Change Diagram Type to MDG defined one in Script

[[email protected]]

We have defined some new diagram types in an MDG profile and now want to change some existing diagrams to these types in a script.

The API has an attribute Diagram.MetaType but the help says this is read-only. Is there a way to update this (you can do it from the UI)?

[qwerty]

MDG diagrams have an entry in t_diagram.styleEx which looks like this (for a white board diagram):

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MDGDgm=Whiteboard::Whiteboard Diagram;HandDraw=1;Whiteboard=1;So most likely you just need to add

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MDGDgm=<MDG>::<diagram name>;
q.

[[email protected]]

Seems logical - and in fact when we check diagrams which we have manual changed using the UI it's as you describe. However....

We can set the relevant part of the attribute, but when we call Diagram.Update() and then re-load the diagram, it's reverted back to it's previous value!

Anybody got any ideas why?

[qwerty]

Have you cross-checked with

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SELECT * FROM t_diagramwhether the changes were actually made?

q.

P.S. You need to close/open EA to see the changes. I changed a normal class diagram. The icon was not changed and the background ditto (those are other parameters). But the toolbox was that of the white board.

[Aaron B]

Unfortunately you cannot change the "MDGDgm" value in Diagram.StyleEx via automation.  It was an intentional decision by our development team that it was not safe to change this value via automation once it's already been set.  The only way to change this value is either by using the "Change Type" command in the GUI, or change it via sql (usual caveats apply there).

[[email protected]]

Thanks for the reply (and for the reply to my colleague Simons support request).

A bit annoying but not a big issue as we assume the only difference the diagram type makes is which toolbox is displayed by default?

[qwerty]

Yes. The toolbox is the main visible difference. I guess some MDG add-ins implement behavior depending on the diagram type.

q.