org.neo4j.helpers

Class Listeners<T>

java.lang.Object

org.neo4j.helpers.Listeners<T>

Type Parameters:

T - the type of listeners.

All Implemented Interfaces:

Iterable<T>

public class Listeners<T>
extends Object
implements Iterable<T>

Mutable thread-safe container of listeners that can be notified with Listeners.Notification.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Listeners.Notification<T>

Constructor Summary

Constructors

Constructor and Description
Listeners() Construct new empty listeners;
Listeners(Listeners<T> other) Construct a copy of the given listeners.

Method Summary

Modifier and Type	Method and Description
void	add(T listener) Adds the specified listener to this container.
Iterator<T>	iterator() Returns the iterator over listeners in this container in the order they were added.
void	notify(Executor executor, Listeners.Notification<T> notification) Notify all listeners in this container with the given notification using the given executor.
void	notify(Listeners.Notification<T> notification) Notify all listeners in this container with the given notification.
void	remove(T listener) Remove the first occurrence of the specified listener from this container, if it is present.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

Listeners

public Listeners()

Construct new empty listeners;

Listeners

public Listeners(Listeners<T> other)

Construct a copy of the given listeners.

Parameters:

other - listeners to copy.

Method Detail

add

public void add(T listener)

Adds the specified listener to this container.

Parameters:

listener - the listener to add.

remove

public void remove(T listener)

Remove the first occurrence of the specified listener from this container, if it is present.

Parameters:

listener - the listener to remove.

notify

public void notify(Listeners.Notification<T> notification)

Notify all listeners in this container with the given notification. Notification of each listener is synchronized on this listener.

Parameters:

notification - the notification to be applied to each listener.

notify

public void notify(Executor executor,
                   Listeners.Notification<T> notification)

Notify all listeners in this container with the given notification using the given executor. Each notification is submitted as a Runnable to the executor. Notification of each listener is synchronized on this listener.

Parameters:

executor - the executor to submit notifications to.

notification - the notification to be applied to each listener.

iterator

public Iterator<T> iterator()

Returns the iterator over listeners in this container in the order they were added.

The returned iterator provides a snapshot of the state of the list when the iterator was constructed. No synchronization is needed while traversing the iterator. The iterator does NOT support the remove method.

Specified by:

iterator in interface Iterable<T>

Returns:

iterator over listeners.