com.facebook.presto.spi.block

Class RunLengthBlockEncoding

java.lang.Object

com.facebook.presto.spi.block.RunLengthBlockEncoding

All Implemented Interfaces:

BlockEncoding

public class RunLengthBlockEncoding
extends Object
implements BlockEncoding

Field Summary

Fields

Modifier and Type	Field and Description
static BlockEncodingFactory<RunLengthBlockEncoding>	FACTORY

Constructor Summary

Constructors

Constructor and Description
RunLengthBlockEncoding(BlockEncoding valueBlockEncoding)

Method Summary

Modifier and Type	Method and Description
int	getEstimatedSize(Block block) Estimated serialized block size
BlockEncodingFactory	getFactory() Return associated factory
String	getName() Gets the unique name of this encoding.
BlockEncoding	getValueBlockEncoding()
RunLengthEncodedBlock	readBlock(io.airlift.slice.SliceInput sliceInput) Read a block from the specified input.
void	writeBlock(io.airlift.slice.SliceOutput sliceOutput, Block block) Write the specified block to the specified output

Methods inherited from class java.lang.Object

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

Field Detail

FACTORY

public static final BlockEncodingFactory<RunLengthBlockEncoding> FACTORY

Constructor Detail

RunLengthBlockEncoding

public RunLengthBlockEncoding(BlockEncoding valueBlockEncoding)

Method Detail

getName

public String getName()

Description copied from interface: BlockEncoding

Gets the unique name of this encoding.

Specified by:

getName in interface BlockEncoding

getValueBlockEncoding

public BlockEncoding getValueBlockEncoding()

writeBlock

public void writeBlock(io.airlift.slice.SliceOutput sliceOutput,
                       Block block)

Description copied from interface: BlockEncoding

Write the specified block to the specified output

Specified by:

writeBlock in interface BlockEncoding

getEstimatedSize

public int getEstimatedSize(Block block)

Description copied from interface: BlockEncoding

Estimated serialized block size

Specified by:

getEstimatedSize in interface BlockEncoding

readBlock

public RunLengthEncodedBlock readBlock(io.airlift.slice.SliceInput sliceInput)

Description copied from interface: BlockEncoding

Read a block from the specified input. The returned block should begin at the specified position.

Specified by:

readBlock in interface BlockEncoding

getFactory

public BlockEncodingFactory getFactory()

Description copied from interface: BlockEncoding

Return associated factory

Specified by:

getFactory in interface BlockEncoding