WebLogic Server 5.1.0 API Reference

weblogic.common
Interface DestroyMonitor

public interface DestroyMonitor

extends MonitorDef

Used to monitor modifications to a Destroyable object in the WebLogic Server. Implement methods in this interface create a monitor that can operate on a target object before or after a call to its destroy method takes place.

Author:

Copyright (c) 1997-98 by WebLogic, Inc. All Rights Reserved., Copyright (c) 1999 by BEA WebXpress. All Rights Reserved.
Copyright © 2000 BEA Systems, Inc. All Rights Reserved.

See Also:

Destroyable

Method Summary

void	postDestroy(Destroyable target, ParamSet callbackData, java.lang.Exception e) Called after the target object has been destroyed.
void	preDestroy(Destroyable target, ParamSet callbackData) Called prior to destroying the target object.

Methods inherited from interface weblogic.common.MonitorDef

monitorInit, setServices

Method Detail

preDestroy

public void preDestroy(Destroyable target,
                       ParamSet callbackData)
                throws MonitorException

Called prior to destroying the target object. Implement this method to perform a task on a Destroyable object before it is destroyed.

Parameters:

target - Object about to be destroyed

callbackData - User-supplied callback data

Throws:

MonitorException - if the operation is blocked

postDestroy

public void postDestroy(Destroyable target,
                        ParamSet callbackData,
                        java.lang.Exception e)

Called after the target object has been destroyed. Implement this method to perform a task after the destruction of a Destroyable object.

The argument "e" passed to this method is an exception that occurred during the call to preDestroy(), or an exception from performing the operation itself. If this argument is null, then the preDestroy operation occurred; if it is non-null, the preDestroy operation did not occur.

Parameters:

target - Destroyable destroyed object

callbackData - User-supplied callback data

e - An exception that occurred during the preDestroy