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> I have been trying to find a related tool/function for some time (and > may well have missed it in my search) - an x-path validation tool. > Such a tool would be capable of validating a given x-path against a > schema. Nothing in a schema can make an XPath 1.0 expression invalid. What is possible is that by examination of a schema you can statically determine that a particular XPath expression will return an empty node-set. (In fact, you can do this for some expressions even in the absence of a schema, examples are "/..", "@comment()", "@x/@y", "item[0]".) This kind of static analysis is being done by some of the XQuery prototype implementations; check the XQuery home page http://www.w3.org/XML/Query for a list of implementations. Similar techniques are also used in the Tamino database engine: see http://www.tamino.com/ Michael Kay Software AG home: Michael.H.Kay@n... work: Michael.Kay@s... > > Is anyone aware of such a tool? It would be a great assistance to my > non-'expert' x-path writers (and even the expert ones!) > > Mike > > At 11:47 AM -0500 28/2/02, Daniel Veillard wrote: > >On Thu, Feb 28, 2002 at 12:58:41PM -0700, Kris Thompson wrote: > >> I must have missed it but I feel like my searching has > been complete. I > >> am looking for a way, using one of the more popular parsers idealy > >> Xerces, to if given a node in a document return the XPath string > >> representation of that node. Something like the > following would be nice > >> > >> public static String getXPath(Document doc, Node node) > >> > >> where node is the node that I want the XPath > expression on and doc > >> is the document for which this node exist. > >> > >> If this does not exist in any popular parsers than has > anyone created > >> this piece of code for which I could have? > > > > Available as: > > xmlChar * xmlGetNodePath(xmlNodePtr node); > > > >in libxml2 (http://xmlsoft.org/) > > http://xmlsoft.org/html/libxml-tree.html#XMLGETNODEPATH > > > >Note of course that there isn't "the" XPath string to select > that node > >there is an infinity of those. 2 implementation could return > different > >path and both be right. > > > >Daniel > > > >-- > >Daniel Veillard | Red Hat Network https://rhn.redhat.com/ > >veillard@r... | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ >http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/ > >----------------------------------------------------------------- >The xml-dev list is sponsored by XML.org <http://www.xml.org>, an >initiative of OASIS <http://www.oasis-open.org> > >The list archives are at http://lists.xml.org/archives/xml-dev/ > >To subscribe or unsubscribe from this list use the subscription >manager: <http://lists.xml.org/ob/adm.pl> -- Mike Thanos Lending Technology Services Pty Ltd mike_thanos@l... ----------------------------------------------------------------- The xml-dev list is sponsored by XML.org <http://www.xml.org>, an initiative of OASIS <http://www.oasis-open.org> The list archives are at http://lists.xml.org/archives/xml-dev/ To subscribe or unsubscribe from this list use the subscription manager: <http://lists.xml.org/ob/adm.pl>
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