org.activiti.engine.delegate.event

Class BaseEntityEventListener

java.lang.Object

org.activiti.engine.delegate.event.BaseEntityEventListener

All Implemented Interfaces:

ActivitiEventListener

public class BaseEntityEventListener
extends Object
implements ActivitiEventListener

Base event listener that can be used when implementing an ActivitiEventListener to get notified when an entity is created, updated, deleted or if another entity-related event occurs. Override the onXX(..) methods to respond to entity changes accordingly.

Author:

Frederik Heremans

Field Summary

Fields

Modifier and Type	Field and Description
protected Class<?>	entityClass
protected boolean	failOnException

Constructor Summary

Constructors

Constructor and Description
BaseEntityEventListener() Create a new BaseEntityEventListener, notified when an event that targets any type of entity is received.
BaseEntityEventListener(boolean failOnException) Create a new BaseEntityEventListener.
BaseEntityEventListener(boolean failOnException, Class<?> entityClass)

Method Summary

Modifier and Type	Method and Description
boolean	isFailOnException()
protected boolean	isValidEvent(ActivitiEvent event)
protected void	onCreate(ActivitiEvent event) Called when an entity create event is received.
protected void	onDelete(ActivitiEvent event) Called when an entity delete event is received.
protected void	onEntityEvent(ActivitiEvent event) Called when an event is received, which is not a create, an update or delete.
void	onEvent(ActivitiEvent event) Called when an event has been fired
protected void	onInitialized(ActivitiEvent event) Called when an entity initialized event is received.
protected void	onUpdate(ActivitiEvent event) Called when an entity update event is received.

Methods inherited from class java.lang.Object

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

Field Detail

failOnException

protected boolean failOnException

entityClass

protected Class<?> entityClass

Constructor Detail

BaseEntityEventListener

public BaseEntityEventListener()

Create a new BaseEntityEventListener, notified when an event that targets any type of entity is received. Returning true when isFailOnException() is called.

BaseEntityEventListener

public BaseEntityEventListener(boolean failOnException)

Create a new BaseEntityEventListener.

Parameters:

failOnException - return value for isFailOnException().

BaseEntityEventListener

public BaseEntityEventListener(boolean failOnException,
                               Class<?> entityClass)

Method Detail

onEvent

public final void onEvent(ActivitiEvent event)

Description copied from interface: ActivitiEventListener

Called when an event has been fired

Specified by:

onEvent in interface ActivitiEventListener

Parameters:

event - the event

isFailOnException

public boolean isFailOnException()

Specified by:

isFailOnException in interface ActivitiEventListener

Returns:

whether or not the current operation should fail when this listeners execution throws an exception.

isValidEvent

protected boolean isValidEvent(ActivitiEvent event)

Returns:

true, if the event is an ActivitiEntityEvent and (if needed) the entityClass set in this instance, is assignable from the entity class in the event.

onCreate

protected void onCreate(ActivitiEvent event)

Called when an entity create event is received.

onInitialized

protected void onInitialized(ActivitiEvent event)

Called when an entity initialized event is received.

onDelete

protected void onDelete(ActivitiEvent event)

Called when an entity delete event is received.

onUpdate

protected void onUpdate(ActivitiEvent event)

Called when an entity update event is received.

onEntityEvent

protected void onEntityEvent(ActivitiEvent event)

Called when an event is received, which is not a create, an update or delete.