Re: [Andromda-user] Extending the uml14 metafacade

François Eric Thu, 01 Jul 2004 10:13:19 -0700

If I extend the model in andromda-all/metafacades/uml/common/src/uml, I won't be extending the UML 1.4 but the common UML right? How can I extend the UML 1.4?

Sorry but I'm not sure I understand clearly the relation between the common uml, uml 1.4 and the cartridges.

Thanks


Chad Brandon wrote:

Hi Francois,
The UML metafacades are generated (then we implement the methods in the *LogicImpl* classes), there's a model in andromda-all/metafacades/uml/common/src/uml that these things are generated from. You can extend that model for your higher metafacades just like you do for cartridges. Is that what you're asking?

The andromda-metafacades.xml is not generated however, and allows us to map more than one meta model class (the OMG ones) to one metafacade class.
You had it almost right, but you would need to specify
the metaobjectClass as the OMG metamodel class to have
it use your higher metafacade class:
<metafacade
metaobjectClass="org.omg.uml.modelmanagement.UmlPackage$Impl"
metafacadeClass="org.andromda.metafacades.highermetafacade.PackageFacadeLogicImpl"/>
Also you shouldn't need to overwrite all mappings, but
only the ones you want to extend.
Chad
metafacadeClass="org.andromda.metafacades.highermetafacade.PackageFacadeLogicImpl"/>
metaobjectClass="org.omg.uml.modelmanagement.UmlPackage$Impl"
metafacadeClass="org.andromda.metafacades.uml14.PackageFacadeLogicImpl"/>
--- François_Eric <[EMAIL PROTECTED]> wrote:
Hi again,
How should I go to extend the uml14 metafacade? This metafacade does not have a uml diagram. It seems to have been done manually in the file andromda-metafacades.xml. If I am making a new metafacade (lets call it highermetafacade) should I overwrite all of the mappings of the andromda-metafacades.xml.
For example replacing:
<metafacade
metaobjectClass="org.omg.uml.modelmanagement.UmlPackage$Impl"

metafacadeClass="org.andromda.metafacades.uml14.PackageFacadeLogicImpl"/>
by:
<metafacade
metaobjectClass="org.andromda.metafacades.uml14.PackageFacadeLogicImpl"

metafacadeClass="org.andromda.metafacades.highermetafacade.PackageFacadeLogicImpl"/>
Is this what I should do or is there a better/easier
solution?
Thanks,
François
Chad Brandon wrote:
Hi Francois,
You should be able to do this, by packageing up
your

group of metafacades just like we've done with andromda-metafacades-uml-*.jar and andromda-metafacades-uml14-*.jar and placing them

on

your classpath with the other default ones.

However there is currently only one set of

metafacades

belonging to the "default" namespace, and those are the uml and uml14 ones. What you'll need to do

with

yours then is someone how make them override the "default" namespace, which you should be able to do

(I

haven't tried)...by placing your new jar of metafacades on the classpath AFTER the normal uml

and

uml14 metafacades. Does that make sense? Anyway

try

that out, and if it doesn't work let me know, and

I'll
fix it so it does work.
Chad
--- François_Eric <[EMAIL PROTECTED]> wrote:
--------------------------------- Thanks for the answer Wouter.

I would like to adopt the strategy you're defining
but

for ametametafacade. In other words, I'd like to create a metafacade asuml14. I'm able to do what you're saying with the cartridge but myproblem is

that

the logic I'm implementing is then not available toother cartridges. I'd like to make myself a new metametafacade (in thelikes of uml14) and would

user

that metafacade in my cartridges. Mycartridges

would
then extend these metafacades if they need to.
Concretely:

uml -> uml14 -> HigherMetafacade -> cartridge1
-> cartridge2
-> cartridge3
This way I could add certain methods that are
needed

by all threecartridges in a metafacade without modifying the uml14 metafacade(which I shouldn't do...right?). Is it possible to define

anotherlevel
of metafacade...if so how could I do it?
Thanks,
Wouter Zoons wrote:
You can pretty much implement any strategy you
like,

you will need tomodel your cartridge using UML

anyway,

and if you import the existingmodel as for example used by the UML14 implementation you can extend (=generalize) the model elements you wantDo you

know

how to proceed ? Take a look at the UML model for

one

of theexisting cartridges (MagicDraw community

edition

recommended)-- Wouter -----Original Message-----From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]

On

Behalf Of François EricSent: Wednesday, June 30, 2004 5:43 PMTo: [EMAIL PROTECTED]: [Andromda-user] Extending the uml14 metafacadeHi,I would like to build my own metafacade which could

be

used by manycartridges. The purpose is to be able

to

have my cartridges extendthese metafacades instead

of

the uml14 metafacades.For example, lets say I want

to

add a method calledgetOneToOneAssociations to the ClassifierFacade but don't want to modify the uml14 metafacade code (since its not in the implementation). I don't want to implement this as a cartridge metafacade either because it will be used by many cartridges and I would like to

avoid

duplicating code.How can I do this? Can I extend

the

uml14 metafacade and if so how?Otherwise how do I

proceed?Thanks,Francois-------------------------------------------------------This

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