net.ontopia.persistence.proxy

Class TrackableLazySet<E>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractSet<E>

java.util.HashSet<E>

net.ontopia.persistence.proxy.TrackableLazySet<E>

All Implemented Interfaces:

Serializable, Cloneable, Iterable<E>, Collection<E>, Set<E>, TrackableCollectionIF<E>

public class TrackableLazySet<E>
extends HashSet<E>
implements TrackableCollectionIF<E>

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

Fields

Modifier and Type	Field and Description
protected Set<E>	added
protected int	field
protected IdentityIF	identity
protected boolean	loaded
protected Set<E>	removed
protected TransactionIF	txn

Constructor Summary

Constructors

Constructor and Description
TrackableLazySet(TransactionIF txn, IdentityIF identity, int field)

Method Summary

Modifier and Type	Method and Description
boolean	add(E o)
boolean	addAll(Collection<? extends E> c)
boolean	addWithTracking(E _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(Object o)
boolean	containsAll(Collection<?> c)
void	dump()
boolean	equals(Object o)
Collection<E>	getAdded() INTERNAL: Gets the objects that have been added to the set.
Collection<E>	getRemoved() INTERNAL: Gets the objects that have been removed from the set.
int	hashCode()
boolean	isEmpty()
boolean	isLoaded()
Iterator<E>	iterator()
protected void	loadField()
boolean	remove(Object o)
boolean	removeAll(Collection<?> c)
boolean	removeWithTracking(E _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(Collection<?> c)
void	selfAdded() INTERNAL: Consider existing collection elements as having just been added.
int	size()
Spliterator<E>	spliterator()
Object[]	toArray()
<T> T[]	toArray(T[] 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

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Field Detail

txn

protected TransactionIF txn

identity

protected IdentityIF identity

field

protected int field

loaded

protected boolean loaded

added

protected Set<E> added

removed

protected Set<E> 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<E>

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<E>

getAdded

public Collection<E> 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<E>

getRemoved

public Collection<E> 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<E>

addWithTracking

public boolean addWithTracking(E _o)

Description copied from interface: TrackableCollectionIF

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

Specified by:

addWithTracking in interface TrackableCollectionIF<E>

removeWithTracking

public boolean removeWithTracking(E _o)

Description copied from interface: TrackableCollectionIF

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

Specified by:

removeWithTracking in interface TrackableCollectionIF<E>

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<E>

clear

public void clear()

Specified by:

clear in interface Collection<E>

Specified by:

clear in interface Set<E>

Overrides:

clear in class HashSet<E>

add

public boolean add(E o)

Specified by:

add in interface Collection<E>

Specified by:

add in interface Set<E>

Overrides:

add in class HashSet<E>

addAll

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

Specified by:

addAll in interface Collection<E>

Specified by:

addAll in interface Set<E>

Overrides:

addAll in class AbstractCollection<E>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<E>

Specified by:

remove in interface Set<E>

Overrides:

remove in class HashSet<E>

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<E>

Specified by:

removeAll in interface Set<E>

Overrides:

removeAll in class AbstractSet<E>

retainAll

public boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<E>

Specified by:

retainAll in interface Set<E>

Overrides:

retainAll in class AbstractCollection<E>

iterator

public Iterator<E> iterator()

Specified by:

iterator in interface Iterable<E>

Specified by:

iterator in interface Collection<E>

Specified by:

iterator in interface Set<E>

Overrides:

iterator in class HashSet<E>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<E>

Specified by:

contains in interface Set<E>

Overrides:

contains in class HashSet<E>

containsAll

public boolean containsAll(Collection<?> c)

Specified by:

containsAll in interface Collection<E>

Specified by:

containsAll in interface Set<E>

Overrides:

containsAll in class AbstractCollection<E>

equals

public boolean equals(Object o)

Specified by:

equals in interface Collection<E>

Specified by:

equals in interface Set<E>

Overrides:

equals in class AbstractSet<E>

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<E>

Specified by:

hashCode in interface Set<E>

Overrides:

hashCode in class AbstractSet<E>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<E>

Specified by:

isEmpty in interface Set<E>

Overrides:

isEmpty in class HashSet<E>

size

public int size()

Specified by:

size in interface Collection<E>

Specified by:

size in interface Set<E>

Overrides:

size in class HashSet<E>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<E>

Specified by:

toArray in interface Set<E>

Overrides:

toArray in class AbstractCollection<E>

toArray

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

Specified by:

toArray in interface Collection<E>

Specified by:

toArray in interface Set<E>

Overrides:

toArray in class AbstractCollection<E>

isLoaded

public boolean isLoaded()

loadField

protected void loadField()

spliterator

public Spliterator<E> spliterator()

Specified by:

spliterator in interface Iterable<E>

Specified by:

spliterator in interface Collection<E>

Specified by:

spliterator in interface Set<E>

Overrides:

spliterator in class HashSet<E>