How to use

getRowType

method

in

org.apache.calcite.rel.logical.LogicalTableFunctionScan

 ImmutableBitSet fieldsUsed,
 Set<RelDataTypeField> extraFields) {
final RelDataType rowType = tabFun.getRowType();
final int fieldCount = rowType.getFieldCount();
final List<RelNode> newInputs = new ArrayList<>();
if (!tabFun.getInputs().equals(newInputs)) {
 newTabFun = tabFun.copy(tabFun.getTraitSet(), newInputs,
   tabFun.getCall(), tabFun.getElementType(), tabFun.getRowType(),
   tabFun.getColumnMappings());

 ImmutableBitSet fieldsUsed,
 Set<RelDataTypeField> extraFields) {
final RelDataType rowType = tabFun.getRowType();
final int fieldCount = rowType.getFieldCount();
final List<RelNode> newInputs = new ArrayList<>();
if (!tabFun.getInputs().equals(newInputs)) {
 newTabFun = tabFun.copy(tabFun.getTraitSet(), newInputs,
   tabFun.getCall(), tabFun.getElementType(), tabFun.getRowType(),
   tabFun.getColumnMappings());

if (funcRel.getRowType().getFieldCount()
  != funcInputs.get(0).getRowType().getFieldCount()) {
 return;
List<RelDataTypeField> origFields = funcRel.getRowType().getFieldList();
    funcRel.getCall(), funcRel.getElementType(), funcRel.getRowType(),
    columnMappings);
call.transformTo(newFuncRel);

if (funcRel.getRowType().getFieldCount()
  != funcInputs.get(0).getRowType().getFieldCount()) {
 return;
List<RelDataTypeField> origFields = funcRel.getRowType().getFieldList();
    funcRel.getCall(), funcRel.getElementType(), funcRel.getRowType(),
    columnMappings);
call.transformTo(newFuncRel);

 @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()
 );
}