Package com.reallifedeveloper.common.application.notification

Class NotificationService

java.lang.Object

com.reallifedeveloper.common.application.notification.NotificationService

public class NotificationService
extends Object

An application service to work with NotificationLogs.

Author:

RealLifeDeveloper

Constructor Summary

Constructors

Constructor	Description
NotificationService(EventStore eventStore, PublishedMessageTrackerRepository messageTrackerRepository, NotificationPublisher notificationPublisher)	Creates a new NotificationService that uses the given components.

Method Summary

Modifier and Type	Method	Description
NotificationLog	currentNotificationLog(int batchSize)	Gives a NotificationLog containing the most recent Notifications.
protected final void	finalize()	Deprecated.
NotificationLog	notificationLog(NotificationLogId notificationLogId)	Gives an archived NotificationLog.
void	publishNotifications(String publicationChannel)	Publishes notifications about all events that have occurred since the last publication to the given publication channel.

Methods inherited from class java.lang.Object

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

Constructor Details

NotificationService

public NotificationService(EventStore eventStore,
 PublishedMessageTrackerRepository messageTrackerRepository,
 NotificationPublisher notificationPublisher)

Creates a new NotificationService that uses the given components.

Parameters:

eventStore - an event store for finding stored domain events

messageTrackerRepository - a repository for keeping track of the last notification published

notificationPublisher - a publisher of notifications to external systems

Throws:

IllegalArgumentException - if any argument is null

Method Details

currentNotificationLog

@Transactional(readOnly=true)
public NotificationLog currentNotificationLog(int batchSize)

Gives a NotificationLog containing the most recent Notifications.

Parameters:

batchSize - the maximum number of notifications in the notification log

Returns:

a notification log with the most recent notifications

notificationLog

@Transactional(readOnly=true)
public NotificationLog notificationLog(NotificationLogId notificationLogId)

Gives an archived NotificationLog.

Parameters:

notificationLogId - represents the first and last Notification in the log

Returns:

an archived NotificationLog

publishNotifications

@Transactional
public void publishNotifications(String publicationChannel)
                          throws IOException

Publishes notifications about all events that have occurred since the last publication to the given publication channel.

Parameters:

publicationChannel - the name of the publication channel to publish notifications on

Throws:

IOException - if publishing failed

finalize

@Deprecated
protected final void finalize()
                       throws Throwable

Deprecated.

Make finalize method final to avoid "Finalizer attacks" and corresponding SpotBugs warning (CT_CONSTRUCTOR_THROW).

Overrides:

finalize in class Object

Throws:

Throwable

See Also:

• Explanation of finalizer attack