//TODO: merge anchor() and parent()
public virtual TreeReference contextualize(TreeReference contextRef)
{
//TODO: Technically we should possibly be modifying context stuff here
//instead of in the xpath stuff;
if (!contextRef.Absolute)
{
return(null);
}
// I think contextualizing of absolute nodes still needs to be done.
// They may contain predicates that need to be contextualized.
TreeReference newRef = anchor(contextRef);
// unclear...
newRef.Context = contextRef.Context;
//apply multiplicites and fill in wildcards as necessary based on the context ref
for (int i = 0; i < contextRef.size() && i < newRef.size(); i++)
{
//If the the contextRef can provide a definition for a wildcard, do so
if (TreeReference.NAME_WILDCARD.Equals(newRef.getName(i)) && !TreeReference.NAME_WILDCARD.Equals(contextRef.getName(i)))
{
newRef.data.setElementAt(newRef.data.elementAt(i).setName(contextRef.getName(i)), i);
}
if (contextRef.getName(i).Equals(newRef.getName(i)))
{
//We can't actually merge nodes if the newRef has predicates or filters
//on this expression, since those reset any existing resolutions which
//may have been done.
if (newRef.getPredicate(i) == null)
{
newRef.setMultiplicity(i, contextRef.getMultiplicity(i));
}
}
else
{
break;
}
}
return(newRef);
}
