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Graphiti concepts and tutorial [message #1250910]

Wed, 19 February 2014 18:29

Simone Di Cola

Messages: 60
Registered: February 2014

Member

Dear all,
I've just started using Graphiti, and I'm a little bit confused about several concepts expressed during the tutorial:

- What do you mean with "context"?
- Is Diagram Type a shorten for Diagram Type Agent? If not, could you please tell me the difference between Diagram Type and Diagram Type Provider?
-In the "Create Conncetion Feature" section, could you please exaplain what these lines of code do?

          // add connection for business object
            AddConnectionContext addContext =
                new AddConnectionContext(context.getSourceAnchor(), context
                    .getTargetAnchor());
            addContext.setNewObject(eReference);
            newConnection =
                (Connection) getFeatureProvider().addIfPossible(addContext);
        }

Thanks for your precious time
Simone

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Re: Graphiti concepts and tutorial [message #1251663 is a reply to message #1250910]

Thu, 20 February 2014 13:13

Simone Di Cola

Messages: 60
Registered: February 2014

Member

Hi all,
it is possible that this post have been read by more then 10k people, and nobody has an answer? I know that maybe my questions are quite silly, but I would really be grateful if someone can answer them.

Thanks
Simone

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Re: Graphiti concepts and tutorial [message #1251675 is a reply to message #1251663]

Thu, 20 February 2014 13:30

Soeren M

Messages: 77
Registered: September 2011

Member

First of all I think its not a nice manner to treat us to answer you just because think there are enough views for an answer...
and secondly, the forum is bugged as hell, there were never ever 10k views.

To your questions, a context contains all the informations you need in that moment. So there are diffenrent contexts for different situations.
As you can see you have a AddConnectionContext, this one needs a source and a target, obv Wink

otherwise you cant connect two things...

In Graphiti, and I think everywhere else, you have a model behind your graphical representation, so you have to tell your context to which object you want to link the graphical representation...
and last but not least, you have to ask the FeatureProvider if you are able to create this connection...

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Re: Graphiti concepts and tutorial [message #1251709 is a reply to message #1251675]

Thu, 20 February 2014 14:12

Simone Di Cola

Messages: 60
Registered: February 2014

Member

Thanks for your answer, and I am very sorry if you'd though I was rude.

Simone

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Re: Graphiti concepts and tutorial [message #1252794 is a reply to message #1250910]

Fri, 21 February 2014 16:08

Michael Wenz

Messages: 1931
Registered: July 2009
Location: Walldorf, Germany

Senior Member

Simone,

context should have been clarified, so I try to answer the remaining
questions.

A Diagram Type defines one special kind of diagram like URL Class Diagram. A
Diagram type provider is an editor that is registered for a diagram type.
There could be more than one diagram type provider for one diagram type.

The snippet in the create connection feature assembles a context suitable
for adding a connection to the diagram and calls the fetaure provider to
search for and possibly execute a feature that can add such a connection to
the diagram.

Michael

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