Package com.tangosol.util

Class SegmentedHashSet

java.lang.Object

java.util.AbstractCollection

java.util.AbstractSet

com.tangosol.util.MapSet

com.tangosol.util.SegmentedHashSet

All Implemented Interfaces:

ExternalizableLite, Externalizable, Serializable, Cloneable, Iterable, Collection, Set

public class SegmentedHashSet
extends MapSet

An implementation of java.util.Set that is optimized for heavy concurrent use.

Since:

Coherence 3.5.1

Author:

jh 2009.08.28

See Also:

• Serialized Form

Field Summary

Fields inherited from class com.tangosol.util.MapSet

m_map, NO_VALUE

Constructor Summary

Constructors

Constructor	Description
SegmentedHashSet()	Construct a thread-safe hash set using the default settings.
SegmentedHashSet(int cInitialBuckets, float flLoadFactor, float flGrowthRate)	Construct a thread-safe hash set using the specified settings.

Method Summary

Modifier and Type	Method	Description
protected Map	instantiateMap()	Factory pattern: Provide an underlying Map for this Set implementation to store its contents in.

Methods inherited from class com.tangosol.util.MapSet

add, addAll, clear, clone, contains, containsAll, getMap, iterator, readExternal, readExternal, remove, removeAll, retainAll, size, toArray, toArray, writeExternal, writeExternal

Methods inherited from class java.util.AbstractSet

equals, hashCode

Methods inherited from class java.util.AbstractCollection

isEmpty, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.Set

isEmpty, spliterator

Constructor Details

SegmentedHashSet

public SegmentedHashSet()

Construct a thread-safe hash set using the default settings.

SegmentedHashSet

public SegmentedHashSet(int cInitialBuckets,
 float flLoadFactor,
 float flGrowthRate)

Construct a thread-safe hash set using the specified settings.

Parameters:

cInitialBuckets - the initial number of hash buckets, 0 < n

flLoadFactor - the acceptable load factor before resizing occurs, 0 < n, such that a load factor of 1.0 causes resizing when the number of entries exceeds the number of buckets

flGrowthRate - the rate of bucket growth when a resize occurs, 0 < n, such that a growth rate of 1.0 will double the number of buckets: bucketcount = bucketcount * (1 + growthrate)

Method Details

instantiateMap

protected Map instantiateMap()

Factory pattern: Provide an underlying Map for this Set implementation to store its contents in.

Overrides:

instantiateMap in class MapSet

Returns:

a new Map instance