How to use

getTraitSet

method

in

org.apache.calcite.rel.core.Calc

  @Override
  public RelNode convert(RelNode rel) {
    final Calc calc = (Calc) rel;
    final RelNode input = calc.getInput();

    return new StreamsCalcRel(calc.getCluster(), calc.getTraitSet().replace(StreamsLogicalConvention.INSTANCE),
                 convert(input, input.getTraitSet().replace(StreamsLogicalConvention.INSTANCE)),
                 calc.getProgram());
  }
}

/**
 * Constructs a CalcRelSplitter.
 *
 * @param calc     Calc to split
 * @param relTypes Array of rel types, e.g. {Java, Fennel}. Must be
 *                 distinct.
 */
CalcRelSplitter(Calc calc, RelBuilder relBuilder, RelType[] relTypes) {
 this.relBuilder = relBuilder;
 for (int i = 0; i < relTypes.length; i++) {
  assert relTypes[i] != null;
  for (int j = 0; j < i; j++) {
   assert relTypes[i] != relTypes[j]
     : "Rel types must be distinct";
  }
 }
 this.program = calc.getProgram();
 this.cluster = calc.getCluster();
 this.traits = calc.getTraitSet();
 this.typeFactory = calc.getCluster().getTypeFactory();
 this.child = calc.getInput();
 this.relTypes = relTypes;
}

/**
 * Constructs a CalcRelSplitter.
 *
 * @param calc     Calc to split
 * @param relTypes Array of rel types, e.g. {Java, Fennel}. Must be
 *                 distinct.
 */
CalcRelSplitter(Calc calc, RelBuilder relBuilder, RelType[] relTypes) {
 this.relBuilder = relBuilder;
 for (int i = 0; i < relTypes.length; i++) {
  assert relTypes[i] != null;
  for (int j = 0; j < i; j++) {
   assert relTypes[i] != relTypes[j]
     : "Rel types must be distinct";
  }
 }
 this.program = calc.getProgram();
 this.cluster = calc.getCluster();
 this.traits = calc.getTraitSet();
 this.typeFactory = calc.getCluster().getTypeFactory();
 this.child = calc.getInput();
 this.relTypes = relTypes;
}

 public RelNode convert(RelNode rel) {
  final Calc calc = (Calc) rel;
  // If there's a multiset, let FarragoMultisetSplitter work on it
  // first.
  if (RexMultisetUtil.containsMultiset(calc.getProgram())) {
   return null;
  }
  return new JdbcCalc(rel.getCluster(), rel.getTraitSet().replace(out),
    convert(calc.getInput(), calc.getTraitSet().replace(out)),
    calc.getProgram());
 }
}

 public RelNode convert(RelNode rel) {
  final Calc calc = (Calc) rel;
  // If there's a multiset, let FarragoMultisetSplitter work on it
  // first.
  if (RexMultisetUtil.containsMultiset(calc.getProgram())) {
   return null;
  }
  return new JdbcCalc(rel.getCluster(), rel.getTraitSet().replace(out),
    convert(calc.getInput(), calc.getTraitSet().replace(out)),
    calc.getProgram());
 }
}

calc.copy(calc.getTraitSet(), calc.getInput(), builder.getProgram()));

calc.copy(calc.getTraitSet(), calc.getInput(), builder.getProgram()));

final Calc newCalc =
  topCalc.copy(
    topCalc.getTraitSet(),
    bottomCalc.getInput(),
    mergedProgram);

final Calc newCalc =
  topCalc.copy(
    topCalc.getTraitSet(),
    bottomCalc.getInput(),
    mergedProgram);

calc.copy(calc.getTraitSet(), newJoinRel, topProgramBuilder.getProgram());