org.alfresco.bm.driver.event.producer

Interface EventProducer

All Known Implementing Classes:

AbstractEventProducer, RandomRedirectEventProducer, RedirectEventProducer, TerminateEventProducer

public interface EventProducer

Interface for components that can redirect events accoding to customized logic. The framework will attempt to find a producer for each event and, if found, transform it using the getNextEvents(Event) method. If no producer exists, then the event is persisted directly.

Implementations choose the next event outcome and ensure the correct input data is available.

Since:

2.0

Author:

Derek Hulley

Field Summary

Fields

Modifier and Type	Field and Description
static String	PRODUCER_NAME_PREFIX

Method Summary

Modifier and Type	Method and Description
List<Event>	getNextEvents(Event event) Construct a list of events to follow according the some scenario of business logic.

Field Detail

PRODUCER_NAME_PREFIX

static final String PRODUCER_NAME_PREFIX

See Also:

Constant Field Values

Method Detail

getNextEvents

List<Event> getNextEvents(Event event)

Construct a list of events to follow according the some scenario of business logic.

Implementations use the contextual data available to determine the next course of action. However, the no-op (empty list return) should be determined as quickly and cheaply as possible.

NB: Implementations must ensure that an adequate termination condition exists and return an empty list. If not, an infinite loop of events can ensue.

Parameters:

event - the event that triggered this choice

Returns:

a list of events to publish (never null) or an empty list if the scenario cannot continue