Subject: [xsl] JAXP: namespaces/namespace-prefixes features for SAXResult From: "Nikolai Grigoriev" <grig@xxxxxxxxxxx> Date: Tue, 10 Dec 2002 01:24:27 +0300 |
Hi all, I am reading output of an XSLT transformation through javax.xml.transform.sax.SAXResult. It looks very similar to using an XMLReader: I set a ContentHandler and get information through its callbacks. However, an XMLReader can deliver parse results in a variety of ways. In particular: - qNames can be present or null; - start/endPrefixMapping() events may be fired or skipped; - xmlns:* attributes may be present or absent in the attribute lists. For an XMLReader, I can tame this zoo through setFeature() method, using two features http://xml.org/sax/features/namespaces and http://xml.org/sax/features/namespace-prefixes (a table at http://www.saxproject.org/?selected=namespaces, "Configuring Namespace Support" unambiguously defines behaviour for each feature combination). Even if the parser does not support a particular pairing, I can at least query its capabilities, and adjust my ContentHandler accordingly. Now I pass to JAXP. The same ContentHandler is fed to a Transformer (wrapped into a SAXResult); so I would expect either the Transformer or its mother TransformerFactory to recognize SAX2 features. I have browsed the whole JAXP 1.1 specification looking for a way to set (or at least to query) the features, but in vain. I could not even find the exact description of the default behaviour. Looks like the choice of values for SAX properties is implementation-dependent - but this would undermine the whole idea of pluggability, so I am definitely missing some important piece of the puzzle. In view of the above, my questions are: 1) What is the default behaviour of Transformer wrt namespaces/namespace-prefixes? Where in the JAXP spec is it defined? 2) Can I query or modify SAX2 parser features for a JAXP Transformer object? If yes, how? Thanks to anyone willing to get me out of the impasse. Regards, Nikolai Grigoriev RenderX XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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