Method item

piglet/src/main/java/org/apache/calcite/piglet/Handler.java:221–238

(Ast.Node node, RelDataType type)

  }

  private RexLiteral item(Ast.Node node, RelDataType type) {
    final RexBuilder rexBuilder = builder.getRexBuilder();
    switch (node.op) {
    case LITERAL:
      final Ast.Literal literal = (Ast.Literal) node;
      return rexBuilder.makeLiteral(literal.value, type);
    case TUPLE:
      final Ast.Call tuple = (Ast.Call) node;
      final ImmutableList<RexLiteral> list = tuple(tuple.operands, type);
      return rexBuilder.makeLiteral(list, type);
    case BAG:
      final Ast.Call bag = (Ast.Call) node;
      final ImmutableList<RexLiteral> list2 = bag(bag.operands, type);
      return rexBuilder.makeLiteral(list2, type);
    default:
      throw new IllegalArgumentException("not a literal: " + node);
    }
  }


  private RelDataType toType(Ast.Schema schema) {