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xtext models as ecore [message #697104]

Fri, 15 July 2011 14:35

chuck

Messages: 160
Registered: July 2010

Senior Member

HI everybody!

I'm interested to know if it's possible to inject or extract from xtext models (written by xtext) to ecore and opposite...

For example :
I write my grammar in xtext and I got the metamodel of my grammar... launching the other eclipse instance I can write textual models using my grammar definition... now...I would like to know if I could extract an ecore model of my textual model...

thx so much

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Re: xtext models as ecore [message #697115 is a reply to message #697104]

Fri, 15 July 2011 14:38

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

I do not really understand what your problem is. An Xtext model is
ecore based. So what is what you want to do? Did you read the
documentation section on Processing Xtext models? Regards Christian

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: xtext models as ecore [message #697121 is a reply to message #697115]

Fri, 15 July 2011 15:16

chuck

Messages: 160
Registered: July 2010

Senior Member

I know that the models written conforms to my grammar can be parsed or can be passed to expand template to generate text...I need an ecore representation of these textual models ...
Thx

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Re: xtext models as ecore [message #697125 is a reply to message #697121]

Fri, 15 July 2011 15:21

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi, please define ecore representation.~Christian

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: xtext models as ecore [message #697127 is a reply to message #697121]

Fri, 15 July 2011 15:32

Henrik Lindberg

Messages: 2509
Registered: July 2009

Senior Member

On 7/15/11 5:16 PM, chuck wrote:
> I know that the models written conforms to my grammar can be parsed or
> can be passed to expand template to generate text...I need an ecore
> representation of these textual models ...
> Thx

A meta model (.ecore file) is derived from the grammar or an existing
meta model is imported and used in the grammar.

A text is parsed into a model.

A model can be constructed programatically.
The model can be modified textually or structured.

The model can be serialized as text (conforming to the grammar).
The model can be serialized in some other format (XMI).

You would only need to save it as XMI (or some other universal format)
if you need to send it off to a context where the parser is not available.

If the parser is available, it is possible to reference the elements of
the model (parsed from text) just as any other model.

Does that help?

- henrik

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Re: xtext models as ecore [message #697128 is a reply to message #697127]

Fri, 15 July 2011 15:38

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Here is Sample Code for that: http://www.eclipse.org/forums/index.php/mv/msg/207930/666091/#msg_666091

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: xtext models as ecore [message #697129 is a reply to message #697127]

Fri, 15 July 2011 15:43

chuck

Messages: 160
Registered: July 2010

Senior Member

@You would only need to save it as XMI (or some other universal format)

exactly!! that's I wanna do!!
I have to process and build programmatically? there is no one operation like in TCS able to inject into an xmi file?

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Re: xtext models as ecore [message #697134 is a reply to message #697129]

Fri, 15 July 2011 15:55

Henrik Lindberg

Messages: 2509
Registered: July 2009

Senior Member

On 7/15/11 5:43 PM, chuck wrote:
> @You would only need to save it as XMI (or some other universal format)
> exactly!! that's I wanna do!!
> I have to process and build programmatically? there is no one operation
> like in TCS able to inject into an xmi file?

Christian provided a link to a forum thread that shows how it is done.
And yes, you need a small snippet of code to get it done. You can do it
as a builder, a save hook (both would ensure that the xmi version of the
content is always there), or you may want it as an action in the editor
menu, or as an export wizard, etc. All depends on what/why you are doing
this.

Normally, having the resource as an extra copy in a file in xmi format
is not very useful.

Regards
- henrik

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