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What is the best code practice to modify the domain model on diagram loading? [message #1046829]

Mon, 22 April 2013 12:38

Vitaly Savickas

Messages: 62
Registered: March 2010

Member

Hello,

Can anyone suggest what is the best coding practice to modify the domain model when loading a diagram file?

I am interested in a scenario where some attributes of node elements need to be set as the diagram is opened. In my case there are non-transient attributes, which represent a file path to a resource. When a diagram is opened I need to load those resources for each of the nodes and set another attribute if loading succeeded.

From what I can see the generated diagram code does the whole loading process in a single call to

DiagramIOUtil.load(domain, storage, true, getProgressMonitor())

in the body of a

XXXDocumentProvider::setDocumentContent(IDocument document, IEditorInput element)

method, suggesting that I can customise the loaded document at that point. However, I try to avoid code customisation and separate the generated code from my code. Is there a better solution?

P.S. It is important that the diagram should not be marked as modified after this process.

Cheers,
Vitaly

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Re: What is the best code practice to modify the domain model on diagram loading? [message #1052563 is a reply to message #1046829]

Tue, 30 April 2013 08:36

Ralph Gerbig

Messages: 702
Registered: November 2009

Senior Member

Hi,

did you try to overrude createPartcontrol of your generated xxxDiagramEditor?

Ralph

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Re: What is the best code practice to modify the domain model on diagram loading? [message #1052603 is a reply to message #1052563]

Tue, 30 April 2013 09:39

Vitaly Savickas

Messages: 62
Registered: March 2010

Member

Thank you for the answer, Ralph.

Isn't createPartControl() concerned about the building of diagram UI? It seems to me not a very suitable place to work on the model, but I can be wrong. I'm curious if you have experience of similar problem.

Cheers,
Vitaly

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