com.facebook.presto.common.block

Interface BlockEncoding

All Known Implementing Classes:

ArrayBlockEncoding, ByteArrayBlockEncoding, DictionaryBlockEncoding, Int128ArrayBlockEncoding, IntArrayBlockEncoding, LazyBlockEncoding, LongArrayBlockEncoding, MapBlockEncoding, RowBlockEncoding, RunLengthBlockEncoding, ShortArrayBlockEncoding, SingleMapBlockEncoding, SingleRowBlockEncoding, VariableWidthBlockEncoding

public interface BlockEncoding

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.
default 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

Method Detail

getName

String getName()

Gets the unique name of this encoding.

readBlock

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

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

writeBlock

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

Write the specified block to the specified output

replacementBlockForWrite

default Optional<Block> replacementBlockForWrite(Block block)

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