Class MapChangeListener.Change<K,V>

public abstract static class MapChangeListener.Change<K,V>
extends Object

• Constructor Summary

  Constructors

  Constructor and Description
  Change(ObservableMap<K,V> map) Constructs a change associated with a map.

• Method Summary

  All MethodsInstance MethodsAbstract MethodsConcrete Methods

  Modifier and Type	Method and Description
  abstract K	getKey() A key associated with the change.
  ObservableMap<K,V>	getMap() An observable map that is associated with the change.
  abstract V	getValueAdded() Get the new value of the key.
  abstract V	getValueRemoved() Get the old value of the key.
  abstract boolean	wasAdded() If this change is a result of add operation.
  abstract boolean	wasRemoved() If this change is a result of removal operation.

  • Methods inherited from class java.lang.Object

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

• Constructor Detail

  • Change

    public Change(ObservableMap<K,V> map)

    Constructs a change associated with a map.

    Parameters:

    map - the source of the change

• Method Detail

  • getMap

    public ObservableMap<K,V> getMap()

    An observable map that is associated with the change.

    Returns:

    the source map

  • wasAdded

    public abstract boolean wasAdded()

    If this change is a result of add operation.

    Returns:

    true if a new value (or key-value) entry was added to the map

  • wasRemoved

    public abstract boolean wasRemoved()

    If this change is a result of removal operation. Note that an element might be removed even as a result of put operation.

    Returns:

    true if an old value (or key-value) entry was removed from the map

  • getKey

    public abstract K getKey()

    A key associated with the change. If the change is a remove change, the key no longer exist in a map. Otherwise, the key got set to a new value.

    Returns:

    the key that changed

  • getValueAdded

    public abstract V getValueAdded()

    Get the new value of the key. Return null if this is a removal.

    Returns:

    the value that is now associated with the key

  • getValueRemoved

    public abstract V getValueRemoved()

    Get the old value of the key. This is null if and only if the value was added to the key that was not previously in the map.

    Returns:

    the value previously associated with the key