Eclipse Community Forums: Sirius » Relation Based Edge with Sirius

Help

Home

Home » Eclipse Projects » Sirius » Relation Based Edge with Sirius

Show: Today's Messages :: Show Polls :: Message Navigator

Relation Based Edge with Sirius [message #1785245]

Wed, 11 April 2018 12:47

WINNER WINNER

Messages: 22
Registered: March 2018

Junior Member

Hi,

Can you please help me to define the OCL constraint that i should make to determine the target element from the source one.

My Ecore model is uploaded.

I want to define a relation between Stations as an edge.

Regards

Attachment: Capture du 2018-04-11 14-45-28.png
(Size: 17.82KB, Downloaded 151 times)
Attachment: Capture du 2018-04-11 14-40-03.png
(Size: 13.16KB, Downloaded 162 times)

Report message to a moderator

Re: Relation Based Edge with Sirius [message #1785553 is a reply to message #1785245]

Mon, 16 April 2018 14:58

Pierre Guilet

Messages: 250
Registered: June 2017

Senior Member

Hi,

From your metamodel it seems to me that an element based edge seems more adapted.

Indeed it is the Arc concept that contains the relation associating a station to another. From the Arc it is easy to have the source and target (aql:self.fromN and aql:self.toN).

With a relation based edge, you have to cross your model to retrieve the container of the source station then iterate on all arcs to find the one with as source the source station and then to return the associated station from this arc instance.
This will be much more complicated in AQL than from an element based edge .

Also don't hesitate to use Java services if you are not familiar with AQL language for more complicated expression :
https://www.eclipse.org/sirius/doc/specifier/general/Writing_Queries.html#service_methods
It allows you to use EMF APIs

If you still want to go that way I suggest you to read AQL documentation available at https://www.eclipse.org/acceleo/documentation/aql.html or in your help environment in Help>Help Content>Acceleo Query Language Documentation

But it should look something like :
aql:self.eContainer().arc->any(arcTemp|arcTemp.fromN=self).oclAsType(yourMetamodel::Arc).toN

Also don't hesitate to use the interpeter view to test your expression:
https://www.eclipse.org/sirius/doc/specifier/general/Writing_Queries.html

Regards,

Pierre Guilet - Obeo
Need training or professional services for Sirius?
http://www.obeodesigner.com/sirius

[Updated on: Mon, 16 April 2018 15:21]

Report message to a moderator