com.facebook.presto.spi.block

Class LazyArrayBlock

java.lang.Object

com.facebook.presto.spi.block.AbstractArrayBlock

com.facebook.presto.spi.block.LazyArrayBlock

All Implemented Interfaces:

Block

public class LazyArrayBlock
extends AbstractArrayBlock

Constructor Summary

Constructors

Constructor and Description
LazyArrayBlock(LazyBlockLoader<LazyArrayBlock> loader)

Method Summary

Modifier and Type	Method and Description
void	assureLoaded() Assures that all data for the block is in memory.
void	copyFromBlock(Block block)
protected int	getOffsetBase()
protected io.airlift.slice.Slice	getOffsets()
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.
protected io.airlift.slice.Slice	getValueIsNull()
protected Block	getValues()
String	toString()

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

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

Constructor Detail

LazyArrayBlock

public LazyArrayBlock(LazyBlockLoader<LazyArrayBlock> loader)

Method Detail

getPositionCount

public int getPositionCount()

Description copied from interface: Block

Returns the number of positions in this block.

getValues

protected Block getValues()

Specified by:

getValues in class AbstractArrayBlock

getOffsets

protected io.airlift.slice.Slice getOffsets()

Specified by:

getOffsets in class AbstractArrayBlock

getOffsetBase

protected int getOffsetBase()

Specified by:

getOffsetBase in class AbstractArrayBlock

getValueIsNull

protected io.airlift.slice.Slice getValueIsNull()

Specified by:

getValueIsNull in class AbstractArrayBlock

assureLoaded

public void assureLoaded()

Description copied from interface: Block

Assures that all data for the block is in memory.

This allows streaming data sources to skip sections that are not accessed in a query.

copyFromBlock

public void copyFromBlock(Block block)

toString

public String toString()

Overrides:

toString in class Object

getSizeInBytes

public int getSizeInBytes()

Description copied from interface: Block

Returns the logical size of this block in memory.

getRetainedSizeInBytes

public int getRetainedSizeInBytes()

Description copied from interface: Block

Returns the retained size of this block in memory.