| Interface | Description | 
|---|---|
| DuplicationStrategy | 
 Defines listener duplication checking strategy, both in terms of when a duplication is detected (see
  
DuplicationStrategy.areMatch(java.lang.Object, java.lang.Object)) as well as how to handle a duplication (see DuplicationStrategy.getAction()). | 
| EventListenerGroup<T> | 
 Contract for a groups of events listeners for a particular event type. 
 | 
| EventListenerRegistry | 
 Service for accessing each  
EventListenerGroup by EventType, as well as convenience
 methods for managing the listeners registered in each EventListenerGroup. | 
| JpaBootstrapSensitive | 
 Defines an event listener that is sensitive to whether a native or jpa bootstrap was performed 
 | 
| Enum | Description | 
|---|---|
| DuplicationStrategy.Action | 
 The enumerated list of actions available on duplication match 
 | 
| Exception | Description | 
|---|---|
| EventListenerRegistrationException | 
 Indicates a problem registering an event listener. 
 | 
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