Package org.apache.pinot.segment.local.aggregator

Class CountValueAggregator

java.lang.Object

org.apache.pinot.segment.local.aggregator.CountValueAggregator

All Implemented Interfaces:

ValueAggregator<Object,Long>

public class CountValueAggregator
extends Object
implements ValueAggregator<Object,Long>

Field Summary

Fields

Modifier and Type	Field	Description
static FieldSpec.DataType	AGGREGATED_VALUE_TYPE

Constructor Summary

Constructors

Constructor	Description
CountValueAggregator()

Method Summary

Modifier and Type	Method	Description
Long	applyAggregatedValue(Long value, Long aggregatedValue)	Applies an aggregated value to the current aggregated value.
Long	applyRawValue(Long value, Object rawValue)	Applies a raw value to the current aggregated value.
Long	cloneAggregatedValue(Long value)	Clones an aggregated value.
Long	deserializeAggregatedValue(byte[] bytes)	De-serializes an aggregated value from a byte array.
FieldSpec.DataType	getAggregatedValueType()	Returns the data type of the aggregated value.
AggregationFunctionType	getAggregationType()	Returns the type of the aggregation.
Long	getInitialAggregatedValue(Object rawValue)	Returns the initial aggregated value.
int	getMaxAggregatedValueByteSize()	Returns the maximum size in bytes of the aggregated values seen so far.
byte[]	serializeAggregatedValue(Long value)	Serializes an aggregated value into a byte array.

Methods inherited from class java.lang.Object

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

Field Detail

AGGREGATED_VALUE_TYPE

public static final FieldSpec.DataType AGGREGATED_VALUE_TYPE

Constructor Detail

CountValueAggregator

public CountValueAggregator()

Method Detail

getAggregationType

public AggregationFunctionType getAggregationType()

Description copied from interface: ValueAggregator

Returns the type of the aggregation.

Specified by:

getAggregationType in interface ValueAggregator<Object,Long>

getAggregatedValueType

public FieldSpec.DataType getAggregatedValueType()

Description copied from interface: ValueAggregator

Returns the data type of the aggregated value.

Specified by:

getAggregatedValueType in interface ValueAggregator<Object,Long>

getInitialAggregatedValue

public Long getInitialAggregatedValue(Object rawValue)

Description copied from interface: ValueAggregator

Returns the initial aggregated value.

Specified by:

getInitialAggregatedValue in interface ValueAggregator<Object,Long>

applyRawValue

public Long applyRawValue(Long value,
                          Object rawValue)

Description copied from interface: ValueAggregator

Applies a raw value to the current aggregated value.

NOTE: if value is mutable, will directly modify the value.

Specified by:

applyRawValue in interface ValueAggregator<Object,Long>

applyAggregatedValue

public Long applyAggregatedValue(Long value,
                                 Long aggregatedValue)

Description copied from interface: ValueAggregator

Applies an aggregated value to the current aggregated value.

NOTE: if value is mutable, will directly modify the value.

Specified by:

applyAggregatedValue in interface ValueAggregator<Object,Long>

cloneAggregatedValue

public Long cloneAggregatedValue(Long value)

Description copied from interface: ValueAggregator

Clones an aggregated value.

Specified by:

cloneAggregatedValue in interface ValueAggregator<Object,Long>

getMaxAggregatedValueByteSize

public int getMaxAggregatedValueByteSize()

Description copied from interface: ValueAggregator

Returns the maximum size in bytes of the aggregated values seen so far.

Specified by:

getMaxAggregatedValueByteSize in interface ValueAggregator<Object,Long>

serializeAggregatedValue

public byte[] serializeAggregatedValue(Long value)

Description copied from interface: ValueAggregator

Serializes an aggregated value into a byte array.

Specified by:

serializeAggregatedValue in interface ValueAggregator<Object,Long>

deserializeAggregatedValue

public Long deserializeAggregatedValue(byte[] bytes)

Description copied from interface: ValueAggregator

De-serializes an aggregated value from a byte array.

Specified by:

deserializeAggregatedValue in interface ValueAggregator<Object,Long>