[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Regarding XSchema : Section 4.3.1
Amit Rekhi wrote: > > * The section 4.3.1 of the XSchema spec "Converting DTDs to > XSchema Documents" states that Parameter entity declarations may be > converted to parsed general entity declarations and use. > > If this were to happen then this means that the resulting > XSchema would have a DTD (internal/external subset) which would house the > converted parameter entity declarations as general entity declarations since > XSchema does not give any construct for Parsed General Entity declarations. > Am I right? Yes. > If we may transform parameter entity declarations (from a source > DTD) into corresponding general parsed entity declarations (in the target > XSchema), Not in the XSchema as such, but in the *DTD* of the XSchema, presumably though not necessarily in its internal subset. > then why the restriction in case of general parsed entity > declarations? Because unless we are willing to abandon compatibility with XML 1.0 and SGML entirely (and we, the XSchema team, are *not* willing), there is no *point* in recording general parsed entities in the XSchema, since by the time the XSchema is processed, basic XML processing has to have already been done, including expanding entities. It is simply not WF XML to have entity references to entities that don't appear in the DTD of the document. DTDs serve three functions: entity declaration, attribute defaulting/rationalizing, and validation. XSchema handles the third and perhaps the second, but not the first. The only reason to allow *unparsed* entities to be declared in XSchemas is to validate ENTITY/ENTITIES attributes. -- John Cowan http://www.ccil.org/~cowan cowan@c... You tollerday donsk? N. You tolkatiff scowegian? Nn. You spigotty anglease? Nnn. You phonio saxo? Nnnn. Clear all so! 'Tis a Jute.... (Finnegans Wake 16.5) xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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