org.eclipse.persistence.descriptors.changetracking
Class CollectionChangeEvent

java.lang.Object
  java.util.EventObject
      java.beans.PropertyChangeEvent
          org.eclipse.persistence.descriptors.changetracking.CollectionChangeEvent

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

MapChangeEvent

public class CollectionChangeEvent
extends java.beans.PropertyChangeEvent

Purpose: Define a change event for collection types.

Description: For any object that wishes to use either object change tracking or attribute change tracking, its collection attributes need to fire CollectionChangeEvent in the add or remove methods.

Responsibilities: Create a CollectionChangeEvent for an object

See Also:

Serialized Form

Field Summary

static int	ADD
protected int	changeType INTERNAL: Change type is either add or remove
protected java.lang.Integer	index INTERNAL: index is the location of the change in the collection
protected boolean	isSet INTERNAL: Set operation in IndirectList results in raising two events: removal of the old value and addition of the new one at the same index: oldValue = list.set(i, newValue); raiseRemoveEvent(i, oldValue, true); raiseAddEvent(i, newValue, true); This flag indicates whether the event was raised by set operation on the list.
static int	REMOVE

Fields inherited from class java.util.EventObject

source

Constructor Summary

CollectionChangeEvent(java.lang.Object collectionOwner, java.lang.String propertyName, java.lang.Object collectionChanged, java.lang.Object elementChanged, int changeType)
PUBLIC: Create a CollectionChangeEvent for an object based on the property name, old value, new value and change type (add or remove)

CollectionChangeEvent(java.lang.Object collectionOwner, java.lang.String propertyName, java.lang.Object collectionChanged, java.lang.Object elementChanged, int changeType, java.lang.Integer index)
PUBLIC: Create a CollectionChangeEvent for an object based on the property name, old value, new value, change type (add or remove) and the index where the object is/was in the collection (list)

CollectionChangeEvent(java.lang.Object collectionOwner, java.lang.String propertyName, java.lang.Object collectionChanged, java.lang.Object elementChanged, int changeType, java.lang.Integer index, boolean isSet)
PUBLIC: Create a CollectionChangeEvent for an object based on the property name, old value, new value, change type (add or remove) and the index where the object is/was in the collection (list), flag indicating whether the change (addition or removal) is part of a single set operation on a list.

Method Summary

int	getChangeType() INTERNAL: Return the change type
java.lang.Integer	getIndex() INTERNAL: Return the index of the change in the collection
boolean	isSet() INTERNAL: Return whether the event was raised by set operation on the list.
void	setIndex(java.lang.Integer index) INTERNAL: Set the index of the change in the collection

Methods inherited from class java.beans.PropertyChangeEvent

getNewValue, getOldValue, getPropagationId, getPropertyName, setPropagationId

Methods inherited from class java.util.EventObject

getSource, toString

Methods inherited from class java.lang.Object

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

Field Detail

ADD

public static int ADD

REMOVE

public static int REMOVE

changeType

protected int changeType

INTERNAL: Change type is either add or remove

index

protected java.lang.Integer index

INTERNAL: index is the location of the change in the collection

isSet

protected boolean isSet

INTERNAL: Set operation in IndirectList results in raising two events: removal of the old value and addition of the new one at the same index: oldValue = list.set(i, newValue); raiseRemoveEvent(i, oldValue, true); raiseAddEvent(i, newValue, true); This flag indicates whether the event was raised by set operation on the list.

Constructor Detail

CollectionChangeEvent

public CollectionChangeEvent(java.lang.Object collectionOwner,
                             java.lang.String propertyName,
                             java.lang.Object collectionChanged,
                             java.lang.Object elementChanged,
                             int changeType)

PUBLIC: Create a CollectionChangeEvent for an object based on the property name, old value, new value and change type (add or remove)

CollectionChangeEvent

public CollectionChangeEvent(java.lang.Object collectionOwner,
                             java.lang.String propertyName,
                             java.lang.Object collectionChanged,
                             java.lang.Object elementChanged,
                             int changeType,
                             java.lang.Integer index)

PUBLIC: Create a CollectionChangeEvent for an object based on the property name, old value, new value, change type (add or remove) and the index where the object is/was in the collection (list)

CollectionChangeEvent

public CollectionChangeEvent(java.lang.Object collectionOwner,
                             java.lang.String propertyName,
                             java.lang.Object collectionChanged,
                             java.lang.Object elementChanged,
                             int changeType,
                             java.lang.Integer index,
                             boolean isSet)

PUBLIC: Create a CollectionChangeEvent for an object based on the property name, old value, new value, change type (add or remove) and the index where the object is/was in the collection (list), flag indicating whether the change (addition or removal) is part of a single set operation on a list.

Method Detail

getChangeType

public int getChangeType()

INTERNAL: Return the change type

isSet

public boolean isSet()

INTERNAL: Return whether the event was raised by set operation on the list.

getIndex

public java.lang.Integer getIndex()

INTERNAL: Return the index of the change in the collection

setIndex

public void setIndex(java.lang.Integer index)

INTERNAL: Set the index of the change in the collection