net.ontopia.persistence.proxy
Class TrackableLazySet

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractSet<E>
          java.util.HashSet
              net.ontopia.persistence.proxy.TrackableLazySet

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.lang.Iterable, java.util.Collection, java.util.Set, TrackableCollectionIF

public class TrackableLazySet
extends java.util.HashSet
implements TrackableCollectionIF

INTERNAL: A set implementation that track the changes performed on it. It keeps track of the objects that have been added and the ones that has been removed. What makes this implementation different from TrackableSet is that the field value is only loaded from the storage when it is actually needed.

See Also:

Serialized Form

Field Summary

protected java.util.Set	added
protected int	field
protected IdentityIF	identity
protected boolean	loaded
protected java.util.Set	removed
protected TransactionIF	txn

Constructor Summary

TrackableLazySet(TransactionIF txn, IdentityIF identity, int field)

Method Summary

boolean	add(java.lang.Object o)
boolean	addAll(java.util.Collection c)
boolean	addWithTracking(java.lang.Object _o) INTERNAL: Adds the item to the collection tracking the change.
void	clear()
void	clearWithTracking() INTERNAL: Removes all items from the collection tracking the changes.
boolean	contains(java.lang.Object o)
boolean	containsAll(java.util.Collection c)
void	dump()
boolean	equals(java.lang.Object o)
java.util.Collection	getAdded() INTERNAL: Gets the objects that have been added to the set.
java.util.Collection	getRemoved() INTERNAL: Gets the objects that have been removed from the set.
int	hashCode()
boolean	isEmpty()
boolean	isLoaded()
java.util.Iterator	iterator()
protected void	loadField()
boolean	remove(java.lang.Object o)
boolean	removeAll(java.util.Collection c)
boolean	removeWithTracking(java.lang.Object _o) INTERNAL: Removes the item from the collection tracking the change.
void	resetTracking() INTERNAL: Clears the list of added and removed objects without touching the original collection.
boolean	retainAll(java.util.Collection c)
void	selfAdded() INTERNAL: Consider existing collection elements as having just been added.
int	size()
java.lang.Object[]	toArray()
java.lang.Object[]	toArray(java.lang.Object[] a)

Methods inherited from class java.util.HashSet

clone

Methods inherited from class java.util.AbstractCollection

toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

txn

protected TransactionIF txn

identity

protected IdentityIF identity

field

protected int field

loaded

protected boolean loaded

added

protected java.util.Set added

removed

protected java.util.Set removed

Constructor Detail

TrackableLazySet

public TrackableLazySet(TransactionIF txn,
                        IdentityIF identity,
                        int field)

Method Detail

dump

public void dump()

resetTracking

public void resetTracking()

Description copied from interface: TrackableCollectionIF

INTERNAL: Clears the list of added and removed objects without touching the original collection.

Specified by:

resetTracking in interface TrackableCollectionIF

selfAdded

public void selfAdded()

Description copied from interface: TrackableCollectionIF

INTERNAL: Consider existing collection elements as having just been added.

Specified by:

selfAdded in interface TrackableCollectionIF

getAdded

public java.util.Collection getAdded()

Description copied from interface: TrackableCollectionIF

INTERNAL: Gets the objects that have been added to the set. This collection is immutable. Null is returned if the added collection has not been initialized, ie. it is empty.

Specified by:

getAdded in interface TrackableCollectionIF

getRemoved

public java.util.Collection getRemoved()

Description copied from interface: TrackableCollectionIF

INTERNAL: Gets the objects that have been removed from the set. This collection is immutable. Null is returned if the removed collection has not been initialized, ie. it is empty.

Specified by:

getRemoved in interface TrackableCollectionIF

addWithTracking

public boolean addWithTracking(java.lang.Object _o)

Description copied from interface: TrackableCollectionIF

INTERNAL: Adds the item to the collection tracking the change.

Specified by:

addWithTracking in interface TrackableCollectionIF

removeWithTracking

public boolean removeWithTracking(java.lang.Object _o)

Description copied from interface: TrackableCollectionIF

INTERNAL: Removes the item from the collection tracking the change.

Specified by:

removeWithTracking in interface TrackableCollectionIF

clearWithTracking

public void clearWithTracking()

Description copied from interface: TrackableCollectionIF

INTERNAL: Removes all items from the collection tracking the changes.

Specified by:

clearWithTracking in interface TrackableCollectionIF

clear

public void clear()

Specified by:

clear in interface java.util.Collection

Specified by:

clear in interface java.util.Set

Overrides:

clear in class java.util.HashSet

add

public boolean add(java.lang.Object o)

Specified by:

add in interface java.util.Collection

Specified by:

add in interface java.util.Set

Overrides:

add in class java.util.HashSet

addAll

public boolean addAll(java.util.Collection c)

Specified by:

addAll in interface java.util.Collection

Specified by:

addAll in interface java.util.Set

Overrides:

addAll in class java.util.AbstractCollection

remove

public boolean remove(java.lang.Object o)

Specified by:

remove in interface java.util.Collection

Specified by:

remove in interface java.util.Set

Overrides:

remove in class java.util.HashSet

removeAll

public boolean removeAll(java.util.Collection c)

Specified by:

removeAll in interface java.util.Collection

Specified by:

removeAll in interface java.util.Set

Overrides:

removeAll in class java.util.AbstractSet

retainAll

public boolean retainAll(java.util.Collection c)

Specified by:

retainAll in interface java.util.Collection

Specified by:

retainAll in interface java.util.Set

Overrides:

retainAll in class java.util.AbstractCollection

iterator

public java.util.Iterator iterator()

Specified by:

iterator in interface java.lang.Iterable

Specified by:

iterator in interface java.util.Collection

Specified by:

iterator in interface java.util.Set

Overrides:

iterator in class java.util.HashSet

contains

public boolean contains(java.lang.Object o)

Specified by:

contains in interface java.util.Collection

Specified by:

contains in interface java.util.Set

Overrides:

contains in class java.util.HashSet

containsAll

public boolean containsAll(java.util.Collection c)

Specified by:

containsAll in interface java.util.Collection

Specified by:

containsAll in interface java.util.Set

Overrides:

containsAll in class java.util.AbstractCollection

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in interface java.util.Collection

Specified by:

equals in interface java.util.Set

Overrides:

equals in class java.util.AbstractSet

hashCode

public int hashCode()

Specified by:

hashCode in interface java.util.Collection

Specified by:

hashCode in interface java.util.Set

Overrides:

hashCode in class java.util.AbstractSet

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Collection

Specified by:

isEmpty in interface java.util.Set

Overrides:

isEmpty in class java.util.HashSet

size

public int size()

Specified by:

size in interface java.util.Collection

Specified by:

size in interface java.util.Set

Overrides:

size in class java.util.HashSet

toArray

public java.lang.Object[] toArray()

Specified by:

toArray in interface java.util.Collection

Specified by:

toArray in interface java.util.Set

Overrides:

toArray in class java.util.AbstractCollection

toArray

public java.lang.Object[] toArray(java.lang.Object[] a)

Specified by:

toArray in interface java.util.Collection

Specified by:

toArray in interface java.util.Set

Overrides:

toArray in class java.util.AbstractCollection

isLoaded

public boolean isLoaded()

loadField

protected void loadField()