ObservableSet (Knowledgeplaza Java Utilities 1.17 API)

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nl.knowledgeplaza.util.collection
Class ObservableSet

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractSet<E>
          java.util.HashSet
              nl.knowledgeplaza.util.collection.ObservableSet

All Implemented Interfaces:: Serializable, Cloneable, Iterable, Collection, Set, ObservableCollection

public class ObservableSet
extends HashSet
implements ObservableCollection
extends HashSet
implements ObservableCollection

The ObservableSet subclasses the HashSet and overrides all the functions that change the internally stored collection. In the overridden function, it simply calls the super class's function and fires a CollectionEvent to let observers know the collection has changed.

See Also:: Serialized Form

Field Summary
`protected ArrayList`	`listeners` the observers of this collection

Constructor Summary
`ObservableSet()` Constructs a new, empty set; the backing HashMap instance has default initial capacity (16) and load factor (0.75).
`ObservableSet(Collection c)` Constructs a new set containing the elements in the specified collection.
`ObservableSet(int initialCapacity)` Constructs a new, empty set; the backing HashMap instance has the specified initial capacity and default load factor, which is 0.75.
`ObservableSet(int initialCapacity, float loadFactor)` Constructs a new, empty set; the backing HashMap instance has the specified initial capacity and the specified load factor.

Method Summary
`boolean`	`add(Object o)` Calls the super class's corresponding method and fires a CollectionEvent.
`boolean`	`addAll(Collection c)` Calls the super class's corresponding method and fires a CollectionEvent.
`void`	`addCollectionListener(CollectionListener l)` Adds a listener to this collection.
`void`	`clear()` Calls the super class's corresponding method and fires a CollectionEvent.
`protected void`	`fireCollectionEvent(CollectionEvent e)` Fires a CollectionEvent to all listeners.
`Object`	`getObservedCollection()` To access the collection that is being observed.
`boolean`	`remove(Object o)` Calls the super class's corresponding method and fires a CollectionEvent.
`boolean`	`removeAll(Collection c)` Calls the super class's corresponding method and fires a CollectionEvent.
`void`	`removeCollectionListener(CollectionListener l)` Removes the listener from this collection.
`boolean`	`retainAll(Collection c)` Calls the super class's corresponding method and fires a CollectionEvent.

Methods inherited from class java.util.HashSet
`clone, contains, isEmpty, iterator, size`

Methods inherited from class java.util.AbstractSet
`equals, hashCode`

Methods inherited from class java.util.AbstractCollection
`containsAll, toArray, toArray, toString`

Methods inherited from class java.lang.Object
`finalize, getClass, notify, notifyAll, wait, wait, wait`

Methods inherited from interface java.util.Set
`containsAll, equals, hashCode, toArray, toArray`

Field Detail

listeners

protected ArrayList listeners

the observers of this collection

Constructor Detail

ObservableSet

public ObservableSet()

Constructs a new, empty set; the backing HashMap instance has default initial capacity (16) and load factor (0.75).

ObservableSet

public ObservableSet(Collection c)

Constructs a new set containing the elements in the specified collection. The HashMap is created with default load factor (0.75) and an initial capacity sufficient to contain the elements in the specified collection.

Parameters:: c - the collection whose elements are to be placed into this set.

ObservableSet

public ObservableSet(int initialCapacity,
                     float loadFactor)

Constructs a new, empty set; the backing HashMap instance has the specified initial capacity and the specified load factor.

Parameters:: initialCapacity - the initial capacity of the hash map.; loadFactor - the load factor of the hash map.

ObservableSet

public ObservableSet(int initialCapacity)

Constructs a new, empty set; the backing HashMap instance has the specified initial capacity and default load factor, which is 0.75.

Parameters:: initialCapacity - the initial capacity of the hash table.

Method Detail