org.apache.geode.cache

## Interface EntryOperation<K,V>

-     public interface EntryOperation<K,V>

  Gemfire Context passed to `PartitionResolver` to compute the data location
  Since:
    GemFire 6.0
  See Also:
    `PartitionResolver`

- - ### Method Summary

    All Methods Instance Methods Abstract Methods Deprecated Methods
    Modifier and Type | Method and Description
    --- | ---
    `java.lang.Object` | `getCallbackArgument()` Returns the callbackArgument passed to the method that generated this event.
    `K` | `getKey()` Returns the key.
    `V` | `getNewValue()` Deprecated.
    `Operation` | `getOperation()` Deprecated.
    `Region<K,V>` | `getRegion()` Returns the region to which this cached object belongs or the region that raised this event for `RegionEvent`s.
    `boolean` | `isCallbackArgumentAvailable()` Returns `true` if the callback argument is "available".

- - ### Method Detail

    - #### getRegion

          Region<K,V> getRegion()

      Returns the region to which this cached object belongs or the region that raised this event for `RegionEvent`s.
      Returns:
        the region associated with this object or the region that raised this event.

    - #### getOperation

          Operation getOperation()

      Deprecated.
      Return a description of the operation that triggered this event. It may return null and should not be used to generate routing object in `PartitionResolver.getRoutingObject(EntryOperation)`
      Returns:
        the operation that triggered this event.
      Since:
        GemFire 6.0

    - #### getKey

          K getKey()

      Returns the key.
      Returns:
        the key

    - #### getCallbackArgument

          java.lang.Object getCallbackArgument()

      Returns the callbackArgument passed to the method that generated this event. Provided primarily in case this object or region has already been destroyed. See the `Region` interface methods that take a callbackArgument parameter. Only fields on the key should be used when creating the routing object.
      Returns:
        the callbackArgument associated with this event. `null` is returned if the callback argument is not propagated to the event. This happens for events given to `TransactionListener` and to `CacheListener` on the remote side of a transaction commit.

    - #### isCallbackArgumentAvailable

          boolean isCallbackArgumentAvailable()

      Returns `true` if the callback argument is "available". Not available means that the callback argument may have existed but it could not be obtained. Note that `getCallbackArgument()` will return `null` when this method returns `false`.
      Since:
        GemFire 6.0

    - #### getNewValue

          V getNewValue()

      Deprecated.
      Returns the value but may return null and should not be used to generate routing object in `PartitionResolver.getRoutingObject(EntryOperation)`. Only fields on the key should be used when creating the routing object.
      Returns:
        the value.