org.apache.sysds.runtime.compress.readers

Class ReaderColumnSelection

java.lang.Object

org.apache.sysds.runtime.compress.readers.ReaderColumnSelection

Direct Known Subclasses:

ReaderColumnSelectionBitSet, ReaderColumnSelectionDenseMultiBlock, ReaderColumnSelectionDenseMultiBlockTransposed, ReaderColumnSelectionDenseSingleBlock, ReaderColumnSelectionDenseSingleBlockTransposed, ReaderColumnSelectionSparse, ReaderColumnSelectionSparseTransposed, ReaderCompressedSelection

public abstract class ReaderColumnSelection
extends Object

Base class for all column selection readers.

Method Summary

Modifier and Type	Method and Description
static ReaderColumnSelection	createCompressedReader(CompressedMatrixBlock compBlock, int[] colIndices)
static ReaderColumnSelection	createReader(MatrixBlock rawBlock, int[] colIndices, boolean transposed)
int	getCurrentRowIndex()
DblArray	nextRow() Gets the next row, null when no more rows.

Methods inherited from class java.lang.Object

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

Method Detail

nextRow

public DblArray nextRow()

Gets the next row, null when no more rows.

Returns:

next row

getCurrentRowIndex

public int getCurrentRowIndex()

createReader

public static ReaderColumnSelection createReader(MatrixBlock rawBlock,
                                                 int[] colIndices,
                                                 boolean transposed)

createCompressedReader

public static ReaderColumnSelection createCompressedReader(CompressedMatrixBlock compBlock,
                                                           int[] colIndices)