com.facebook.presto.spi.block

Class FixedWidthBlockBuilder

java.lang.Object

com.facebook.presto.spi.block.AbstractFixedWidthBlock

com.facebook.presto.spi.block.FixedWidthBlockBuilder

All Implemented Interfaces:

Block, BlockBuilder

public class FixedWidthBlockBuilder
extends AbstractFixedWidthBlock
implements BlockBuilder

Field Summary

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

fixedSize

Constructor Summary

Constructors

Constructor and Description
FixedWidthBlockBuilder(int fixedSize, BlockBuilderStatus blockBuilderStatus, int expectedEntries)
FixedWidthBlockBuilder(int fixedSize, int positionCount)

Method Summary

Modifier and Type	Method and Description
BlockBuilder	appendNull() Appends a null value to the block.
Block	build() Builds the block.
BlockBuilder	closeEntry() Write a byte to the current entry;
Block	copyPositions(List<Integer> positions) Returns a block containing the specified positions.
Block	copyRegion(int positionOffset, int length) Returns a block starting at the specified position and extends for the specified length.
int	getPositionCount() Returns the number of positions in this block.
protected io.airlift.slice.Slice	getRawSlice()
Block	getRegion(int positionOffset, int length) Returns a block starting at the specified position and extends for the specified length.
long	getRetainedSizeInBytes() Returns the retained size of this block in memory.
long	getSizeInBytes() Returns the logical size of this block in memory.
protected boolean	isEntryNull(int position)
BlockBuilder	newBlockBuilderLike(BlockBuilderStatus blockBuilderStatus) Creates a new block builder of the same type based on the current usage statistics of this block builder.
void	retainedBytesForEachPart(java.util.function.BiConsumer<Object,Long> consumer) consumer visits each of the internal data container and accepts the size for it.
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	writeInt(int value) Write a int to the current entry;
BlockBuilder	writeLong(long value) Write a long to the current entry;
BlockBuilder	writeShort(int value) Write a short to the current entry;

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

bytesCompare, bytesEqual, checkReadablePosition, compareTo, equals, getByte, getEncoding, getFixedSize, getInt, getLong, getRegionSizeInBytes, getShort, getSingleValueBlock, getSlice, getSliceLength, 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.BlockBuilder

beginBlockEntry, writeObject

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

assureLoaded, bytesCompare, bytesEqual, compareTo, equals, getByte, getEncoding, getInt, getLong, getObject, getRegionSizeInBytes, getShort, getSingleValueBlock, getSlice, getSliceLength, hash, isNull, writeBytesTo, writePositionTo

Constructor Detail

FixedWidthBlockBuilder

public FixedWidthBlockBuilder(int fixedSize,
                              @Nullable
                              BlockBuilderStatus blockBuilderStatus,
                              int expectedEntries)

FixedWidthBlockBuilder

public FixedWidthBlockBuilder(int fixedSize,
                              int positionCount)

Method Detail

getRawSlice

protected io.airlift.slice.Slice getRawSlice()

Specified by:

getRawSlice in class AbstractFixedWidthBlock

getPositionCount

public int getPositionCount()

Description copied from interface: Block

Returns the number of positions in this block.

Specified by:

getPositionCount in interface Block

getSizeInBytes

public long getSizeInBytes()

Description copied from interface: Block

Returns the logical size of this block in memory.

Specified by:

getSizeInBytes in interface Block

getRetainedSizeInBytes

public long getRetainedSizeInBytes()

Description copied from interface: Block

Returns the retained size of this block in memory. This method is called from the inner most execution loop and must be fast.

Specified by:

getRetainedSizeInBytes in interface Block

retainedBytesForEachPart

public void retainedBytesForEachPart(java.util.function.BiConsumer<Object,Long> consumer)

Description copied from interface: Block

consumer visits each of the internal data container and accepts the size for it. This method can be helpful in cases such as memory counting for internal data structure. Also, the method should be non-recursive, only visit the elements at the top level, and specifically should not call retainedBytesForEachPart on nested blocks consumer should be called at least once with the current block and must include the instance size of the current block

Specified by:

retainedBytesForEachPart in interface Block

copyPositions

public Block copyPositions(List<Integer> positions)

Description copied from interface: Block

Returns a block containing the specified positions. All specified positions must be valid for this block.

The returned block must be a compact representation of the original block.

Specified by:

copyPositions 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

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

closeEntry

public BlockBuilder closeEntry()

Description copied from interface: BlockBuilder

Write a byte to the current entry;

Specified by:

closeEntry 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

isEntryNull

protected boolean isEntryNull(int position)

Specified by:

isEntryNull in class AbstractFixedWidthBlock

getRegion

public Block getRegion(int positionOffset,
                       int length)

Description copied from interface: Block

Returns a block starting at the specified position and extends for the specified length. The specified region must be entirely contained within this block.

The region can be a view over this block. If this block is released the region block may also be released. If the region block is released this block may also be released.

Specified by:

getRegion in interface Block

copyRegion

public Block copyRegion(int positionOffset,
                        int length)

Description copied from interface: Block

Returns a block starting at the specified position and extends for the specified length. The specified region must be entirely contained within this block.

The region returned must be a compact representation of the original block, unless their internal representation will be exactly the same. This method is useful for operators that hold on to a range of values without holding on to the entire block.

Specified by:

copyRegion 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

newBlockBuilderLike

public BlockBuilder newBlockBuilderLike(BlockBuilderStatus blockBuilderStatus)

Description copied from interface: BlockBuilder

Creates a new block builder of the same type based on the current usage statistics of this block builder.

Specified by:

newBlockBuilderLike in interface BlockBuilder

toString

public String toString()

Overrides:

toString in class Object