org.apache.iceberg

Class FieldMetrics<T>

java.lang.Object

org.apache.iceberg.FieldMetrics<T>

Direct Known Subclasses:

DoubleFieldMetrics, FloatFieldMetrics

public class FieldMetrics<T>
extends java.lang.Object

Iceberg internally tracked field level metrics.

Constructor Summary

Constructors

Constructor and Description
FieldMetrics(int id, long valueCount, long nullValueCount, long nanValueCount, T lowerBound, T upperBound)

Method Summary

Modifier and Type	Method and Description
boolean	hasBounds() Returns if the metrics has bounds (i.e.
int	id() Returns the id of the field that the metrics within this class are associated with.
T	lowerBound() Returns the lower bound value of this field.
long	nanValueCount() Returns the number of NaN values for this field.
long	nullValueCount() Returns the number of null values for this field.
T	upperBound() Returns the upper bound value of this field.
long	valueCount() Returns the number of all values, including nulls, NaN and repeated, for the given field.

Methods inherited from class java.lang.Object

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

Constructor Detail

FieldMetrics

public FieldMetrics(int id,
                    long valueCount,
                    long nullValueCount,
                    long nanValueCount,
                    T lowerBound,
                    T upperBound)

Method Detail

id

public int id()

Returns the id of the field that the metrics within this class are associated with.

valueCount

public long valueCount()

Returns the number of all values, including nulls, NaN and repeated, for the given field.

nullValueCount

public long nullValueCount()

Returns the number of null values for this field.

nanValueCount

public long nanValueCount()

Returns the number of NaN values for this field. Will only be non-0 if this field is a double or float field.

lowerBound

public T lowerBound()

Returns the lower bound value of this field.

upperBound

public T upperBound()

Returns the upper bound value of this field.

hasBounds

public boolean hasBounds()

Returns if the metrics has bounds (i.e. there is at least non-null value for this field)