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Proxy resolval for EAttribute [message #660246]

Thu, 17 March 2011 10:35

Eclipse User

Hi,

I try to utilize an EAttribute in terms of a remote reference, since
using an EReference is not suitable in my special case for several reasons.
However, I have troubles resolving the Proxy.
Are EAttribute-Proxies generally intended to be resolved automatically
analog to EReferences?

Regards, Daniel

Re: Proxy resolval for EAttribute [message #660256 is a reply to message #660246]

Thu, 17 March 2011 11:02

Eclipse User

Originally posted by: richkulp.us.NOSPAM.ibm.com

Hi,

EAttributes are just straight java class instances, such as String,
Integer, or some other class. These can't be "foreign" because foreign
refers to EMF EObjects in another EObject/Resource. Only EObjects have
the ability to be foreign and referenced.

--
Thanks,
Rich Kulp

Re: Proxy resolval for EAttribute [message #660257 is a reply to message #660246]

Thu, 17 March 2011 11:03

Eclipse User

Daniel,

Comments below.

Daniel Strueber wrote:
> Hi,
>
> I try to utilize an EAttribute in terms of a remote reference, since
> using an EReference is not suitable in my special case for several
> reasons.
Those reasons are?
> However, I have troubles resolving the Proxy.
> Are EAttribute-Proxies generally intended to be resolved automatically
> analog to EReferences?
No, absolutely not.
>
> Regards, Daniel

Re: Proxy resolval for EAttribute [message #660300 is a reply to message #660257]

Thu, 17 March 2011 13:48

Eclipse User

Ed Merks wrote:
>> I try to utilize an EAttribute in terms of a remote reference, since
>> using an EReference is not suitable in my special case for several
>> reasons.
>Those reasons are?

Most basically, I have a set of model instances that are
interconnected by remote EReferences, and I want to pass
them on to an external infrastructure that performs a
certain "for all" check on all EReferences, but is designed
to deal with local EReferences only. So my idea was to use
EAttributes to distinguish the remote from the local
references. I'm having different ideas for workarounds,
but none of them is really neat, so I thought of giving this
a try.

So thanks to both of you!

Re: Proxy resolval for EAttribute [message #660317 is a reply to message #660300]

Thu, 17 March 2011 16:10

Eclipse User

Daniel,

Comments below.

Daniel Strueber wrote:
> Ed Merks wrote:
>>> I try to utilize an EAttribute in terms of a remote reference, since
>>> using an EReference is not suitable in my special case for several
>>> reasons.
>> Those reasons are?
>
> Most basically, I have a set of model instances that are
> interconnected by remote EReferences, and I want to pass
> them on to an external infrastructure that performs a
> certain "for all" check on all EReferences, but is designed
> to deal with local EReferences only. So my idea was to use
> EAttributes to distinguish the remote from the local
> references. I'm having different ideas for workarounds,
> but none of them is really neat, so I thought of giving this
> a try.
Nothing you said convinces me that you can't just use the existing proxy
mechanism. There are many interesting ways to specialize how proxies
are resolve and it's not so difficult to process a model instance
without resolving any proxies.

Maybe if you explain in a little more detail I could suggest some ideas
you might try.
>
> So thanks to both of you!

Re: Proxy resolval for EAttribute [message #660432 is a reply to message #660317]

Fri, 18 March 2011 08:04

Eclipse User

Hi Ed,

Daniel and me intended to kind of eliminate remote references from a
transformation engine's perspective in order to perform transformations
on local models only while being embedded in a larger context.

However, we have found a proper way of dealing with this without the
need of introducing additional abnormal behavior to EMF models, as this
is rather a concern of the transformation engine than of EMF.

Thanks for your help anyway.

Stefan

Am 17.03.2011 21:10, schrieb Ed Merks:
> Daniel,
>
> Comments below.
>
> Daniel Strueber wrote:
>> Ed Merks wrote:
>>>> I try to utilize an EAttribute in terms of a remote reference, since
>>>> using an EReference is not suitable in my special case for several
>>>> reasons.
>>> Those reasons are?
>>
>> Most basically, I have a set of model instances that are
>> interconnected by remote EReferences, and I want to pass
>> them on to an external infrastructure that performs a
>> certain "for all" check on all EReferences, but is designed
>> to deal with local EReferences only. So my idea was to use
>> EAttributes to distinguish the remote from the local
>> references. I'm having different ideas for workarounds,
>> but none of them is really neat, so I thought of giving this
>> a try.
> Nothing you said convinces me that you can't just use the existing proxy
> mechanism. There are many interesting ways to specialize how proxies
> are resolve and it's not so difficult to process a model instance
> without resolving any proxies.
>
> Maybe if you explain in a little more detail I could suggest some ideas
> you might try.
>>
>> So thanks to both of you!

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