Package com.apple.foundationdb.async

Class RankedSet.ConfigBuilder

java.lang.Object

com.apple.foundationdb.async.RankedSet.ConfigBuilder

Enclosing class:

RankedSet

public static class RankedSet.ConfigBuilder
extends Object

Builder for RankedSet.Config.

See Also:

• RankedSet.newConfigBuilder()

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ConfigBuilder()
protected	ConfigBuilder(RankedSet.HashFunction hashFunction, int nlevels, boolean countDuplicates)

Method Summary

Modifier and Type	Method	Description
RankedSet.Config	build()
RankedSet.HashFunction	getHashFunction()
int	getNLevels()
boolean	isCountDuplicates()
RankedSet.ConfigBuilder	setCountDuplicates(boolean countDuplicates)	Set whether to count duplicate keys separately.
RankedSet.ConfigBuilder	setHashFunction(RankedSet.HashFunction hashFunction)	Set the hash function to use.
RankedSet.ConfigBuilder	setNLevels(int nlevels)	Set the hash function to use.

Methods inherited from class java.lang.Object

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

Constructor Details

ConfigBuilder

protected ConfigBuilder()

ConfigBuilder

protected ConfigBuilder(RankedSet.HashFunction hashFunction,
 int nlevels,
 boolean countDuplicates)

Method Details

getHashFunction

public RankedSet.HashFunction getHashFunction()

setHashFunction

public RankedSet.ConfigBuilder setHashFunction(RankedSet.HashFunction hashFunction)

Set the hash function to use. It is possible to change the hash function of an existing ranked set, although this is not recommended since the distribution in the skip list may become uneven as a result.

Parameters:

hashFunction - the hash function to use

Returns:

this builder

getNLevels

public int getNLevels()

setNLevels

public RankedSet.ConfigBuilder setNLevels(int nlevels)

Set the hash function to use. It is not currently possible to change the number of levels for an existing ranked set.

Parameters:

nlevels - the number of levels to use

Returns:

this builder

isCountDuplicates

public boolean isCountDuplicates()

setCountDuplicates

public RankedSet.ConfigBuilder setCountDuplicates(boolean countDuplicates)

Set whether to count duplicate keys separately. If duplicate keys are counted separately, ranks after them are increased by the number of duplicates.

Parameters:

countDuplicates - whether to count duplicates

Returns:

this builder

build

public RankedSet.Config build()