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

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractList<E>
          java.util.Vector
              org.apache.ojb.broker.util.collections.ManageableVector
                  org.apache.ojb.broker.util.collections.RemovalAwareCollection

All Implemented Interfaces:

Serializable, Cloneable, Iterable, Collection, List, RandomAccess, ManageableCollection, IRemovalAwareCollection

public class RemovalAwareCollection
extends ManageableVector
implements IRemovalAwareCollection

This is a collection 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: RemovalAwareCollection.java,v 1.1 2007-08-24 22:17:39 ewestfal Exp $

Author:

Thomas Mahler

See Also:

Serialized Form

Field Summary

private Vector

allObjectsToBeRemoved

Fields inherited from class java.util.Vector

capacityIncrement, elementCount, elementData

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

RemovalAwareCollection()

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)
Object	remove(int index)
boolean	remove(Object o)
void	removeAllElements()
void	removeElementAt(int index)
protected void	removeRange(int fromIndex, int toIndex)

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

ojbAdd, ojbAddAll, ojbIterator

Methods inherited from class java.util.Vector

add, add, addAll, addAll, addElement, capacity, clone, contains, containsAll, copyInto, elementAt, elements, ensureCapacity, equals, firstElement, get, hashCode, indexOf, indexOf, insertElementAt, isEmpty, lastElement, lastIndexOf, lastIndexOf, removeAll, removeElement, retainAll, set, setElementAt, setSize, size, subList, toArray, toArray, toString, trimToSize

Methods inherited from class java.util.AbstractList

iterator, listIterator, listIterator

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.List

iterator, listIterator, listIterator

Field Detail

allObjectsToBeRemoved

private Vector allObjectsToBeRemoved

Constructor Detail

RemovalAwareCollection

public RemovalAwareCollection()

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 ManageableVector

Parameters:

broker - The persistence broker

Throws:

PersistenceBrokerException

See Also:

ManageableCollection.afterStore(PersistenceBroker broker)

remove

public Object remove(int index)

Specified by:

remove in interface List

Overrides:

remove in class Vector

See Also:

List.remove(int)

registerForDeletion

protected void registerForDeletion(Object toBeRemoved)

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection

Specified by:

remove in interface List

Overrides:

remove in class Vector

See Also:

Collection.remove(Object)

clear

public void clear()

Specified by:

clear in interface Collection

Specified by:

clear in interface List

Overrides:

clear in class Vector

See Also:

Vector.clear()

removeAllElements

public void removeAllElements()

Overrides:

removeAllElements in class Vector

See Also:

Vector.removeAllElements()

removeElementAt

public void removeElementAt(int index)

Overrides:

removeElementAt in class Vector

See Also:

Vector.removeElementAt(int)

removeRange

protected void removeRange(int fromIndex,
                           int toIndex)

Overrides:

removeRange in class Vector

See Also:

AbstractList.removeRange(int, int)