Class SparseStore.Builder<N extends Comparable<N>>

java.lang.Object

org.ojalgo.matrix.store.SparseStore.Builder<N>

All Implemented Interfaces:

Factory2D.Builder<SparseStore<N>>, Mutate1D, Mutate2D, Structure1D, Structure2D

Enclosing class:

SparseStore<N extends Comparable<N>>

public static final class SparseStore.Builder<N extends Comparable<N>>
extends Object
implements Factory2D.Builder<SparseStore<N>>

May be a preferable way to build a sparse matrix if:

• You don't know the number of nonzero elements in advance.
• Setting elements in strictly increasing column major order is not possible.
• Multiple threads are used to set elements.

This builder uses separate/additional memory to store the elements before they are copied to the actual sparse matrix. The actual sparse matrix is built when the build() method is called.

Nested Class Summary

Nested classes/interfaces inherited from interface Mutate1D

Mutate1D.Sortable

Nested classes/interfaces inherited from interface Mutate2D

Mutate2D.Exchangeable, Mutate2D.Fillable<N>, Mutate2D.Mixable<N>, Mutate2D.Modifiable<N>, Mutate2D.ModifiableReceiver<N>, Mutate2D.Receiver<N>

Nested classes/interfaces inherited from interface Structure1D

Structure1D.BasicMapper<T>, Structure1D.IndexMapper<T>, Structure1D.IntIndex, Structure1D.Logical<S,B>, Structure1D.LongIndex, Structure1D.LoopCallback

Nested classes/interfaces inherited from interface Structure2D

Structure2D.IntRowColumn, Structure2D.Logical<S,B>, Structure2D.LongRowColumn, Structure2D.ReducibleTo1D<R>, Structure2D.Reshapable, Structure2D.RowColumnKey<R,C>, Structure2D.RowColumnMapper<R,C>

Field Summary

Fields

Modifier and Type	Field	Description
private final int	myColDim
private final Set<EntryPair.KeyedPrimitive<Comparable<?>>>	myElements
private final PhysicalStore.Factory<N,?>	myPhysicalFactory
private final int	myRowDim

Constructor Summary

Constructors

Constructor	Description
Builder(PhysicalStore.Factory<N,?> physicalFactory, int rowDim, int colDim)

Method Summary

Modifier and Type	Method	Description
SparseStore<N>	build()
int	getColDim()
int	getRowDim()
void	set(int row, int col, double value)
void	set(long row, long col, Comparable<?> value)

Methods inherited from class Object

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

Methods inherited from interface Mutate1D

reset

Methods inherited from interface Mutate2D

set, set, set, set, set, set, set, set, set, set, set, set, set, set, set, set, set, set, set, set, set, set, set, set

Methods inherited from interface Structure2D

count, countColumns, countRows, firstInColumn, firstInRow, getMaxDim, getMinDim, isEmpty, isFat, isScalar, isSquare, isTall, isVector, limitOfColumn, limitOfRow, size

Field Details

myColDim

private final int myColDim

myElements

private final Set<EntryPair.KeyedPrimitive<Comparable<?>>> myElements

myPhysicalFactory

private final PhysicalStore.Factory<N extends Comparable<N>, ?> myPhysicalFactory

myRowDim

private final int myRowDim

Constructor Details

Builder

Builder(PhysicalStore.Factory<N,?> physicalFactory,
 int rowDim,
 int colDim)

Method Details

build

public SparseStore<N> build()

Specified by:

build in interface Factory2D.Builder<N extends Comparable<N>>

getColDim

public int getColDim()

Specified by:

getColDim in interface Structure2D

Returns:

The number of columns

getRowDim

public int getRowDim()

Specified by:

getRowDim in interface Structure2D

Returns:

The number of rows

set

public void set(int row,
 int col,
 double value)

Specified by:

set in interface Mutate2D

set

public void set(long row,
 long col,
 Comparable<?> value)

Specified by:

set in interface Mutate2D