FW: RE: XPath in extension functions 'Could not resolve the node to a handle'

[Dave Brosius]

Ok, when i force the right XPath factory by using new, that problem goes away. 
But a new one pops up, where the dtm is null, here

public void setRoot(int root)
  {
    // %OPT% Get this directly from the lpi.
    XPathContext xctxt = wi().getXPathContext();
    m_dtm = xctxt.getDTM(root);
    m_traverser = m_dtm.getAxisTraverser(m_axis);  /* HERE m_dtm is null */
    m_isFresh = true;
    m_foundLast = false;
    m_root = root;
    m_currentNode = root;

    if (DTM.NULL == root)
    {
      throw new RuntimeException(
        
XSLMessages.createXPATHMessage(XPATHErrorResources.ER_SETTING_WALKER_ROOT_TO_NULL,
 null)); //"\n !!!! Error! Setting the root of a walker to null!!!");
    }

    resetProximityPositions();
  }


AxesWalker.setRoot(int) line: 221       
WalkingIterator.setRoot(int, Object) line: 157  
XNodeSet(NodeSequence).setRoot(int, Object) line: 265   
WalkingIterator(LocPathIterator).execute(XPathContext) line: 212        
XPath.execute(XPathContext, int, PrefixResolver) line: 337      
XPath.execute(XPathContext, Node, PrefixResolver) line: 303     
XPathImpl.eval(String, Object) line: 216        
XPathImpl.evaluate(String, Object, QName) line: 281     
ExtensionsWithXPath.exfunc(ExpressionContext) line: 28  
NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available 
[native method]  
NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39      
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25  
Method.invoke(Object, Object...) line: 585      
ExtensionHandlerJavaClass.callFunction(String, Vector, Object, 
ExpressionContext) line: 401     
ExtensionHandlerJavaClass.callFunction(FuncExtFunction, Vector, 
ExpressionContext) line: 440    
ExtensionsTable.extFunction(FuncExtFunction, Vector, ExpressionContext) line: 
222       
TransformerImpl.extFunction(FuncExtFunction, Vector) line: 473  
FuncExtFunction.execute(XPathContext) line: 208 
FuncExtFunction(Expression).executeCharsToContentHandler(XPathContext, 
ContentHandler) line: 313        
ElemValueOf.execute(TransformerImpl) line: 274  
ElemApplyTemplates.transformSelectedNodes(TransformerImpl) line: 395    
ElemApplyTemplates.execute(TransformerImpl) line: 178   
TransformerImpl.executeChildTemplates(ElemTemplateElement, boolean) line: 2400  
TransformerImpl.applyTemplateToNode(ElemTemplateElement, ElemTemplate, int) 
line: 2270  
TransformerImpl.transformNode(int) line: 1356   
TransformerImpl.transform(Source, boolean) line: 709    
TransformerImpl.transform(Source, Result, boolean) line: 1273   
TransformerImpl.transform(Source, Result) line: 1251    
ExtensionsWithXPath.main(String[]) line: 21