Subject: Re: [xsl] Getting the root namespace from the input document From: "bryan rasmussen" <rasmussen.bryan@xxxxxxxxx> Date: Tue, 6 Feb 2007 13:13:15 +0100 |
Okay I have to say that xalan and xsltproc give the results I would expect from an XSLT 1.0 processor (not expect as in asserting this is what the standard says but just expect as in what I would predict would be the result) and saxon 6 gives the result I would expect for an XSLT 2.0 processor.
Now I guess the question is, as you indicated before, if the expectation meets a standard requirement. cheers, Bryan Rasmussen
Here are the results on Xalan, xsltproc, Saxon 6 and Saxon 8:!
~/tests$ xalan -XSL namespace-double.xsl -IN namespace-double.xml <my:same xmlns:my="namespace-double.xsl" added="my:value"> <my:other xmlns:my="other-uri" added="my:value"/> </my:same>
~/tests$ xsltproc namespace-double.xsl namespace-double.xml <my:same xmlns:my="namespace-double.xsl" added="my:value"> <my:other xmlns:my="other-uri" added="my:value"/> </my:same>
~/tests$ saxon namespace-double.xml namespace-double.xsl Warning: at xsl:stylesheet on line 6 of namespace-double.xsl: Running an XSLT 1.0 stylesheet with an XSLT 2.0 processor <my:same xmlns:my="namespace-double.xsl" added="my:value"> <my:other xmlns:my="other-uri" added="my:value"/> </my:same>
~/tests$ saxon6 namespace-double.xml namespace-double.xsl Error at xsl:copy-of on line 15 of namespace-double.xsl: Cannot create two namespace nodes with the same name Transformation failed: Run-time errors were reported
~/tests$
Regards,
--drkm
bryan rasmussen wrote:
> Okay I haven't gone and checked but I would expect that some > processors would change the namespace to fit the copy-of namespace. > At > any rate what were the outputs like? Did you have an output from the > processors that was illegal? If not, what did they do? > > This seems like a useful transform to test a lot of processor outputs > on actually. > Cheers, > Bryan Rasmussen > > On 2/6/07, Florent Georges <darkman_spam@xxxxxxxx> wrote: > > Michael Kay wrote: > > > > Hi > > > > > There's also sometimes a theoretical risk that prefixes > > > will be changed because XSLT 1.0 permits it > > > > Yes, it is what I thought about. > > > > > but mainstream processors all do the decent thing in > > > straightforward cases. > > > > And that is why I use it. But I'm not very comfortable > > with the use of this "observable behaviour" without knowing > > exactly how this happens (prefixes will be changed in > > particular cases or not?). > > > > In XSLT 2.0, the transformation fails if you try to create > > a namespace node whose the prefix is already bound to > > another namespace URI. I like that. In XSLT 1.0, the > > transformation succeed, your result is not correct and the > > error will propagate further in the chain. > > > > Mmh, before to post, I just wrote a little test. Input: > > > > <my:same xmlns:my="namespace-double.xsl"> > > <my:other xmlns:my="other-uri"/> > > </my:same> > > > > Stylesheet: > > > > <xsl:stylesheet > > xmlns:xsl="http://www.w3.org/1999/XSL/Transform" > > xmlns:exsl="http://exslt.org/common" > > xmlns:my="namespace-double.xsl" > > exclude-result-prefixes="exsl" > > version="1.0"> > > > > <xsl:output indent="yes" omit-xml-declaration="yes"/> > > > > <xsl:template match="*"> > > <xsl:variable name="dummy-ns"> > > <my:e/> > > </xsl:variable> > > <xsl:copy> > > <xsl:copy-of select=" > > exsl:node-set($dummy-ns)/*/namespace::*"/> > > <xsl:attribute name="added">my:value</xsl:attribute> > > <xsl:apply-templates select="@*|node()"/> > > </xsl:copy> > > </xsl:template> > > > > <xsl:template match="@*|node()" priority="-1"> > > <xsl:copy> > > <xsl:apply-templates select="@*|node()"/> > > </xsl:copy> > > </xsl:template> > > > > </xsl:stylesheet> > > > > I tested it with Saxon 6, Saxon 8, Xalan and xsltproc. > > Actually, Saxon 6 was the only one to generate an error: > > > > Error at xsl:copy-of on line 16 of namespace-double.xsl: > > Cannot create two namespace nodes with the same name > > Transformation failed: Run-time errors were reported > > > > I thought in this case an XSLT 1.0 processor will change > > one of the prefixes and not generate an error, but I didn't > > find the right verses in the XSLT 1.0 REC. Does any one > > know those verses? > > > > Furthemore, I thought Saxon 8 didn't throw an error > > because it was in compatibility mode, but the transformation > > succeed even with an XSLT 2.0 stylesheet. It fails if we > > use xsl:namespace to create the node, but not if we use > > xsl:copy-of to copy it. Again, I didn't find in the XSLT > > 2.0 REC the difference between xsl:namespace and xsl:copy-of > > regarding the duplicate namespace node names. Any pointer? > > > > Regards, > > > > --drkm > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ___________________________________________________________________________ > > Dicouvrez une nouvelle fagon d'obtenir des riponses ` toutes vos > questions ! > > Profitez des connaissances, des opinions et des expiriences des > internautes sur Yahoo! Questions/Riponses > > http://fr.answers.yahoo.com > >
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