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Posted to user@tuscany.apache.org by Stepan Ilchenko <s_...@mail.ru> on 2007/01/08 16:01:35 UTC
Initializing of readonly properties in SDO
How can I initialize SDO readonly property using SDO API or Tuscany
Implementation? I'm trying to make my own DAS from specific source and
I need to initially set readonly property. It's not a default value,
it's value that I can't change later by SDO API.
I thought I could change it before I started logging in DataGraph, but
I couldn't because of the exception: "The feature 'ID' is not a valid changeable
feature".
Thanks,
Stepan
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Re: Initializing of readonly properties in SDO
Posted by Frank Budinsky <fr...@ca.ibm.com>.
This was one of the issues that the SDO spec collaboration workgroup was
looking at for SDO version 2.1, but unfortunately it wasn't resolved in
time for 2.1 so now is on the 3.0 list. At Tuscany, we were waiting for
the spec to set the direction before implementing something for this, so
it's not currently supported.
If you need to use readonly properties today, then if you are using static
SDOs you can, as Dan mentioned, add set methods into your generated
classes. If you are using Dynamic SDO we'll need to add some methods to
DynamicDataObjectImpl/SDOUtil to let you call some of the internal EMF
methods to do this. If you need this urgently, please open a JIRA and
we'll see what we can do (maybe you would like to help?). Otherwise, I
would avoid using readonly properties for now, and wait for SDO to define
a proper SPI for doing this.
Frank
"Luciano Resende" <lu...@gmail.com> wrote on 01/08/2007 11:52:47 AM:
> Hi Stepan
>
> I was chatting with Brent, that tried before using readony properties
in
> our Tuscany DAS implementation and wasn't able to have success doing
that.
> You will need some help from the SDO guys, sorry.
>
> May I ask you what datasource you are trying to handle with your own
DAS
> ?
>
> --
> Luciano Resende
> http://people.apache.org/~lresende
>
> On 1/8/07, Dan Murphy <dm...@googlemail.com> wrote:
> >
> > Hi Stephan,
> > I think this is a very interesting point. The spec says that setting
> > readonly properties is the responsibility of the DAS, without saying
how
> > the
> > DAS should do this !
> >
> > One way I have got around this was to generate static classes and
create
> > my
> > own setter for read only properties, but this is only any good for
static
> > SDOs.
> >
> > Perhaps the DAS chaps can let is know how they do it... I suspect
you'll
> > need to cast and dip into the actual DynamicDataObjectImpl class
> >
> > On 08/01/07, Stepan Ilchenko <s_...@mail.ru> wrote:
> > >
> > > How can I initialize SDO readonly property using SDO API or Tuscany
> > > Implementation? I'm trying to make my own DAS from specific source
and
> > > I need to initially set readonly property. It's not a default value,
> > > it's value that I can't change later by SDO API.
> > >
> > > I thought I could change it before I started logging in DataGraph,
but
> > > I couldn't because of the exception: "The feature 'ID' is not a
valid
> > > changeable
> > > feature".
> > >
> > > Thanks,
> > > Stepan
> > >
> > >
> > >
> > >
> > >
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> > > To unsubscribe, e-mail: tuscany-user-unsubscribe@ws.apache.org
> > > For additional commands, e-mail: tuscany-user-help@ws.apache.org
> > >
> > >
> >
> >
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Re: Initializing of readonly properties in SDO
Posted by Luciano Resende <lu...@gmail.com>.
Hi Stepan
I was chatting with Brent, that tried before using readony properties in
our Tuscany DAS implementation and wasn't able to have success doing that.
You will need some help from the SDO guys, sorry.
May I ask you what datasource you are trying to handle with your own DAS
?
--
Luciano Resende
http://people.apache.org/~lresende
On 1/8/07, Dan Murphy <dm...@googlemail.com> wrote:
>
> Hi Stephan,
> I think this is a very interesting point. The spec says that setting
> readonly properties is the responsibility of the DAS, without saying how
> the
> DAS should do this !
>
> One way I have got around this was to generate static classes and create
> my
> own setter for read only properties, but this is only any good for static
> SDOs.
>
> Perhaps the DAS chaps can let is know how they do it... I suspect you'll
> need to cast and dip into the actual DynamicDataObjectImpl class
>
> On 08/01/07, Stepan Ilchenko <s_...@mail.ru> wrote:
> >
> > How can I initialize SDO readonly property using SDO API or Tuscany
> > Implementation? I'm trying to make my own DAS from specific source and
> > I need to initially set readonly property. It's not a default value,
> > it's value that I can't change later by SDO API.
> >
> > I thought I could change it before I started logging in DataGraph, but
> > I couldn't because of the exception: "The feature 'ID' is not a valid
> > changeable
> > feature".
> >
> > Thanks,
> > Stepan
> >
> >
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: tuscany-user-unsubscribe@ws.apache.org
> > For additional commands, e-mail: tuscany-user-help@ws.apache.org
> >
> >
>
>
Re: Initializing of readonly properties in SDO
Posted by Dan Murphy <dm...@googlemail.com>.
Hi Stephan,
I think this is a very interesting point. The spec says that setting
readonly properties is the responsibility of the DAS, without saying how the
DAS should do this !
One way I have got around this was to generate static classes and create my
own setter for read only properties, but this is only any good for static
SDOs.
Perhaps the DAS chaps can let is know how they do it... I suspect you'll
need to cast and dip into the actual DynamicDataObjectImpl class
On 08/01/07, Stepan Ilchenko <s_...@mail.ru> wrote:
>
> How can I initialize SDO readonly property using SDO API or Tuscany
> Implementation? I'm trying to make my own DAS from specific source and
> I need to initially set readonly property. It's not a default value,
> it's value that I can't change later by SDO API.
>
> I thought I could change it before I started logging in DataGraph, but
> I couldn't because of the exception: "The feature 'ID' is not a valid
> changeable
> feature".
>
> Thanks,
> Stepan
>
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tuscany-user-unsubscribe@ws.apache.org
> For additional commands, e-mail: tuscany-user-help@ws.apache.org
>
>