harpoon.Util.Collections
Class AggregateSetFactory
java.lang.Object
|
+--harpoon.Util.Collections.CollectionFactory
|
+--harpoon.Util.Collections.SetFactory
|
+--harpoon.Util.Collections.AggregateSetFactory
- All Implemented Interfaces:
- Serializable
- public class AggregateSetFactory
- extends SetFactory
- implements Serializable
AggregateSetFactory
uses a single HashSet
as backing store for the many smaller Set
s 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
.
Be aware that the remove()
method of the subsets is slow,
but the iterator is as fast as ArrayList
.
- Version:
- $Id: AggregateSetFactory.java,v 1.2 2002/02/25 21:09:04 cananian Exp $
- Author:
- C. Scott Ananian <cananian@alumni.princeton.edu>
- See Also:
- Serialized Form
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
AggregateSetFactory
public AggregateSetFactory()
- Creates an
AggregateSetFactory
.
makeSet
public Set makeSet(Collection 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 class SetFactory