org.apache.paimon.statistics

Class TruncateSimpleColStatsCollector

java.lang.Object

org.apache.paimon.statistics.AbstractSimpleColStatsCollector

org.apache.paimon.statistics.TruncateSimpleColStatsCollector

All Implemented Interfaces:

SimpleColStatsCollector

public class TruncateSimpleColStatsCollector
extends AbstractSimpleColStatsCollector

The truncate stats collector which will report null count, truncated min/max value. Currently, truncation only performs on the BinaryString value.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.paimon.statistics.SimpleColStatsCollector

SimpleColStatsCollector.Factory

Field Summary

Fields

Modifier and Type	Field and Description
static Pattern	TRUNCATE_PATTERN

Fields inherited from class org.apache.paimon.statistics.AbstractSimpleColStatsCollector

maxValue, minValue, nullCount

Constructor Summary

Constructors

Constructor and Description
TruncateSimpleColStatsCollector(int length)

Method Summary

Modifier and Type	Method and Description
void	collect(Object field, Serializer<Object> fieldSerializer) collect stats from the field.
SimpleColStats	convert(SimpleColStats source) Convert the col stats according to the strategy.
int	getLength()
SimpleColStats	result()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.paimon.statistics.SimpleColStatsCollector

create, createFullStatsFactories, from

Field Detail

TRUNCATE_PATTERN

public static final Pattern TRUNCATE_PATTERN

Constructor Detail

TruncateSimpleColStatsCollector

public TruncateSimpleColStatsCollector(int length)

Method Detail

getLength

public int getLength()

collect

public void collect(Object field,
                    Serializer<Object> fieldSerializer)

Description copied from interface: SimpleColStatsCollector

collect stats from the field.

Parameters:

field - The target field object.

fieldSerializer - The serializer of the field object.

convert

public SimpleColStats convert(SimpleColStats source)

Description copied from interface: SimpleColStatsCollector

Convert the col stats according to the strategy.

Parameters:

source - The source col stats, extracted from the file.

Returns:

The converted col stats.

result

public SimpleColStats result()

Specified by:

result in interface SimpleColStatsCollector

Overrides:

result in class AbstractSimpleColStatsCollector

Returns:

The collected col stats.