Module ch.rasc.sse.eventbus

Package ch.rasc.sse.eventbus

Class DefaultSubscriptionRegistry

java.lang.Object

ch.rasc.sse.eventbus.DefaultSubscriptionRegistry

All Implemented Interfaces:

SubscriptionRegistry

public class DefaultSubscriptionRegistry
extends Object
implements SubscriptionRegistry

Constructor Summary

Constructors

Constructor	Description
DefaultSubscriptionRegistry()

Method Summary

Modifier and Type	Method	Description
int	countSubscribers(String event)	Get the number of subscribers to a particular event
Set<String>	getAllEvents()	Get a collection of all registered events
Map<String,Set<String>>	getAllSubscriptions()	Get a map that maps events to a collection of clientIds
protected ConcurrentMap<String,Set<String>>	getEventSubscribers()
Set<String>	getSubscribers(String event)	Get all subscribers to a particular event
boolean	hasSubscribers(String event)	Check if a particular event has subscribers
boolean	isClientSubscribedToEvent(String clientId, String eventName)
void	subscribe(String clientId, String event)
void	unsubscribe(String clientId, String event)

Methods inherited from class java.lang.Object

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

Constructor Details

DefaultSubscriptionRegistry

public DefaultSubscriptionRegistry()

Method Details

getEventSubscribers

protected ConcurrentMap<String,Set<String>> getEventSubscribers()

subscribe

public void subscribe(String clientId,
 String event)

Specified by:

subscribe in interface SubscriptionRegistry

unsubscribe

public void unsubscribe(String clientId,
 String event)

Specified by:

unsubscribe in interface SubscriptionRegistry

isClientSubscribedToEvent

public boolean isClientSubscribedToEvent(String clientId,
 String eventName)

Specified by:

isClientSubscribedToEvent in interface SubscriptionRegistry

getAllEvents

public Set<String> getAllEvents()

Description copied from interface: SubscriptionRegistry

Get a collection of all registered events

Specified by:

getAllEvents in interface SubscriptionRegistry

Returns:

an unmodifiable set of all events

getAllSubscriptions

public Map<String,Set<String>> getAllSubscriptions()

Description copied from interface: SubscriptionRegistry

Get a map that maps events to a collection of clientIds

Specified by:

getAllSubscriptions in interface SubscriptionRegistry

Returns:

map with the event as key, the value is a set of clientIds

getSubscribers

public Set<String> getSubscribers(String event)

Description copied from interface: SubscriptionRegistry

Get all subscribers to a particular event

Specified by:

getSubscribers in interface SubscriptionRegistry

Returns:

an unmodifiable set of all subscribed clientIds to this event. Empty when nobody is subscribed

countSubscribers

public int countSubscribers(String event)

Description copied from interface: SubscriptionRegistry

Get the number of subscribers to a particular event

Specified by:

countSubscribers in interface SubscriptionRegistry

Returns:

the number of clientIds subscribed to this event. 0 when nobody is subscribed

hasSubscribers

public boolean hasSubscribers(String event)

Description copied from interface: SubscriptionRegistry

Check if a particular event has subscribers

Specified by:

hasSubscribers in interface SubscriptionRegistry

Returns:

true when the event has 1 or more subscribers.