org.alfresco.bm.event.selector

Class RandomWeightedEventSelector

java.lang.Object

org.alfresco.bm.event.selector.AbstractEventSelector

org.alfresco.bm.event.selector.RandomWeightedEventSelector

All Implemented Interfaces:

EventSelector

public class RandomWeightedEventSelector
extends AbstractEventSelector

Select a successor event from a set of relatively-weighted event successors.

A weighted selection algorithm is used.

The list of successor events is defined thus:

                
                
                    
                        publicapi.getSites,1,${delay}
                        publicapi.query,5,${delay}
                    
                
            
 ]]>

The query event is five times more likely to occur than getSites
The ${delay} is optional and defaults to zero (i.e. no delay).

Since:

1.3

Author:

steveglover

Field Summary

Fields inherited from class org.alfresco.bm.event.selector.AbstractEventSelector

name, registry

Constructor Summary

Constructors

Constructor and Description
RandomWeightedEventSelector(EventProcessorRegistry registry, List<EventSuccessorInfo> eventSuccessors)
RandomWeightedEventSelector(String name, EventProcessorRegistry registry, List<EventSuccessorInfo> eventSuccessors)

Method Summary

Methods

Modifier and Type	Method and Description
protected EventSuccessor	next(Object input, Object response) Chooses randomly from the list of successor events based on the weightings provided.
int	size() The number of event successors registered.

Methods inherited from class org.alfresco.bm.event.selector.AbstractEventSelector

getName, nextEvent

Methods inherited from class java.lang.Object

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

Constructor Detail

RandomWeightedEventSelector

public RandomWeightedEventSelector(String name,
                           EventProcessorRegistry registry,
                           List<EventSuccessorInfo> eventSuccessors)

Parameters:

registry - registry that contains references to next events

eventSuccessors - list of events to choose from in form eventname,weighting[,delay]

RandomWeightedEventSelector

public RandomWeightedEventSelector(EventProcessorRegistry registry,
                           List<EventSuccessorInfo> eventSuccessors)

Parameters:

registry - registry that contains references to next events

eventSuccessors - list of events to choose from in form eventname,weighting[,delay]

Method Detail

next

protected EventSuccessor next(Object input,
                  Object response)

Chooses randomly from the list of successor events based on the weightings provided.

Specified by:

next in class AbstractEventSelector

Parameters:

input - ignored

response - ignored

Returns:

the successor event details

size

public int size()

Description copied from interface: EventSelector

The number of event successors registered.

Returns:

the number of event successors