...

Hi guys

we are hacking with andre some tests for the exporter. Now we would like to compare two FAMIX entities and in particular their properties here are a bunch of questions we got

• why there is no class comment on MSEDefaultState and friends?

Because nobody wrote one.

I know because I wrote a lot of the one on FM3 when you were at my place. Now it would be good to add some more.

...

what is the difference between a property and an attributes

• attributes are meant to be used for defining meta-model extensions (like adding relations to new entities)
• properties are meant to be used for caching the value of various computations such as metrics

...

• how can I get all the properties defined on an entity?

there is allDefinedProperties

Yes, this is the one (like the model says).

But allDeclaredProperties also returns attributes. so this is not exactly what we want.

MooseEntity>>allDeclaredProperties "All properties described in the metamodel"

^self mooseDescription allAttributes

...

Now how can I apply a given FMDescription of a property obtained from the the allDefinedProperties to a given entity

I was thinking about

aDescription valueFor: anEntity

Look in the accessing-meta protocol from FM3PropertyDescription

We found getFrom:

Cheers, Doru

...

Stef and Andre

Andre Hora

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