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Home » Polarsys » Capella Studio » Understanding the code behind viewpoint creation
Understanding the code behind viewpoint creation [message #1832917] Tue, 29 September 2020 10:03
Nicolas Berginiat is currently offline Nicolas BerginiatFriend
Messages: 3
Registered: August 2020
Junior Member
Hi,

I followed the tutorials about VP (Viewpoint) creation and I think I understand the different steps.

Links :
Viewpoint Creation for Capella with Capella Studio : https://www.youtube.com/watch?v=NWCyKsPfc2Y&t=187s
Creation of VP with Capella Studio 1.1 : https://www.youtube.com/watch?v=zvIzyDxAj1c

If I understood correctly, you can deconstruct the process in different steps:
-write the metamodel description in the .data with the classes, the attributes, the associations, etc.
-write the ui implementation in the .ui with the containers, the fields, etc.
-write the diagram description in the .diagram with the containers, the nodes, the edges, etc.
-write in the .services, .activityexplorer and .build but I consider it optional given what I want to do
-generate and package everything
-put the generated VP in Capella files
-activate the VP in a Capella project
-use the VP

However, I can't manage to write a functional VP that does what I want because I can't quite grasp which code is necessary to make it work.
Just for learning purposes, I'd like to create a VP able to:
-create an object (let's call it "A") and place it in the Logical Architecture Blank at the same level as the Logical System / Logical Actors (directly on the white background). I want to represent "A" as a rectangle with its attribute "name" in it.
-create and place "B", the same object as "A".
-create and visualize a link between "A" and "B". A -> B or B -> A, it doesn't matter because it's just to learn.
-create and visualize a link between "A" (or "B") and a Logical Function (but it could be any already existing Capella element).

If my description is not clear, I'd like to mimic the following image :

index.php/fa/38990/0/

It's from the VP Requirement but I don't want to go that far, meaning and complexity will come later. I just want to put two rectangles, a link between them and a link with an already existing Capella element.

I tried to create a VP doing the first step of what I said, without success (cf dataFile and diagramFile) :
index.php/fa/38991/0/
index.php/fa/38992/0/

When using it in a project, I see the tool to create my element. I see I can put it on the white background and not inside a logical component but it doesn't appear after I click.

Can someone tell me what's wrong ?
What should I write to make it work ?
Is there a place that better explains the code behind VPs ?
What should I write to implement the other features I mentioned ?

I know my VP would be useless but for me, the few basic VPs are not enough to fully understand the code behind so I need to go through the basics.

[Updated on: Tue, 29 September 2020 10:04]

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