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## javax.jdo.listener
Class InstanceLifecycleEvent

    java.lang.Object
      java.util.EventObject
          javax.jdo.listener.InstanceLifecycleEvent

All Implemented Interfaces:
  java.io.Serializable

    public class InstanceLifecycleEvent

extends java.util.EventObject

This is the event class used in life cycle event notifications.

Note that although InstanceLifecycleEvent inherits Serializable interface from EventObject, it is not intended to be Serializable. Appropriate serialization methods are implemented to throw NotSerializableException.

Since:
  2.0
Version:
  2.0
See Also:
  Serialized Form

Field Summary
`static int` | `ATTACH`
`static int` | `CLEAR`
`static int` | `CREATE`
`static int` | `DELETE`
`static int` | `DETACH`
`static int` | `DIRTY`
`static int` | `LOAD`
`static int` | `STORE`

Fields inherited from class java.util.EventObject
`source`

Constructor Summary
`InstanceLifecycleEvent(java.lang.Object source, int type)` Creates a new event object with the specified `source` and `type`.
`InstanceLifecycleEvent(java.lang.Object source, int type, java.lang.Object target)` Creates a new event object with the specified `source`, `type`, and `target`.

Method Summary
`java.lang.Object` | `getDetachedInstance()` Returns the detached instance involved in the event.
`int` | `getEventType()` Returns the event type that triggered this event.
`java.lang.Object` | `getPersistentInstance()` Returns the persistent instance involved in the event.
`java.lang.Object` | `getSource()` The source object of the Event.
`java.lang.Object` | `getTarget()` The target object of the Event.

Methods inherited from class java.util.EventObject
`toString`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Field Detail

### CREATE

    public static final int CREATE

See Also:
  Constant Field Values

### LOAD

    public static final int LOAD

See Also:
  Constant Field Values

### STORE

    public static final int STORE

See Also:
  Constant Field Values

### CLEAR

    public static final int CLEAR

See Also:
  Constant Field Values

### DELETE

    public static final int DELETE

See Also:
  Constant Field Values

### DIRTY

    public static final int DIRTY

See Also:
  Constant Field Values

### DETACH

    public static final int DETACH

See Also:
  Constant Field Values

### ATTACH

    public static final int ATTACH

See Also:
  Constant Field Values

Constructor Detail

### InstanceLifecycleEvent

    public InstanceLifecycleEvent(java.lang.Object source,
                                  int type)

  Creates a new event object with the specified `source` and `type`.

  Parameters:
    `source` - the instance that triggered the event
    `type` - the event type
  Since:
    2.0

### InstanceLifecycleEvent

    public InstanceLifecycleEvent(java.lang.Object source,
                                  int type,
                                  java.lang.Object target)

  Creates a new event object with the specified `source`, `type`, and `target`.

  Parameters:
    `source` - the instance that triggered the event
    `type` - the event type
    `target` - the "other" instance
  Since:
    2.0

Method Detail

### getEventType

    public int getEventType()

  Returns the event type that triggered this event.

  Returns:
    the event type
  Since:
    2.0

### getSource

    public java.lang.Object getSource()

  The source object of the Event. Although not deprecated, it is recommended that the the methods `getPersistentInstance()` and `getDetachedInstance()` be used instead.

  Overrides:
    `getSource` in class `java.util.EventObject`
  Returns:
    The persistent instance on any pre- callback except preAttach, or the detached instance for a postDetach or preAttach callback.
  See Also:
    `getPersistentInstance()`, `getDetachedInstance()`, "Section 12.15, Java Data Objects 2.0 Specification"

### getTarget

    public java.lang.Object getTarget()

  The target object of the Event. Although not deprecated, it is recommended that the the methods `getPersistentInstance()` and `getDetachedInstance()` be used instead.

  Returns:
    The detached instance for preDetach and postAttach, the persistent instance otherwise.
  Since:
    2.0
  See Also:
    `getPersistentInstance()`, `getDetachedInstance()`, "Section 12.15, Java Data Objects 2.0 Specification"

### getPersistentInstance

    public java.lang.Object getPersistentInstance()

  Returns the persistent instance involved in the event.

  Returns:
    The persistent instance involved in the event, or null if there was none.
  See Also:
    "Section 12.15, Java Data Objects 2.0 Specification"

### getDetachedInstance

    public java.lang.Object getDetachedInstance()

  Returns the detached instance involved in the event.

  Returns:
    The detached instance involved in the event, or null if there was none.
  See Also:
    "Section 12.15, Java Data Objects 2.0 Specification"

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