On Mon, Jun 25, 2007 at 06:24:46PM -0700, Yong Chen (yongche) wrote: > > Hi, > > I've a question regarding xpath and streaming (xmlWriter): > > I use xpath to filter a document so I get selected (or filtered) nodes. > I also use xmlWriter to stream output. I wonder if I can use both > together. > > Libxml xpath works by first getting xmlXpathContextPtr (API: > xmlXpathNewContext(doc)), this means the document (doc) has to be > available. But if I'm streaming the data into a file > (xmlNewTextWriterFilename()), I don't have the doc available. So how can > I apply the xpath filtering in xmlWriter streaming?
Normal XPath operations require a full tree. There is a pattern module allowing to stream for a very small subset of XPath, see http://xmlsoft.org/html/libxml-pattern.html , but I don't have user friendly docs for it. Daniel -- Red Hat Virtualization group http://redhat.com/virtualization/ Daniel Veillard | virtualization library http://libvirt.org/ [EMAIL PROTECTED] | libxml GNOME XML XSLT toolkit http://xmlsoft.org/ http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/ _______________________________________________ xml mailing list, project page http://xmlsoft.org/ [email protected] http://mail.gnome.org/mailman/listinfo/xml
