Re: Language Oriented Programming

On Tue, 19 Jul 2005 17:45:21 GMT, "H. S. Lahman"
<h.lahman@xxxxxxxxxxx> wrote:
>Another problem is dealing with the computing space. Almost all
>commercial software critically involves mapping a business domain into
>the domain of hardware computational models. One must necessarily
>manipulate the business abstractions in a manner that provides
>optimization in terms of the hardware models. To avoid explicitly
>dealing with that optimization the DSL compiler must provide
>optimization for the computing space. But the only way that can be done
>is if the DSL itself is sufficiently abstract so that it is independent
>of local computing environments. However, that segues to the second
>evolutionary road.

I think I disagree with this somewhat, as I have my own, my very own,
theory (think the old Monty Python routine) that computation is more a
unipolar constructive enterprise than a mapping, but that's another
rant. The use of the term "optimization" sort of jumped out at me
here, aren't we satisficed if it at least works, isn't optimization
sort of a secondary issue?

>If one has sufficient abstraction so that the solution representation is
>independent of the local computing environment, one has a 4GL. To
>provide that level of independence one needs a high degree of
>abstraction. In particular, one needs to be able to abstract business
>concepts directly in those terms simply because one can't use computing
>space terms. That happens to be exactly what OOA does. If one has a
>general purpose language capable of such abstraction, one doesn't need a
>DSL because one can directly abstract exactly the same way the DSL does.

You mean, that's what OOA *tries* to do.

>Bottom line: I agree with Kazakov that there is nothing in LOP that is
>not already addressed in OOA when combined with MDA transformation.
>IOW, it is too little, too late.

I agree, too.

J.


.

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