Package org.apache.druid.query.aggregation.hyperloglog

Class HyperUniquesSerde

java.lang.Object

org.apache.druid.segment.serde.ComplexMetricSerde

org.apache.druid.query.aggregation.hyperloglog.HyperUniquesSerde

Direct Known Subclasses:

PreComputedHyperUniquesSerde

public class HyperUniquesSerde
extends ComplexMetricSerde

Field Summary

Fields

Modifier and Type	Field	Description
static final String	TYPE_NAME

Constructor Summary

Constructors

Constructor	Description
HyperUniquesSerde()
HyperUniquesSerde(HyperLogLogHash hyperLogLogHash)

Method Summary

Modifier and Type	Method	Description
ComplexMetricExtractor<HyperLogLogCollector>	getExtractor()
ObjectStrategy	getObjectStrategy()	This is deprecated because its usage is going to be removed from the code.
String	getTypeName()

Methods inherited from class org.apache.druid.segment.serde.ComplexMetricSerde

deserializeColumn, deserializeColumn, fromBytes, getSerializer, getSerializer, getTypeStrategy, inputSizeFn, toBytes

Methods inherited from class java.lang.Object

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

Field Details

TYPE_NAME

public static final String TYPE_NAME

See Also:

• Constant Field Values

Constructor Details

HyperUniquesSerde

public HyperUniquesSerde()

HyperUniquesSerde

public HyperUniquesSerde(HyperLogLogHash hyperLogLogHash)

Method Details

getTypeName

public String getTypeName()

Specified by:

getTypeName in class ComplexMetricSerde

getExtractor

public ComplexMetricExtractor<HyperLogLogCollector> getExtractor()

Specified by:

getExtractor in class ComplexMetricSerde

getObjectStrategy

public ObjectStrategy getObjectStrategy()

Description copied from class: ComplexMetricSerde

This is deprecated because its usage is going to be removed from the code.

It was introduced before deserializeColumn() existed. This method creates the assumption that Druid knows how to interpret the actual column representation of the data, but I would much prefer that the ComplexMetricSerde objects be in charge of creating and interpreting the whole column, which is what deserializeColumn lets them do.

Specified by:

getObjectStrategy in class ComplexMetricSerde

Returns:

an ObjectStrategy as used by GenericIndexed