org.apache.ojb.broker.util.collections
Class RemovalAwareSet

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractSet<E>
          java.util.HashSet
              org.apache.ojb.broker.util.collections.ManageableHashSet
                  org.apache.ojb.broker.util.collections.RemovalAwareSet

All Implemented Interfaces:

Serializable, Cloneable, Iterable, Collection, Set, ManageableCollection, IRemovalAwareCollection

public class RemovalAwareSet
extends ManageableHashSet
implements IRemovalAwareCollection

This is a set implementation that tracks removal and addition of elements. This tracking allow the PersistenceBroker to delete elements from the database that have been removed from the collection before a PB.store() orperation occurs. This will allow to use the PB api in way pretty close to ODMG persistent collections!

Version:

$Id: RemovalAwareSet.java,v 1.1 2007-08-24 22:17:39 ewestfal Exp $

Author:

Thomas Dudziak

See Also:

Serialized Form

Constructor Summary

RemovalAwareSet()

Method Summary

void	afterStore(PersistenceBroker broker) A callback method to implement 'removal-aware' (track removed objects and delete them by its own) collection implementations.
void	clear()
protected void	registerForDeletion(Object toBeRemoved)
boolean	remove(Object o)
void	removeAllElements()
void	resetDeleted()

Methods inherited from class org.apache.ojb.broker.util.collections.ManageableHashSet

ojbAdd, ojbAddAll, ojbIterator

Methods inherited from class java.util.HashSet

add, clone, contains, isEmpty, iterator, size

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

addAll, containsAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Set

addAll, containsAll, equals, hashCode, removeAll, retainAll, toArray, toArray

Constructor Detail

RemovalAwareSet

public RemovalAwareSet()

Method Detail

afterStore

public void afterStore(PersistenceBroker broker)
                throws PersistenceBrokerException

Description copied from interface: ManageableCollection

A callback method to implement 'removal-aware' (track removed objects and delete them by its own) collection implementations.

Specified by:

afterStore in interface ManageableCollection

Overrides:

afterStore in class ManageableHashSet

Parameters:

broker - The persistence broker

Throws:

PersistenceBrokerException

See Also:

ManageableCollection.afterStore(PersistenceBroker broker)

registerForDeletion

protected void registerForDeletion(Object toBeRemoved)

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection

Specified by:

remove in interface Set

Overrides:

remove in class HashSet

See Also:

Collection.remove(Object)

removeAllElements

public void removeAllElements()

See Also:

Vector.removeAllElements()

clear

public void clear()

Specified by:

clear in interface Collection

Specified by:

clear in interface Set

Overrides:

clear in class HashSet

resetDeleted

public void resetDeleted()