enhancement. But we'll need community contribution to make that happen anytime soon.

Cheers
/Eike

----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper

Cheers
/Eike

----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper

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Re: [CDO] Import/Export for model migration? [message #736804 is a reply to message #736689]

Fri, 14 October 2011 10:54

Erdal Karaca

Messages: 854
Registered: July 2009

Senior Member

Eike Stepper wrote on Fri, 14 October 2011 04:24

Sounds like a usable enhancement. But we'll need community contribution to make that happen anytime soon.

Done: https://bugs.eclipse.org/bugs/show_bug.cgi?id=360940

I will maybe work on this as I need to migrate my model soon...

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Re: [CDO] Import/Export for model migration? [message #736822 is a reply to message #736804]

Fri, 14 October 2011 11:09

Eike Stepper

Messages: 6682
Registered: July 2009

Senior Member

Am 14.10.2011 12:54, schrieb Erdal Karaca:
> Eike Stepper wrote on Fri, 14 October 2011 04:24
>> Sounds like a usable enhancement. But we'll need community contribution to make that happen anytime soon.
>
>
>
> Done: https://bugs.eclipse.org/bugs/show_bug.cgi?id=360940
>
> I will maybe work on this as I need to migrate my model soon...
Great! Count on me when youneed help ;-)

Cheers
/Eike

----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper

Cheers
/Eike

----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper

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Re: [CDO] Import/Export for model migration? [message #758022 is a reply to message #736037]

Mon, 21 November 2011 19:31

Alexandre Borgoltz

Messages: 31
Registered: July 2009
Location: France

Member

Quote:

Anyone tried CDO with COPE?

I have tried Edapt but it is not compatible with CDO - I am waiting for a confirmation about that though (see thread 262295 entitled "[Edapt][CDO] EDAPT with CDO ").

AFAIK Edapt only accepts XML file serialized models. Hence not compatible with CDO.

HTH!

--
Alexandre

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