oracle.adfmf.java.beans

Class PropertyChangeEvent

Object

java.util.EventObject

oracle.adfmf.java.beans.PropertyChangeEvent

All Implemented Interfaces:

java.io.Serializable, Comparable

public class PropertyChangeEvent
extends java.util.EventObject
implements Comparable

A "PropertyChange" event gets delivered whenever a bean changes a "bound" or "constrained" property. A PropertyChangeEvent object is sent as an argument to the PropertyChangeListener and VetoableChangeListener methods.

Normally PropertyChangeEvents are accompanied by the name and the old and new value of the changed property. If the new value is a primitive type (such as int or boolean) it must be wrapped as the corresponding java.lang.* Object type (such as Integer or Boolean).

Null values may be provided for the old and the new values if their true values are not known.

An event source may send a null object as the name to indicate that an arbitrary set of if its properties have changed. In this case the old and new values should also be null.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PropertyChangeEvent(Object source, String propertyName, boolean oldValue, boolean newValue) Constructs a new PropertyChangeEvent.
PropertyChangeEvent(Object source, String propertyName, byte oldValue, byte newValue) Constructs a new PropertyChangeEvent.
PropertyChangeEvent(Object source, String propertyName, char oldValue, char newValue) Constructs a new PropertyChangeEvent.
PropertyChangeEvent(Object source, String propertyName, double oldValue, double newValue) Constructs a new PropertyChangeEvent.
PropertyChangeEvent(Object source, String propertyName, float oldValue, float newValue) Constructs a new PropertyChangeEvent.
PropertyChangeEvent(Object source, String propertyName, int oldValue, int newValue) Constructs a new PropertyChangeEvent.
PropertyChangeEvent(Object source, String propertyName, long oldValue, long newValue) Constructs a new PropertyChangeEvent.
PropertyChangeEvent(Object source, String propertyName, Object oldValue, Object newValue) Constructs a new PropertyChangeEvent.
PropertyChangeEvent(Object source, String propertyName, Object oldValue, Object newValue, long timestamp) Constructs a new PropertyChangeEvent.
PropertyChangeEvent(Object source, String propertyName, short oldValue, short newValue) Constructs a new PropertyChangeEvent.

Method Summary

Modifier and Type	Method and Description
int	compareTo(Object o) Used to compare the two property change events for the purpose of generation time.
Object	getNewValue() Sets the new value for the property, expressed as an Object.
Object	getOldValue() Gets the old value for the property, expressed as an Object.
String	getPropertyName() Gets the programmatic name of the property that was changed.
long	getTimestamp() Gets the create timestamp.
String	toString() Generate a simple string representation of the event.

Methods inherited from class java.util.EventObject

getSource

Methods inherited from class Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

PropertyChangeEvent

public PropertyChangeEvent(Object source,
                           String propertyName,
                           boolean oldValue,
                           boolean newValue)

Constructs a new PropertyChangeEvent.

Parameters:

source - The bean that fired the event.

propertyName - The programmatic name of the property that was changed.

oldValue - The old value of the property.

newValue - The new value of the property.

PropertyChangeEvent

public PropertyChangeEvent(Object source,
                           String propertyName,
                           int oldValue,
                           int newValue)

Constructs a new PropertyChangeEvent.

Parameters:

source - The bean that fired the event.

propertyName - The programmatic name of the property that was changed.

oldValue - The old value of the property.

newValue - The new value of the property.

PropertyChangeEvent

public PropertyChangeEvent(Object source,
                           String propertyName,
                           long oldValue,
                           long newValue)

Constructs a new PropertyChangeEvent.

Parameters:

source - The bean that fired the event.

propertyName - The programmatic name of the property that was changed.

oldValue - The old value of the property.

newValue - The new value of the property.

PropertyChangeEvent

public PropertyChangeEvent(Object source,
                           String propertyName,
                           short oldValue,
                           short newValue)

Constructs a new PropertyChangeEvent.

Parameters:

source - The bean that fired the event.

propertyName - The programmatic name of the property that was changed.

oldValue - The old value of the property.

newValue - The new value of the property.

PropertyChangeEvent

public PropertyChangeEvent(Object source,
                           String propertyName,
                           float oldValue,
                           float newValue)

Constructs a new PropertyChangeEvent.

Parameters:

source - The bean that fired the event.

propertyName - The programmatic name of the property that was changed.

oldValue - The old value of the property.

newValue - The new value of the property.

PropertyChangeEvent

public PropertyChangeEvent(Object source,
                           String propertyName,
                           double oldValue,
                           double newValue)

Constructs a new PropertyChangeEvent.

Parameters:

source - The bean that fired the event.

propertyName - The programmatic name of the property that was changed.

oldValue - The old value of the property.

newValue - The new value of the property.

PropertyChangeEvent

public PropertyChangeEvent(Object source,
                           String propertyName,
                           char oldValue,
                           char newValue)

Constructs a new PropertyChangeEvent.

Parameters:

source - The bean that fired the event.

propertyName - The programmatic name of the property that was changed.

oldValue - The old value of the property.

newValue - The new value of the property.

PropertyChangeEvent

public PropertyChangeEvent(Object source,
                           String propertyName,
                           byte oldValue,
                           byte newValue)

Constructs a new PropertyChangeEvent.

Parameters:

source - The bean that fired the event.

propertyName - The programmatic name of the property that was changed.

oldValue - The old value of the property.

newValue - The new value of the property.

PropertyChangeEvent

public PropertyChangeEvent(Object source,
                           String propertyName,
                           Object oldValue,
                           Object newValue)

Constructs a new PropertyChangeEvent.

Parameters:

source - The bean that fired the event.

propertyName - The programmatic name of the property that was changed.

oldValue - The old value of the property.

newValue - The new value of the property.

PropertyChangeEvent

public PropertyChangeEvent(Object source,
                           String propertyName,
                           Object oldValue,
                           Object newValue,
                           long timestamp)

Constructs a new PropertyChangeEvent.

Parameters:

source - The bean that fired the event.

propertyName - The programmatic name of the property that was changed.

oldValue - The old value of the property.

newValue - The new value of the property.

timestamp - The timestamp associated with the creations

Method Detail

getPropertyName

public String getPropertyName()

Gets the programmatic name of the property that was changed.

Returns:

The programmatic name of the property that was changed. May be null if multiple properties have changed.

getNewValue

public Object getNewValue()

Sets the new value for the property, expressed as an Object.

Returns:

The new value for the property, expressed as an Object. May be null if multiple properties have changed.

getOldValue

public Object getOldValue()

Gets the old value for the property, expressed as an Object.

Returns:

The old value for the property, expressed as an Object. May be null if multiple properties have changed.

getTimestamp

public long getTimestamp()

Gets the create timestamp.

Returns:

The event timestamp

compareTo

public int compareTo(Object o)

Used to compare the two property change events for the purpose of generation time. Internal method.

Specified by:

compareTo in interface Comparable

toString

public String toString()

Generate a simple string representation of the event.

Overrides:

toString in class java.util.EventObject