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Opening a diagram with a model (EObject) input [message #192000]

Tue, 10 June 2008 21:45

Artun Subasi

Messages: 20
Registered: July 2009

Junior Member

Hello,

I open the gmf generated graphical editors using the
xy.diagram.part.XyDiagramEditorUtil.openDiagram(..) method. It takes a
diagram resource file as input. I assume it reads the model and creates
a new corresponding EObject instance as its model. Can I somehow prevent
this new instantiation by giving a certain EObject as input (in addition
to the diagram resource)? I want the editor to work on an EObject with a
certain object identity.

Regards,
Artun

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Re: Opening a diagram with a model (EObject) input [message #192059 is a reply to message #192000]

Wed, 11 June 2008 10:11

Alexander Shatalin

Messages: 2928
Registered: July 2009

Senior Member

Hello Artun,

One of the possible solutions is to plug in your own instances of EObjects
is to create and register own Resource.Factory implementation. This class
should be responsible for loading your model resources and filling this resource
with proper contents, so you can use your own EObject instances there.

-----------------
Alex Shatalin

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Re: Opening a diagram with a model (EObject) input [message #192191 is a reply to message #192059]

Wed, 11 June 2008 21:48

Artun Subasi

Messages: 20
Registered: July 2009

Junior Member

Alex,

I managed to use my own object using such a resource factory. However,
it caused a new problem for me.

After I close the editor, it disposes the EObject (the corresponding
EObject is set to null). I didn't track the reason, because probably it
is meant to be that way.

I believe, I will still have trouble even I solve this problem. What
happens if the model is changed by the editor and then the editor is
closed without saving. Probably I would have to undo all dirty changes
myself.

I wanted to use this concept to make the sychronization easier. But it
seems that is not the case. And I suppose it would be kind of 'hacking'
to use this concept for sychronization.

Artun

> Hello Artun,
>
> One of the possible solutions is to plug in your own instances of
> EObjects is to create and register own Resource.Factory implementation.
> This class should be responsible for loading your model resources and
> filling this resource with proper contents, so you can use your own
> EObject instances there.
>
> -----------------
> Alex Shatalin
>
>

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