public RESULT visitChild()

in tajo-core/tajo-core-backend/src/main/java/org/apache/tajo/engine/eval/BasicEvalNodeVisitor.java [26:139]
98 lines of code
31 McCabe index (conditional complexity)

  public RESULT visitChild(CONTEXT context, EvalNode evalNode, Stack<EvalNode> stack) {
    RESULT result;
    switch (evalNode.getType()) {
      // Column and Value reference expressions
      case CONST:
        result = visitConst(context, (ConstEval) evalNode, stack);
        break;
      case ROW_CONSTANT:
        result = visitRowConstant(context, (RowConstantEval) evalNode, stack);
        break;
      case FIELD:
        result = visitField(context, stack, (FieldEval) evalNode);
        break;

      // Arithmetic expression
      case PLUS:
        result = visitPlus(context, (BinaryEval) evalNode, stack);
        break;
      case MINUS:
        result = visitMinus(context, (BinaryEval) evalNode, stack);
        break;
      case MULTIPLY:
        result = visitMultiply(context, (BinaryEval) evalNode, stack);
        break;
      case DIVIDE:
        result = visitDivide(context, (BinaryEval) evalNode, stack);
        break;
      case MODULAR:
        result = visitModular(context, (BinaryEval) evalNode, stack);
        break;

      // Logical Predicates
      case AND:
        result = visitAnd(context, (BinaryEval) evalNode, stack);
        break;
      case OR:
        result = visitOr(context, (BinaryEval) evalNode, stack);
        break;
      case NOT:
        result = visitNot(context, (NotEval) evalNode, stack);
        break;

      // Comparison Predicates
      case EQUAL:
        result = visitEqual(context, (BinaryEval) evalNode, stack);
        break;
      case NOT_EQUAL:
        result = visitNotEqual(context, (BinaryEval) evalNode, stack);
        break;
      case LTH:
        result = visitLessThan(context, (BinaryEval) evalNode, stack);
        break;
      case LEQ:
        result = visitLessThanOrEqual(context, (BinaryEval) evalNode, stack);
        break;
      case GTH:
        result = visitGreaterThan(context, (BinaryEval) evalNode, stack);
        break;
      case GEQ:
        result = visitGreaterThanOrEqual(context, (BinaryEval) evalNode, stack);
        break;

      // SQL standard predicates
      case IS_NULL:
        result = visitIsNull(context, (IsNullEval) evalNode, stack);
        break;
      case BETWEEN:
        result = visitBetween(context, (BetweenPredicateEval) evalNode, stack);
        break;
      case CASE:
        result = visitCaseWhen(context, (CaseWhenEval) evalNode, stack);
        break;
      case IF_THEN:
        result = visitIfThen(context, (CaseWhenEval.IfThenEval) evalNode, stack);
        break;
      case IN:
        result = visitInPredicate(context, (InEval) evalNode, stack);
        break;

      // String operators and Pattern match predicates
      case LIKE:
        result = visitLike(context, (LikePredicateEval) evalNode, stack);
        break;
      case SIMILAR_TO:
        result = visitSimilarTo(context, (SimilarToPredicateEval) evalNode, stack);
        break;
      case REGEX:
        result = visitRegex(context, (RegexPredicateEval) evalNode, stack);
        break;
      case CONCATENATE:
        result = visitConcatenate(context, (BinaryEval) evalNode, stack);
        break;

      // Functions
      case FUNCTION:
        result = visitFuncCall(context, (GeneralFunctionEval) evalNode, stack);
        break;
      case AGG_FUNCTION:
        result = visitAggrFuncCall(context, (AggregationFunctionCallEval) evalNode, stack);
        break;

      case SIGNED:
        result = visitSigned(context, (SignedEval) evalNode, stack);
        break;
      case CAST:
        result = visitCast(context, (CastEval) evalNode, stack);
        break;

      default:
        throw new InvalidEvalException("Unknown EvalNode: " + evalNode);
    }

    return result;
  }