Class DoubleSequence

java.lang.Object

io.nosqlbench.virtdata.lib.vectors.primitive.DoubleSequence

All Implemented Interfaces:

LongToDoubleFunction

Direct Known Subclasses:

DoubleCache, UnitSteps

public abstract class DoubleSequence
extends Object
implements LongToDoubleFunction

A VectorSequence is a sequence of vectors which are a deterministic map between a set of ordinal values and vector values. Ideally, they are computed with closed-form functions. If not, they should be pre-computed in cached. Although each element is provided in an array, this is simply a wrapper for one-to-many cardinality which avoids auto-boxing. If a user of DoubleSequence does not understand one-to-many semantics and receives values longer than 1 element, then an error should be thrown.

Field Summary

Fields

Modifier and Type	Field	Description
protected final long	cardinality

Constructor Summary

Constructors

Constructor	Description
DoubleSequence(long cardinality)

Method Summary

Modifier and Type	Method	Description
long	getCardinality()

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.LongToDoubleFunction

applyAsDouble

Field Details

cardinality

protected final long cardinality

Constructor Details

DoubleSequence

public DoubleSequence(long cardinality)

Method Details

getCardinality

public long getCardinality()

Returns:

the number of unique vectors produced.