Using one syntax for more than one attribute - comments? - Thread - go-pugleaf

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2 total messages Started by Alexandre Sasha Polozoff Fri, 14 Aug 1992 02:23

Using one syntax for more than one attribute - comments?

#468

Author: Alexandre Sasha Polozoff
Date: Fri, 14 Aug 1992 02:23

37 lines
1537 bytes

We are having an rather simple dilemma which I would like some comments
from others.

The grammar may not be complete, just as an example.

Consider we have a syntax as follows:

aSyntaxForNames :: = GraphicString

Now we have two attribute templates which are going to both use the
same syntax.

userName	ATTRIBUTE
	WITH SYNTAX		Our_syntax.aSyntaxForNames
	etc...


computerName   ATTRIBUTE
	WITH SYNTAX		Our_syntax.aSyntaxForNames
	etc...

== OR ==

We could have two syntaxes

userNameSyntax ::= GraphicString
computerNameSyntax ::= GraphicString

and reference these syntaxes instead.

Comments?  Ideas?  We can't decide which way is (so to speak) better
or more correct than another way.

---------------------------------------------------------------------------
Alex Polozoff      512/218-1178       Internet    asp@trail.sharpstone.com
Sharpstone Trail Productions          Compuserve  73467,252
Austin, Texas USA                     OSI Network Management Products

Re: Using one syntax for more than one attribute - comments?

#470

Author: Harald Tveit Alvestrand
Date: Sun, 16 Aug 1992 19:38

26 lines
1447 bytes

In article <01050130.b0ta21@trail.sharpstone.com>, asp@trail.sharpstone.com (Alexandre Sasha Polozoff) writes:
....example deleted...
|> 
|> Now we have two attribute templates which are going to both use the
|> same syntax.
|> 
|> == OR ==
|>
|> We could have two syntaxes
|> and reference these syntaxes instead.
|> 
It depends on the application.
But if this was, for instance, Directory, I would strongly suggest that
you keep the number of separate names as low as possible.

You should only use separate names for things when there is a need to actually
distinguish between the two objects, as for instance if the name syntax was
the only thing that set a human apart from a computer (not good design,
I think).

My opinion only.....
-- 
                   Harald Tveit Alvestrand
Harald.Alvestrand@delab.sintef.no
C=no;PRMD=uninett;O=sintef;OU=delab;S=alvestrand;G=harald
+47 7 59 70 94

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