com.facebook.presto.spi.block

Class ArrayElementBlockWriter

java.lang.Object

com.facebook.presto.spi.block.AbstractArrayElementBlock

com.facebook.presto.spi.block.ArrayElementBlockWriter

All Implemented Interfaces:

Block, BlockBuilder

public class ArrayElementBlockWriter
extends AbstractArrayElementBlock
implements BlockBuilder

Field Summary

Fields inherited from class com.facebook.presto.spi.block.AbstractArrayElementBlock

start

Constructor Summary

Constructors

Constructor and Description
ArrayElementBlockWriter(BlockBuilder blockBuilder, int start)

Method Summary

Modifier and Type	Method and Description
BlockBuilder	appendNull() Appends a null value to the block.
BlockBuilder	beginBlockEntry() Return a writer to the current entry.
Block	build() Builds the block.
BlockBuilder	closeEntry() Write a byte to the current entry;
protected BlockBuilder	getBlock()
int	getPositionCount() Returns the number of positions in this block.
int	getRetainedSizeInBytes() Returns the retained size of this block in memory.
int	getSizeInBytes() Returns the logical size of this block in memory.
String	toString()
BlockBuilder	writeByte(int value) Write a byte to the current entry;
BlockBuilder	writeBytes(io.airlift.slice.Slice source, int sourceIndex, int length) Write a byte sequences to the current entry;
BlockBuilder	writeDouble(double value) Write a double to the current entry;
BlockBuilder	writeFloat(float value) Write a float to the current entry;
BlockBuilder	writeInt(int value) Write a int to the current entry;
BlockBuilder	writeLong(long value) Write a long to the current entry;
BlockBuilder	writeObject(Object value) Write an object to the current entry;
BlockBuilder	writeShort(int value) Write a short to the current entry;

Methods inherited from class com.facebook.presto.spi.block.AbstractArrayElementBlock

assureLoaded, bytesCompare, bytesEqual, compareTo, copyPositions, copyRegion, equals, getByte, getDouble, getEncoding, getFloat, getInt, getLength, getLong, getObject, getRegion, getShort, getSingleValueBlock, getSlice, hash, isNull, writeBytesTo, writePositionTo

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.facebook.presto.spi.block.Block

assureLoaded, bytesCompare, bytesEqual, compareTo, copyPositions, copyRegion, equals, getByte, getDouble, getEncoding, getFloat, getInt, getLength, getLong, getObject, getRegion, getShort, getSingleValueBlock, getSlice, hash, isNull, writeBytesTo, writePositionTo

Constructor Detail

ArrayElementBlockWriter

public ArrayElementBlockWriter(BlockBuilder blockBuilder,
                               int start)

Method Detail

getBlock

protected BlockBuilder getBlock()

Specified by:

getBlock in class AbstractArrayElementBlock

getSizeInBytes

public int getSizeInBytes()

Description copied from interface: Block

Returns the logical size of this block in memory.

Specified by:

getSizeInBytes in interface Block

getRetainedSizeInBytes

public int getRetainedSizeInBytes()

Description copied from interface: Block

Returns the retained size of this block in memory.

Specified by:

getRetainedSizeInBytes in interface Block

writeByte

public BlockBuilder writeByte(int value)

Description copied from interface: BlockBuilder

Write a byte to the current entry;

Specified by:

writeByte in interface BlockBuilder

writeShort

public BlockBuilder writeShort(int value)

Description copied from interface: BlockBuilder

Write a short to the current entry;

Specified by:

writeShort in interface BlockBuilder

writeInt

public BlockBuilder writeInt(int value)

Description copied from interface: BlockBuilder

Write a int to the current entry;

Specified by:

writeInt in interface BlockBuilder

writeLong

public BlockBuilder writeLong(long value)

Description copied from interface: BlockBuilder

Write a long to the current entry;

Specified by:

writeLong in interface BlockBuilder

writeFloat

public BlockBuilder writeFloat(float value)

Description copied from interface: BlockBuilder

Write a float to the current entry;

Specified by:

writeFloat in interface BlockBuilder

writeDouble

public BlockBuilder writeDouble(double value)

Description copied from interface: BlockBuilder

Write a double to the current entry;

Specified by:

writeDouble in interface BlockBuilder

writeBytes

public BlockBuilder writeBytes(io.airlift.slice.Slice source,
                               int sourceIndex,
                               int length)

Description copied from interface: BlockBuilder

Write a byte sequences to the current entry;

Specified by:

writeBytes in interface BlockBuilder

writeObject

public BlockBuilder writeObject(Object value)

Description copied from interface: BlockBuilder

Write an object to the current entry;

Specified by:

writeObject in interface BlockBuilder

beginBlockEntry

public BlockBuilder beginBlockEntry()

Description copied from interface: BlockBuilder

Return a writer to the current entry. The caller can operate on the returned caller to incrementally build the object. This is generally more efficient than building the object elsewhere and call writeObject afterwards because a large chunk of memory could potentially be unnecessarily copied in this process.

Specified by:

beginBlockEntry in interface BlockBuilder

appendNull

public BlockBuilder appendNull()

Description copied from interface: BlockBuilder

Appends a null value to the block.

Specified by:

appendNull in interface BlockBuilder

closeEntry

public BlockBuilder closeEntry()

Description copied from interface: BlockBuilder

Write a byte to the current entry;

Specified by:

closeEntry in interface BlockBuilder

getPositionCount

public int getPositionCount()

Description copied from interface: Block

Returns the number of positions in this block.

Specified by:

getPositionCount in interface Block

build

public Block build()

Description copied from interface: BlockBuilder

Builds the block. This method can be called multiple times.

Specified by:

build in interface BlockBuilder

toString

public String toString()

Overrides:

toString in class Object