/**
* Materializes the slots in sortTupleDesc_ referenced in the ordering exprs. Materializes the
* slots referenced by the corresponding sortTupleSlotExpr after applying the 'smap'.
*/
public void materializeRequiredSlots(Analyzer analyzer, ExprSubstitutionMap smap)
throws InternalException {
Preconditions.checkNotNull(sortTupleDesc_);
Preconditions.checkNotNull(sortTupleSlotExprs_);
Preconditions.checkState(sortTupleDesc_.getIsMaterialized());
analyzer.materializeSlots(orderingExprs_);
List<SlotDescriptor> sortTupleSlotDescs = sortTupleDesc_.getSlots();
List<Expr> materializedExprs = Lists.newArrayList();
for (int i = 0; i < sortTupleSlotDescs.size(); ++i) {
if (sortTupleSlotDescs.get(i).isMaterialized()) {
materializedExprs.add(sortTupleSlotExprs_.get(i));
}
}
List<Expr> substMaterializedExprs = Expr.substituteList(materializedExprs, smap, analyzer);
analyzer.materializeSlots(substMaterializedExprs);
}
