FixedSizeExpiringSet (LimeWire Collection Component API for Tuesday, March 17 2009)

Overview

Package

Class

Use

Tree

Deprecated

Index

Help

LimeWire Collection Component API

PREV CLASS NEXT CLASS

FRAMES NO FRAMES

SUMMARY: NESTED | FIELD | CONSTR | METHOD

DETAIL: FIELD | CONSTR | METHOD

org.limewire.collection
Class FixedSizeExpiringSet<T>

java.lang.Object
  org.limewire.collection.FixedSizeExpiringSet<T>

All Implemented Interfaces:: Iterable<T>, Collection<T>, Set<T>

public class FixedSizeExpiringSet<T>
extends Object
implements Set<T>, Collection<T>
extends Object
implements Set<T>, Collection<T>

Maintains, at most, a fixed size of objects in a Set for a specified time. FixedSizeExpiringSet never holds more entries than specified in the constructor. This class is a hash-based Set and therefore, objects must correctly contain a Object.hashCode() and Object.equals(Object).

Note: expiration times longer than Long.MAX_VALUE / 10^6 will be truncated.

    try{        
        FixedSizeExpiringSet<String> fses = new FixedSizeExpiringSet<String>(4, 2000);

        fses.add("Abby");
        fses.add("Bob");
        fses.add("Chris");
        fses.add("Dan");
        fses.add("Eric");   

        System.out.println("Size: " + fses.size());
        Thread.sleep(1000);
        System.out.println("Size: " + fses.size());
        Thread.sleep(2000);
        System.out.println("Size (after expiration): " + fses.size());
    } catch(Exception e) {
        e.printStackTrace();
    }

    Output:
        Size: 4
        Size: 4
        Size (after expiration): 0

Author:: Gregorio Roper

Constructor Summary
`FixedSizeExpiringSet()` Simple constructor for the FixedSizeExpiringSet.
`FixedSizeExpiringSet(int size)` Constructor for the FixedSizeExpiringSet.
`FixedSizeExpiringSet(int size, long expireTime)` Constructor for the FixedSizeExpiringSet

Method Summary

boolean add(T arg0)

boolean addAll(Collection<? extends T> coll)
Adds all the elements in collection to this.

void clear()

boolean contains(Object arg0)

boolean containsAll(Collection<?> arg0)
(non-Javadoc)

boolean isEmpty()

Iterator<T> iterator()

boolean remove(Object arg0)

boolean removeAll(Collection<?> arg0)

boolean retainAll(Collection<?> arg0)

int size()

Object[] toArray()





<B> B[]

toArray(B[] arg0)

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface java.util.Set
`equals, hashCode`

Constructor Detail