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Posted to dev@tuscany.apache.org by Raymond Feng <en...@gmail.com> on 2007/04/13 07:28:12 UTC
How to tell if a component reference is promoted by a comosite reference?
Hi,
With the current assembly model, how can we tell if a component reference is
promoted by a comosite reference? I can get all the promoted references from
CompositeReference but not the other way.
Thanks,
Raymond
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Re: How to tell if a component reference is promoted by a comosite
reference?
Posted by Jean-Sebastien Delfino <js...@apache.org>.
Venkat,
comments inline.
Venkata Krishnan wrote:
> Hi,
>
> What I menetion here is only from the perspective of the 'future' plan
> for
> this.
>
>> From what I understand of the assembly model, I am not so comfortable
>> about
> adding 'promotedAs'. There are probably two options that I can think of
> which is 1) add the Composite Reference name to the 'tagets' list of the
> component reference or 2) maintain a map in CompositeUtil with
> ComponentReference->PromotedReference relationship just to be used in the
> 'wire' method.
>
> Thanks
>
I agree with you. Like I said earlier in that thread I'm not too keen on
having two relationships mirroring each other in the model, and I also
think that the more natural relationship to keep is the
CompositeReference --> ComponentReference one. The good news is that
I've looked at the Deployer code to try to fix some of the problems I
was seeing handling nested composites, and with the changes I started to
make to it yesterday, I don't really a use case for having this
promotedAs relationship anymore. So, if I manage to simplify the code in
Deployer a little bit further today, we will be able to remove this
promotedAs.
> - Venkat
>
> On 4/13/07, Jean-Sebastien Delfino <js...@apache.org> wrote:
>>
>> Simon Laws wrote:
>> > On 4/13/07, Raymond Feng <en...@gmail.com> wrote:
>> >>
>> >> Hi,
>> >>
>> >> With the current assembly model, how can we tell if a component
>> >> reference
>> >> is
>> >> promoted by a comosite reference? I can get all the promoted
>> references
>> >> from
>> >> CompositeReference but not the other way.
>> >>
>> >> Thanks,
>> >> Raymond
>> >>
>> >>
>> >> ---------------------------------------------------------------------
>> >> To unsubscribe, e-mail: tuscany-dev-unsubscribe@ws.apache.org
>> >> For additional commands, e-mail: tuscany-dev-help@ws.apache.org
>> >>
>> >> If the model is a true reflection of what appears in the SCDL then I
>> > assume you would have to loop over all the references in the composite
>> > that
>> > contains the component in question and test if the componet
>> reference is
>> > being promoted. I know that isn't telling you anything you don't
>> already
>> > know but it's just and excuse to add a related question to this thread
>> >
>> > Is the philosophy with the assembly model to have it represent
>> precisely
>> > what appears in the SCDL or is there room to include value add, for
>> > example,
>> > links from components references to the composite references that
>> promote
>> > them?
>> >
>> > Simon
>> >
>>
>> We currently have: CompositeReference.promotedReferences --> 0..n
>> ComponentReference.
>>
>> We could have the relationship in the other direction:
>> ComponentReference.promotedAs --> 0..n CompositeReference.
>>
>> In the future, I would prefer to have only one of the two above
>> relationships (to avoid confusion with which one needs to be populated
>> when you read or construct model instances), but maybe we can add the
>> second relationship for now and populate it in CompositeUtil.wire().
>>
>> Would that help?
>>
>> --
>> Jean-Sebastien
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: tuscany-dev-unsubscribe@ws.apache.org
>> For additional commands, e-mail: tuscany-dev-help@ws.apache.org
>>
>>
>
--
Jean-Sebastien
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Re: How to tell if a component reference is promoted by a comosite reference?
Posted by Venkata Krishnan <fo...@gmail.com>.
Hi,
What I menetion here is only from the perspective of the 'future' plan for
this.
>From what I understand of the assembly model, I am not so comfortable about
adding 'promotedAs'. There are probably two options that I can think of
which is 1) add the Composite Reference name to the 'tagets' list of the
component reference or 2) maintain a map in CompositeUtil with
ComponentReference->PromotedReference relationship just to be used in the
'wire' method.
Thanks
- Venkat
On 4/13/07, Jean-Sebastien Delfino <js...@apache.org> wrote:
>
> Simon Laws wrote:
> > On 4/13/07, Raymond Feng <en...@gmail.com> wrote:
> >>
> >> Hi,
> >>
> >> With the current assembly model, how can we tell if a component
> >> reference
> >> is
> >> promoted by a comosite reference? I can get all the promoted references
> >> from
> >> CompositeReference but not the other way.
> >>
> >> Thanks,
> >> Raymond
> >>
> >>
> >> ---------------------------------------------------------------------
> >> To unsubscribe, e-mail: tuscany-dev-unsubscribe@ws.apache.org
> >> For additional commands, e-mail: tuscany-dev-help@ws.apache.org
> >>
> >> If the model is a true reflection of what appears in the SCDL then I
> > assume you would have to loop over all the references in the composite
> > that
> > contains the component in question and test if the componet reference is
> > being promoted. I know that isn't telling you anything you don't already
> > know but it's just and excuse to add a related question to this thread
> >
> > Is the philosophy with the assembly model to have it represent precisely
> > what appears in the SCDL or is there room to include value add, for
> > example,
> > links from components references to the composite references that
> promote
> > them?
> >
> > Simon
> >
>
> We currently have: CompositeReference.promotedReferences --> 0..n
> ComponentReference.
>
> We could have the relationship in the other direction:
> ComponentReference.promotedAs --> 0..n CompositeReference.
>
> In the future, I would prefer to have only one of the two above
> relationships (to avoid confusion with which one needs to be populated
> when you read or construct model instances), but maybe we can add the
> second relationship for now and populate it in CompositeUtil.wire().
>
> Would that help?
>
> --
> Jean-Sebastien
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tuscany-dev-unsubscribe@ws.apache.org
> For additional commands, e-mail: tuscany-dev-help@ws.apache.org
>
>
Re: How to tell if a component reference is promoted by a comosite
reference?
Posted by Jean-Sebastien Delfino <js...@apache.org>.
Simon Laws wrote:
> On 4/13/07, Raymond Feng <en...@gmail.com> wrote:
>>
>> Hi,
>>
>> With the current assembly model, how can we tell if a component
>> reference
>> is
>> promoted by a comosite reference? I can get all the promoted references
>> from
>> CompositeReference but not the other way.
>>
>> Thanks,
>> Raymond
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: tuscany-dev-unsubscribe@ws.apache.org
>> For additional commands, e-mail: tuscany-dev-help@ws.apache.org
>>
>> If the model is a true reflection of what appears in the SCDL then I
> assume you would have to loop over all the references in the composite
> that
> contains the component in question and test if the componet reference is
> being promoted. I know that isn't telling you anything you don't already
> know but it's just and excuse to add a related question to this thread
>
> Is the philosophy with the assembly model to have it represent precisely
> what appears in the SCDL or is there room to include value add, for
> example,
> links from components references to the composite references that promote
> them?
>
> Simon
>
We currently have: CompositeReference.promotedReferences --> 0..n
ComponentReference.
We could have the relationship in the other direction:
ComponentReference.promotedAs --> 0..n CompositeReference.
In the future, I would prefer to have only one of the two above
relationships (to avoid confusion with which one needs to be populated
when you read or construct model instances), but maybe we can add the
second relationship for now and populate it in CompositeUtil.wire().
Would that help?
--
Jean-Sebastien
---------------------------------------------------------------------
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Re: How to tell if a component reference is promoted by a comosite reference?
Posted by Simon Laws <si...@googlemail.com>.
On 4/13/07, Raymond Feng <en...@gmail.com> wrote:
>
> Hi,
>
> With the current assembly model, how can we tell if a component reference
> is
> promoted by a comosite reference? I can get all the promoted references
> from
> CompositeReference but not the other way.
>
> Thanks,
> Raymond
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tuscany-dev-unsubscribe@ws.apache.org
> For additional commands, e-mail: tuscany-dev-help@ws.apache.org
>
> If the model is a true reflection of what appears in the SCDL then I
assume you would have to loop over all the references in the composite that
contains the component in question and test if the componet reference is
being promoted. I know that isn't telling you anything you don't already
know but it's just and excuse to add a related question to this thread
Is the philosophy with the assembly model to have it represent precisely
what appears in the SCDL or is there room to include value add, for example,
links from components references to the composite references that promote
them?
Simon