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Home » Modeling » Graphiti » autoupdate(autoupdate the diagram in case of changes in datamodel)
autoupdate [message #1067759] Wed, 10 July 2013 13:19 Go to next message
Juliane Mueller is currently offline Juliane MuellerFriend
Messages: 30
Registered: August 2011
Hi all,

I have an EMF Datamodel.
In case of changes in datamodel the method "updateneeded" is random called. Therefor I have a listener. This listener calls the method "update" in case of changes.
The method is called and I can define the differences. But if I want to add anything to the diagram an exception is thrown.

Has anyone an idea how I could autoupdate the diagram?

Here is my code:

In the listener:
UpdateContext updateContext = new UpdateContext(getDiagram().getChildren().get(0).getGraphicsAlgorithm().getPictogramElement());
IUpdateFeature updateFeature = getFeatureProvider().getUpdateFeature(updateContext);

and that's the exception:
!ENTRY org.eclipse.ui 4 0 2013-07-11 13:36:43.886 
!MESSAGE Unhandled event loop exception 

org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.IllegalStateException: Cannot modify resource set without a write transaction)

Caused by: java.lang.IllegalStateException: Cannot modify resource set without a write transaction at org.eclipse.emf.transaction.impl.TransactionChangeRecorder.assertWriting

Regards, Juliane

[Updated on: Thu, 11 July 2013 12:05]

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Re: autoupdate [message #1068134 is a reply to message #1067759] Fri, 12 July 2013 10:50 Go to previous message
Michael Wenz is currently offline Michael WenzFriend
Messages: 1927
Registered: July 2009
Location: Walldorf, Germany
Senior Member

there's a bunch of isAutoUpdateAt... methods in the diagram type provider
that you might override to control the update behavior of the editor. Have
you seen those? Implementing an update listener should not be necessary

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