Package org.cometd.oort
Class OortMap.DeltaListener<K,V>
java.lang.Object
org.cometd.oort.OortMap.DeltaListener<K,V>
- Type Parameters:
K- the key typeV- the value type
- All Implemented Interfaces:
EventListener,OortObject.Listener<ConcurrentMap<K,V>>
public static class OortMap.DeltaListener<K,V>
extends Object
implements OortObject.Listener<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.
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoidonRemoved(OortObject.Info<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.voidonUpdated(OortObject.Info<ConcurrentMap<K, V>> oldInfo, OortObject.Info<ConcurrentMap<K, V>> newInfo) Callback method invoked when the object value is updated.
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Constructor Details
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DeltaListener
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Method Details
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onUpdated
public void onUpdated(OortObject.Info<ConcurrentMap<K, V>> oldInfo, OortObject.Info<ConcurrentMap<K, V>> newInfo) Description copied from interface:OortObject.ListenerCallback method invoked when the object value is updated.- Specified by:
onUpdatedin interfaceOortObject.Listener<K>- Parameters:
oldInfo- theOortObject.Infobefore the change, may be nullnewInfo- theOortObject.Infoafter the change
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onRemoved
Description copied from interface:OortObject.ListenerCallback method invoked when the object value is removed, for example because the correspondent node has been shut down or crashed.- Specified by:
onRemovedin interfaceOortObject.Listener<K>- Parameters:
info- theOortObject.Infobefore the removal
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