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

Class MapToFactory

java.lang.Object

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

public final class MapToFactory
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MapToFactory.MAP_TYPE

Constructor Summary

Constructors

Constructor and Description
MapToFactory()

Method Summary

Modifier and Type	Method and Description
static AMapToData	create(int size, ABitmap ubm)
static AMapToData	create(int size, boolean zeros, IntArrayList[] values)
static AMapToData	create(int size, int numTuples)
static long	estimateInMemorySize(int size, int numTuples)
static AMapToData	join(AMapToData left, AMapToData right)
static AMapToData	readIn(DataInput in)
static AMapToData	resize(AMapToData d, int numTuples) Reshape the map, to a smaller instance if applicable.

Methods inherited from class java.lang.Object

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

Constructor Detail

MapToFactory

public MapToFactory()

Method Detail

create

public static AMapToData create(int size,
                                ABitmap ubm)

create

public static AMapToData create(int size,
                                boolean zeros,
                                IntArrayList[] values)

create

public static AMapToData create(int size,
                                int numTuples)

resize

public static AMapToData resize(AMapToData d,
                                int numTuples)

Reshape the map, to a smaller instance if applicable. Note that it returns the input if the input is the smallest representation that fits, otherwise it will return something that is smaller.

Parameters:

d - The Input mat to potentially reduce the size of.

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

Returns:

The returned hopefully reduced map.

estimateInMemorySize

public static long estimateInMemorySize(int size,
                                        int numTuples)

readIn

public static AMapToData readIn(DataInput in)
                         throws IOException

Throws:

IOException

join

public static AMapToData join(AMapToData left,
                              AMapToData right)