org.apache.flink.table.dataformat

Class AbstractBinaryWriter

java.lang.Object

org.apache.flink.table.dataformat.AbstractBinaryWriter

All Implemented Interfaces:

BinaryWriter

Direct Known Subclasses:

BinaryArrayWriter, BinaryRowWriter

public abstract class AbstractBinaryWriter
extends Object
implements BinaryWriter

Use the special format to write data to a MemorySegment (its capacity grows automatically).

If write a format binary: 1. New a writer. 2. Write each field by writeXX or setNullAt. (Variable length fields can not be written repeatedly.) 3. Invoke BinaryWriter.complete().

If want to reuse this writer, please invoke BinaryWriter.reset() first.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	cursor
protected org.apache.flink.core.memory.DataOutputViewStreamWrapper	outputView
protected org.apache.flink.core.memory.MemorySegment	segment

Constructor Summary

Constructors

Constructor and Description
AbstractBinaryWriter()

Method Summary

Modifier and Type	Method and Description
protected abstract void	afterGrow() After grow, need point to new memory.
protected void	ensureCapacity(int neededSize)
protected abstract int	getFieldOffset(int pos) Get field offset.
protected static int	roundNumberOfBytesToNearestWord(int numBytes)
protected abstract void	setNullBit(int ordinal)
protected abstract void	setOffsetAndSize(int pos, int offset, long size) Set offset and size to fix len part.
void	writeArray(int pos, BaseArray input, BaseArraySerializer serializer)
void	writeBinary(int pos, byte[] bytes)
void	writeDecimal(int pos, Decimal value, int precision)
void	writeGeneric(int pos, BinaryGeneric input, BinaryGenericSerializer serializer)
void	writeMap(int pos, BaseMap input, BaseMapSerializer serializer)
void	writeRow(int pos, BaseRow input, BaseRowSerializer serializer)
void	writeString(int pos, BinaryString input) See BinaryFormat.readBinaryStringFieldFromSegments(org.apache.flink.core.memory.MemorySegment[], int, int, long).
protected void	zeroOutPaddingBytes(int numBytes)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.table.dataformat.BinaryWriter

complete, reset, setNullAt, write, writeBoolean, writeByte, writeDouble, writeFloat, writeInt, writeLong, writeShort

Field Detail

segment

protected org.apache.flink.core.memory.MemorySegment segment

cursor

protected int cursor

outputView

protected org.apache.flink.core.memory.DataOutputViewStreamWrapper outputView

Constructor Detail

AbstractBinaryWriter

public AbstractBinaryWriter()

Method Detail

setOffsetAndSize

protected abstract void setOffsetAndSize(int pos,
                                         int offset,
                                         long size)

Set offset and size to fix len part.

getFieldOffset

protected abstract int getFieldOffset(int pos)

Get field offset.

afterGrow

protected abstract void afterGrow()

After grow, need point to new memory.

setNullBit

protected abstract void setNullBit(int ordinal)

writeString

public void writeString(int pos,
                        BinaryString input)

See BinaryFormat.readBinaryStringFieldFromSegments(org.apache.flink.core.memory.MemorySegment[], int, int, long).

Specified by:

writeString in interface BinaryWriter

writeArray

public void writeArray(int pos,
                       BaseArray input,
                       BaseArraySerializer serializer)

Specified by:

writeArray in interface BinaryWriter

writeMap

public void writeMap(int pos,
                     BaseMap input,
                     BaseMapSerializer serializer)

Specified by:

writeMap in interface BinaryWriter

writeGeneric

public void writeGeneric(int pos,
                         BinaryGeneric input,
                         BinaryGenericSerializer serializer)

Specified by:

writeGeneric in interface BinaryWriter

writeRow

public void writeRow(int pos,
                     BaseRow input,
                     BaseRowSerializer serializer)

Specified by:

writeRow in interface BinaryWriter

writeBinary

public void writeBinary(int pos,
                        byte[] bytes)

Specified by:

writeBinary in interface BinaryWriter

writeDecimal

public void writeDecimal(int pos,
                         Decimal value,
                         int precision)

Specified by:

writeDecimal in interface BinaryWriter

zeroOutPaddingBytes

protected void zeroOutPaddingBytes(int numBytes)

ensureCapacity

protected void ensureCapacity(int neededSize)

roundNumberOfBytesToNearestWord

protected static int roundNumberOfBytesToNearestWord(int numBytes)