com.facebook.presto.spi.block

Class VariableWidthBlock

java.lang.Object

com.facebook.presto.spi.block.AbstractVariableWidthBlock

com.facebook.presto.spi.block.VariableWidthBlock

All Implemented Interfaces:

Block

public class VariableWidthBlock
extends AbstractVariableWidthBlock

Constructor Summary

Constructors

Constructor and Description
VariableWidthBlock(int positionCount, io.airlift.slice.Slice slice, int[] offsets, boolean[] valueIsNull)

Method Summary

Modifier and Type	Method and Description
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)
String	toString()

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

assureLoaded, bytesCompare, bytesEqual, compareTo, equals, getByte, getDouble, getEncoding, 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

VariableWidthBlock

public VariableWidthBlock(int positionCount,
                          io.airlift.slice.Slice slice,
                          int[] offsets,
                          boolean[] valueIsNull)

Method Detail

getPositionOffset

protected final int getPositionOffset(int position)

Specified by:

getPositionOffset in class AbstractVariableWidthBlock

getLength

public int getLength(int position)

Description copied from interface: Block

Gets the length of the value at the position.

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.

getSizeInBytes

public int getSizeInBytes()

Description copied from interface: Block

Returns the size of this block in memory.

getRawSlice

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

Specified by:

getRawSlice in class AbstractVariableWidthBlock

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.

toString

public String toString()

Overrides:

toString in class Object