hydra.langs.parquet.format.Statistics Maven / Gradle / Ivy

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package hydra.langs.parquet.format;

import java.io.Serializable;

/**
 * Statistics per row group and per page. All fields are optional.
 */
public class Statistics implements Serializable {
  public static final hydra.core.Name NAME = new hydra.core.Name("hydra/langs/parquet/format.Statistics");
  
  public final java.util.Optional nullCount;
  
  public final java.util.Optional distinctCount;
  
  public final java.util.Optional maxValue;
  
  public final java.util.Optional minValue;
  
  public Statistics (java.util.Optional nullCount, java.util.Optional distinctCount, java.util.Optional maxValue, java.util.Optional minValue) {
    this.nullCount = nullCount;
    this.distinctCount = distinctCount;
    this.maxValue = maxValue;
    this.minValue = minValue;
  }
  
  @Override
  public boolean equals(Object other) {
    if (!(other instanceof Statistics)) {
      return false;
    }
    Statistics o = (Statistics) (other);
    return nullCount.equals(o.nullCount) && distinctCount.equals(o.distinctCount) && maxValue.equals(o.maxValue) && minValue.equals(o.minValue);
  }
  
  @Override
  public int hashCode() {
    return 2 * nullCount.hashCode() + 3 * distinctCount.hashCode() + 5 * maxValue.hashCode() + 7 * minValue.hashCode();
  }
  
  public Statistics withNullCount(java.util.Optional nullCount) {
    return new Statistics(nullCount, distinctCount, maxValue, minValue);
  }
  
  public Statistics withDistinctCount(java.util.Optional distinctCount) {
    return new Statistics(nullCount, distinctCount, maxValue, minValue);
  }
  
  public Statistics withMaxValue(java.util.Optional maxValue) {
    return new Statistics(nullCount, distinctCount, maxValue, minValue);
  }
  
  public Statistics withMinValue(java.util.Optional minValue) {
    return new Statistics(nullCount, distinctCount, maxValue, minValue);
  }
}