I agree that an XML namespace is not a URI, but based on this from the XML namespace spec:
[1][Definition: An XML namespace is identified by a URI reference [RFC3986]; element and attribute names may be placed in an XML namespace using the mechanisms described in this specification.] It is clear that a the string used to specify the namespace, its namespace name, is a URI. It may be a URI that is constrained as to its possible contents, but it is still a URI. So, as Jirka pointed out the best way, IMHO, is to use <uri type="xmlnamespace"> when referring to an XML namespace using its namespace name. Again from the spec: [1][Definition: For a name N in a namespace identified by a URI I, the namespace name is I.] [1] http://www.w3.org/TR/REC-xml-names Cheers, Eric > -----Original Message----- > From: Jirka Kosek [mailto:[EMAIL PROTECTED] > Sent: Thursday, March 08, 2007 7:04 AM > To: Peter Ring > Cc: [email protected] > Subject: Re: [docbook] namespace markup > > Peter Ring wrote: > > > In short: an XML namespace name looks a lot like an URI, and an XML > > namespace declaration look a lot like assigning a value to an > > attribute. But you cannot really infer much about the > semantics of XML > > namespaces from that. An XML namespace name is not a type of URI. > > While I not disagree with you, I think that this reasoning is > quite sort of mental gymnastic. > > If you have namespace in your document you don't see abstract > concept of namespace you see URI, and best what you can do is > to markup it as a URI and say that this particular URI is > used as namespace name. > > This is also suggested in TDG5: > > http://www.docbook.org/tdg5/en/html/uri.html > > URI are simply used for too many things nowadays and it is > unreasonable to have separate element name for each such usage. > > Jirka > > -- > ------------------------------------------------------------------ > Jirka Kosek e-mail: [EMAIL PROTECTED] http://xmlguru.cz > ------------------------------------------------------------------ > Professional XML consulting and training services > DocBook customization, custom XSLT/XSL-FO document processing > ------------------------------------------------------------------ > OASIS DocBook TC member, W3C Invited Expert, ISO/JTC1/SC34 member > ------------------------------------------------------------------ > Want to speak at XML Prague 2007 => http://xmlprague.cz/cfp.html > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
