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Re: [sca-j] Should introduction of @Local annotation (JAVA-3) affect theSemantics of an Unannotated Implementation
Vamsi,
Good catch! Yes, we should make
this change.
Simon
Simon C. Nash, IBM Distinguished Engineer
Member of the IBM Academy of Technology
Tel. +44-1962-815156 Fax +44-1962-818999
C Vamsi <>
28/08/2008 11:14
To
Mike Edwards/UK/IBM@IBMGB
cc
"OASIS Java" <>
Subject
Re: [sca-j] Should introduction of @Local
annotation (JAVA-3) affect the Semantics of an Unannotated Implementation
We may also want to consider that when there is no
@Service annotaion on
the implementation class, the interfaces implemented by the class that
are
annotated with @Remotable (or @Local) will result in a Service.
Currently lines 375-376 in CI spec say:
"Public setter methods that are not included in any interface
specified
by an @Service annotation."
We may have to change this to:
"Public setter methods that are not included in the interface
of any of
the Services provided by the Java component."
This change is required irrespective of @Local annotation.
++Vamsi
Mike Edwards
<mike_edwards@uk.
ibm.com>
To
"OASIS
Java"
28/08/2008 15:10
<>
cc
Subject
Re: [sca-j]
Should introduction of
@Local annotation
(JAVA-3) affect
the Semantics
of an Unannotated
Implementation
Simon,
The algorithm for calculating the componentType of an unannotated
implementation already makes a
distinction dependent on the marking of an interface used by the
implementation, so the different rules
already exist:
Lines 384/385 from the C&I spec:
If its type is complex, then if the type is an interface marked by
@Remotable, then it is a reference; otherwise, it is a property.
The introduction of an @Local annotation would affect this part of the
spec
at least. I would expect that an annotated interface would
be regarded as marking a reference, even if it is marked @Local.
By extension, it is worth asking whether *any* SCA annotation in the
interface implies treating its use as indicating a reference.
Yours, Mike.
Strategist - Emerging Technologies, SCA & SDO.
Co Chair OASIS SCA Assembly TC.
IBM Hursley Park, Mail Point 146, Winchester, SO21 2JN, Great Britain.
Phone & FAX: +44-1962-818014 Mobile: +44-7802-467431
Email:
From: Simon Nash/UK/IBM@IBMGB
To: "OASIS Java" <>
Date: 27/08/2008 18:13
Subjec Re: [sca-j] Should introduction of @Local annotation (JAVA-3)
t: affect the Semantics of an Unannotated Implementation
I take a slightly different view on this. I think an unannotated
implementation is exactly that. I don't think it means that all the
interfaces referenced by the implementation must also be
unannotated. However, I'm open to discussion on the best way to handle
this. Perhaps we need different rules for:
1. Unannotated implementation / unannotated interfaces
2. Unannotated implementation / annotated interfaces
3. Annotated implementation
Simon
Simon C. Nash, IBM Distinguished Engineer
Member of the IBM Academy of Technology
Tel. +44-1962-815156 Fax +44-1962-818999
Mike
Edwards/UK/IBM@IB
MGB
To
"OASIS Java" <>
27/08/2008 10:42
cc
Subject
Re: [sca-j] Should introduction of @Local
annotation (JAVA-3) affect the Semantics of an
Unannotated Implementation
Folks,
An @Local annotation would certainly affect the semantics of an unannotated
implementation.
An interface so marked would clearly indicate something relating to an
SCA
reference.
Yours, Mike.
Strategist - Emerging Technologies, SCA & SDO.
Co Chair OASIS SCA Assembly TC.
IBM Hursley Park, Mail Point 146, Winchester, SO21 2JN, Great Britain.
Phone & FAX: +44-1962-818014 Mobile: +44-7802-467431
Email:
From: C Vamsi <>
To: Simon Nash/UK/IBM@IBMGB
Cc:
Date: 27/08/2008 09:09
Subje [sca-j] Should introduction of @Local annotation (JAVA-3) affect
ct: the Semantics of an Unannotated Implementation
Simon,
Should the introduction of @Local annotation affect the "Semantics
of an
Unannotated Implementation" (section 8 in sca-javaci-draft-20070926.doc)
where we are currently using only interfaces marked with @Remotable in
computing the references/properties of an implementation?
++Vamsi
Simon Nash
<>
To
27/08/2008 12:57
cc
Subject
Re: [sca-j] Introspecting
services
offered by a Java implementation
class without @Service
Raymond,
Minor nit: the @OneWay annotation applies to a method, not to an
interface. Your example should be updated to show this.
In your example, these services are local. Issue JAVA-3 has proposed
a new
annotation @Local that could be used on Interface1and Interface2 to allow
them to be recognized by the introspection algorithm.
I believe this discussion can be handled under JAVA-3 and there is no need
to create a new issue.
Simon
Simon C. Nash, IBM Distinguished Engineer
Member of the IBM Academy of Technology
Tel. +44-1962-815156 Fax +44-1962-818999
Raymond Feng
<>
To
25/08/2008 17:25
cc
Subject
[sca-j]
Introspecting
services
offered by a Java
implementation
class without
@Service
Hi,
In Java Component Implementation Specification 1.00, we have the following
statements:
143 1.2.1.3. Introspecting services offered by a Java implementation
144 In the cases described below, the services offered by a Java
implementation class may be determined
145 through introspection, eliding the need to specify them using @Service.
The following algorithm is used to
146 determine how services are introspected from an implementation class:
147 If the interfaces of the SCA services are not specified with the
@Service annotation on the implementation
148 class, it is assumed that all implemented interfaces that have been
annotated as @Remotable are the
149 service interfaces provided by the component. If none of the
implemented interfaces is remotable, then by
150 default the implementation offers a single service whose type is the
implementation class.
What if an interface is annotated with SCA annotations such as @OneWay
or
@Callback?
For example:
public class MyServiceImpl implements Interface1, Interface2 {
}
@Callback(CallbackInterface.class)
public interface Interface1 {
}
@OneWay
public interface Interface2 {
}
By the spec, there is only one service named MyServiceImpl. But isn't it
more natural that we should find two SCA services: Interface1 and
Interface2? Please clarify.
Thanks,
Raymond
Raymond Feng
Senior Software Engineer, Open Source SCA Development, Apache Tuscany
Project
IBM Bay Area Lab, 1001 E Hillsdale Blvd, Suite 400, Foster City, CA 94404,
USA
E-mail: , Notes: Raymond Feng/Burlingame/IBM, Tel:
650-645-8117, T/L: 367-8117
Web & Blog: www.enjoyjava.com- The Cyber Cafeteria to Enjoy Java
Unless stated otherwise above:
IBM United Kingdom Limited - Registered in England and Wales with number
741598.
Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6
3AU
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Unless stated otherwise above:
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741598.
Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6
3AU
Unless stated otherwise above:
IBM United Kingdom Limited - Registered in England and Wales with number
741598.
Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6
3AU
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