org.jconfig.event
Interface PropertyChangedEvent

All Known Subinterfaces:

CategoryChangedEvent, ConfigurationChangedEvent

public interface PropertyChangedEvent

Anytime a Property has changed, this event will be sent. If a Property is deleted, the getNewValue will return null. If a Property is added, the getOldValue will return null. What's trying to be said, is that the returned values should be checked for NullPointerExceptions.

 public void propertyChanged( PropertyChangedEvent event ) { 
 	if( event.getEventType() == PROPERTY_ADDED ) {
		System.out.println("Property was added");
  	System.out.println("Name: " + event.getPropertyName());
 	}
 }
 

Since:

2.2

Author:

Andreas Mecky , Terry Dye

Field Summary

static int	CATEGORY_ADDED constant representing an added category event
static int	CATEGORY_CHANGED constant representing a changed category event
static int	CATEGORY_REMOVED constant representing a removed category event
static int	PROPERTY_ADDED constant representing an added property event
static int	PROPERTY_CHANGED constant representing a changed property event
static int	PROPERTY_REMOVED constant representing a removed property event

Method Summary

int	getEventType() Information about the event.
java.lang.String	getNewValue() The new value of the Property.
java.lang.String	getOldValue() The old value of the Property.
java.lang.String	getPropertyName() The name of the Property that has changed.

Field Detail

PROPERTY_ADDED

public static final int PROPERTY_ADDED

constant representing an added property event

PROPERTY_REMOVED

public static final int PROPERTY_REMOVED

constant representing a removed property event

PROPERTY_CHANGED

public static final int PROPERTY_CHANGED

constant representing a changed property event

CATEGORY_ADDED

public static final int CATEGORY_ADDED

constant representing an added category event

CATEGORY_REMOVED

public static final int CATEGORY_REMOVED

constant representing a removed category event

CATEGORY_CHANGED

public static final int CATEGORY_CHANGED

constant representing a changed category event

Method Detail

getPropertyName

public java.lang.String getPropertyName()

The name of the Property that has changed.

Returns:

The Property's name

getOldValue

public java.lang.String getOldValue()

The old value of the Property. Can be <null>, if a Property was added.

Returns:

The old value

getNewValue

public java.lang.String getNewValue()

The new value of the Property. Can be <null>, if a Property was deleted.

Returns:

The new value

getEventType

public int getEventType()

Information about the event.

Returns:

The event's identifier/type

See Also:

PROPERTY_ADDED, PROPERTY_REMOVED, CATEGORY_ADDED, CATEGORY_REMOVED