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   Re: [xml-dev] SW-Mapping to OOP Model

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Hmm, IANAL but there's seems a bit of a gap between the
declarative+operational semantics of most OO languages and straight
declarative semantics around the RDF stack. Having said that, they do
have pretty much the same theoretical (and historical) foundations -
sets, then frames and all that.

I do think there are a lot of relatively unexplored regions (and
tuplespaces [1]) around here (on my rainy-day list is to play with
some of the RDF/OWL inheritance logic(/DL subsumption, see [2]) in
Smalltalk, replacing the standard mechanisms in places).
But as you suggest, there's probably a lot of fun potential around
automatic interaction in the Web environment.

fyi, OWL-S [3] is about services, again it's essentially descriptive,
with WSDL grounding.


[1] http://c2.com/cgi/wiki?TupleSpace
[2] http://www.inf.unibz.it/~franconi/dl/course/
[3] http://www.daml.org/services/owl-s/

On Sat, 13 Nov 2004 13:54:47 +0530, Garfield <xmlstar@gmail.com> wrote:
> Hi All,
>    Thanks for the overflowing information on the Semantic Web, and its
> mysteries. Seems to be demystified for the most part of it. Well, I
> had another thought in my mind, which I thought worthwhile sharing
> with you folks.
> Are there mappings defined between the Semantic Web and Programming Models ?
> For the most part, schemas and Class definitions resemble in the way
> they are modeled by
> a) The way they define the scope of an Object
> b) The way it allows extensibility
> c) The way it allows constricting values that Objects can hold
> d) Helping avoid name clashes through packages/ namespace declarations.
> e) Reference of Objects within another definition
> f)  its goes on ...... gurus cd add more
> Well, they mostly map one to one, except that captruing an XML Schema
> as a Java Object might not be trivial in some cases. I've read some
> articles on it sometime back.
> But what about inherent programmatic support for semantic
> discovery/integration of Objects ? Is there an existing infrastructure
> that allows Objects to seamlessly discover/interact based on their
> semantic annotations, in a synchronous /asynchronous environment,
> without needing to make them web service enabled?.
> For instance, while designing a WSDL, the Modeler can annotate the
> Port types and Operations for usage by Service Requestors or Agents.
> Similarly, in the Programming Model, a Class/Interface, methods and
> even critical fields can be annotated through some existing mechanism
> and expose them for usage by the consumer objects.
> This looks similar to a Javadoc that describes what a class can do,
> what operations it supports, and what are its fields. What I am asking
> for something more than a documentation, but a more formal definition.
> It will help understand what a class is, and what it can do, and have
> common agreement between all objects on the usage of a particular
> object.
> I am not sure if this has just some theoretical relevance, or if this
> is just trash - I am just feeling too enthu about this thought -
> wanted your thoughts and light on this.
> -Gar
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