Use an entity as reltionship (SIRIUS)

[RaulPiqueras]

Hi everyone, i'm having trouble with my entity in my metamodel in Sirius.

How do I use an entity (of my metamodel) as a relationship in the diagram in Sirius. As you can see in the image, i want to use the entity goal_relationship as a relationship in the diagram. I also attach a image of the result that i want to get.

Thanks!

[pcdavid]

Hi, for this case you need to use so-called "Element-Based Edges":

Like a Node Mapping they use a Semantic Candidates Expression and a Domain Class to identify the model elements they represents (in your case, instances of Goal_RelationShip).

They also need a Source Finder Expression and a (set of) Source Mapping (resp. Target Finder Expression and Target Mapping) to identify, from the instance (of Goal_RelationShip) the edge represents, which nodes are the source (resp. target) to point to.

See the documentation for more details.

You can also have a look at how the odesign of Ecore Tools uses both kinds of edges:

• inheritance relationships (the EClass.eSuperTypes references) are modeled using a Refrence-Based Edge (named EC ESupertypes);
• EReferences being themselves actual model elements inside the Ecore (like your Goal_RelationShip), are modeled unsing a Element-Based Edge (named EC_EReference).

[RaulPiqueras]

Hi, How can i create a Element Based Edge? I try it to do it, this it what i do:

And for create the edge i do it this, but it doesn't work

So, how i can do it?
Thanks

[pcdavid]

In your screenshot you did not set Semantic Candidates Expression (to tell Sirius which instances of Goal_Relationship to represent with this mapping) nor Source finder expression (from a particular Goal_Relationship to represent as an edge, which Goal is its source node).