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Tom, All,
tpassin@h... wrote:
> I'm involved right now in XML encoding rules for a subset of ASN.1 (for a
> particular problem domain). Since I have only a slight reading
> acquaintance ASN.1, it's been even more interesting. One of the
> interesting issues is that ASN.1 has both named data types and named
> identifiers (an element has both a type and an identifier), but in XML you
> have only element names (basically representing complex data types). So
> do you use identifiers or data type names, and what do you do with the
> other of the pair? There are a lot of possible solutions.
Two possibilities, I prefer:
a) use the tags as element names ("A17" for [APPLICATION 17]),
use fixed attributes for identifiers and data type names.
b) use the identifiers as element names, use fixed attributes for tags and
data type names.
Note 1: You may want to use a separte namespace for each
SEQUENCE or CHOICE to match naming rules (I wonder, what the xml-
uri guys think of this).
Note 2: You can have situations were several data type or possible for an
element, so the attribute isn't always fixed.
Regards,
Peter Jacobi
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