com.facebook.presto.spi.block

Class LazySliceArrayBlock

java.lang.Object

com.facebook.presto.spi.block.AbstractVariableWidthBlock

com.facebook.presto.spi.block.LazySliceArrayBlock

All Implemented Interfaces:

Block

public class LazySliceArrayBlock
extends AbstractVariableWidthBlock

Constructor Summary

Constructors

Constructor and Description
LazySliceArrayBlock(int positionCount, LazyBlockLoader<LazySliceArrayBlock> loader)

Method Summary

Methods

Modifier and Type	Method and Description
void	assureLoaded() Assures that all data for the block is in memory.
BlockEncoding	getEncoding() Get the encoding for this block.
int	getLength(int position) Gets the length of the value at the position.
int	getPositionCount() Returns the number of positions in this block.
protected int	getPositionOffset(int position)
protected io.airlift.slice.Slice	getRawSlice(int position)
Block	getRegion(int positionOffset, int length) Returns a block starting at the specified position and extends for the specified length.
int	getSizeInBytes() Returns the size of this block in memory.
protected boolean	isEntryNull(int position)
void	setValues(io.airlift.slice.Slice[] values)
String	toString()

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

bytesCompare, bytesEqual, compareTo, equals, getByte, getDouble, getFloat, getInt, getLong, getShort, getSingleValueBlock, getSlice, hash, isNull, writeBytesTo

Methods inherited from class java.lang.Object

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

Constructor Detail

LazySliceArrayBlock

public LazySliceArrayBlock(int positionCount,
                   LazyBlockLoader<LazySliceArrayBlock> loader)

Method Detail

setValues

public void setValues(io.airlift.slice.Slice[] values)

getEncoding

public BlockEncoding getEncoding()

Description copied from interface: Block

Get the encoding for this block.

Specified by:

getEncoding in interface Block

Overrides:

getEncoding in class AbstractVariableWidthBlock

getRawSlice

protected io.airlift.slice.Slice getRawSlice(int position)

Specified by:

getRawSlice in class AbstractVariableWidthBlock

getPositionOffset

protected int getPositionOffset(int position)

Specified by:

getPositionOffset in class AbstractVariableWidthBlock

isEntryNull

protected boolean isEntryNull(int position)

Specified by:

isEntryNull in class AbstractVariableWidthBlock

getPositionCount

public int getPositionCount()

Description copied from interface: Block

Returns the number of positions in this block.

getLength

public int getLength(int position)

Description copied from interface: Block

Gets the length of the value at the position.

getSizeInBytes

public int getSizeInBytes()

Description copied from interface: Block

Returns the size of this block in memory.

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.

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.

Specified by:

assureLoaded in interface Block

Overrides:

assureLoaded in class AbstractVariableWidthBlock

toString

public String toString()

Overrides:

toString in class Object