Hi,
I've got two metafacades here, which both indirectly inherit from
ClassifierFacade, let's call them C1 and C2.
I've also got a metafacade which inherits from AssociationEndFacade, call that
A. Now I'd like the associationEnds which belong to C1's to be of type A, while
those belonging to C2's should just be normal AssociationEnds.
I would have thought that this could be accomplished in
andromda-metafacades.xml by means of the "context" mechanism, i.e. state that A
should be used when the context is C1, like this:
<metafacade class="org.andromda.cartridges.stmdsoc.metafacades.A">
<mapping class="org.omg.uml.foundation.core.AssociationEnd$Impl">
<context>org.andromda.cartridges.stmdsoc.metafacades.C1</context>
</mapping>
</metafacade>
However, this only seems to work half and half:
(suppose there is only one association, which is between a C1 and a C2)
When I obtain a C2, I get the following:
$myC2.associationEnds.iterator().next().class: AssociationEnd // correct
$myC2.associationEnds.iterator().next().otherEnd.class: A // correct
$myC2.associationEnds.iterator().next().otherEnd.otherEnd.class: A // wrong!
When I obtain a C1, I get this:
$myC1.associationEnds.iterator().next().class: A // correct
$myC1.associationEnds.iterator().next().otherEnd.class: A // wrong!
$myC1.associationEnds.iterator().next().otherEnd.otherEnd.class: A // right
$myC1.associationEnds.iterator().next().otherEnd.type.associationEnds.iterator().next().class:
AssociationEnd // right!
In other words:
- starting from a classifier, getting an associationEnd will always return one
with the correct facade
- travelling to the other end of an associationEnd should always change the
facade from A to AssociationEnd or the other way round, since the context
should have changed, but this only works when going from C2 to C1, not in the
other direction. In the other direction, the facade of the associationEnd is of
the wrong type, but going from there to its type, and then back will fix it
(probably because this triggers the context change?)
I hope the problem is clear, but anyway, the question is: When exactly is a
context change triggered? Why is it changed when going from C2 to C1, but not
in the other direction? Note that both C1 and C2 have been declared with
contextRoot="true" in andromda-metafacades.xml
this is andromda 3.0 final...
Thanks,
Hans
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