How to use

getInputs

method

in

org.apache.calcite.rel.logical.LogicalTableFunctionScan

final List<RelNode> newInputs = new ArrayList<>();
for (RelNode input : tabFun.getInputs()) {
 final int inputFieldCount = input.getRowType().getFieldCount();
 ImmutableBitSet inputFieldsUsed = ImmutableBitSet.range(inputFieldCount);
if (!tabFun.getInputs().equals(newInputs)) {
 newTabFun = tabFun.copy(tabFun.getTraitSet(), newInputs,
   tabFun.getCall(), tabFun.getElementType(), tabFun.getRowType(),

final List<RelNode> newInputs = new ArrayList<>();
for (RelNode input : tabFun.getInputs()) {
 final int inputFieldCount = input.getRowType().getFieldCount();
 ImmutableBitSet inputFieldsUsed = ImmutableBitSet.range(inputFieldCount);
if (!tabFun.getInputs().equals(newInputs)) {
 newTabFun = tabFun.copy(tabFun.getTraitSet(), newInputs,
   tabFun.getCall(), tabFun.getElementType(), tabFun.getRowType(),

 @Override public RelNode convert(RelNode rel) {
  final RelTraitSet traitSet =
    rel.getTraitSet().replace(EnumerableConvention.INSTANCE);
  LogicalTableFunctionScan tbl = (LogicalTableFunctionScan) rel;
  return new EnumerableTableFunctionScan(rel.getCluster(), traitSet,
    tbl.getInputs(), tbl.getElementType(), tbl.getRowType(),
    tbl.getCall(), tbl.getColumnMappings());
 }
}

 @Override public RelNode convert(RelNode rel) {
  final RelTraitSet traitSet =
    rel.getTraitSet().replace(EnumerableConvention.INSTANCE);
  LogicalTableFunctionScan tbl = (LogicalTableFunctionScan) rel;
  return new EnumerableTableFunctionScan(rel.getCluster(), traitSet,
    tbl.getInputs(), tbl.getElementType(), tbl.getRowType(),
    tbl.getCall(), tbl.getColumnMappings());
 }
}

private RelNode copyOf(LogicalTableFunctionScan rel) {
 return new LogicalTableFunctionScan(
  cluster,
  copyOf(rel.getTraitSet()),
  visitAll(rel.getInputs()),
  copyOf(rel.getCall()),
  rel.getElementType(),
  copyOf(rel.getRowType()),
  rel.getColumnMappings()
 );
}

List<RelNode> funcInputs = funcRel.getInputs();
if (funcInputs.size() != 1) {

List<RelNode> funcInputs = funcRel.getInputs();
if (funcInputs.size() != 1) {