Package org.apache.sysds.runtime.compress.colgroup.mapping

Class MapToUByte

java.lang.Object

org.apache.sysds.runtime.compress.colgroup.mapping.AMapToData

org.apache.sysds.runtime.compress.colgroup.mapping.MapToByte

org.apache.sysds.runtime.compress.colgroup.mapping.MapToUByte

All Implemented Interfaces:

Serializable

public class MapToUByte
extends MapToByte

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
MapToUByte(int unique, int size)

Method Summary

Modifier and Type	Method	Description
void	decompressToRange(double[] c, int rl, int ru, int offR, double[] values)
void	decompressToRangeNoOff(double[] c, int rl, int ru, double[] values)
void	decompressToRangeOff(double[] c, int rl, int ru, int offR, double[] values)
void	fill(int v)	Fill the map with a given value.
int[]	getCounts(int[] ret)	Get the number of counts of each unique value contained in this map.
int	getIndex(int n)	Get the given index back as a integer
static long	getInMemorySize(int dataLength)
int	getMaxPossible()	Get the maximum possible value to encode in this encoding.
MapToFactory.MAP_TYPE	getType()
int	getUpperBoundValue()	Get the maximum value that is possible to allocate inside this map.
void	replace(int v, int r)	Replace v with r for all entries, NOTE! It is assumed that you call this correctly: - with two distinct values that is representable inside the given AMapToData.
AMapToData	resize(int unique)	Reallocate the map, to a smaller instance if applicable.
int	setAndGet(int n, int v)	Set the index to the value and get the contained value after.
void	write(DataOutput out)	Serialize this object to the DataOutput given.

Methods inherited from class org.apache.sysds.runtime.compress.colgroup.mapping.MapToByte

append, appendN, copyBit, copyInt, countRuns, equals, getExactSizeOnDisk, getInMemorySize, lmSparseMatrixRow, set, size, slice

Methods inherited from class org.apache.sysds.runtime.compress.colgroup.mapping.AMapToData

copy, countRuns, equals, getCounts, getMax, getUnique, preAggregateDDC_DDC, preAggregateDDC_RLE, preAggregateDDC_SDCZ, preAggregateDDC_SDCZMultiCol, preAggregateDDC_SDCZSingleCol, preAggregateDense, preAggregateDense, preAggregateRLE_DDC, preAggregateSDCZ_DDC, preAggregateSDCZ_SDCZ, preAggregateSparse, preAggregateSparse, set, setUnique, toString, verify

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

MapToUByte

public MapToUByte(int unique,
                  int size)

Method Detail

getType

public MapToFactory.MAP_TYPE getType()

Overrides:

getType in class MapToByte

getIndex

public int getIndex(int n)

Description copied from class: AMapToData

Get the given index back as a integer

Overrides:

getIndex in class MapToByte

Parameters:

n - the index to get

Returns:

the value represented in that cell as integer

setAndGet

public int setAndGet(int n,
                     int v)

Description copied from class: AMapToData

Set the index to the value and get the contained value after.

Overrides:

setAndGet in class MapToByte

Parameters:

n - index to set.

v - the value to set it to.

Returns:

v as encoded, note this value can be different that the one put in if the map is not able to represent the value

fill

public void fill(int v)

Description copied from class: AMapToData

Fill the map with a given value. NOTE! The value should be representable inside the map. This requirement is not checked.

Overrides:

fill in class MapToByte

Parameters:

v - the value to fill

getInMemorySize

public static long getInMemorySize(int dataLength)

write

public void write(DataOutput out)
           throws IOException

Description copied from class: AMapToData

Serialize this object to the DataOutput given.

Overrides:

write in class MapToByte

Parameters:

out - The object to serialize this object into.

Throws:

IOException - An IO exception if the Serialization fails.

replace

public void replace(int v,
                    int r)

Description copied from class: AMapToData

Replace v with r for all entries, NOTE! It is assumed that you call this correctly: - with two distinct values that is representable inside the given AMapToData.

Overrides:

replace in class MapToByte

Parameters:

v - The value to replace

r - The value to put instead

getUpperBoundValue

public int getUpperBoundValue()

Description copied from class: AMapToData

Get the maximum value that is possible to allocate inside this map.

Overrides:

getUpperBoundValue in class MapToByte

Returns:

The maximum value.

getCounts

public int[] getCounts(int[] ret)

Description copied from class: AMapToData

Get the number of counts of each unique value contained in this map. Note that in the case the mapping is shorter than number of rows the counts sum to the number of mapped values not the number of rows.

Overrides:

getCounts in class MapToByte

Parameters:

ret - The object to return.

Returns:

The counts

getMaxPossible

public int getMaxPossible()

Description copied from class: AMapToData

Get the maximum possible value to encode in this encoding. For instance in a bit you can encode 2 values

Overrides:

getMaxPossible in class MapToByte

Returns:

The maximum number of distinct values to encode

decompressToRange

public void decompressToRange(double[] c,
                              int rl,
                              int ru,
                              int offR,
                              double[] values)

Overrides:

decompressToRange in class MapToByte

decompressToRangeOff

public void decompressToRangeOff(double[] c,
                                 int rl,
                                 int ru,
                                 int offR,
                                 double[] values)

Overrides:

decompressToRangeOff in class MapToByte

decompressToRangeNoOff

public void decompressToRangeNoOff(double[] c,
                                   int rl,
                                   int ru,
                                   double[] values)

Overrides:

decompressToRangeNoOff in class MapToByte

resize

public AMapToData resize(int unique)

Description copied from class: AMapToData

Reallocate the map, to a smaller instance if applicable. Note it does not change the length of the array, just the datatype. Note that it returns the input if the input is the smallest representation that fits, otherwise it will return something that is smaller.

Overrides:

resize in class MapToByte

Parameters:

unique - The number of tuples that should be supported in the resulting map

Returns:

The returned hopefully reduced map.