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Key uniqueness within a messageblock
- Subject: Key uniqueness within a messageblock
- From: mark_harrison_uk2
- Date: Thu, 05 Jun 2003 23:30:00 +0000
From the spec:
"The order of name-value pairs within a message section has no
significance. The same name may be used more than once in the same
section if required, although by convention, multiple entities are
usually differentiated through the use of an index element (e.g.
my.thing.0 ; my.thing.1)."
Is anyone actually using messageblocks with multiple identical
keyword (names?)
If not, can anyone think of a case where you'd WANT to?
If not (to both the questions above), can I move that NAMEs have to
be unique within a given messageblock?
If they AREN'T unique, then we are introducing non-determinism into
the "get value by name" semantics...
... and using Collections as a way of handling them programatically
runs the risk of erroring when parsing a message with non-unique
keywords.
Note that this is NOT about whether multiple, identically named,
messageblocks can exist - there is clearly a good reason for these
(cf xAPnews)
Regards,
Mark
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