Class DataBatch

java.lang.Object

org.ojalgo.data.DataBatch

All Implemented Interfaces:

Access1D<Double>, Access2D<Double>, Access2D.Collectable<Double, Mutate2D.Receiver<Double>>, Structure1D, Structure2D

public final class DataBatch
extends Object
implements Access2D<Double>, Access2D.Collectable<Double, Mutate2D.Receiver<Double>>

A reusable data batch. Build 2D data structures by adding a set of 1D structures treating then as rows. Use it, reset() and do it again.

Nested Class Summary

Nested classes/interfaces inherited from interface Access2D

Access2D.Aggregatable<N>, Access2D.Collectable<N,R>, Access2D.ColumnView<N>, Access2D.ElementView<N>, Access2D.RowView<N>, Access2D.SelectionView<N>, Access2D.Sliceable<N>, Access2D.Visitable<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 int	myCursor
private final Mutate2D.ModifiableReceiver<Double>	myData

Constructor Summary

Constructors

Constructor	Description
DataBatch(Mutate2D.ModifiableReceiver<Double> data)

Method Summary

Modifier and Type	Method	Description
void	addRow(Access1D<Double> row)
void	addRows(Collection<? extends Access1D<Double>> rows)
void	addRowWithSingleUnit(int unitIndex)
long	countColumns()	Assumes all rows are of equal length and will only check the first.
long	countRows()	Only need to implement if the structure may contain more than Integer.MAX_VALUE elements.
double	doubleValue(int row, int col)	Extracts one element of this matrix as a double.
static DataBatch	from(Factory2D<? extends Mutate2D.ModifiableReceiver<Double>> factory, int batchSize, int dataNodes)	With the batch size/capacity specified.
Double	get(long row, long col)
int	getColDim()
int	getRowDim()
boolean	isFull()
int	remaining()	Remaining capacity / batch entries / number of rows.
void	reset()
void	supplyTo(Mutate2D.Receiver<Double> receiver)

Methods inherited from class Object

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

Methods inherited from interface Access1D

asCollectable1D, asKeyed1D, asList, axpy, dot, select, supplyTo, toList, toRawCopy1D

Methods inherited from interface Access2D

asCollectable2D, asKeyed2D, byteValue, byteValue, byteValue, byteValue, columns, columns, columns, doubleValue, doubleValue, doubleValue, elements, floatValue, floatValue, floatValue, floatValue, get, intValue, intValue, intValue, intValue, longValue, longValue, longValue, longValue, nonzeros, rows, rows, rows, select, select, shortValue, shortValue, shortValue, shortValue, toRawCopy2D

Methods inherited from interface Access2D.Collectable

collect

Methods inherited from interface Structure2D

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

Field Details

myCursor

private int myCursor

myData

private final Mutate2D.ModifiableReceiver<Double> myData

Constructor Details

DataBatch

DataBatch(Mutate2D.ModifiableReceiver<Double> data)

Method Details

from

public static DataBatch from(Factory2D<? extends Mutate2D.ModifiableReceiver<Double>> factory,
 int batchSize,
 int dataNodes)

With the batch size/capacity specified. The returned instance will throw an exception if too many rows are added to it.

addRow

public void addRow(Access1D<Double> row)

addRows

public void addRows(Collection<? extends Access1D<Double>> rows)

addRowWithSingleUnit

public void addRowWithSingleUnit(int unitIndex)

countColumns

public long countColumns()

Assumes all rows are of equal length and will only check the first. Returns 0 if there are no rows.

Specified by:

countColumns in interface Structure2D

Returns:

The number of columns

See Also:

• Structure2D.countColumns()

countRows

public long countRows()

Description copied from interface: Structure2D

Only need to implement if the structure may contain more than Integer.MAX_VALUE elements.

Specified by:

countRows in interface Structure2D

Returns:

The number of rows

doubleValue

public double doubleValue(int row,
 int col)

Description copied from interface: Access2D

Extracts one element of this matrix as a double.

Specified by:

doubleValue in interface Access2D<Double>

Parameters:

row - A row index.

col - A column index.

Returns:

One matrix element

get

public Double get(long row,
 long col)

Specified by:

get in interface Access2D<Double>

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

isFull

public boolean isFull()

remaining

public int remaining()

Remaining capacity / batch entries / number of rows.

reset

public void reset()

supplyTo

public void supplyTo(Mutate2D.Receiver<Double> receiver)

Specified by:

supplyTo in interface Access2D.Collectable<Double, Mutate2D.Receiver<Double>>