/// <summary>
/// Evaluates the current step in the path. If the path represented by the step does not
/// exist, NULL is returned. Otherwise, the node found is returned unless the special adk:X()
/// marker function is contained in the predicate expression, which signals that the specified
/// repeatable element should always be created
/// </summary>
/// <param name="navigator"></param>
/// <param name="parentPath"></param>
/// <param name="currentStep"></param>
/// <returns></returns>
private INodePointer FindChild( XPathNavigator navigator, StringBuilder parentPath, AdkXPathStep currentStep )
{
String currentStepxPath = currentStep.ToString();
if ( currentStep.IsContextDependent() )
{
// If the special 'adk:x()' function is present, that means to always
// create the element, therefore, return null as if it were not found
if ( currentStepxPath.IndexOf( "adk:x" ) > -1 )
{
return null;
}
}
navigator.MoveToRoot();
SifXPathNavigator sifNav =
(SifXPathNavigator) navigator.SelectSingleNode( parentPath + "/" + currentStepxPath );
if ( sifNav != null )
{
return sifNav.UnderlyingPointer;
}
return null;
}
