Class OortMap.DeltaListener<K,​V>

java.lang.Object
org.cometd.oort.OortMap.DeltaListener<K,​V>
Type Parameters:
K - the key type
V - the value type
All Implemented Interfaces:
java.util.EventListener, OortObject.Listener<java.util.concurrent.ConcurrentMap<K,​V>>
Enclosing class:
OortMap<K,​V>

public static class OortMap.DeltaListener<K,​V>
extends java.lang.Object
implements OortObject.Listener<java.util.concurrent.ConcurrentMap<K,​V>>

An implementation of OortObject.Listener that converts whole map events into OortMap.EntryListener events.

For example, if an entity map:

 {
     key0: value0,
     key1: value1,
     key2: value2
 }
 

is replaced by a map:

 {
     key0: value0,
     key1: valueA,
     key3: valueB
 }
 

then this listener generates two "put" events with the following entries:

 (key1, value1, valueA)
 (key3, null, valueB)
 

and one "remove" event with the following entry:

 (key2, value2, null)
 

Note that no event is emitted for key0; the values for key0 of the two maps are tested via Object.equals(Object) and if they are equal no event is generated.

  • Constructor Summary

    Constructors
    Constructor Description
    DeltaListener​(OortMap<K,​V> oortMap)  
  • Method Summary

    Modifier and Type Method Description
    void onRemoved​(OortObject.Info<java.util.concurrent.ConcurrentMap<K,​V>> info)
    Callback method invoked when the object value is removed, for example because the correspondent node has been shut down or crashed.
    void onUpdated​(OortObject.Info<java.util.concurrent.ConcurrentMap<K,​V>> oldInfo, OortObject.Info<java.util.concurrent.ConcurrentMap<K,​V>> newInfo)
    Callback method invoked when the object value is updated.

    Methods inherited from class java.lang.Object

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