com.neurosys.user.service

Class LogonChangeListener<U extends User>

java.lang.Object

com.neurosys.user.service.LogonChangeListener<U>

All Implemented Interfaces:

ChangeListener<Object[]>, Serializable, EventListener

Direct Known Subclasses:

LogonChangeListener

public class LogonChangeListener<U extends User>
extends Object
implements ChangeListener<Object[]>

ChangeListener that updates the AdminUser's #lastLogInDate or #lastLogOutDate properties when the UserService is notified of EVENT_LOGIN and EVENT_LOGOUT .

Expected event type model for this ChangeListener is:

1. Event name - EVENT_LOGIN, EVENT_LOGOUT
2. User object

Author:

Ishan Mitra, Arjun Dhar

See Also:

getDao(ChangeGenerator), Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	EVENT_LOGIN
static String	EVENT_LOGOUT

Constructor Summary

Constructors

Constructor and Description
LogonChangeListener()

Method Summary

Modifier and Type	Method and Description
protected UserDao<U>	getDao(ChangeGenerator generator)
void	onChange(ChangeGenerator generator, Object[] event) If event type is "login" or "logout" and the user is an AdminUser, then the user is loaded up using UserDao, #lastLogInDate or #lastLogOutDate are updated and then saved.
protected void	onChange(ChangeGenerator generator, String eventName, U user) Override this method for any further customizations By default simply passes on the AdminUser.getLastLogInDate() and AdminUser.getLastLogOutDate() to the persisted entity.

Methods inherited from class java.lang.Object

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

Field Detail

EVENT_LOGIN

public static final String EVENT_LOGIN

See Also:

Constant Field Values

EVENT_LOGOUT

public static final String EVENT_LOGOUT

See Also:

Constant Field Values

Constructor Detail

LogonChangeListener

public LogonChangeListener()

Method Detail

onChange

public void onChange(ChangeGenerator generator,
                     Object[] event)

If event type is "login" or "logout" and the user is an AdminUser, then the user is loaded up using UserDao, #lastLogInDate or #lastLogOutDate are updated and then saved.

Specified by:

onChange in interface ChangeListener<Object[]>

Parameters:

generator - as the generator that caused the change. Specially useful if the Listener is subscribing to multiple ChangeGenerators

event - as the model change communicated

getDao

protected UserDao<U> getDao(ChangeGenerator generator)

Default value:

By default this Listener assumes the ChangeGenerator is UserServiceImpl

onChange

protected void onChange(ChangeGenerator generator,
                        String eventName,
                        U user)

Override this method for any further customizations

By default simply passes on the AdminUser.getLastLogInDate() and AdminUser.getLastLogOutDate() to the persisted entity.

Parameters:

generator - as ChangeGenerator

eventName - as String

user - as User type