RE: XPathAPI help needed

[Scott Moore]

Okay, I'm really getting frustrated.  I've gotten to the point where it will
return an XObject.  I then call the nodelist() method and it returns a
NodeList, but it's always empty.  If I call getType(), it returns 4, which
is a Nodeset, so that seems to be correct.

Here's the XML I'm searching against:

<SOAP-ENV:Envelope
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/";
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/";>
    <SOAP-ENV:Body>
        <SOAP-ENV:Fault>
            <faultcode>Client</faultcode>
            <faultstring>The SOAP message request did not contain the
appropriate security token credentials required to execute a request on the
server.</faultstring>
            <faultactor>Server</faultactor>
            <detail>
                <e:yourfaultdetails xmlns:e="mynamespace">
                    <message>The SOAP request did not contain a valid
security token.</message>
                    <errorcode>1000000</errorcode>
                </e:yourfaultdetails>
            </detail>
        </SOAP-ENV:Fault>
    </SOAP-ENV:Body>
</SOAP-ENV:Envelope>


Here's the Java code I've tried:

Document doc = <load SOAP fault document>;
XObject xobj = XPathAPI.eval(doc,
"/SOAP-ENV:Envelope/SOAP-ENV:Body/SOAP-ENV:Fault/faultcode",
 new org.apache.xml.utils.PrefixResolverDefault(doc.getDocumentElement()));

NodeList nl = xobj.nodelist();
if (nl.getLength() == 0)
{
  // always true
}


I've tried many variations on this.  Passing in doc.getDocumentElement()
instead of doc, changing the XPath expression "//SOAP-ENV:Fault/faultcode",
etc.  But NodeList is always empty.  The ONLY time it works is when I use
the expression "//faultcode", which doesn't have any namespace prefixes in
it.  But that won't always be an option, so I need to get the namespaces
working.

This has been performed on Xalan 2.2.D10 and 2.2.D13 with the same empty
results.


Thanks,
Scott


-----Original Message-----
From: Voytenko, Dimitry [mailto:[EMAIL PROTECTED]]
Sent: Monday, December 03, 2001 2:31 PM
To: '[EMAIL PROTECTED]'
Subject: RE: XPathAPI help needed


Class XNodeSet is subclass of XObject, which reimplements nodelist() method.
If XPath expression results in node-set, then result will be XNodeSet
objects and you'll be able to use it.


Thanks again,
Scott


-----Original Message-----
From: Paul Brown [mailto:[EMAIL PROTECTED]]
Sent: Monday, December 03, 2001 2:13 PM
To: [EMAIL PROTECTED]
Subject: RE: XPathAPI help needed



> [Scott.Moore at netDecide.com]
> Subject: RE: XPathAPI help needed
> I've tried what you suggested, but it won't compile because the
> namespaceNode (3rd parameter) must be of type Node.  For instance, 
>     Node n = XPathAPI.selectSingleNode(currentNode, xpath, 
>           new org.apache.xml.utils.PrefixResolverDefault(contextNode));
> doesn't compile.
> What am I missing here?

Use the eval() method instead.  Javadoc is at:

http://xml.apache.org/xalan-j/apidocs/org/apache/xpath/XPathAPI.html

        -- PB