net.ontopia.utils
Class GrabberCollection<O,G>

java.lang.Object
  net.ontopia.utils.GrabberCollection<O,G>

All Implemented Interfaces:

Iterable<G>, Collection<G>, CachedIF

public class GrabberCollection<O,G>
extends Object
implements Collection<G>, CachedIF

INTERNAL: A collection that uses a grabber to populate itself by grabbing the individual objects of the nested collection. A decider can be used to decide whether grabbed objects should be added to the collection or not.

Field Summary

protected Collection<O>	coll
protected DeciderIF<G>	decider
protected boolean	grabbed
protected Collection<G>	grabbed_coll
protected GrabberIF<O,G>	grabber

Constructor Summary

GrabberCollection(Collection<O> coll, GrabberIF<O,G> grabber)

GrabberCollection(Collection<O> coll, GrabberIF<O,G> grabber, DeciderIF<G> decider)

Method Summary

boolean	add(G o)
boolean	addAll(Collection<? extends G> c)
void	clear()
boolean	contains(Object o)
boolean	containsAll(Collection<?> c)
boolean	equals(Object o)
protected Collection<G>	getCollection()
boolean	isEmpty()
Iterator<G>	iterator()
void	refresh() Refreshes the collection by looping over the nested collection and regrabbing its items.
boolean	remove(Object o)
boolean	removeAll(Collection<?> c)
boolean	retainAll(Collection<?> c)
int	size()
Object[]	toArray()
<G> G[]	toArray(G[] a)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

hashCode

Field Detail

coll

protected Collection<O> coll

grabber

protected GrabberIF<O,G> grabber

decider

protected DeciderIF<G> decider

grabbed

protected boolean grabbed

grabbed_coll

protected Collection<G> grabbed_coll

Constructor Detail

GrabberCollection

public GrabberCollection(Collection<O> coll,
                         GrabberIF<O,G> grabber)

GrabberCollection

public GrabberCollection(Collection<O> coll,
                         GrabberIF<O,G> grabber,
                         DeciderIF<G> decider)

Method Detail

refresh

public void refresh()

Refreshes the collection by looping over the nested collection and regrabbing its items. Any changes done to the previous collection will be lost.

Specified by:

refresh in interface CachedIF

getCollection

protected Collection<G> getCollection()

clear

public void clear()

Specified by:

clear in interface Collection<G>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<G>

containsAll

public boolean containsAll(Collection<?> c)

Specified by:

containsAll in interface Collection<G>

equals

public boolean equals(Object o)

Specified by:

equals in interface Collection<G>

Overrides:

equals in class Object

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<G>

iterator

public Iterator<G> iterator()

Specified by:

iterator in interface Iterable<G>

Specified by:

iterator in interface Collection<G>

size

public int size()

Specified by:

size in interface Collection<G>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<G>

toArray

public <G> G[] toArray(G[] a)

Specified by:

toArray in interface Collection<G>

add

public boolean add(G o)

Specified by:

add in interface Collection<G>

addAll

public boolean addAll(Collection<? extends G> c)

Specified by:

addAll in interface Collection<G>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<G>

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<G>

retainAll

public boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<G>