[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Registered Namespace prefixes
Jeff Lowery wrote: > The advantage of a registry is that prefixed names become universal names when > prefixes are registered. But do the things which they *name* become thereby universal (which is, after all, the effect which we are trying to achieve here)? > There are no scope issues. On the contrary, what remains are nothing but scope issues. The intent of namespaces is to disambiguate names by properly assigning them to semantic domains, But from the point of view of the processing nodes which will act upon the documents in which those names are found, the only accurate (or useful) assignment of names to domains is the assignment to particular processing from among the choices which might be invoked at that node. Ultimately, from that local point of view, the correct assignment of any name is to the processing from which useful results have been produced in processing analogous names and their data content in the past. And, of course, nothing could be more local and idiosyncratic than such a database of experience and its (always local) outcomes. I have 'namespaced' since 1999 by the provenance of XML documents and by the structure in which names are found in them. In my experience, a processing node has a miserable first week as it learns what to expect in documents from each of its sources. After that, non-recognition of names drops to well below 0.1% and, except for the spike when new data sources come online, runs consistently far below the level at which it would be economic to adjust or optimize the namespacing portion of processing. Respectfully, Walter Perry
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