org.alfresco.bm.event.selector

Class AbstractEventSelector

java.lang.Object

org.alfresco.bm.event.selector.AbstractEventSelector

All Implemented Interfaces:

EventSelector

Direct Known Subclasses:

RandomWeightedEventSelector

public abstract class AbstractEventSelector
extends Object
implements EventSelector

Abstract base class for event selectors.

Author:

steveglover

Constructor Summary

Constructors

Constructor and Description
AbstractEventSelector(EventProcessorRegistry registry)

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract EventSuccessor	next() Implemented by subclasses to select a successor event.
Event	nextEvent(Object input, Object response) Select next event, which may be "noop" indicating that the event processing should end.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.alfresco.bm.event.selector.EventSelector

size

Constructor Detail

AbstractEventSelector

public AbstractEventSelector(EventProcessorRegistry registry)

Method Detail

next

protected abstract EventSuccessor next()

Implemented by subclasses to select a successor event.

Returns:

the successor event

nextEvent

public Event nextEvent(Object input,
              Object response)
                throws Exception

Description copied from interface: EventSelector

Select next event, which may be "noop" indicating that the event processing should end. Check that the event is a valid event by looking it up in the registry (does it have a been definition?).

Specified by:

nextEvent in interface EventSelector

Parameters:

input - the input into the previous event

response - the response from the previous event

Returns:

the next event, or null if there is no successor.

Throws:

Exception