trying to use id() function in xpath 2006-04-08 - By Ittay Dror
hi,
i'm new to xalan and xsl. i'm trying to get elements using the id function from
an html document. i don't work with an xsl document, just trying to get
elements.
this is my code (basically, slightly modified ApplyXPathJaxp sample):
InputSource xml = new InputSource("/tmp/test.html");
xml.setEncoding("US-ASCII");
String expr = "id('foo')";
// Create a new XPath
XPathFactory factory = XPathFactory.newInstance();
XPath xpath = factory.newXPath();
Object result = null;
try {
// compile the XPath expression
XPathExpression xpathExpr = xpath.compile(expr);
// Evaluate the XPath expression against the input document
Node node = (Node) xpathExpr.evaluate(xml, XPathConstants.NODE);
System.out.println(node);
}
catch (Exception e) {
e.printStackTrace();
}
and my html is:
<html>
<body>
<label id="foo">hello</label>
</body>
</html>
i've tried the following:
1. add a doctype <!DOCTYPE html SYSTEM "/tmp/xhtml1-transitional.dtd"> (the dtd
and ent files are saved locally). this is not a good option for me, since i
want to parse arbitrary html documents (i'll do that with tagsoup and SAX2DOM,
but first i want to get this to work)
2. creating a DOM, setting in the config the schema and scema-type, and using
XPathAPI, or doc.getElementById
3. setting the system id in the InputSource
from debugging, it seems that the parser doesn't recognize 'id' as being an id.
i would really like the id() function to work (the xpath expressions are used
by users, and id() is more natural, than defining keys, though i don't know how
to do that either)
thanks for your help,
ittay
--
===================================
Ittay Dror
openQRM Team Leader,
R&D, Qlusters Inc.
ittayd@(protected)
+972-3-6081994 Fax: +972-3-6081841
http://www.openQRM.org
- Keeps your Data-Center Up and Running
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