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From "Jon Lewis" <wis...@gmail.com>
Subject Re: couple newbie questions
Date Sun, 06 Aug 2006 03:54:43 GMT
thanks Kelvin!


On 8/5/06, kelvin goodson <kelvingoodson@gmail.com> wrote:
>
> Jon,
>
>    I can answer the SDO/EMF bit of your question.  The short answer is
> that
> EMF is an implementation dependency of our SDO implementation which unless
> you have some particular requirement that the SDO 2 spec doesnt cover,
> then
> you don't need to worry about it.
>
> The longer answer is that the eclipse implementation of SDO 1 is based
> upon
> EMF, and the SDO 1 spec effort had two classes of programmer in
> mind,  those
> who dealt with the getting and setting values on the graph,  and those who
> created graphs and dealt with back end stores (Data Access Service
> programmers).  The SDO 1 API only claimed to support the first class of
> programmer,  and the DAS programmers would need to get down and dirty with
> the facilities offered by the implementation (i.e. EMF for the Eclipse
> SDO).  SDO 2 is considerably more mature,  and the Tuscany implementation
> has its SDOUtil class to try to plug any gaps that are found in the SDO 2
> spec (any such gaps being fed back into the 2.1 and 3.0 spec efforts).  So
> at the moment there are a number of people who developed code against SDO
> 1
> who are figuring out how the SDO 2 API handles those things they had
> previously done in EMF,  but as you are a newbie I guess you don't fit
> into
> that category.
>
> My suggestion to you is that you just focus on the SDO API,  and consider
> EMF as something under the hood that you can forget about.  If you do find
> something that you can't do with SDO or with our SDOUtil class then if you
> could feed back the issue to us that would be great.
>
>
>
> On 05/08/06, Jon Lewis <wise29@gmail.com> wrote:
> >
> > hi All,
> >
> >     I'm going through the Building you first Application doc.   When
> > creating the subsystem WebclientModuleComponent, there's a reference to
> > the
> > AccountModuleComponent, which is the Component for the external service,
> > Account Service.  Why is this needed?   The moduleComponent,
> > AccountModuleComponent, doesn't have any references.
> >
> >     also, how does EMF factor into SCA/SDO?   I thought EMF was a
> modeling
> > framework, so I'm a little confused here.  I am sure this is a question
> > that's most likely too long for an email response, so if you could point
> > me
> > to some documentation that would be fine.
> >
> > thanks in advance!...johnny
> >
> >
>
>
> --
> Best Regards
> Kelvin Goodson
>
>

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