RE: [sca-j] NEW ISSUE: Catch 22 when trying to prevent propertyintrospection

[David Booz <booz@us.ibm.com>]

Mark, thx for logging it, my apologies for missing it.

Simon, Did you intentionally leave out the other side of the same problem? A component that does not want to expose a service but does want to expose references and/or properties?

Both of these are corner cases. Just wondering why you focused on one vs. the other.

Dave Booz
STSM, BPM and SCA Architecture
Co-Chair OASIS SCA-Policy TC and SCA-J TC
"Distributed objects first, then world hunger"
Poughkeepsie, NY (845)-435-6093 or 8-295-6093
e-mail:booz@us.ibm.com

"Mark Combellack" <mcombellack@avaya.com> wrote on 08/27/2009 08:09:23 AM:

> [image removed]
>
> RE: [sca-j] NEW ISSUE: Catch 22 when trying to prevent property introspection
>
> Mark Combellack
>
> to:
>
> Simon Nash, OASIS Java
>
> 08/27/2009 08:10 AM
>
> Hi Simon,
>
> I have raised this new issue as JAVA-181. See:
>
> http://www.osoa.org/jira/browse/JAVA-181
>
> Thanks,
>
> Mark
>
> > -----Original Message-----
> > From: Simon Nash [mailto:oasis@cjnash.com]
> > Sent: 26 August 2009 23:39
> > To: OASIS Java
> > Subject: [sca-j] NEW ISSUE: Catch 22 when trying to prevent property
> > introspection
> >
> > TARGET: POJO Component Implementation
> >
> > DESCRIPTION: Catch 22 when trying to prevent property introspection
> >
> > Section 8.2 of JavaCI states that public and protected fields of
> > simple types such as "int" are automatically introspected as
> > SCA properties if the implementation class does not contain any
> > @Reference or @Property annotations.
> >
> > This rule means that an implementation class without any SCA
> properties
> > or references will accidentally trigger the default introspection
> > algorithm, with the result that any public or protected "int" fields
> > will be incorrectly introspected as SCA properties (catch 22).
> Because
> > there are no intended SCA properties or references, the author of the
> > class cannot add any @Property or @Reference annotations to the class
> > and is therefore unable to prevent the default introspection algorithm
> > from being used.
> >
> > PROPOSAL:
> >
> > Change the spec to say that the algorithm in section 8.2 only
> > applies if the implementation class has no @Service, @Property, or
> > @Reference annotations.  This allows the default introspection
> > algorithm to be disabled by adding an explicit @Service annotation.
> >
> >
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