Re: [Jaxen] New user puzzled about setting up a variable context

[Tony Montgomery-Smith]

Thanks.

So, I try:

      String expr =
"/StateTable/State[Name='Tender']/Action[InputEvent=$m]/ProcessFile";
      String para = "Cash";
      XPath xp = doc.createXPath(expr);
      SimpleVariableContext vc = new SimpleVariableContext();
      vc.setVariableValue("m",(Object) para);
      xp.setVariableContext(vc);
      System.out.println(doc.valueOf(xp.getText()));

What this does is:

org.dom4j.XPathException: Exception occurred evaluting XPath:
/StateTable/State[Name='Tender']/Action[InputEvent=$m]/ProcessFile.
Exception: Variable :m

Cheers

Tony

> I'd appreciate a pointer to an example of how to set up a variable
> context correctly. My search on the net has only turned up other requests
> for the same, but no answers!
>
> What I'm trying is:
>
>       String expr =
"/StateTable/State[Name='Tender']/Action[InputEvent=$m]/ProcessFile";
>       String para = "Cash";
>       XPath xp = doc.createXPath(expr);
>       SimpleVariableContext vc = new SimpleVariableContext();
>       vc.setVariableValue("$m",(Object) para);
>       xp.setVariableContext(vc);
>       System.out.println(doc.valueOf(xp.getText()));
>
> which doesn't work, although this is fine:
>
>       String expr =
"/StateTable/State[Name='Tender']/Action[InputEvent='Cash']/ProcessFile";
>       XPath xp = doc.createXPath(expr);
>       System.out.println(doc.valueOf(xp.getText()));

Try setting the variable "m" instead of "$m".

The dollar-sign isn't part of the variable name.

-bob




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