org.apache.paimon.mergetree.compact.aggregate

Class FieldFirstNonNullValueAgg

java.lang.Object

org.apache.paimon.mergetree.compact.aggregate.FieldAggregator

org.apache.paimon.mergetree.compact.aggregate.FieldFirstNonNullValueAgg

All Implemented Interfaces:

Serializable

public class FieldFirstNonNullValueAgg
extends FieldAggregator

first non-null value aggregate a field of a row.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	LEGACY_NAME
static String	NAME

Fields inherited from class org.apache.paimon.mergetree.compact.aggregate.FieldAggregator

fieldType

Constructor Summary

Constructors

Constructor and Description
FieldFirstNonNullValueAgg(DataType dataType)

Method Summary

Modifier and Type	Method and Description
Object	agg(Object accumulator, Object inputField)
void	reset() reset the aggregator to a clean start state.

Methods inherited from class org.apache.paimon.mergetree.compact.aggregate.FieldAggregator

aggReversed, createFieldAggregator, retract

Methods inherited from class java.lang.Object

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

Field Detail

NAME

public static final String NAME

See Also:

Constant Field Values

LEGACY_NAME

public static final String LEGACY_NAME

See Also:

Constant Field Values

Constructor Detail

FieldFirstNonNullValueAgg

public FieldFirstNonNullValueAgg(DataType dataType)

Method Detail

agg

public Object agg(Object accumulator,
                  Object inputField)

Specified by:

agg in class FieldAggregator

reset

public void reset()

Description copied from class: FieldAggregator

reset the aggregator to a clean start state.

Overrides:

reset in class FieldAggregator