>But sometimes I want to use the sum function of XPath with the same evaluation function, but thats not possible beacuse it returns a NODESET and not a String what XPath use the sum function.
 
In the JAXP XPath interface, you declare the result type you expect the XPath expression to return. If the expression is returning a number (which is what sum() returns), then declare the return type as XPathConstants.NUMBER instead of XPathConstants.NODESET.
 
Alternatively: the JAXP interface was designed for XPath 1.0, and it really doesn't work that well with XPath 2.0. You might find that Saxon's s9api API is a lot more flexible.
 
>I couldn't get which example is the solution for me, all the examples except one look like a xpath1.0 implementation.
 
Yes, there aren't that many examples around. Very often, XPath expressions invoked directly from Java are very simple, which probably accounts for this.
 
>the error message "Supplied node must be built using the same or a compatible Configuration"
 
This means that the XPathFactory you are using has a different underlying Saxon Configuration from the one that was used to build the source document being queried. This is a symptom of the fact that the APIs are very disconnected. Using s9api makes it much easier to avoid this kind of problem.
 
If you want help diagnosing the problem, however, it helps to show us your code.
 
Regards,
 
Michael Kay
http://www.saxonica.com/


From: Erik Rens [mailto:mail2rens@gmail.com]
Sent: 26 March 2009 13:15
To: saxon-help@lists.sourceforge.net
Subject: [saxon] Fwd: Xpath 2.0 sequences and Saxon examples problems.


I have a question about XPath2.0. I used xpath 1.0 in Java to get some information of a xml file. Nothing news. Some times I use an expression to
retrieve a nodelist : doc/entry/Number. So when I use the evaluate function with XPathConstants.NODESET it will return NodeList. Then i use a for loop
to iterate. But sometimes I want to use the sum function of XPath with the same evaluation function, but thats not possible beacuse it returns a NODESET and not a String what XPath use the sum function. So I read on the Internet and I thought meaby XPath 2.0 could help me because it can return sequences. I download the free libary of Saxon 9.1.0.6 and use some examples to get it up and running. I couldn't get which example is the solution for me, all the examples except one look like a xpath1.0 implementation. So meaby ApplyXPathJAXP.java is what I need, but when I want to run this example the error message "Supplied node must be built using the same or a compatible Configuration" appear when the function "xpath.compile(xpathExpressionStr);" is executed.

I tried to solve the problem but it didn't make sense to me. So can someone tell me if XPath 2.0 is the solution for me?!. And how I can solve my problem if the is the right way ? I have to use it in Java 1.5 and not in XSLT.

Also I want to use more expressions in XPath.

Thanks for helping,