Package com.tangosol.util

Interface MapTrigger.Entry<K,V>

All Superinterfaces:

InvocableMap.Entry<K,V>, Map.Entry<K,V>, QueryMap.Entry<K,V>

All Known Implementing Classes:

AbstractKeyBasedMap.EntrySet.Entry, BackingMapBinaryEntry, BinaryMap.Entry, InvocableMapHelper.RoutingBinaryEntry, InvocableMapHelper.RoutingMapTriggerEntry, InvocableMapHelper.SimpleEntry, ObservableSplittingBackingCache.EntrySet.Entry, OpenHashMap.EntrySet.Entry, ReadWriteBackingMap.Entry, SerializationCache.EntrySet.Entry, SimpleElement.AttributeMap.Entry, SimpleMapEntry

Enclosing interface:

MapTrigger<K,V>

public static interface MapTrigger.Entry<K,V>
extends InvocableMap.Entry<K,V>

A MapTrigger Entry represents a pending change to an Entry that is about to committed to the underlying Map. The methods inherited from InvocableMap.Entry provide both the pending state and the ability to alter that state. The original state of the Entry can be obtained using the getOriginalValue() and isOriginalPresent() methods.

Method Summary

Modifier and Type	Method	Description
V	getOriginalValue()	Determine the value that existed before the start of the mutating operation that is being evaluated by the trigger.
boolean	isOriginalPresent()	Determine whether or not the Entry existed before the start of the mutating operation that is being evaluated by the trigger.

Methods inherited from interface com.tangosol.util.InvocableMap.Entry

asBinaryEntry, getKey, getValue, getValue, getValue, isPresent, isSynthetic, remove, setValue, setValue, update

Methods inherited from interface java.util.Map.Entry

equals, hashCode

Methods inherited from interface com.tangosol.util.QueryMap.Entry

extract, extractFromKey, extractFromValue

Method Detail

getOriginalValue

V getOriginalValue()

Determine the value that existed before the start of the mutating operation that is being evaluated by the trigger.

Returns:

the original value corresponding to this Entry; may be null if the value is null or if the Entry did not exist in the Map

isOriginalPresent

boolean isOriginalPresent()

Determine whether or not the Entry existed before the start of the mutating operation that is being evaluated by the trigger.

Returns:

true iff this Entry was existent in the containing Map