Tony,
There was an error in James example. Replace your line with this:
"/StateTable/Action[InputEvent=\"$x\"]/ProcessFile",
with the escaped quotes around the variable, and it works fine. I get
"Cash.xsl" as the output.
steve
Tony Ms wrote:
> Back in May, James Strachan answered a query with this:
>
> Yes its very possible indeed. The trick is to use XPath variables. e.g.
>
> import org.jaxen.SimpleVariableContext;
>
> SimpleVariableContext variables = new SimpleVariableContext();
> XPath xpath = doc.createXPath( "//foo[@doo=$x]" );
> xpath.setVariableContext( variables );
>
> Then you can set whatever variable value you want for 'x' and apply the
> XPath to any node.
>
> variables.setVariableValue( "x", "abc" );
> List answer = xpath.selectNodes( document );
> List answer = xpath.selectNodes( someNode );
>
> I've been trying to get this to go, and having a problem. Here is my
> program:
>
> import java.io.*;
> import java.util.*;
> import org.dom4j.*;
> import org.dom4j.io.*;
> import org.dom4j.xpath.*;
> import org.jaxen.SimpleVariableContext;
>
> public class XPathTest {
> static String s1 = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>";
> static String s2 = "<StateTable>";
> static String s3 = "<Action>";
> static String s4 = "<InputEvent>Cash</InputEvent>";
> static String s5 = "<ProcessFile>Cash.xsl</ProcessFile>";
> static String s6 = "</Action>";
> static String s7 = "</StateTable>";
>
> public static void main(String[] args){
> (new XPathTest()).go(s1+s2+s3+s4+s5+s6+s7,
> "/StateTable/Action[InputEvent=\"Cash\"]/ProcessFile",
> "n/a");
> (new XPathTest()).go(s1+s2+s3+s4+s5+s6+s7,
> "/StateTable/Action[InputEvent=$x]/ProcessFile",
> "Cash");
> }
>
> void go(String theXML, String expr, String para){
> try
> {
> SAXReader reader = new SAXReader(false);
> Document doc = reader.read(new StringReader(theXML));
> XPath xp = doc.createXPath(expr);
> SimpleVariableContext vc = new SimpleVariableContext();
> xp.setVariableContext(vc);
> vc.setVariableValue("x", para);
> System.out.println(doc.valueOf(xp.getText()));
> }
> catch (Exception e)
> {
> e.printStackTrace(System.out);
> }
> }
> }
>
> The first call to go(), not using a variable, works fine. The second bombs
> with:
>
> org.dom4j.XPathException: Exception occurred evaluting XPath:
> /StateTable/Action
> [InputEvent=$x]/ProcessFile. Exception: Variable {null}:x
>
> I'd much appreciate some assistance in finding out what's wrong.
>
> Cheers
>
> Tony
>
> __________________________________________________
> Do You Yahoo!?
> Everything you'll ever need on one web page
> from News and Sport to Email and Music Charts
> http://uk.my.yahoo.com
>
> -------------------------------------------------------
> This sf.net email is sponsored by: viaVerio will pay you up to
> $1,000 for every account that you consolidate with us.
> http://ad.doubleclick.net/clk;4749864;7604308;v?
> http://www.viaverio.com/consolidator/osdn.cfm
> _______________________________________________
> dom4j-user mailing list
> [EMAIL PROTECTED]
> https://lists.sourceforge.net/lists/listinfo/dom4j-user
-------------------------------------------------------
This sf.net email is sponsored by: viaVerio will pay you up to
$1,000 for every account that you consolidate with us.
http://ad.doubleclick.net/clk;4749864;7604308;v?
http://www.viaverio.com/consolidator/osdn.cfm
_______________________________________________
dom4j-user mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/dom4j-user
