private static TruthValue evaluatePredicateMinMax()

in java/core/src/java/org/apache/orc/impl/RecordReaderImpl.java [800:895]
90 lines of code
38 McCabe index (conditional complexity)

  private static TruthValue evaluatePredicateMinMax(PredicateLeaf predicate,
                                                    Comparable predObj,
                                                    ValueRange range) {
    Location loc;

    switch (predicate.getOperator()) {
      case NULL_SAFE_EQUALS:
        loc = range.compare(predObj);
        if (loc == Location.BEFORE || loc == Location.AFTER) {
          return TruthValue.NO;
        } else {
          return TruthValue.YES_NO;
        }
      case EQUALS:
        loc = range.compare(predObj);
        if (range.isSingleton() && loc == Location.MIN) {
          return range.addNull(TruthValue.YES);
        } else if (loc == Location.BEFORE || loc == Location.AFTER) {
          return range.addNull(TruthValue.NO);
        } else {
          return range.addNull(TruthValue.YES_NO);
        }
      case LESS_THAN:
        loc = range.compare(predObj);
        if (loc == Location.AFTER) {
          return range.addNull(TruthValue.YES);
        } else if (loc == Location.BEFORE || loc == Location.MIN) {
          return range.addNull(TruthValue.NO);
        } else {
          return range.addNull(TruthValue.YES_NO);
        }
      case LESS_THAN_EQUALS:
        loc = range.compare(predObj);
        if (loc == Location.AFTER || loc == Location.MAX ||
            (loc == Location.MIN && range.isSingleton())) {
          return range.addNull(TruthValue.YES);
        } else if (loc == Location.BEFORE) {
          return range.addNull(TruthValue.NO);
        } else {
          return range.addNull(TruthValue.YES_NO);
        }
      case IN:
        if (range.isSingleton()) {
          // for a single value, look through to see if that value is in the
          // set
          for (Object arg : predicate.getLiteralList()) {
            predObj = getBaseObjectForComparison(predicate.getType(), (Comparable) arg);
            if (range.compare(predObj) == Location.MIN) {
              return range.addNull(TruthValue.YES);
            }
          }
          return range.addNull(TruthValue.NO);
        } else {
          // are all of the values outside of the range?
          for (Object arg : predicate.getLiteralList()) {
            predObj = getBaseObjectForComparison(predicate.getType(), (Comparable) arg);
            loc = range.compare(predObj);
            if (loc == Location.MIN || loc == Location.MIDDLE ||
                loc == Location.MAX) {
              return range.addNull(TruthValue.YES_NO);
            }
          }
          return range.addNull(TruthValue.NO);
        }
      case BETWEEN:
        List<Object> args = predicate.getLiteralList();
        if (args == null || args.isEmpty()) {
          return range.addNull(TruthValue.YES_NO);
        }
        Comparable predObj1 = getBaseObjectForComparison(predicate.getType(),
            (Comparable) args.get(0));

        loc = range.compare(predObj1);
        if (loc == Location.BEFORE || loc == Location.MIN) {
          Comparable predObj2 = getBaseObjectForComparison(predicate.getType(),
              (Comparable) args.get(1));
          Location loc2 = range.compare(predObj2);
          if (loc2 == Location.AFTER || loc2 == Location.MAX) {
            return range.addNull(TruthValue.YES);
          } else if (loc2 == Location.BEFORE) {
            return range.addNull(TruthValue.NO);
          } else {
            return range.addNull(TruthValue.YES_NO);
          }
        } else if (loc == Location.AFTER) {
          return range.addNull(TruthValue.NO);
        } else {
          return range.addNull(TruthValue.YES_NO);
        }
      case IS_NULL:
        // min = null condition above handles the all-nulls YES case
        return range.hasNulls ? TruthValue.YES_NO : TruthValue.NO;
      default:
        return range.addNull(TruthValue.YES_NO);
    }
  }