Package org.djutils.event.collection

Class EventProducingSet<E>

java.lang.Object

org.djutils.event.LocalEventProducer

org.djutils.event.collection.EventProducingSet<E>

Type Parameters:

E - the type of elements in the set

All Implemented Interfaces:

Serializable, Iterable<E>, Remote, Collection<E>, EventListener, Set<E>, EventListener, EventProducer

public class EventProducingSet<E>
extends LocalEventProducer
implements EventListener, Set<E>

The Event producing set provides a set to which one can subscribe interest in entry changes. This class does not keep track of changes which take place indirectly. One is for example not notified on map.iterator.remove(). A listener must subscribe to the iterator individually.

Copyright (c) 2002-2025 Delft University of Technology, Jaffalaan 5, 2628 BX Delft, the Netherlands. All rights reserved. See for project information https://djutils.org. The DJUTILS project is distributed under a three-clause BSD-style license, which can be found at https://djutils.org/docs/license.html. This class was originally part of the DSOL project, see https://simulation.tudelft.nl/dsol/manual.

Author:

Peter Jacobs , Alexander Verbraeck

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final EventType	OBJECT_ADDED_EVENT	OBJECT_ADDED_EVENT is fired on new entries.
static final EventType	OBJECT_CHANGED_EVENT	OBJECT_CHANGED_EVENT is fired on change of one or more entries.
static final EventType	OBJECT_REMOVED_EVENT	OBJECT_REMOVED_EVENT is fired on removal of entries.

Fields inherited from interface org.djutils.event.EventProducer

FIRST_POSITION, LAST_POSITION

Constructor Summary

Constructors

Constructor	Description
EventProducingSet(Set<E> wrappedSet)	Constructs a new EventProducingSet.

Method Summary

Modifier and Type	Method	Description
boolean	add(E o)
boolean	addAll(Collection<? extends E> c)
void	clear()
boolean	contains(Object o)
boolean	containsAll(Collection<?> c)
boolean	isEmpty()
EventProducingIterator<E>	iterator()
void	notify(Event event)	Notifies the event listener of an event.
boolean	remove(Object o)
boolean	removeAll(Collection<?> c)
boolean	retainAll(Collection<?> c)
int	size()
Object[]	toArray()
<T> T[]	toArray(T[] a)

Methods inherited from class org.djutils.event.LocalEventProducer

addListener, addListener, addListener, addListener, fireEvent, fireEvent, fireEvent, fireTimedEvent, fireTimedEvent, fireTimedEvent, fireUnverifiedEvent, fireUnverifiedEvent, fireUnverifiedTimedEvent, fireUnverifiedTimedEvent, getEventListenerMap, getEventTypesWithListeners, getListenerReferences, hasListeners, numberOfListeners, removeAllListeners, removeAllListeners, removeListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.Set

equals, hashCode, spliterator

Field Details

OBJECT_ADDED_EVENT

public static final EventType OBJECT_ADDED_EVENT

OBJECT_ADDED_EVENT is fired on new entries.

OBJECT_REMOVED_EVENT

public static final EventType OBJECT_REMOVED_EVENT

OBJECT_REMOVED_EVENT is fired on removal of entries.

OBJECT_CHANGED_EVENT

public static final EventType OBJECT_CHANGED_EVENT

OBJECT_CHANGED_EVENT is fired on change of one or more entries.

Constructor Details

EventProducingSet

public EventProducingSet(Set<E> wrappedSet)

Constructs a new EventProducingSet.

Parameters:

wrappedSet - the embedded set.

Method Details

size

public int size()

Specified by:

size in interface Collection<E>

Specified by:

size in interface Set<E>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<E>

Specified by:

isEmpty in interface Set<E>

clear

public void clear()

Specified by:

clear in interface Collection<E>

Specified by:

clear in interface Set<E>

add

public boolean add(E o)

Specified by:

add in interface Collection<E>

Specified by:

add in interface Set<E>

addAll

public boolean addAll(Collection<? extends E> c)

Specified by:

addAll in interface Collection<E>

Specified by:

addAll in interface Set<E>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<E>

Specified by:

contains in interface Set<E>

containsAll

public boolean containsAll(Collection<?> c)

Specified by:

containsAll in interface Collection<E>

Specified by:

containsAll in interface Set<E>

iterator

public EventProducingIterator<E> iterator()

Specified by:

iterator in interface Collection<E>

Specified by:

iterator in interface Iterable<E>

Specified by:

iterator in interface Set<E>

notify

public void notify(Event event)
            throws RemoteException

Description copied from interface: EventListener

Notifies the event listener of an event. This operation forms the callback method of the asynchronous communication protocol expressed in the event package.

Specified by:

notify in interface EventListener

Parameters:

event - the event which is sent to the listener

Throws:

RemoteException - If a network connection failure occurs.

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<E>

Specified by:

remove in interface Set<E>

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<E>

Specified by:

removeAll in interface Set<E>

retainAll

public boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<E>

Specified by:

retainAll in interface Set<E>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<E>

Specified by:

toArray in interface Set<E>

toArray

public <T> T[] toArray(T[] a)

Specified by:

toArray in interface Collection<E>

Specified by:

toArray in interface Set<E>