DynamicRegionListener (Apache Geode 1.12.8)
Date: 2022-01-10

org.apache.geode.cache

## Interface DynamicRegionListener

-     public interface DynamicRegionListener

  `DynamicRegionListener` is an interface that can be implemented to handle dynamic region-related events. The methods on a `DynamicRegionListener` are invoked synchronously. If the listener method takes a long time to execute then it will cause the operation that caused it to be invoked to take a long time.

  Note: It is possible to receive duplicate create events when the DynamicRegionFactory goes active due to Cache creation.

  See `DynamicRegionFactory`

  Since:
    GemFire 4.3

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `afterRegionCreate(RegionEvent<?,?> event)` Handles the 'after region creation' event of a dynamic region.
    `void` | `afterRegionDestroy(RegionEvent<?,?> event)` Handles the 'after region destroyed' event of a dynamic region.
    `void` | `beforeRegionCreate(String parentRegionName, String regionName)` Handles the 'before region creation' event of a dynamic region.
    `void` | `beforeRegionDestroy(RegionEvent<?,?> event)` Handles the 'before region destroyed' event of a dynamic region.

- - ### Method Detail

    - #### beforeRegionCreate

          void beforeRegionCreate(String parentRegionName,
                                  String regionName)

      Handles the 'before region creation' event of a dynamic region. This method is invoked before the dynamic region is created in the local VM.
      Parameters:
        `parentRegionName` - The name of the parent region
        `regionName` - The name of the region being created

    - #### afterRegionCreate

          void afterRegionCreate(RegionEvent<?,?> event)

      Handles the 'after region creation' event of a dynamic region. This method is invoked after the dynamic region is created in the local VM.
      Parameters:
        `event` - A `RegionEvent` describing the event

    - #### beforeRegionDestroy

          void beforeRegionDestroy(RegionEvent<?,?> event)

      Handles the 'before region destroyed' event of a dynamic region. This method is invoked before the dynamic region is destroyed in the local VM.
      Parameters:
        `event` - A `RegionEvent` describing the event

    - #### afterRegionDestroy

          void afterRegionDestroy(RegionEvent<?,?> event)

      Handles the 'after region destroyed' event of a dynamic region. This method is invoked after the dynamic region is destroyed in the local VM.
      Parameters:
        `event` - A `RegionEvent` describing the event