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com.tangosol.util
Interface MapTrigger.Entry

All Superinterfaces:

InvocableMap.Entry, Map.Entry, QueryMap.Entry

All Known Implementing Classes:

AbstractKeyBasedMap.EntrySet.Entry, BinaryMap.Entry, ObservableSplittingBackingCache.EntrySet.Entry, SerializationCache.EntrySet.Entry, SimpleElement.AttributeMap.Entry, SimpleMapEntry

Enclosing interface:

MapTrigger

public static interface MapTrigger.Entry

extends InvocableMap.Entry

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

Object	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

getKey, getValue, isPresent, remove, setValue, setValue, update

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

extract

Methods inherited from interface java.util.Map.Entry

equals, hashCode

Method Detail

getOriginalValue

Object 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

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