com.suse.salt.netapi.event

Class AbstractEventStream

java.lang.Object

com.suse.salt.netapi.event.AbstractEventStream

All Implemented Interfaces:

EventStream, java.lang.AutoCloseable

Direct Known Subclasses:

WebSocketEventStream

public abstract class AbstractEventStream
extends java.lang.Object
implements EventStream

Implements basic listener bookkeeping for EventStream.

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.List<EventListener>	listeners Listeners that are notified of a new events.

Constructor Summary

Constructors

Constructor and Description
AbstractEventStream()

Method Summary

Modifier and Type	Method and Description
void	addEventListener(EventListener listener) Adds a listener.
protected void	clearListeners(int code, java.lang.String phrase) Removes all listeners.
int	getListenerCount() Helper method that returns the current number of subscribed listeners.
protected void	notifyListeners(Event event) Notifies all listeners of an event
void	removeEventListener(EventListener listener) Removes a listener.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.suse.salt.netapi.event.EventStream

close, isEventStreamClosed

Field Detail

listeners

private final java.util.List<EventListener> listeners

Listeners that are notified of a new events.

Constructor Detail

AbstractEventStream

public AbstractEventStream()

Method Detail

addEventListener

public void addEventListener(EventListener listener)

Adds a listener.

Specified by:

addEventListener in interface EventStream

Parameters:

listener - Reference to the class that implements EventListener.

removeEventListener

public void removeEventListener(EventListener listener)

Removes a listener.

Specified by:

removeEventListener in interface EventStream

Parameters:

listener - Reference to the class that implements EventListener.

getListenerCount

public int getListenerCount()

Helper method that returns the current number of subscribed listeners.

Specified by:

getListenerCount in interface EventStream

Returns:

The current number listeners.

notifyListeners

protected void notifyListeners(Event event)

Notifies all listeners of an event

Parameters:

event - the event

clearListeners

protected void clearListeners(int code,
                              java.lang.String phrase)

Removes all listeners.

Parameters:

code - an integer code to represent the reason for closing

phrase - a String representation of code