/**
* Dereference the variable, and return the reference value. Note that lazy evaluation will occur.
* If a variable within scope is not found, a warning will be sent to the error listener, and an
* empty nodeset will be returned.
*
* @param xctxt The runtime execution context.
* @return The evaluated variable, or an empty nodeset if not found.
* @throws javax.xml.transform.TransformerException
*/
public XObject execute(XPathContext xctxt, boolean destructiveOK)
throws javax.xml.transform.TransformerException {
XNodeSet xns = (XNodeSet) super.execute(xctxt, destructiveOK);
DTMManager dtmMgr = xctxt.getDTMManager();
int context = xctxt.getContextNode();
if (dtmMgr.getDTM(xns.getRoot()).getDocument() != dtmMgr.getDTM(context).getDocument()) {
Expression expr = (Expression) xns.getContainedIter();
xns = (XNodeSet) expr.asIterator(xctxt, context);
}
return xns;
}
