Package io.trino.operator

Class VariableWidthData

java.lang.Object

io.trino.operator.VariableWidthData

public final class VariableWidthData
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final byte[]	EMPTY_CHUNK
static final int	MAX_CHUNK_SIZE
static final int	MIN_CHUNK_SIZE
static final int	POINTER_SIZE

Constructor Summary

Constructors

Constructor	Description
VariableWidthData()
VariableWidthData(VariableWidthData variableWidthData)
VariableWidthData(List<byte[]> chunks, int openChunkOffset)

Method Summary

Modifier and Type	Method	Description
byte[]	allocate(byte[] pointer, int pointerOffset, int size)
void	free(byte[] pointer, int pointerOffset)
List<byte[]>	getAllChunks()
long	getAllocatedBytes()
byte[]	getChunk(byte[] pointer, int pointerOffset)
static int	getChunkOffset(byte[] pointer, int pointerOffset)
long	getFreeBytes()
long	getRetainedSizeBytes()
static int	getValueLength(byte[] pointer, int pointerOffset)
static void	writePointer(byte[] pointer, int pointerOffset, int chunkIndex, int chunkOffset, int valueLength)

Methods inherited from class java.lang.Object

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

Field Details

MIN_CHUNK_SIZE

public static final int MIN_CHUNK_SIZE

See Also:

• Constant Field Values

MAX_CHUNK_SIZE

public static final int MAX_CHUNK_SIZE

See Also:

• Constant Field Values

POINTER_SIZE

public static final int POINTER_SIZE

See Also:

• Constant Field Values

EMPTY_CHUNK

public static final byte[] EMPTY_CHUNK

Constructor Details

VariableWidthData

public VariableWidthData()

VariableWidthData

public VariableWidthData(VariableWidthData variableWidthData)

VariableWidthData

public VariableWidthData(List<byte[]> chunks,
 int openChunkOffset)

Method Details

getRetainedSizeBytes

public long getRetainedSizeBytes()

getAllChunks

public List<byte[]> getAllChunks()

getAllocatedBytes

public long getAllocatedBytes()

getFreeBytes

public long getFreeBytes()

allocate

public byte[] allocate(byte[] pointer,
 int pointerOffset,
 int size)

free

public void free(byte[] pointer,
 int pointerOffset)

getChunk

public byte[] getChunk(byte[] pointer,
 int pointerOffset)

getChunkOffset

public static int getChunkOffset(byte[] pointer,
 int pointerOffset)

getValueLength

public static int getValueLength(byte[] pointer,
 int pointerOffset)

writePointer

public static void writePointer(byte[] pointer,
 int pointerOffset,
 int chunkIndex,
 int chunkOffset,
 int valueLength)