Package org.apache.druid.query.aggregation

Class SerializablePairLongStringBufferStore

java.lang.Object

org.apache.druid.query.aggregation.SerializablePairLongStringBufferStore

public class SerializablePairLongStringBufferStore
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	SerializablePairLongStringBufferStore.TransferredBuffer	contains serialized data that is compressed and delta-encoded (Long) It's ready to be transferred to a WritableByteChannel

Constructor Summary

Constructors

Constructor	Description
SerializablePairLongStringBufferStore(SerializedStorage<SerializablePairLongString> serializedStorage)

Method Summary

Modifier and Type	Method	Description
SerializablePairLongStringColumnHeader	createColumnHeader()
IOIterator<SerializablePairLongString>	iterator()
void	store(SerializablePairLongString pairLongString)
SerializablePairLongStringBufferStore.TransferredBuffer	transferToRowWriter(ByteBufferProvider byteBufferProvider, SegmentWriteOutMedium segmentWriteOutMedium)	each call transfers the temporary buffer into an encoded, block-compessed buffer of the segment.

Methods inherited from class java.lang.Object

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

Constructor Detail

SerializablePairLongStringBufferStore

public SerializablePairLongStringBufferStore(SerializedStorage<SerializablePairLongString> serializedStorage)

Method Detail

store

public void store(@Nullable
                  SerializablePairLongString pairLongString)
           throws IOException

Throws:

IOException

transferToRowWriter

public SerializablePairLongStringBufferStore.TransferredBuffer transferToRowWriter(ByteBufferProvider byteBufferProvider,
                                                                                   SegmentWriteOutMedium segmentWriteOutMedium)
                                                                            throws IOException

each call transfers the temporary buffer into an encoded, block-compessed buffer of the segment. It is ready to be transferred to a WritableByteChannel

Parameters:

byteBufferProvider - - provides a ByteBuffer used for block compressed encoding

segmentWriteOutMedium - - used to create temporary storage

Returns:

encoded buffer ready to be stored

Throws:

IOException

createColumnHeader

@Nonnull
public SerializablePairLongStringColumnHeader createColumnHeader()

iterator

public IOIterator<SerializablePairLongString> iterator()
                                                throws IOException

Throws:

IOException