Re: How to convert record?

["Marc A. Criley" <mcqada@earthlink.net>]

Joseph Kwan wrote:
> 
> So, it must be a constrained type/subtype. This solve my problems.
> Thanks.
> 
> OTOH, I read about 13.13.2 Stream-Oriented Attributes in LRM. Can I
> use 'Read and 'Write or 'Input and 'Output for [this] purpose?
> 
> Can someone please explain in details (an example of the
> implementation will be of great help) how to implement these
> attributes? Please forgive my stupidity because I can't find a good
> examples of such implementation in books and LRM and certainly am
> unable to figure it out.
> 
> Thank you.

You can take a look at my article in Ada Letters--A Socket-Based
Manifestation of Streams
(www.acm.org/sigs/sigada/ada_letters/issues/june2001/socket_streams.pdf)
for a discussion and full working example of how to use the stream
attributes with sockets.  Replace the socket functionality with the
necessary buffering and I/O.

Part of the motivation for the article was to demonstrate how to extend
streams for storage and communication mechanisms other than files, just
as you're asking about.

Marc A. Criley
Senior Staff Engineer
Quadrus Corporation
www.quadruscorp.com