@Override
public PlanNode visitIndexSource(IndexSourceNode node, RewriteContext<Set<Symbol>> context) {
List<Symbol> newOutputSymbols =
node.getOutputSymbols()
.stream()
.filter(context.get()::contains)
.collect(toImmutableList());
Set<Symbol> newLookupSymbols =
node.getLookupSymbols()
.stream()
.filter(context.get()::contains)
.collect(toImmutableSet());
Set<Symbol> requiredAssignmentSymbols = context.get();
if (!node.getEffectiveTupleDomain().isNone()) {
Set<Symbol> requiredSymbols =
Maps.filterValues(
node.getAssignments(),
in(node.getEffectiveTupleDomain().getDomains().get().keySet()))
.keySet();
requiredAssignmentSymbols = Sets.union(context.get(), requiredSymbols);
}
Map<Symbol, ColumnHandle> newAssignments =
Maps.filterKeys(node.getAssignments(), in(requiredAssignmentSymbols));
return new IndexSourceNode(
node.getId(),
node.getIndexHandle(),
node.getTableHandle(),
newLookupSymbols,
newOutputSymbols,
newAssignments,
node.getEffectiveTupleDomain());
}
@Override
public Map<Symbol, Symbol> visitIndexSource(IndexSourceNode node, Set<Symbol> lookupSymbols) {
checkState(
node.getLookupSymbols().equals(lookupSymbols),
"lookupSymbols must be the same as IndexSource lookup symbols");
return lookupSymbols.stream().collect(toImmutableMap(identity(), identity()));
}
@Override
public Void visitIndexSource(IndexSourceNode node, Void context) {
printNode(
node,
format("IndexSource[%s]", node.getIndexHandle()),
NODE_COLORS.get(NodeType.INDEX_SOURCE));
return null;
}