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> Alan Gutierrez wrote: > >> In my SAX library, XStrategy, I combined namespaces and events. >> >> The XStrategy framwork maintains a stack of namespaces in scope >> by default. It seemed impossible to get anything done without it. > > If you're int he unfortunate situation of needing to resolve namespace > prefixes in attribute values and element content, as is the case in an > XSLT processor or a schema validator, then you absolutely need to do > this. However, probably at least 90% of use cases are much simpler and > just need to know the namespaces of each element and attribute, and this > doesn't require any extra work. For people inventing languages which use Qnames in element or attribute values, I commend making your own prefix->namespace declaration element instead of piggybacking on the XML namespaces system. That way you can have sanity: namespace must have prefix, prefix cannot be remapped or reused, no default namaspace. I did this in Schematron without significant trouble. The XML Namespaces rec does not cover Qnames in values: that is semantics that is up to the schema developer. XSLT does it one way, XML Schemas does it another way, and Schematron does it another. Cheers Rick Jelliffe
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