org.apache.sysml.runtime.compress

Class ReaderColumnSelection

java.lang.Object

org.apache.sysml.runtime.compress.ReaderColumnSelection

Direct Known Subclasses:

ReaderColumnSelectionDense, ReaderColumnSelectionDenseSample, ReaderColumnSelectionSparse

public abstract class ReaderColumnSelection
extends Object

Base class for all column selection readers.

Field Summary

Fields

Modifier and Type	Field and Description
protected int[]	_colIndexes
protected int	_lastRow
protected int	_numRows
protected boolean	_skipZeros

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ReaderColumnSelection(int[] colIndexes, int numRows, boolean skipZeros)

Method Summary

Modifier and Type	Method and Description
int	getCurrentRowIndex()
abstract DblArray	nextRow() Gets the next row, null when no more rows.
void	reset() Resets the reader to the first row.

Methods inherited from class java.lang.Object

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

Field Detail

_colIndexes

protected int[] _colIndexes

_numRows

protected int _numRows

_lastRow

protected int _lastRow

_skipZeros

protected boolean _skipZeros

Constructor Detail

ReaderColumnSelection

protected ReaderColumnSelection(int[] colIndexes,
                                int numRows,
                                boolean skipZeros)

Method Detail

nextRow

public abstract DblArray nextRow()

Gets the next row, null when no more rows.

Returns:

next row

getCurrentRowIndex

public int getCurrentRowIndex()

reset

public void reset()

Resets the reader to the first row.