/**
* Determine the data type of the items returned by this expression
*
* @return Type.NODE or a subtype, based on the NodeTest in the axis step, plus information about
* the content type if this is known from schema analysis
* @param th the type hierarchy cache
*/
public final ItemType getItemType(TypeHierarchy th) {
if (itemType != null) {
return itemType;
}
int p = Axis.principalNodeType[axis];
switch (p) {
case Type.ATTRIBUTE:
case Type.NAMESPACE:
return NodeKindTest.makeNodeKindTest(p);
default:
if (test == null) {
return AnyNodeTest.getInstance();
} else {
return test;
// return NodeKindTest.makeNodeKindTest(test.getPrimitiveType());
}
}
}
