EventManager (OpenJPA Utilities Library 4.1.0 API)

All Known Implementing Classes:

AbstractConcurrentEventManager, JDBCEventConnectionDecorator
```
public interface EventManager
```
Basic event manager interface.

Author:

Abe White

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`addListener(Object listener)`	Add an event listener.
`Exception[]`	`fireEvent(Object event)`	Fire the given event to all listeners, returning any exceptions.
`Collection`	`getListeners()`	Return a read-only list of listeners.
`boolean`	`hasListener(Object listener)`	Return whether the given instance is in the list of listeners.
`boolean`	`hasListeners()`	Return true if there are any registered listeners.
`boolean`	`removeListener(Object listener)`	Remove an event listener.

- Method Detail
  - addListener
```
void addListener(Object listener)
```
    Add an event listener.
  - removeListener
```
boolean removeListener(Object listener)
```
    Remove an event listener.
  - hasListener
```
boolean hasListener(Object listener)
```
    Return whether the given instance is in the list of listeners.
  - hasListeners
```
boolean hasListeners()
```
    Return true if there are any registered listeners.
  - getListeners
```
Collection getListeners()
```
    Return a read-only list of listeners.
  - fireEvent
```
Exception[] fireEvent(Object event)
```
    Fire the given event to all listeners, returning any exceptions.