org.apache.parquet.filter2.predicate

Class Statistics<T>

java.lang.Object

org.apache.parquet.filter2.predicate.Statistics<T>

Type Parameters:

T - the type of values described by the statistics instance

public class Statistics<T>
extends Object

Contains statistics about a group of records

Constructor Summary

Constructors

Constructor and Description
Statistics(T min, T max) Deprecated. will be removed in 2.0.0. Use Statistics(Object, Object, Comparator) instead
Statistics(T min, T max, Comparator<T> comparator)

Method Summary

Modifier and Type	Method and Description
Comparator<T>	getComparator() Returns the comparator to be used to compare two generic values in the proper way (e.g.
T	getMax() Returns the generic object representing the max value in the statistics.
T	getMin() Returns the generic object representing the min value in the statistics.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Statistics

@Deprecated
public Statistics(T min,
                              T max)

Deprecated. will be removed in 2.0.0. Use Statistics(Object, Object, Comparator) instead

Parameters:

min - the min value

max - the max value

Statistics

public Statistics(T min,
                  T max,
                  Comparator<T> comparator)

Parameters:

min - the min value

max - the max value

comparator - a comparator to use when comparing values described by this statistics instance

Method Detail

getMin

public T getMin()

Returns the generic object representing the min value in the statistics. The natural ordering of type T defined by the compareTo method might not be appropriate for the actual logical type. Use getComparator() for comparing.

Returns:

the min value

getMax

public T getMax()

Returns the generic object representing the max value in the statistics. The natural ordering of type T defined by the compareTo method might not be appropriate for the actual logical type. Use getComparator() for comparing.

Returns:

the max value

getComparator

public Comparator<T> getComparator()

Returns the comparator to be used to compare two generic values in the proper way (e.g. unsigned comparison for UINT_32)

Returns:

a comparator for the values described by the statistics instance