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Remove link programmatically [message #487797]

Thu, 24 September 2009 13:08

Jose Salazar

Messages: 34
Registered: July 2009

Member

Hello,

I'm very confused, to create a node exists DeferredCreateConnectionViewAndElementCommand where everything works. However, to eliminate there is no class to take care of everything, I have to remove the graphic with DeleteCommand, and then delete the part of RemoveCommand model, but this does not work everywhere, I mean, in a AbstractTransactionalCommand works, but in a non AbstractHandler.

What is the correct way to remove a link for example?

Jose.

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Re: Remove link programmatically [message #487982 is a reply to message #487797]

Fri, 25 September 2009 08:23

No real name

Messages: 31
Registered: September 2009

Member

Hi Jose,

one way to go would be a RecordingCommand which records the changes made by a subclass's direct manipulation of objects via the metamodel's API.

You're simply required to implement the RecordingCommand.doExecute() method to make the desired changes to the model. (Note that, because changes are recorded for automatic undo/redo, the concrete command must not make any changes that cannot be recorded by EMF unless it does not matter that they will not be undone).

Therefore you don't bother about updates in the view because they will be handled for you.

Best regards,

sas

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