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Subject: Re: [sca-assembly] ISSUE 37: Need to clarify contents of an SCA Domainvirtual composite
I didn't say that it must be supported, only that there is provision to
support the use case you're after without polluting the Domain with
extraneous constructs.
The last paragraph in that section hints at your use case. It reads:
Also, in some use cases, a contribution may include only implementation
code (e.g. PHP scripts). It should then be possible for those to be
given component names by a (possibly generated) composite that is added
into the installed contribution, without having to modify the packaging.
In your example, the composite is an implementation. The generated
composite referred to above is the deployment composite I described.
Dave Booz
STSM, SCA and WebSphere Architecture
Co-Chair OASIS SCA-Policy TC
"Distributed objects first, then world hunger"
Poughkeepsie, NY (845)-435-6093 or 8-295-6093
e-mail:booz@us.ibm.com
http://washome.austin.ibm.com/xwiki/bin/view/SCA2Team/WebHome
Simon Nash
<NASH@uk.ibm.com>
To
05/13/2008 09:34 sca-assembly@lists.oasis-open.org
AM cc
Subject
Re: [sca-assembly] ISSUE 37: Need
to clarify contents of an SCA
Domain virtual composite
Dave,
I've read section 12.4.2 and it doesn't seem (to me) to say what you are
saying here about "generating a deployment composite that contains one
component, whose implementation is this composite". Can you help me by
clarifying which of the words in 12.4.2 imply that this must be supported?
Simon
Simon C. Nash, IBM Distinguished Engineer
Member of the IBM Academy of Technology
Tel. +44-1962-815156 Fax +44-1962-818999
David Booz
<booz@us.ibm.com>
To
13/05/2008 13:51 sca-assembly@lists.oasis-open.org
cc
Subject
Re: [sca-assembly] ISSUE 37: Need to
clarify contents of an SCA Domain
virtual composite
Simon, you said:
" I'd like to be able to test the composite and its promoted services and
references before writing implementations that use it. "
I agree with your use case. The way to accomplish it is for your runtime's
deployment infrastructure to give you the option of generating a deployment
composite that contains one component, whose implementation is this
composite. This pattern is described in the packaging and deployment
section of the Assembly spec. This is precisely why we have the 'add
deployment composite' function.
My proposal doesn't change this use case in any way.
Dave Booz
STSM, SCA and WebSphere Architecture
Co-Chair OASIS SCA-Policy TC
"Distributed objects first, then world hunger"
Poughkeepsie, NY (845)-435-6093 or 8-295-6093
e-mail:booz@us.ibm.com
http://washome.austin.ibm.com/xwiki/bin/view/SCA2Team/WebHome
Simon Nash
<NASH@uk.ibm.com>
To
05/13/2008 04:51 sca-assembly@lists.oasis-open.org
AM cc
Subject
Re: [sca-assembly] ISSUE 37: Need
to clarify contents of an SCA
Domain virtual composite
Here's a simple example of the use case I'm concerned about losing if we
were to adopt the proposed resolution discussed on last week's call:
<composite xmlns="http://www.osoa.org/xmlns/sca/1.0";
targetNamespace="http://mynamespace";
name="mycomposite">
<service name="MyService2" promote="MyServiceComponent">
<binding.ws uri="http://localhost:8086/MyServiceComponent"; />
</service>
<component name="MyServiceComponent">
<implementation.java class="myserver.MyServiceImpl" />
<service name="MyService">
<interface.java interface="myserver.MyService" />>
</service>
</component>
</composite>
The general case that this example illustrates is a composite service that
promotes and configures a component service. The composite-level
configuration could be a different binding, a different set of intents, a
restricted set of operations exposed on the interface, etc. The composite
could have promoted references as well as promoted services.
The composite would be usable as an implementation, even though in this
case (maybe a unit test environment) it is being deployed directly into the
domain. I'd like to be able to test the composite and its promoted
services and references before writing implementations that use it.
Simon
Simon C. Nash, IBM Distinguished Engineer
Member of the IBM Academy of Technology
Tel. +44-1962-815156 Fax +44-1962-818999
Scott Vorthmann
<scottv@tibco.com>
To
14/01/2008 16:55 David Booz <booz@us.ibm.com>
cc
<sca-assembly@lists.oasis-open.org>
Subject
[sca-assembly] ISSUE 37: Need to
clarify contents of an SCA Domain
virtual composite
http://www.osoa.org/jira/browse/ASSEMBLY-37
On Jan 10, 2008, at 1:25 PM, David Booz wrote:
TARGET: SCA Assembly spec WD02 - section 12.1 (though this is not where I'd
write the solution text for this issue)
DESCRIPTION: Section 12.1 describes the SCA Domain as a virtual composite
which contains deployed components. The spec does not say whether or not
the virtual SCA Domain contains composite level properties, references
and/or services from composites that have been deployed into the SCA
Domain. The spec needs to be clarified one way or the other.
PROPOSAL: Composite level properties, services and references from
deployment composites are not deployed into the virtual SCA Domain
composite.
This completes my AI from the Java TC (Jan 10, 2008).
Dave Booz
STSM, SCA and WebSphere Architecture
Co-Chair OASIS SCA-Policy TC
"Distributed objects first, then world hunger"
Poughkeepsie, NY (845)-435-6093 or 8-295-6093
e-mail:booz@us.ibm.com
http://washome.austin.ibm.com/xwiki/bin/view/SCA2Team/WebHome
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