```
public abstract class DetachListener
extends 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.

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`static DetachListener`	`getInstance()`
`static void`	`setInstance(DetachListener instance)`
`abstract void`	`undetachedFieldAccess(Object instance, String memberName)`	Invoked when a user tries to get a non-loaded field on a detached object.

public static DetachListener getInstance()

public static void setInstance(DetachListener instance)

Class DetachListener