RE: well-formed output XML (was: what are node set fragments
> whoops - what I wrote was complete rubbish, because it would > require an XSLT processor to (sometimes) keep the entire result tree in > memory and only write it out when it's finished processing - which is > surely meant to be avoided in XSLT: the idea is that the whole input tree > is held in memory, but the output tree is written out as a stream as you go > along. that means that the stylesheet writer asks for a standalone > document declaration at their own risk: if the output turns out not to > be a wf document, it won't be a wf external entity either. Yes indeed. My current thinking is that if output method="xml" and either a standalone declaration or a doctype declaration is requested, then I should report an error if subsequently an attempt is made: - to output a text node before the first top-level element node - to output a text node or element node after the first top-level element node - to finish processing before a top-level element node has been output. I think I am justified in doing this because reading section 16.1 as a whole and ignoring obvious contradictions makes it fairly clear that the intention of the spec's authors was that the output from method="xml" should be either a well-formed XML document or a well-formed XML external general parsed entity or both. That still leaves me with a little problem if the user asks for output to be directed to a DocumentHandler and it turns out not to be a well-formed document. Should I feed the DocumentHandler the events regardless, ignoring the implicit requirement of the DocumentHandler interface that the events arive in a well-formed order? Currently for example SAXON is calling FOP's DocumentHandler, which quite understandably keels over when the first thing it's given is a text node. Mike Kay XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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