On Jun 21, 2006, at 4:48 AM, cr22rc wrote:
I'd like to help out on this and also the SPI analysis work you
spoke of. Per the samples I had some thoughts that instead of just
jumping straight to them is to add some more for "baby steps" in
bring up. For example I'd like to see as starters in a J2SE
environment the very simplest of composite with a Java component
being loaded with the minimal amount of any wiring. I was
wondering if I could use the initeager to somehow just have it
instantiate a single instance that would you guessed it display
"hello world" to console.
I can take a look at doing this over the next few days in core2.
Not sure if that is possible still learning some of this code. If
we could get that to work first it would be great for all to use in
a debugger to see the system boot strap it self. From there move
on to converting the other samples. I think with bigbank we'll
need to maybe think (brain storm) some on how to best exhibit the
new recursive model.
BigBank I think needs a re-write. When we originally wrote it in the
spec group, the intention was to show the benefits and ease-of-use
for SCA. Since then, it's kind of evolved into a petstore-type
application that pulls in SDO and DAS. While I like those
technologies, I'd like to see BigBank put on a diet so that there is
a version people just interested in SCA can reference. Also, I'd like
it to show more of the value-add around SCA as opposed to just
invoking a web service since people outside of the SCA collaboration
and Tuscany project have questioned me as to why Tuscany is needed if
there are things like: http://seam.demo.jboss.com/home.seam. For me,
the value in SCA is around assembly, policies and conversations, so
"showcase" features could be:
- dynamic re-wiring
- switching transport protocols
- conversations and non-blocking/async behavior
- introduction of policy
I think we'll want to show both composites being used as components
and using composites through inclusion (aka fragments). I also
think we need to eventually start showing some more examples with
some interesting complex properties being set.
Jean-Sebastien Delfino wrote:
The last few weeks we've been talking about composites and
recursive composition so much... and today I looked for a sample
showing the new recursive composition model in our whole code
base, including the head and our various sandboxes... and couldn't
find any. I think it'll help all of us get our heads around this
new model if we can see a few samples. Could somebody point me to
a recursive composition sample if we have any and I missed it?
Is anybody curious and interested in trying to port a few of our
existing samples to the new recursive model? I guess the update of
the SCA spec describing the recursive composition is not public
yet, but the materials presented at JavaOne are public as far as I
know, and should be sufficient to develop samples leveraging the
new recursive composition model.
If anybody is interested in developing sample scenarios that
demonstrate the value of the recursive composition, please let me
know, we can work together on this. I'd like to start this
activity in parallel with the SPI analysis work that I'm currently
doing.
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