Re: [xcbf] Biometrics web service

[John Larmouth <j.larmouth@salford.ac.uk>]

Indeed.  There is no reason in ASN.1 to produce a sequence of a single
component.  One of the biggest problems with early XSD to ASN.1 mappings
was the introduction of lots of sequences with just one component.

John L


Phil Griffin wrote:
> 
> BTW. I haven't looked into this far enough to
> know whether complex types are required for
> some reason, but if not, and if simple types
> are allowed, the definition
> 
>     PrivacyHTTPResponseType ::= SEQUENCE {
>        privacyObjectResponse  UTF8String
>     }
> 
> could simply be shortened to
> 
>     PrivacyHTTPResponseType ::= UTF8String
> 
> with no loss of content that I can discern.
> 
> Phil
> 
> Phil Griffin wrote:
> 
> > John,
> >
> > Looking at a proposed ASN.1 based WSDL web service for
> > biometrics for an X9.84 meeting next week in California
> > and I have a question. Isn't
> >
> >    <xsd:complexType name="PrivacyHTTPResponseType">
> >     <xsd:sequence>
> >        <xsd:element
> >           name="privacyObjectResponse" type="xsd:string"/>
> >     </xsd:sequence>
> >    </xsd:complexType>
> >
> > the same thing as saying something like
> >
> >    PrivacyHTTPResponseType ::= SEQUENCE {
> >       privacyObjectResponse  UTF8String
> >    }
> >
> > Seems that it would be. It's just hard to imagine why
> > anyone would want to use the former instead of the
> > later. Maybe it's what I'm used to seeing, but the
> > later would seem to be arguably easier to read, write,
> > and comprehend.
> >
> > Maybe I've overlooked something. I recall your mentioning
> > something during a break in Baltimore at the MoU MG meeting
> > last week about the ability to carry all of the UTF8
> > characters in XML that are allowed in ASN.1 encodings. Do
> > you recall this discussion?
> >
> > Phil
> >
> >
> >
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-- 
   Prof John Larmouth
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