org.apache.ambari.server.events.jpa

Class JPAEvent

java.lang.Object

org.apache.ambari.server.events.jpa.JPAEvent

Direct Known Subclasses:

EntityManagerCacheInvalidationEvent

public abstract class JPAEvent
extends Object

The JPAEvent class is the base for all JPA events in Ambari. Although this class could inherit from AmbariEvent, the publishers for AmbariEvent instances use an asynchronous model. With JPA, we want a synchronous publication model in order to ensure that events are handled within the scope of the method invoking them.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	JPAEvent.JPAEventType The JPAEvent.JPAEventType defines the type of JPA event.

Field Summary

Fields

Modifier and Type	Field and Description
protected JPAEvent.JPAEventType	m_eventType The concrete event's type.

Constructor Summary

Constructors

Constructor and Description
JPAEvent(JPAEvent.JPAEventType eventType) Constructor.

Method Summary

Modifier and Type	Method and Description
JPAEvent.JPAEventType	getType() Gets the type of JPAEvent.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

m_eventType

protected final JPAEvent.JPAEventType m_eventType

The concrete event's type.

Constructor Detail

JPAEvent

public JPAEvent(JPAEvent.JPAEventType eventType)

Constructor.

Parameters:

eventType - the type of event (not null).

Method Detail

getType

public JPAEvent.JPAEventType getType()

Gets the type of JPAEvent.

Returns:

the event type (never null).

toString

public String toString()

Overrides:

toString in class Object