How to use

RelOptUtil$InputFinder

in

org.apache.calcite.plan

  mq.getPulledUpPredicates(join).pulledUpPredicates);
final ImmutableBitSet joinColumns =
  RelOptUtil.InputFinder.bits(join.getCondition());
final boolean allColumnsInAggregate =
  keyColumns.contains(joinColumns);

  new LinkedHashSet<RelDataTypeField>(extraFields);
RelOptUtil.InputFinder inputFinder =
  new RelOptUtil.InputFinder(combinedInputExtraFields);
inputFinder.inputBitSet.addAll(fieldsUsed);
conditionExpr.accept(inputFinder);

  new LinkedHashSet<>(extraFields);
RelOptUtil.InputFinder inputFinder =
  new RelOptUtil.InputFinder(combinedInputExtraFields);
inputFinder.inputBitSet.addAll(fieldsUsed);
conditionExpr.accept(inputFinder);

  new LinkedHashSet<>(extraFields);
RelOptUtil.InputFinder inputFinder =
  new RelOptUtil.InputFinder(combinedInputExtraFields);
inputFinder.inputBitSet.addAll(fieldsUsed);
conditionExpr.accept(inputFinder);

final InputFinder inputFinder = InputFinder.analyze(filter);
final ImmutableBitSet inputBits = inputFinder.inputBitSet.build();

final InputFinder inputFinder = InputFinder.analyze(filter);
final ImmutableBitSet inputBits = inputFinder.inputBitSet.build();

final RelOptUtil.InputFinder inputFinder = new RelOptUtil.InputFinder();
inputFinder.inputBitSet.addAll(fieldsUsed);
originalJoinFilter.accept(inputFinder);

final RelOptUtil.InputFinder inputFinder = new RelOptUtil.InputFinder(inputExtraFields);
pred.accept(inputFinder);
final ImmutableBitSet inputFieldsUsed = inputFinder.inputBitSet.build();

final RelOptUtil.InputFinder inputFinder = new RelOptUtil.InputFinder(inputExtraFields);
pred.accept(inputFinder);
final ImmutableBitSet inputFieldsUsed = inputFinder.inputBitSet.build();

  new LinkedHashSet<>(extraFields);
RelOptUtil.InputFinder inputFinder =
  new RelOptUtil.InputFinder(inputExtraFields);
for (Ord<RexNode> ord : Ord.zip(project.getProjects())) {
 if (fieldsUsed.get(ord.i)) {

  new LinkedHashSet<>(extraFields);
RelOptUtil.InputFinder inputFinder =
  new RelOptUtil.InputFinder(inputExtraFields);
for (Ord<RexNode> ord : Ord.zip(project.getProjects())) {
 if (fieldsUsed.get(ord.i)) {

  RelOptUtil.InputFinder.bits(mutableFilters, null);
if (projects != null) {
 int changeCount = 0;

InputFinder.bits(project.getProjects(), multiJoin.getPostJoinFilter());

final Aggregate aggregate = call.rel(1);
final ImmutableBitSet projectBits = RelOptUtil.InputFinder.bits(project.getChildExps(), null);

ImmutableBitSet left = RelOptUtil.InputFinder.bits(equalsOperands.get(0));
ImmutableBitSet right = RelOptUtil.InputFinder.bits(equalsOperands.get(1));
if (!left.isEmpty() && !right.isEmpty() && left.intersect(right).isEmpty()) {
 return call;

if (project != null) {
 final ImmutableBitSet bits =
   RelOptUtil.InputFinder.bits(project.getProjects(), null);
 final ImmutableBitSet rightBits =
   ImmutableBitSet.range(left.getRowType().getFieldCount(),

if (project != null) {
 final ImmutableBitSet bits =
   RelOptUtil.InputFinder.bits(project.getProjects(), null);
 final ImmutableBitSet rightBits =
   ImmutableBitSet.range(left.getRowType().getFieldCount(),

ImmutableBitSet rCols = RelOptUtil.InputFinder.bits(r);
if (columnsMapped.contains(rCols)) {

  final RexCall call = (RexCall) e;
  assert DruidDateTimeUtils.extractGranularity(call, timeZone) != null;
  index = RelOptUtil.InputFinder.bits(e).asList().get(0);
  break;
case IS_TRUE:

ImmutableBitSet left = RelOptUtil.InputFinder.bits(equalsOperands.get(0));
ImmutableBitSet right = RelOptUtil.InputFinder.bits(equalsOperands.get(1));
if (!left.isEmpty() && !right.isEmpty() && left.intersect(right).isEmpty()) {
 return call;