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OCL fan-in & fan-out [message #3596]

Tue, 06 February 2007 10:51

Joana M. F. Trindade

Messages: 7
Registered: July 2009

Junior Member

Hello everyone,

I am using the EMFT Query framework to check OCL queries against instance
models. However, I'm new to OCL and I can't seem to find any good
tutorials.

So, I have a instance model which is composed by objects that extend
either "Component" or "Connector" (more specifically, a MVC architecture
editor). What I would like to do is calculate the fan-in/fan-out of a
given component. By fan-in and fan-out I mean counting the number of
connectors pointing to a component (fan-in), and the number of connectors
leaving a component (fan-out).

I'd appreciate any kind of help or advise.

Thanks in advance,
Joana Trindade

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Re: OCL fan-in & fan-out [message #4868 is a reply to message #3596]

Mon, 12 February 2007 10:54

Joana M. F. Trindade

Messages: 7
Registered: July 2009

Junior Member

Anyway, I've managed to do it. With a component selected at the diagram:

-- fan-in
Connector.allInstances()->select(c : Connector | c.target.name =
self.name)->size()

-- fan-out
Connector.allInstances()->select(c : Connector | c.source.name =
self.name)->size()

Cheers,
Joana M. F. Trindade

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