Package org.apache.druid.query.aggregation

Class SerializablePairLongLongComplexMetricSerde

java.lang.Object

org.apache.druid.segment.serde.ComplexMetricSerde

org.apache.druid.query.aggregation.AbstractSerializableLongObjectPairSerde<SerializablePairLongLong>

org.apache.druid.query.aggregation.SerializablePairLongLongComplexMetricSerde

public class SerializablePairLongLongComplexMetricSerde
extends AbstractSerializableLongObjectPairSerde<SerializablePairLongLong>

Field Summary

Fields

Modifier and Type	Field	Description
static final int	EXPECTED_VERSION
static final String	TYPE_NAME

Constructor Summary

Constructors

Constructor	Description
SerializablePairLongLongComplexMetricSerde()

Method Summary

Modifier and Type	Method	Description
void	deserializeColumn(ByteBuffer buffer, ColumnBuilder columnBuilder)	ComplexMetricSerde.deserializeColumn(ByteBuffer, ColumnBuilder, ColumnConfig) should be used instead of this.
ObjectStrategy<SerializablePairLongLong>	getObjectStrategy()	This is deprecated because its usage is going to be removed from the code.
GenericColumnSerializer<SerializablePairLongLong>	getSerializer(SegmentWriteOutMedium segmentWriteOutMedium, String column, IndexSpec indexSpec)	This method provides the ability for a ComplexMetricSerde to control its own serialization.
String	getTypeName()
TypeStrategy<SerializablePairLongLong>	getTypeStrategy()	Get a TypeStrategy to assist with writing individual complex values to a ByteBuffer.

Methods inherited from class org.apache.druid.query.aggregation.AbstractSerializableLongObjectPairSerde

getExtractor

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

deserializeColumn, fromBytes, getSerializer, inputSizeFn, toBytes

Methods inherited from class java.lang.Object

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

Field Details

EXPECTED_VERSION

public static final int EXPECTED_VERSION

See Also:

• Constant Field Values

TYPE_NAME

public static final String TYPE_NAME

See Also:

• Constant Field Values

Constructor Details

SerializablePairLongLongComplexMetricSerde

public SerializablePairLongLongComplexMetricSerde()

Method Details

getTypeName

public String getTypeName()

Specified by:

getTypeName in class ComplexMetricSerde

getSerializer

public GenericColumnSerializer<SerializablePairLongLong> getSerializer(SegmentWriteOutMedium segmentWriteOutMedium,
 String column,
 IndexSpec indexSpec)

Description copied from class: ComplexMetricSerde

This method provides the ability for a ComplexMetricSerde to control its own serialization. Default implementation uses CompressedComplexColumnSerializer if IndexSpec.complexMetricCompression is not null or uncompressed/none, or LargeColumnSupportedComplexColumnSerializer if no compression is specified.

Overrides:

getSerializer in class ComplexMetricSerde

Returns:

an instance of GenericColumnSerializer used for serialization.

deserializeColumn

public void deserializeColumn(ByteBuffer buffer,
 ColumnBuilder columnBuilder)

Description copied from class: ComplexMetricSerde

ComplexMetricSerde.deserializeColumn(ByteBuffer, ColumnBuilder, ColumnConfig) should be used instead of this. This method is left for backward compatibility.

Overrides:

deserializeColumn in class ComplexMetricSerde

getObjectStrategy

public ObjectStrategy<SerializablePairLongLong> 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

getTypeStrategy

public TypeStrategy<SerializablePairLongLong> getTypeStrategy()

Description copied from class: ComplexMetricSerde

Get a TypeStrategy to assist with writing individual complex values to a ByteBuffer.

Overrides:

getTypeStrategy in class ComplexMetricSerde

See Also:

• TypeStrategy