net.cscott.jutil

Class AggregateMapFactory<K,V>

java.lang.Object

net.cscott.jutil.MapFactory<K,V>

net.cscott.jutil.AggregateMapFactory<K,V>

All Implemented Interfaces:

java.io.Serializable

public class AggregateMapFactory<K,V>
extends MapFactory<K,V>
implements java.io.Serializable

AggregateMapFactory uses a single HashMap as backing store for the many smaller Maps created by this MapFactory. This means that we use much less space and rehash less frequently than if we were using the standard Factories.hashMapFactory(). The iterators of the submaps are fast, unlike those of HashMap.

Version:

$Id: AggregateMapFactory.java,v 1.6 2006-10-30 19:58:05 cananian Exp $

Author:

C. Scott Ananian

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AggregateMapFactory() Creates an AggregateMapFactory.

Method Summary

Modifier and Type	Method and Description
java.util.Map<K,V>	makeMap(java.util.Map<? extends K,? extends V> mm) Generates a new mutable Map which is a subset of the backing set of this AggregateMapFactory.

Methods inherited from class net.cscott.jutil.MapFactory

makeMap

Methods inherited from class java.lang.Object

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

Constructor Detail

AggregateMapFactory

public AggregateMapFactory()

Creates an AggregateMapFactory.

Method Detail

makeMap

public java.util.Map<K,V> makeMap(java.util.Map<? extends K,? extends V> mm)

Generates a new mutable Map which is a subset of the backing set of this AggregateMapFactory.

Specified by:

makeMap in class MapFactory<K,V>