Re: [cme-dev] Composition and Query Language

[Peri Tarr <tarr@xxxxxxxxxx>]

Sorry, I missed item (d), the relationship
to a concern model, as well.

Peri Tarr/Watson/IBM@IBMUS
Sent by: cme-dev-admin@xxxxxxxxxxx

07/21/2004 06:12 PM

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cme-dev

To	cme-dev@xxxxxxxxxxx
cc	Thomas Stets <stets@xxxxxx>
Subject	Re: [cme-dev] Composition and Query Language

Harold, I've had a look through this, but I'm hampered by not understanding
the intended use(s) of this composition language.  It looks as though
it's intended as a general-purpose, compile-time composition notation (unless
I missed the provision for dynamic).  First, is this the case?  Second,
is this the best approach to take (versus, for example, a set of smaller
composition languages that address subsets of activities but provide higher-level
constructs that are easier for people to use--a DSL-ish sort of approach--and
translate down to CCC, where we have PlainWay for the lowest-level and
most powerful language)?  (I'm moderately concerned about what it
would take to do "hello world" here :-).)  Third, where
are you assuming the developers are starting (code? design? anywhere?)?
 And finally, I've missed the relationships (if any were intended)
between this language and (a) the query language (except for bound variables),
(b) AspectJ, and (c) the extraction language. 

Take offline?  Or should I write up details? 

     Peri

Harold Ossher/Watson/IBM@IBMUS
Sent by: cme-dev-admin@xxxxxxxxxxx

07/21/2004 05:45 PM

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To	cme-dev@xxxxxxxxxxx
cc	Thomas Stets <stets@xxxxxx>
Subject	Re: [cme-dev] Composition and Query Language

Hi all,

I finally had a chance to get down some thoughts about the composition
langauge issue. They are very half-baked, and the exposition is very
hurriedly written, but I hope this is enough to spark discussion.

The examples are all from Juri and Thomas's paper (many thanks!), showing
how they would be done. As you'll see, the syntax I have used is a little
different. That's not because I think it reads better - it doesn't - but
because I was going with a very general, extensible syntax, and did it
quickly. I'd be interested in comments of all sorts, including how to
improve the suggested syntax. (I may not be able to respond for a while,
however).

Thanks, Harold

(See attached file: Composition Language v0.doc)



                    
                     
                     
         
            Juri Memmert      
                     
                     
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     [cme-dev] Composition and Query     
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Hi all,

at http://www.jpmdesign.de/papers/CME_Query_and_Composition_Language.pdf
you can find a paper a colleague of mine an I wrote on the current query
language and the to-be-developed composition language for the CME.
We'd be very happy to discuss this if we came up with something you like
(or abhor).


Juri

-----
Desist from enumerating your fowl prior to their emergence from the
shell.

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