EventListenerGroup (hibernate-core JavaDocs)

All Superinterfaces:

java.io.Serializable
```
public interface EventListenerGroup<T>
extends java.io.Serializable
```
Contract for a groups of events listeners for a particular event type.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`addDuplicationStrategy(DuplicationStrategy strategy)`	Mechanism to more finely control the notion of duplicates.
`void`	`appendListener(T listener)`
`void`	`appendListeners(T... listeners)`
`void`	`clear()`
`int`	`count()`
`EventType<T>`	`getEventType()`	Retrieve the event type associated with this groups of listeners.
`boolean`	`isEmpty()`	Are there no listeners registered?
`java.lang.Iterable<T>`	`listeners()`
`void`	`prependListener(T listener)`
`void`	`prependListeners(T... listeners)`

- Method Detail
  - getEventType
```
EventType<T> getEventType()
```
    Retrieve the event type associated with this groups of listeners.
    
    Returns:
    
    The event type.
  - isEmpty
```
boolean isEmpty()
```
    Are there no listeners registered?
    
    Returns:
    
    true if no listeners are registered; false otherwise.
  - count
```
int count()
```
  - listeners
```
java.lang.Iterable<T> listeners()
```
  - addDuplicationStrategy
```
void addDuplicationStrategy(DuplicationStrategy strategy)
```
    Mechanism to more finely control the notion of duplicates.
    For example, say you are registering listeners for an extension library. This extension library could define a "marker interface" which indicates listeners related to it and register a strategy that checks against that marker interface.
    
    Parameters:
    
    strategy - The duplication strategy
  - appendListener
```
void appendListener(T listener)
```
  - appendListeners
```
void appendListeners(T... listeners)
```
  - prependListener
```
void prependListener(T listener)
```
  - prependListeners
```
void prependListeners(T... listeners)
```
  - clear
```
void clear()
```