Package org.apache.druid.query.aggregation

Class AbstractSerializablePairLongObjectColumnSerializer<T extends SerializablePair<Long,?>>

java.lang.Object

org.apache.druid.query.aggregation.AbstractSerializablePairLongObjectColumnSerializer<T>

All Implemented Interfaces:

GenericColumnSerializer<T>, Serializer

Direct Known Subclasses:

SerializablePairLongDoubleColumnSerializer, SerializablePairLongFloatColumnSerializer, SerializablePairLongLongColumnSerializer, SerializablePairLongStringColumnSerializer

public abstract class AbstractSerializablePairLongObjectColumnSerializer<T extends SerializablePair<Long,?>>
extends Object
implements GenericColumnSerializer<T>

valid call sequence

open()+serialize()*(getSerializedSize()|writeTo())*

getSerializedSize() / writeTo() effectively function as a close call, but each may be called multiple times and has no effect on one another.

Field Summary

Fields

Modifier and Type	Field	Description
StagedSerde<T>	stagedSerde

Method Summary

Modifier and Type	Method	Description
long	getSerializedSize()	Returns the number of bytes, that this Serializer will write to the output _channel_ (not smoosher) on a Serializer.writeTo(java.nio.channels.WritableByteChannel, org.apache.druid.java.util.common.io.smoosh.FileSmoosher) call.
void	serialize(ColumnValueSelector<? extends T> selector)
void	writeTo(WritableByteChannel channel, FileSmoosher smoosher)	Writes serialized form of this object to the given channel.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.druid.segment.GenericColumnSerializer

open

Field Detail

stagedSerde

public final StagedSerde<T extends SerializablePair<Long,?>> stagedSerde

Method Detail

serialize

public void serialize(ColumnValueSelector<? extends T> selector)
               throws IOException

Specified by:

serialize in interface GenericColumnSerializer<T extends SerializablePair<Long,?>>

Throws:

IOException

getSerializedSize

public long getSerializedSize()
                       throws IOException

Description copied from interface: Serializer

Returns the number of bytes, that this Serializer will write to the output _channel_ (not smoosher) on a Serializer.writeTo(java.nio.channels.WritableByteChannel, org.apache.druid.java.util.common.io.smoosh.FileSmoosher) call.

Specified by:

getSerializedSize in interface Serializer

Throws:

IOException

writeTo

public void writeTo(WritableByteChannel channel,
                    FileSmoosher smoosher)
             throws IOException

Description copied from interface: Serializer

Writes serialized form of this object to the given channel. If parallel data streams are needed, they could be created with the provided smoosher.

Specified by:

writeTo in interface Serializer

Throws:

IOException