com.facebook.presto.common.block

Class LazyBlockEncoding

java.lang.Object

com.facebook.presto.common.block.LazyBlockEncoding

All Implemented Interfaces:

BlockEncoding

public class LazyBlockEncoding
extends Object
implements BlockEncoding

Field Summary

Fields

Modifier and Type	Field and Description
static String	NAME

Constructor Summary

Constructors

Constructor and Description
LazyBlockEncoding()

Method Summary

Modifier and Type	Method and Description
String	getName() Gets the unique name of this encoding.
Block	readBlock(BlockEncodingSerde blockEncodingSerde, io.airlift.slice.SliceInput input) Read a block from the specified input.
Optional<Block>	replacementBlockForWrite(Block block) This method allows the implementor to specify a replacement object that will be serialized instead of the original one.
void	writeBlock(BlockEncodingSerde blockEncodingSerde, 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

NAME

public static final String NAME

See Also:

Constant Field Values

Constructor Detail

LazyBlockEncoding

public LazyBlockEncoding()

Method Detail

getName

public String getName()

Description copied from interface: BlockEncoding

Gets the unique name of this encoding.

Specified by:

getName in interface BlockEncoding

readBlock

public Block readBlock(BlockEncodingSerde blockEncodingSerde,
                       io.airlift.slice.SliceInput input)

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

writeBlock

public void writeBlock(BlockEncodingSerde blockEncodingSerde,
                       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

replacementBlockForWrite

public Optional<Block> replacementBlockForWrite(Block block)

Description copied from interface: BlockEncoding

This method allows the implementor to specify a replacement object that will be serialized instead of the original one.

Specified by:

replacementBlockForWrite in interface BlockEncoding