Package org.datanucleus.util

Class DetachListener

java.lang.Object

org.datanucleus.util.DetachListener

public abstract class DetachListener
extends java.lang.Object

Listener hook for detachment events, as an alternative to the JDO standard process of throwing a NucleusUserException. Call setInstance() with your DetachListener and you will pick up all events.

Field Summary

Fields

Modifier and Type	Field	Description
private static DetachListener	instance

Constructor Summary

Constructors

Constructor	Description
DetachListener()

Method Summary

Modifier and Type	Method	Description
static DetachListener	getInstance()
static void	setInstance(DetachListener instance)
abstract void	undetachedFieldAccess(java.lang.Object instance, java.lang.String memberName)	Invoked when a user tries to get a non-loaded field on a detached object.

Methods inherited from class java.lang.Object

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

Field Detail

instance

private static DetachListener instance

Constructor Detail

DetachListener

public DetachListener()

Method Detail

getInstance

public static DetachListener getInstance()

setInstance

public static void setInstance(DetachListener instance)

undetachedFieldAccess

public abstract void undetachedFieldAccess(java.lang.Object instance,
                                           java.lang.String memberName)

Invoked when a user tries to get a non-loaded field on a detached object.

Parameters:

instance - of object detached

memberName - name of field/property that has been read.