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Further bulletin from the front: this doesn't mean you can't use a validating parser as the first stage of an XML Schema-aware processor, or that you will of necessity be beset by error messages from it if you do and only use the DOCTYPE statement to define internal general entities: The XML Infoset draft spec. [1], on which the XML Schema draft spec. [2] depends in this regard, makes clear that a well-formed-but-invalid XML document has a perfectly good infoset. (XML 1.0 DTD-based) validation itself, i.e. XML 1.0 DTD-based processing beyond that which is required of non-validating processors) of documents with no external subset affects nothing which XML Schema-aware processing is sensitive to. I think maybe it's Friday here as well, but I lost the thread of that paragrah, so maybe the point below is irrelevant, but anyway... If the XML uses entity references then there has to be a <!DOCTYPE else it's not well formed, no? So to use a validating parser as the first stage of schema processing you must have a full DTD referenced in the DOCTYPE surely. In other words, although a "well-formed-but-invalid XML document has a perfectly good infoset" you can't necessarily get at that infoset using a validating parser (as such a beast has the right to die on you). David _____________________________________________________________________ This message has been checked for all known viruses by Star Internet delivered through the MessageLabs Virus Control Centre. For further information visit http://www.star.net.uk/stats.asp
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