Method tuple

piglet/src/main/java/org/apache/calcite/piglet/Handler.java:198–209

(List<Ast.Node> nodeList,
      RelDataType rowType)

  }

  private ImmutableList<RexLiteral> tuple(List<Ast.Node> nodeList,
      RelDataType rowType) {
    final ImmutableList.Builder<RexLiteral> listBuilder =
        ImmutableList.builder();
    for (Pair<Ast.Node, RelDataTypeField> pair
        : Pair.zip(nodeList, rowType.getFieldList())) {
      final Ast.Node node = pair.left;
      final RelDataType type = pair.right.getType();
      listBuilder.add(item(node, type));
    }
    return listBuilder.build();
  }

  private ImmutableList<RexLiteral> bag(List<Ast.Node> nodeList,
      RelDataType type) {