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Delete Element Based Edge together with its Target/Source [message #1743651]

Sun, 18 September 2016 08:57

Xi Ng

Messages: 26
Registered: June 2016

Junior Member

Hello,

I would like to implement the following behavior:

- If a Node/Container is deleted, I want all related (Element Based) Edges (outgoingEdges, incomingEdges) to be deleted too. At the moment, the edge just disappears with the node from the diagram, so I can not see it. But in the corresponding MyTry.mymodel (in the mymodel.example folder) it still exists.

- If a (Element Based) Edge is deleted, I do NOT want the related Nodes/Containers (target, source) to be deleted.

How or better where do I implement this?

I tried it with adding a "Delete Operation" to the Node/Container to invoke also deleting the edge, when deleting the Node/Container:
Element Edition > Delete Element > Change Context: var:element.incomingEdges > Remove

But that does not work. I would appreciate any hints.

Thank you
Xing

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Re: Delete Element Based Edge together with its Target/Source [message #1743776 is a reply to message #1743651]

Mon, 19 September 2016 14:49

Maxime Porhel

Messages: 516
Registered: July 2009
Location: Nantes, France

Senior Member

Hi Xi,

There are several errors in "var:element.incomingEdges" :
. var:element is an access to the variable element: you can't add nothing after.
. if you want to navigate the model from the element, just use another interpreter, like AQL for exemple: "aql:element.incomingEdges"
. i think that incomingEdges is not a feature of your metamodel, you should replace it by your domain feature or service to retrieve the element to remove from the current element to delete.
. there might be several edges to delete: a "For" model operation would be a better idea than the "Change context"
. you can also navigate on the "view" model and retrieve the semantic element you want to delete.

For the last point, the "elementView" variable is the clicked element which will be delete among the semantic element when you will call the delete tool:
"aql:elementView.incomingEdges.concat(elementView.outgoingEdges).target->asOrderedSet()"
.target is used to navigate from the "graphical" model to your domain model.
->asOrderedSet is used to transform the result in a set and avoid duplicates.

Regards,

Maxime - Obeo

Need training or professional services for Sirius?
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