org.apache.paimon.data

Class BinarySection

java.lang.Object

org.apache.paimon.data.BinarySection

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

BinaryArray, BinaryMap, BinaryRow, BinaryString, NestedRow

public abstract class BinarySection
extends Object
implements Serializable

Describe a section of memory.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static long	HIGHEST_FIRST_BIT To get the mark in highest bit of long.
static long	HIGHEST_SECOND_TO_EIGHTH_BIT To get the 7 bits length in second bit to eighth bit out of a long.
static int	MAX_FIX_PART_DATA_SIZE It decides whether to put data in FixLenPart or VarLenPart.
protected int	offset
protected MemorySegment[]	segments
protected int	sizeInBytes

Constructor Summary

Constructors

Constructor and Description
BinarySection()
BinarySection(MemorySegment[] segments, int offset, int sizeInBytes)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
int	getOffset()
MemorySegment[]	getSegments()
int	getSizeInBytes()
int	hashCode()
void	pointTo(MemorySegment[] segments, int offset, int sizeInBytes)
void	pointTo(MemorySegment segment, int offset, int sizeInBytes)
byte[]	toBytes()

Methods inherited from class java.lang.Object

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

Field Detail

MAX_FIX_PART_DATA_SIZE

public static final int MAX_FIX_PART_DATA_SIZE

It decides whether to put data in FixLenPart or VarLenPart. See more in BinaryRow.

If len is less than 8, its binary format is: 1-bit mark(1) = 1, 7-bits len, and 7-bytes data. Data is stored in fix-length part.

If len is greater or equal to 8, its binary format is: 1-bit mark(1) = 0, 31-bits offset to the data, and 4-bytes length of data. Data is stored in variable-length part.

See Also:

Constant Field Values

HIGHEST_FIRST_BIT

public static final long HIGHEST_FIRST_BIT

To get the mark in highest bit of long. Form: 10000000 00000000 ... (8 bytes)

This is used to decide whether the data is stored in fixed-length part or variable-length part. see MAX_FIX_PART_DATA_SIZE for more information.

See Also:

Constant Field Values

HIGHEST_SECOND_TO_EIGHTH_BIT

public static final long HIGHEST_SECOND_TO_EIGHTH_BIT

To get the 7 bits length in second bit to eighth bit out of a long. Form: 01111111 00000000 ... (8 bytes)

This is used to get the length of the data which is stored in this long. see MAX_FIX_PART_DATA_SIZE for more information.

See Also:

Constant Field Values

segments

protected transient MemorySegment[] segments

offset

protected transient int offset

sizeInBytes

protected transient int sizeInBytes

Constructor Detail

BinarySection

public BinarySection()

BinarySection

public BinarySection(MemorySegment[] segments,
                     int offset,
                     int sizeInBytes)

Method Detail

pointTo

public final void pointTo(MemorySegment segment,
                          int offset,
                          int sizeInBytes)

pointTo

public void pointTo(MemorySegment[] segments,
                    int offset,
                    int sizeInBytes)

getSegments

public MemorySegment[] getSegments()

getOffset

public int getOffset()

getSizeInBytes

public int getSizeInBytes()

toBytes

public byte[] toBytes()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object