Subject: Re: [xsl] A really easy (hopefully) question From: Uche Ogbuji <uche.ogbuji@xxxxxxxxxxxxxxx> Date: Fri, 09 Feb 2001 07:27:01 -0700 |
> > The "current node" and "current node list" are XSLT concepts, > > not XPath > > concepts. What would you expect current() to return in > > another non-XSLT implementation of XPath? > > It would be quite easy to define it as "the node that is the context node > for the XPath expression as a whole, outside any predicates". I assume > no-one thought that would be useful enough to justify it. 4XPath doesn't, but I do agree that it makes some sense. We'd probably require current() to be qualified with the XSLT namespace if used in free-standing 4XPath. > It would be interesting to know whether free-standing XPath implementations > actually provide this function or not. As far as I can see neither > Microsoft's nor Xalan's free-standing XPath processors give you any > (documented) way of defining variables, which ARE part of the XPath spec. In 4XPath this looks like from xml.xpath.Context import Context from xml.xpath import Evaluate vars = {('http://spam.com', 'sillyvar'): 'hello world'} nss = {'pref': 'http://spam.com'} con = Context(dom_node, varBindings=vars, processorNss=nss) result = Evaluate('$pref:sillyvar', context=con) Quick n dirty Python primer for the above {a: b, c: d} is a dictionary or associative array with a & c as the keys and b & d as the values. (a, b, c) is a tuple of values, similar to a list -- Uche Ogbuji Principal Consultant uche.ogbuji@xxxxxxxxxxxxxxx +1 303 583 9900 x 101 Fourthought, Inc. http://Fourthought.com 4735 East Walnut St, Ste. C, Boulder, CO 80301-2537, USA Software-engineering, knowledge-management, XML, CORBA, Linux, Python XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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