Module dk.cloudcreate.essentials.components.foundation

Package dk.cloudcreate.essentials.components.foundation.postgresql

Class MultiTableChangeListener<T extends TableChangeNotification>

java.lang.Object

dk.cloudcreate.essentials.components.foundation.postgresql.MultiTableChangeListener<T>

All Implemented Interfaces:

Closeable, AutoCloseable

public class MultiTableChangeListener<T extends TableChangeNotification>
extends Object
implements Closeable

Variant of ListenNotify.listen(Jdbi, String, Duration) that allows you to listen for notifications from multiple tables using a single polling thread

Constructor Summary

Constructors

Constructor	Description
MultiTableChangeListener(org.jdbi.v3.core.Jdbi jdbi, Duration pollingInterval, com.fasterxml.jackson.databind.ObjectMapper objectMapper, EventBus eventBus)

Method Summary

Modifier and Type	Method	Description
void	close()
EventBus	getEventBus()
MultiTableChangeListener	listenToNotificationsFor(String tableName, Class<? extends T> tableNotificationType)	Start listening for notifications related to changes to the given table Note: Remember to install the notification support, using ListenNotify.addChangeNotificationTriggerToTable(Handle, String, List, String...), prior to using this method
MultiTableChangeListener	unlistenToNotificationsFor(String tableName)	Stop listening for notifications related to changes to the given table

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiTableChangeListener

public MultiTableChangeListener(org.jdbi.v3.core.Jdbi jdbi,
                                Duration pollingInterval,
                                com.fasterxml.jackson.databind.ObjectMapper objectMapper,
                                EventBus eventBus)

Method Detail

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

getEventBus

public EventBus getEventBus()

listenToNotificationsFor

public MultiTableChangeListener listenToNotificationsFor(String tableName,
                                                         Class<? extends T> tableNotificationType)

Start listening for notifications related to changes to the given table
Note: Remember to install the notification support, using ListenNotify.addChangeNotificationTriggerToTable(Handle, String, List, String...), prior to using this method

Parameters:

tableName - the name of the table to listen to TableChangeNotification's

tableNotificationType - the concrete type of TableChangeNotification that each ListenNotify.SqlOperation related change will result in

Returns:

this listener instance

unlistenToNotificationsFor

public MultiTableChangeListener unlistenToNotificationsFor(String tableName)

Stop listening for notifications related to changes to the given table

Parameters:

tableName - the name of the table to stop listen for TableChangeNotification's to

Returns:

this listener instance