Package net.cscott.jutil

Class AggregateSetFactory<V>

java.lang.Object

net.cscott.jutil.AggregateSetFactory<V>

All Implemented Interfaces:

Serializable, CollectionFactory<V>, SetFactory<V>

public class AggregateSetFactory<V>
extends Object
implements SetFactory<V>, Serializable

AggregateSetFactory uses a single HashMap as backing store for the many smaller Sets created by this SetFactory. This means that we use much less space and rehash less frequently than if we were using the standard Factories.hashSetFactory().

Author:

C. Scott Ananian <cananian@alumni.princeton.edu>

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
AggregateSetFactory()	Creates an AggregateSetFactory.

Method Summary

Modifier and Type	Method	Description
Set<V>	makeSet(Collection<? extends V> c)	Generates a new mutable Set which is a subset of the backing set of this AggregateSetFactory.

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.cscott.jutil.SetFactory

makeCollection, makeCollection, makeCollection, makeSet, makeSet

Constructor Details

AggregateSetFactory

public AggregateSetFactory()

Creates an AggregateSetFactory.

Method Details

makeSet

public Set<V> makeSet(Collection<? extends V> c)

Generates a new mutable Set which is a subset of the backing set of this AggregateSetFactory. WARNING: The remove() method of the returned Set is very slow.

Specified by:

makeSet in interface SetFactory<V>