com.facebook.presto.common.block

Class AbstractSingleArrayBlock

java.lang.Object

com.facebook.presto.common.block.AbstractSingleArrayBlock

All Implemented Interfaces:

Block, UncheckedBlock

Direct Known Subclasses:

SingleArrayBlockWriter

public abstract class AbstractSingleArrayBlock
extends Object
implements Block

Field Summary

Fields

Modifier and Type	Field and Description
protected int	start

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractSingleArrayBlock(int start)

Method Summary

Modifier and Type	Method and Description
int	bytesCompare(int position, int offset, int length, io.airlift.slice.Slice otherSlice, int otherOffset, int otherLength) Compares the byte sequences at offset in the value at position to the byte sequence at otherOffset in otherSlice.
boolean	bytesEqual(int position, int offset, io.airlift.slice.Slice otherSlice, int otherOffset, int length) Is the byte sequences at offset in the value at position equal to the byte sequence at otherOffset in otherSlice.
int	compareTo(int leftPosition, int leftOffset, int leftLength, Block rightBlock, int rightPosition, int rightOffset, int rightLength) Compares the byte sequences at offset in the value at position to the byte sequence at otherOffset in the value at otherPosition in otherBlock.
Block	copyPositions(int[] positions, int offset, int length) Returns a block containing the specified positions.
Block	copyRegion(int position, int length) Returns a block starting at the specified position and extends for the specified length.
boolean	equals(int position, int offset, Block otherBlock, int otherPosition, int otherOffset, int length) Is the byte sequences at offset in the value at position equal to the byte sequence at otherOffset in the value at otherPosition in otherBlock.
protected abstract Block	getBlock()
Block	getBlock(int position) Gets a block in the value at position.
Block	getBlockUnchecked(int internalPosition) Gets a Block value at internalPosition - getOffsetBase().
byte	getByte(int position) Gets a byte in the value at position.
byte	getByteUnchecked(int internalPosition) Gets a byte value at internalPosition - getOffsetBase().
String	getEncodingName() Get the encoding for this block.
long	getEstimatedDataSizeForStats(int position) Returns the estimated in memory data size for stats of position.
int	getInt(int position) Gets a little endian int in the value at position.
int	getIntUnchecked(int internalPosition) Gets a little endian int value at internalPosition - getOffsetBase().
long	getLong(int position) Gets a little endian long in the value at position.
long	getLong(int position, int offset) Gets a little endian long at offset in the value at position.
long	getLongUnchecked(int internalPosition) Gets a little endian long value at internalPosition - getOffsetBase().
long	getLongUnchecked(int internalPosition, int offset) Gets a little endian long at offset in the value at internalPosition - getOffsetBase().
int	getOffsetBase()
long	getPositionsSizeInBytes(boolean[] positions, int usedPositionCount) Returns the size of all positions marked true in the positions array.
Block	getRegion(int position, int length) Returns a block starting at the specified position and extends for the specified length.
long	getRegionSizeInBytes(int position, int length) Returns the size of block.getRegion(position, length).
short	getShort(int position) Gets a little endian short at in the value at position.
short	getShortUnchecked(int internalPosition) Gets a little endian short at value at internalPosition - getOffsetBase().
Block	getSingleValueBlock(int position) Gets the value at the specified position as a single element block.
io.airlift.slice.Slice	getSlice(int position, int offset, int length) Gets a slice at offset in the value at position.
int	getSliceLength(int position) Gets the length of the value at the position.
int	getSliceLengthUnchecked(int internalPosition) Gets the length of the slice value at internalPosition - getOffsetBase().
io.airlift.slice.Slice	getSliceUnchecked(int internalPosition, int offset, int length) Gets a slice with offset offset at internalPosition - getOffsetBase().
long	hash(int position, int offset, int length) Calculates the hash code the byte sequences at offset in the value at position.
boolean	isNull(int position) Is the specified position null?
boolean	isNullUnchecked(int internalPosition)
void	writeBytesTo(int position, int offset, int length, BlockBuilder blockBuilder) Appends the byte sequences at offset in the value at position to blockBuilder.
void	writeBytesTo(int position, int offset, int length, io.airlift.slice.SliceOutput sliceOutput) Appends the byte sequences at offset in the value at position to sliceOutput.
void	writePositionTo(int position, BlockBuilder blockBuilder) Appends the value at position to blockBuilder and close the entry.
void	writePositionTo(int position, io.airlift.slice.SliceOutput output) Appends the value at position to output.

Methods inherited from class java.lang.Object

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

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

appendNull, fixedSizeInBytesPerPosition, getApproximateRegionLogicalSizeInBytes, getLoadedBlock, getLogicalSizeInBytes, getPositionCount, getPositions, getRegionLogicalSizeInBytes, getRetainedSizeInBytes, getSizeInBytes, mayHaveNull, retainedBytesForEachPart

Field Detail

start

protected final int start

Constructor Detail

AbstractSingleArrayBlock

protected AbstractSingleArrayBlock(int start)

Method Detail

getBlock

protected abstract Block getBlock()

getSliceLength

public int getSliceLength(int position)

Description copied from interface: Block

Gets the length of the value at the position. This method must be implemented if @{code getSlice} is implemented.

Specified by:

getSliceLength in interface Block

getByte

public byte getByte(int position)

Description copied from interface: Block

Gets a byte in the value at position.

Specified by:

getByte in interface Block

getShort

public short getShort(int position)

Description copied from interface: Block

Gets a little endian short at in the value at position.

Specified by:

getShort in interface Block

getInt

public int getInt(int position)

Description copied from interface: Block

Gets a little endian int in the value at position.

Specified by:

getInt in interface Block

getLong

public long getLong(int position)

Description copied from interface: Block

Gets a little endian long in the value at position.

Specified by:

getLong in interface Block

getLong

public long getLong(int position,
                    int offset)

Description copied from interface: Block

Gets a little endian long at offset in the value at position.

Specified by:

getLong in interface Block

getSlice

public io.airlift.slice.Slice getSlice(int position,
                                       int offset,
                                       int length)

Description copied from interface: Block

Gets a slice at offset in the value at position.

Specified by:

getSlice in interface Block

getBlock

public Block getBlock(int position)

Description copied from interface: Block

Gets a block in the value at position.

Specified by:

getBlock in interface Block

Returns:

bytesEqual

public boolean bytesEqual(int position,
                          int offset,
                          io.airlift.slice.Slice otherSlice,
                          int otherOffset,
                          int length)

Description copied from interface: Block

Is the byte sequences at offset in the value at position equal to the byte sequence at otherOffset in otherSlice. This method must be implemented if @{code getSlice} is implemented.

Specified by:

bytesEqual in interface Block

bytesCompare

public int bytesCompare(int position,
                        int offset,
                        int length,
                        io.airlift.slice.Slice otherSlice,
                        int otherOffset,
                        int otherLength)

Description copied from interface: Block

Compares the byte sequences at offset in the value at position to the byte sequence at otherOffset in otherSlice. This method must be implemented if @{code getSlice} is implemented.

Specified by:

bytesCompare in interface Block

writeBytesTo

public void writeBytesTo(int position,
                         int offset,
                         int length,
                         BlockBuilder blockBuilder)

Description copied from interface: Block

Appends the byte sequences at offset in the value at position to blockBuilder. This method must be implemented if @{code getSlice} is implemented.

Specified by:

writeBytesTo in interface Block

writeBytesTo

public void writeBytesTo(int position,
                         int offset,
                         int length,
                         io.airlift.slice.SliceOutput sliceOutput)

Description copied from interface: Block

Appends the byte sequences at offset in the value at position to sliceOutput. This method must be implemented if @{code getSlice} is implemented.

Specified by:

writeBytesTo in interface Block

writePositionTo

public void writePositionTo(int position,
                            BlockBuilder blockBuilder)

Description copied from interface: Block

Appends the value at position to blockBuilder and close the entry.

Specified by:

writePositionTo in interface Block

writePositionTo

public void writePositionTo(int position,
                            io.airlift.slice.SliceOutput output)

Description copied from interface: Block

Appends the value at position to output.

Specified by:

writePositionTo in interface Block

equals

public boolean equals(int position,
                      int offset,
                      Block otherBlock,
                      int otherPosition,
                      int otherOffset,
                      int length)

Description copied from interface: Block

Is the byte sequences at offset in the value at position equal to the byte sequence at otherOffset in the value at otherPosition in otherBlock. This method must be implemented if @{code getSlice} is implemented.

Specified by:

equals in interface Block

hash

public long hash(int position,
                 int offset,
                 int length)

Description copied from interface: Block

Calculates the hash code the byte sequences at offset in the value at position. This method must be implemented if @{code getSlice} is implemented.

Specified by:

hash in interface Block

compareTo

public int compareTo(int leftPosition,
                     int leftOffset,
                     int leftLength,
                     Block rightBlock,
                     int rightPosition,
                     int rightOffset,
                     int rightLength)

Description copied from interface: Block

Compares the byte sequences at offset in the value at position to the byte sequence at otherOffset in the value at otherPosition in otherBlock. This method must be implemented if @{code getSlice} is implemented.

Specified by:

compareTo in interface Block

getSingleValueBlock

public Block getSingleValueBlock(int position)

Description copied from interface: Block

Gets the value at the specified position as a single element block. The returned block should retain only the memory required for a single block.

This method is useful for operators that hold on to a single value without holding on to the entire block.

Specified by:

getSingleValueBlock in interface Block

getEstimatedDataSizeForStats

public long getEstimatedDataSizeForStats(int position)

Description copied from interface: Block

Returns the estimated in memory data size for stats of position. Do not use it for other purpose.

Specified by:

getEstimatedDataSizeForStats in interface Block

isNull

public boolean isNull(int position)

Description copied from interface: Block

Is the specified position null?

Specified by:

isNull in interface Block

getEncodingName

public String getEncodingName()

Description copied from interface: Block

Get the encoding for this block.

Specified by:

getEncodingName in interface Block

copyPositions

public Block copyPositions(int[] positions,
                           int offset,
                           int length)

Description copied from interface: Block

Returns a block containing the specified positions. Positions to copy are stored in a subarray within positions array that starts at offset and has length of length. 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

getRegion

public Block getRegion(int position,
                       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

getRegionSizeInBytes

public long getRegionSizeInBytes(int position,
                                 int length)

Description copied from interface: Block

Returns the size of block.getRegion(position, length). The method can be expensive. Do not use it outside an implementation of Block.

Specified by:

getRegionSizeInBytes in interface Block

getPositionsSizeInBytes

public long getPositionsSizeInBytes(boolean[] positions,
                                    int usedPositionCount)

Description copied from interface: Block

Returns the size of all positions marked true in the positions array. This is equivalent to multiple calls of block.getRegionSizeInBytes(position, length) where you mark all positions for the regions first.

Specified by:

getPositionsSizeInBytes in interface Block

copyRegion

public Block copyRegion(int position,
                        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

getSliceLengthUnchecked

public int getSliceLengthUnchecked(int internalPosition)

Description copied from interface: UncheckedBlock

Gets the length of the slice value at internalPosition - getOffsetBase(). This method must be implemented if getSliceUnchecked is implemented.

Specified by:

getSliceLengthUnchecked in interface UncheckedBlock

getByteUnchecked

public byte getByteUnchecked(int internalPosition)

Description copied from interface: UncheckedBlock

Gets a byte value at internalPosition - getOffsetBase().

Specified by:

getByteUnchecked in interface UncheckedBlock

getShortUnchecked

public short getShortUnchecked(int internalPosition)

Description copied from interface: UncheckedBlock

Gets a little endian short at value at internalPosition - getOffsetBase().

Specified by:

getShortUnchecked in interface UncheckedBlock

getIntUnchecked

public int getIntUnchecked(int internalPosition)

Description copied from interface: UncheckedBlock

Gets a little endian int value at internalPosition - getOffsetBase().

Specified by:

getIntUnchecked in interface UncheckedBlock

getLongUnchecked

public long getLongUnchecked(int internalPosition)

Description copied from interface: UncheckedBlock

Gets a little endian long value at internalPosition - getOffsetBase().

Specified by:

getLongUnchecked in interface UncheckedBlock

getLongUnchecked

public long getLongUnchecked(int internalPosition,
                             int offset)

Description copied from interface: UncheckedBlock

Gets a little endian long at offset in the value at internalPosition - getOffsetBase().

Specified by:

getLongUnchecked in interface UncheckedBlock

getSliceUnchecked

public io.airlift.slice.Slice getSliceUnchecked(int internalPosition,
                                                int offset,
                                                int length)

Description copied from interface: UncheckedBlock

Gets a slice with offset offset at internalPosition - getOffsetBase().

Specified by:

getSliceUnchecked in interface UncheckedBlock

getBlockUnchecked

public Block getBlockUnchecked(int internalPosition)

Description copied from interface: UncheckedBlock

Gets a Block value at internalPosition - getOffsetBase().

Specified by:

getBlockUnchecked in interface UncheckedBlock

getOffsetBase

public int getOffsetBase()

Specified by:

getOffsetBase in interface UncheckedBlock

Returns:

the internal offset of the underlying data structure of this block

isNullUnchecked

public boolean isNullUnchecked(int internalPosition)

Specified by:

isNullUnchecked in interface UncheckedBlock

Returns:

true if value at internalPosition - getOffsetBase() is null