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

Interface MapToFactory

public interface MapToFactory

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	MapToFactory.MAP_TYPE

Field Summary

Fields

Modifier and Type	Field	Description
static org.apache.commons.logging.Log	LOG

Method Summary

Static Methods

Modifier and Type	Method	Description
static AMapToData	create(int size, boolean zeros, IntArrayList[] values)
static AMapToData	create(int size, int numTuples)	Create and allocate a map with the given size and support for upto the num tuples argument of values
static AMapToData	create(int size, int[] values, int nUnique)
static AMapToData	create(int size, ABitmap ubm)
static AMapToData	create(int size, MapToFactory.MAP_TYPE t)
static long	estimateInMemorySize(int size, int numTuples)
static AMapToData	readIn(DataInput in)
static AMapToData	resize(AMapToData d, int numTuples)	Reshape the map, to a smaller instance if applicable.
static AMapToData	resizeForce(AMapToData d, MapToFactory.MAP_TYPE t)	Force the mapping into an other mapping type.

Field Detail

LOG

static final org.apache.commons.logging.Log LOG

Method Detail

create

static AMapToData create(int size,
                         ABitmap ubm)

create

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

create

static AMapToData create(int size,
                         int[] values,
                         int nUnique)

create

static AMapToData create(int size,
                         int numTuples)

Create and allocate a map with the given size and support for upto the num tuples argument of values

Parameters:

size - The number of cells to allocate

numTuples - The maximum value to be able to represent inside the map.

Returns:

A new map

create

static AMapToData create(int size,
                         MapToFactory.MAP_TYPE t)

resize

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.

resizeForce

static AMapToData resizeForce(AMapToData d,
                              MapToFactory.MAP_TYPE t)

Force the mapping into an other mapping type. This method is unsafe since if there is overflows in the conversions, they are not handled. Also if the change is into the same type a new map is allocated anyway.

Parameters:

d - The map to resize.

t - The type to resize to.

Returns:

A new allocated mapToData with the specified type.

estimateInMemorySize

static long estimateInMemorySize(int size,
                                 int numTuples)

readIn

static AMapToData readIn(DataInput in)
                  throws IOException

Throws:

IOException