Module ojalgo

Package org.ojalgo.netio

Class SegmentedFile.Builder

java.lang.Object

org.ojalgo.netio.SegmentedFile.Builder

Enclosing class:

SegmentedFile

public static final class SegmentedFile.Builder
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field	Description
private static long	k
private long	myBytesPerSegment
private int	myDelimiter
private java.io.File	myFile
private int	myParallelism

Constructor Summary

Constructors

Constructor	Description
Builder(java.io.File file)

Method Summary

Modifier and Type	Method	Description
SegmentedFile	build()
SegmentedFile.Builder	delimiter(byte delimiter)	The delimiter is used to determine where to split the file into segments.
SegmentedFile.Builder	parallelism(int parallelism)
SegmentedFile.Builder	parallelism(java.util.function.IntSupplier parallelism)	The expected number of threads that will be used to process the file.
SegmentedFile.Builder	segmentBytes(long bytesPerSegment)	The target (max) size (bytes) of each segment.
SegmentedFile.Builder	segmentKiloBytes(long kiloBytesPerSegment)
SegmentedFile.Builder	segmentMegaBytes(long megaBytesPerSegment)

Methods inherited from class java.lang.Object

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

Field Detail

k

private static final long k

See Also:

Constant Field Values

myBytesPerSegment

private long myBytesPerSegment

myDelimiter

private int myDelimiter

myFile

private final java.io.File myFile

myParallelism

private int myParallelism

Constructor Detail

Builder

Builder(java.io.File file)

Method Detail

build

public SegmentedFile build()

delimiter

public SegmentedFile.Builder delimiter(byte delimiter)

The delimiter is used to determine where to split the file into segments. The default value is '\n' (newline).

parallelism

public SegmentedFile.Builder parallelism(int parallelism)

See Also:

parallelism(IntSupplier)

parallelism

public SegmentedFile.Builder parallelism(java.util.function.IntSupplier parallelism)

The expected number of threads that will be used to process the file. The number of segments will a multiple of this number. The default value is the number of CPU cores.

segmentBytes

public SegmentedFile.Builder segmentBytes(long bytesPerSegment)

The target (max) size (bytes) of each segment. The actual size will be less than or equal to this value. The last segment will be smaller than or equal to the other segments.

segmentKiloBytes

public SegmentedFile.Builder segmentKiloBytes(long kiloBytesPerSegment)

See Also:

segmentBytes(long)

segmentMegaBytes

public SegmentedFile.Builder segmentMegaBytes(long megaBytesPerSegment)

See Also:

segmentBytes(long)