How to use

singleton

method

in

org.apache.calcite.sql.SqlSplittableAggFunction

if (splitter != null) {
 final RelDataType rowType = relBuilder.peek().getRowType();
 projects2.add(splitter.singleton(rexBuilder, rowType, newAggCall));

if (splitter != null) {
 projects2.add(
   splitter.singleton(rexBuilder, r.getRowType(), newAggCall));

 if (!aggCall.e.getArgList().isEmpty()
   && fieldSet.contains(ImmutableBitSet.of(aggCall.e.getArgList()))) {
  final RexNode singleton = splitter.singleton(rexBuilder,
    joinInput.getRowType(), aggCall.e.transform(mapping));
if (splitter != null) {
 final RelDataType rowType = relBuilder.peek().getRowType();
 projects2.add(splitter.singleton(rexBuilder, rowType, newAggCall));

 if (!aggCall.e.getArgList().isEmpty()
   && fieldSet.contains(ImmutableBitSet.of(aggCall.e.getArgList()))) {
  final RexNode singleton = splitter.singleton(rexBuilder,
    joinInput.getRowType(), aggCall.e.transform(mapping));
if (splitter != null) {
 final RelDataType rowType = relBuilder.peek().getRowType();
 projects2.add(splitter.singleton(rexBuilder, rowType, newAggCall));

  if (!aggCall.e.getArgList().isEmpty()
      && fieldSet.contains(ImmutableBitSet.of(aggCall.e.getArgList()))) {
    final RexNode singleton = splitter.singleton(rexBuilder,
        joinInput.getRowType(), aggCall.e.transform(mapping));
    final RexNode targetSingleton = rexBuilder.ensureType(aggCall.e.type, singleton, false);
if (splitter != null) {
  final RelDataType rowType = relBuilder.peek().getRowType();
  final RexNode singleton = splitter.singleton(rexBuilder, rowType, newAggCall);
  final RelDataType originalAggCallType =
      aggregate.getRowType().getFieldList().get(aggCallIdx).getType();