org.eclipse.scada.core.subscription

Class Subscription

java.lang.Object

org.eclipse.scada.core.subscription.Subscription

public class Subscription
extends Object

Constructor Summary

Constructors

Constructor and Description
Subscription(Object topic)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	isEmpty() Check if the subscription is empty or nor.
boolean	isGranted() Check if the subscription is in granted state.
void	setSource(SubscriptionSource source)
void	subscribe(SubscriptionListener listener, Object hint)
void	unsubscribe(SubscriptionListener listener)

Methods inherited from class java.lang.Object

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

Constructor Detail

Subscription

public Subscription(Object topic)

Method Detail

isEmpty

public boolean isEmpty()

Check if the subscription is empty or nor. A subscription is empty if it neither has a subscription source set nor listeners attached to it.

Returns:

true if the subscription is empty, false otherwise

isGranted

public boolean isGranted()

Check if the subscription is in granted state. This means that no source is connected but there are listeners attached.

Returns:

true if the subscription is in granted state, false otherwise

subscribe

public void subscribe(SubscriptionListener listener,
             Object hint)

unsubscribe

public void unsubscribe(SubscriptionListener listener)

setSource

public void setSource(SubscriptionSource source)