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Update Diagram for create [message #654532]

Wed, 16 February 2011 08:57

John Georgakis

Messages: 2
Registered: February 2011

Junior Member

Hi,

Is there a way to update the diagram when new business objects are created in the EMF model.
It seems that the domainlistener doesn't detect this
Is it needed to subclass the NotificationService ?

Thanks !

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Re: Update Diagram for create [message #654554 is a reply to message #654532]

Wed, 16 February 2011 09:49

Matthias Gorning

Messages: 81
Registered: April 2010
Location: Germany

Member

There is no way in Grahiti. There are only listeners for those business objects which do have a graphical representation.

I think the NotificationService is the wrong place for that what you want.

You should write your own domain listener, where you can handle new objects and if necessary change the diagram model.

BR,
Matthias

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Re: Update Diagram for create [message #654598 is a reply to message #654532]

Wed, 16 February 2011 13:07

Dobrou Mising name

Messages: 16
Registered: December 2010

Junior Member

What about this scenario:

You have all business objects stored in one root business object.
All business objects ale linked from corresponding diagram elements AND Diagram object (that is root of diagram) has link to root business object.

Now create update feature for Diagram object, that checks if Diagram contains elements for all objects from linked root business object.

Graphiti should listen for changes on business object linked from Diagram (same way as it's done for normal diagram elements).

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Re: Update Diagram for create [message #654810 is a reply to message #654598]

Thu, 17 February 2011 09:25

Jos Warmer

Messages: 114
Registered: October 2010

Senior Member

I would not artificially store lots of references to domain objects in your Graphiti editor. That 'pollutes' your editor.

For your goal you can use the EMF notifications (lots of tutorials and documentation available on the web). This will allow you to listen to all changes you need and do anything you want whenever an EMF object changes or is created.

We are doing exactly the same in our application. In our case we use CDO for storing objects and listen through CDO to changes in the domain objects. Based on that we update any open editors when needed.

Jos

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Re: Update Diagram for create [message #654915 is a reply to message #654554]

Thu, 17 February 2011 15:32

John Georgakis

Messages: 2
Registered: February 2011

Junior Member

As I do not have a root object, I have tried the solution of Matthias and it seems to work.

I do understand why this store a lot of references. I think there is only refs in the pictolinks and you need them to update each pictogram

The problem was, with the defult DomainChangeListener, that only modification are detected and that there is no update of the diagram if an object is created or deleted

Thanks for your help

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