gov.nasa.arc.brahms.vm.api.jsvc
Class AbstractSynchronousEventService

java.lang.Object
  gov.nasa.arc.brahms.vm.api.jsvc.AbstractExternalService
      gov.nasa.arc.brahms.vm.api.jsvc.AbstractSynchronousEventService

All Implemented Interfaces:

IExternalService

public abstract class AbstractSynchronousEventService
extends AbstractExternalService

The AbstractSynchronousEventService is a base class for external services that want to handle the events generated by the virtual machine synchronously. This means that any events send to this service will be handled in full before returning control to the virtual machine.

Version:

28 September 2000

Author:

Ron van Hoof

See Also:

AbstractExternalService, IExternalService

Constructor Summary

AbstractSynchronousEventService()

Method Summary

void	init() Initializes the service
abstract void	processEvent(IEventMessage evt) Processes the event.
void	start() Start the service, registering the service with the event notifier so it can receive the events published to the event notifier.
void	stop() Stops the service, unregistering the service with the event notifier.

Methods inherited from class gov.nasa.arc.brahms.vm.api.jsvc.AbstractExternalService

assertFact, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, conclude, getContext, getID, getModel, getName, getVMController, getWorldState, isValidTruthValue, retractFact, send, send, send, setProperties

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractSynchronousEventService

public AbstractSynchronousEventService()

Method Detail

init

public void init()

Initializes the service

Specified by:

init in interface IExternalService

Specified by:

init in class AbstractExternalService

start

public void start()

Start the service, registering the service with the event notifier so it can receive the events published to the event notifier. The events are handled in the processEvent method.

Specified by:

start in interface IExternalService

Specified by:

start in class AbstractExternalService

stop

public void stop()

Stops the service, unregistering the service with the event notifier. Events published to the event notifier are no longer received and handled.

Specified by:

stop in interface IExternalService

Specified by:

stop in class AbstractExternalService

processEvent

public abstract void processEvent(IEventMessage evt)

Processes the event.

Parameters:

evt - the IEventMessage to be handled.