Subject: [xsl] XPathAPI: How to associate namespaces From: Torsten Schlabach <TSchlabach@xxxxxxx> Date: Tue, 6 May 2003 14:11:38 +0200 (MEST) |
Dear list, I found the recent posting attached, but the thread ended there. This is about Xalan-J 2.x, so I am not too sure if it belongs here, but I'll try. Q: I have a document with the root element being in a default namespace: <?xml version="1.0" encoding="UTF-8"?> <Report xmlns="http://abc.com/abc/abc";> <Type>memo</Type> <Type>rep</Type> <Link name="xyz">123</Link> </Report> I would like to extract just the Link from that document trying to use XPathAPI.selectNodeList(myDoc,"/report/link") will return an empty result set. Using XPathAPI.selectNodeList(myDoc,"/abc:report/abc:link") will result in a transformer exception telling me that the namespace abc needs to be assiciated somewhere. Where can I do that? Inside the XPath expression? I read the spec; it look to me as if XPointer has a syntax for that while XPath hasn't. But I could not find any method to call in order to do this either. Torsten Your <Report> element is in a namespace. You are going to have to specify this namespace in your XPath expression, using a prefix such as /xx:Report. I don't know the XPathAPI in detail, but you will find it provides some mechanism to associate the prefix xx with the namespace http://abc.com/abc/abc Michael Kay Software AG home: Michael.H.Kay@xxxxxxxxxxxx work: Michael.Kay@xxxxxxxxxxxxxx > -----Original Message----- > From: Steve Ge [mailto:ges@xxxxxxxxxx] > Sent: 04 October 2002 17:17 > To: P2P_XSLT > Subject: [xslt] Problem with XPathAPI > > > Has anyone tried XPathAPI class? I'm having trouble with the > selectNodeList() method returning an empty NodeList after a > valid XPath > search. > > After parsing the xml file, I used XPathAPI to get a > NodeList. But no > matter what xpath I used, the returned NodeList is always > emtpy (not null > though). The call to NodeList.getLength() returns 0, and the > NodeLiist.item(0) is null. > > I've tried the example in the book "Java XML > Programmer's Reference", p676, XPathQuery.java. It failed > with the same > symptons. I figure this might be a setup / jar conflict > problem. I am > using Xcerces for parsing, and Xalan for XPath/XSLT, and I am > running a > jsp on the WebLogic 6.1 server. > > Any help would be appreciated. > > > The code is below: > ============================================================== > ========== > DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); > Document doc = factory.newDocumentBuilder().parse(sFilePath); > > String expr = "/Report/Type/text()"; > NodeList list = XPathAPI.selectNodeList(doc, expr, doc); > Node node = list.item(0); > > > The xml file is below: > ============================================================== > ========== > <?xml version="1.0" encoding="UTF-8"?> > <Report xmlns="http://abc.com/abc/abc";> > <Type>memo</Type> > <Type>rep</Type> > <Link name="xyz">123</Link> > </Report> XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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