How to use

setMinMax

method

in

org.apache.parquet.column.statistics.FloatStatistics

@SuppressWarnings("unchecked")
private Statistics<T> getStatistics(float min, float max) {
 final Statistics<T> statistics = Statistics.getStatsBasedOnType(PrimitiveType.PrimitiveTypeName.FLOAT);
 ((FloatStatistics) statistics).setMinMax(min, max);
 return statistics;
}

 @Override
 public Statistics<?> build() {
  FloatStatistics stats = (FloatStatistics) super.build();
  if (stats.hasNonNullValue()) {
   Float min = stats.genericGetMin();
   Float max = stats.genericGetMax();
   // Drop min/max values in case of NaN as the sorting order of values is undefined for this case
   if (min.isNaN() || max.isNaN()) {
    stats.setMinMax(0.0f, 0.0f);
    ((Statistics<?>) stats).hasNonNullValue = false;
   } else {
    // Updating min to -0.0 and max to +0.0 to ensure that no 0.0 values would be skipped
    if (Float.compare(min, 0.0f) == 0) {
     min = -0.0f;
     stats.setMinMax(min, max);
    }
    if (Float.compare(max, -0.0f) == 0) {
     max = 0.0f;
     stats.setMinMax(min, max);
    }
   }
  }
  return stats;
 }
}

 @Override
 public Statistics<?> build() {
  FloatStatistics stats = (FloatStatistics) super.build();
  if (stats.hasNonNullValue()) {
   Float min = stats.genericGetMin();
   Float max = stats.genericGetMax();
   // Drop min/max values in case of NaN as the sorting order of values is undefined for this case
   if (min.isNaN() || max.isNaN()) {
    stats.setMinMax(0.0f, 0.0f);
    ((Statistics<?>) stats).hasNonNullValue = false;
   } else {
    // Updating min to -0.0 and max to +0.0 to ensure that no 0.0 values would be skipped
    if (Float.compare(min, 0.0f) == 0) {
     min = -0.0f;
     stats.setMinMax(min, max);
    }
    if (Float.compare(max, -0.0f) == 0) {
     max = 0.0f;
     stats.setMinMax(min, max);
    }
   }
  }
  return stats;
 }
}

private static FloatStatistics floatColumnStats(float minimum, float maximum)
{
  FloatStatistics statistics = new FloatStatistics();
  statistics.setMinMax(minimum, maximum);
  return statistics;
}

 break;
case FLOAT4:
 ((FloatStatistics) stat).setMinMax(Float.parseFloat(min.toString()), Float.parseFloat(max.toString()));
 break;
case FLOAT8: