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how to remove the EReference in my Ecore Diagram [message #897545]

Tue, 24 July 2012 13:14

frank fotso

Messages: 91
Registered: May 2012

Member

hi all,

i have build an ecore diagram when i want to join 2 Eclasses using an Ereference arrow i must give a name a lower and upper bound to that arrow. it is not possible to use the arrow without giving any name to that , like in UML you can link to class without giging a name to the arrow linker, i have try to remove the name nad validate it , but many errors appears. i want to remove the name because after generating my genmodel from an Ecore the generated DSL grammar from that genmodel add that arrow name to my DSL grammar and i don't want that.

any contribution will be appreciate.

Best regards,
Frank

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Re: how to remove the EReference in my Ecore Diagram [message #897550 is a reply to message #897545]

Tue, 24 July 2012 13:19

Ed Merks

Messages: 33140
Registered: July 2009

Senior Member

Frank,

Comments below.

On 24/07/2012 3:14 PM, frank fotso wrote:
> hi all,
>
>
> i have build an ecore diagram when i want to join 2 Eclasses using an
> Ereference arrow i must give a name a lower and upper bound to that
> arrow.
Yes it must have a name.
> it is not possible to use the arrow without giving any name to that ,
No, it's not.
> like in UML you can link to class without giging a name to the arrow
> linker, i have try to remove the name nad validate it , but many
> errors appears.
It must have a name. Maybe in UML the name can be implicitly the name
of the thing being referenced, but in Ecore it must have a name.
> i want to remove the name because after generating my genmodel from
> an Ecore the generated DSL grammar from that genmodel add that arrow
> name to my DSL grammar and i don't want that.
What is the point of the reference then? Is it derived or transient?
Maybe the DSL generator ignores transient or derived features...
>
> any contribution will be appreciate.
>
> Best regards,
> Frank

Ed Merks
Professional Support: https://www.macromodeling.com/

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Re: how to remove the EReference in my Ecore Diagram [message #897736 is a reply to message #897550]

Wed, 25 July 2012 07:53

frank fotso

Messages: 91
Registered: May 2012

Member

i have check and the reference was neither derived nor transient , so i don't really know was means for a reference to be transient or derived. can you explain it to me ?

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Re: how to remove the EReference in my Ecore Diagram [message #897757 is a reply to message #897736]

Wed, 25 July 2012 08:21

Ed Merks

Messages: 33140
Registered: July 2009

Senior Member

Frank,

Derived features are not copied by EcoreUtil.copy because it's assumed
that their values are computed from the values of other non-derived
features. Perhaps the DSL generator will ignore such features as well...

Transient features are not serialized in the XML; all serializers are
generally expected to respect this behavior. Perhaps the DSL generator
will ignore such a feature as well...

On 25/07/2012 9:53 AM, frank fotso wrote:
> i have check and the reference was neither derived nor transient , so
> i don't really know was means for a reference to be transient or
> derived. can you explain it to me ?
>

Ed Merks
Professional Support: https://www.macromodeling.com/

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Re: how to remove the EReference in my Ecore Diagram [message #897797 is a reply to message #897757]

Wed, 25 July 2012 09:16

frank fotso

Messages: 91
Registered: May 2012

Member

thanks , i think it is clear now.
but there is a way to make the DSL generator to ignore those features during grammar generation?

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Re: how to remove the EReference in my Ecore Diagram [message #897808 is a reply to message #897797]

Wed, 25 July 2012 09:26

Ed Merks

Messages: 33140
Registered: July 2009

Senior Member

Frank,

That's not an EMF question. It's an Xtext question I assume?

On 25/07/2012 11:16 AM, frank fotso wrote:
> thanks , i think it is clear now.
> but there is a way to make the DSL generator to ignore those
> features during grammar generation?
>

Ed Merks
Professional Support: https://www.macromodeling.com/

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