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[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Schemas and entities (was "And the DTD says, "I'm NOT dead yet!!")
 > You're making things _much_ too complicated. agreed, but a small comment on: > a) create an instance per XML 1.0 plus Namespaces, with entity > definitions in the internal or external subset, but nothing else > (i.e. no ELEMENT or ATTRIBUTE declarations); > b) process with any conformant XML processor (if entities are all > defined in internal subset) or with any validating XML processor (if > any entities are defined in external subset); > c) process with a schema-aware processor. If in a) if you only make the entity declarations, and they are in an external subset, then in b) don't you need a non-validating XML processor that reads external subsets. You suggest using a validating processor but that would generate errors as the document would be invalid, wouldn't it? Non validating parsers aren't obliged to read external subsets but most seem to, or can at least be configured to. So in practice this doesn't seem to cause any real problems. (Similar issues relate to XSL use of ID declartions.) Alternatively of course one can use a full DTD in stage (a) that does declare all elements and attributes, although then if you use a validating XML parser, depending on the document type, there may or may not be much more for the schema validation to check. 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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