Class SequenceOf

java.lang.Object

io.nosqlbench.virtdata.library.basics.shared.from_long.to_long.SequenceOf

All Implemented Interfaces:

LongUnaryOperator

public class SequenceOf
extends Object
implements LongUnaryOperator

SequenceOf bindings allow you to specify an order and count of a set of values which will then be repeated in that order.

Constructor Summary

Constructors

Constructor	Description
SequenceOf(long ignored, String spec)	This function produces values from a lookup table for direct control of numerical sequences.

Method Summary

Modifier and Type	Method	Description
long	applyAsLong(long operand)
static long[]	parseSequence(String input)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.LongUnaryOperator

andThen, compose

Constructor Details

SequenceOf

public SequenceOf(long ignored,
 String spec)

This function produces values from a lookup table for direct control of numerical sequences. The sequence spec is a string containing the sequence values and their occurences, defaulting to 1 each. Example: "1:6 2 3 4 5", which means "1 at a relative frequency of 6 and 2, 3, 4, and 5 at a relative frequency of 1 each. This will yield pattern "1, 1, 1, 1, 1, 1, 2, 3, 4, 5, 1, 1, 1, 1, 1, 1, 2, 3, 4, 5, ..."

Each implementation of SequenceOf must include a type sigil as the first parameter to disambiguate it from the others.

Parameters:

ignored - any long value, discarded after signature matching. The exampleValue is thrown away, but is necessary for matching the right version of SequenceOf.

spec - A string of numbers separated by spaces, semicolons, or commas. This is the sequence spec..

Method Details

parseSequence

public static long[] parseSequence(String input)

applyAsLong

public long applyAsLong(long operand)

Specified by:

applyAsLong in interface LongUnaryOperator