com.facebook.presto.rcfile.text

Class BlockEncoding

java.lang.Object

com.facebook.presto.rcfile.text.BlockEncoding

All Implemented Interfaces:

ColumnEncoding, TextColumnEncoding

Direct Known Subclasses:

ListEncoding, MapEncoding, StructEncoding

public abstract class BlockEncoding
extends Object
implements TextColumnEncoding

Field Summary

Fields

Modifier and Type	Field and Description
protected io.airlift.slice.Slice	nullSequence

Constructor Summary

Constructors

Constructor and Description
BlockEncoding(Type type, io.airlift.slice.Slice nullSequence, byte[] separators, Byte escapeByte)

Method Summary

Modifier and Type	Method and Description
Block	decodeColumn(ColumnData columnData)
void	encodeColumn(Block block, io.airlift.slice.SliceOutput output, EncodeOutput encodeOutput)
protected byte	getSeparator(int depth)
protected boolean	isEscapeByte(byte currentByte)
protected boolean	isNullSequence(io.airlift.slice.Slice slice, int offset, int length)

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.facebook.presto.rcfile.text.TextColumnEncoding

decodeValueInto, encodeValueInto

Field Detail

nullSequence

protected final io.airlift.slice.Slice nullSequence

Constructor Detail

BlockEncoding

public BlockEncoding(Type type,
                     io.airlift.slice.Slice nullSequence,
                     byte[] separators,
                     Byte escapeByte)

Method Detail

encodeColumn

public final void encodeColumn(Block block,
                               io.airlift.slice.SliceOutput output,
                               EncodeOutput encodeOutput)
                        throws RcFileCorruptionException

Specified by:

encodeColumn in interface ColumnEncoding

Throws:

RcFileCorruptionException

decodeColumn

public final Block decodeColumn(ColumnData columnData)
                         throws RcFileCorruptionException

Specified by:

decodeColumn in interface ColumnEncoding

Throws:

RcFileCorruptionException

isNullSequence

protected final boolean isNullSequence(io.airlift.slice.Slice slice,
                                       int offset,
                                       int length)

isEscapeByte

protected final boolean isEscapeByte(byte currentByte)

getSeparator

protected final byte getSeparator(int depth)