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From: Ted Dennison <dennison@telepath.com>
Subject: Re: Message passing code
Date: 1999/06/25
Message-ID: <7l0s5k$g32$1@nnrp1.deja.com>#1/1
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Date: 1999-06-25T00:00:00+00:00
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In article <7l0gj5$b62$1@nnrp1.deja.com>,
  Jim Rogers <ada_daddy@my-deja.com> wrote:
> In article <3772AD75.F5E8AAED@hiwaay.net>,
>   Bruce or Tracy <bljacobs@hiwaay.net> wrote:
> > At work, we are currently using Ada.Stream.  This is
> > the mechanism for (at least parts of) HLA (High
> > Level Architecture) where separate simulations
> > communicate via a Run Time Infrastructure package.
>
> Ada.Streams is a very good tool. It is not, however, a standard
> beyond the world of Ada. Ada.Streams is a tool for converting
> between a binary data stream and internal Ada object representation.
> The binary data stream format must still be "standardized", or
> at least agreed upon by all applications cooperating in a
> communication community.

That's true. In fact, I don't think it is even guaranteed to work
between different platforms or compilers. You don't know what
Ada.Streams.Stream_Element is, or how big it is. Unless you write it
yourself, you don't know how your stream is implemented or how data gets
placed in it. Encryption or compression could be going on, for all you
know. Unless you write them yourself, you don't know how 'Read and
'Write are converting between your objects and stream elements.

--
T.E.D.


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