Group elements

[emiliano.davila]

Hello,
We are trying to group elements using the EA API, but we have not succeeded in any way.
Is it possible to do this by API or by Database?

Best Regards.

[qwerty]

Group where?

q.

[emiliano.davila]

We want to replicate the "Group Elements" functionality in a diagram.

[qwerty]

That's probably possible, but likely only when fiddling with the tables directly. I haven't documented that yet and will probably be able to look into it during the weekend.

q.

[emiliano.davila]

Thank you very much, we look forward to hearing from you.

[qwerty]

Yap, I found it. But I don't have all the details.

What EA does it that it stores grouping information in t_diagram.styleEx. E.g. I have grouped two classes and it added

Code: [Select]

OPTIONS_CA81B41F=GID=0C08:;OPTIONS_D744D373=GID=0C08:;
The OPTIONS_xxx is made from the t_diagramobjects.objectStyle contets. The first of which is

Code: [Select]

DUID=CA81B41F
So that part is doable, though it needs quite some queries to build the group string.

What I have not found out yet is how the

Code: [Select]

GID=0C08:;code is built. It might be a random code. Will see if I can get light into that too.

q.

[qwerty]

A few experiments indicate that the GID code is a random 4-byte GUID.

Of course, the implementation is rotten. After having grouped the two elements I grouped one of them with a third. The result was a new group of the latest two elements and an orphan. Well, it's EA...

q.

[emiliano.davila]

Thank you very much. All this information is very useful for us.
We will test and comment on the results.