Class ProcessStage

java.lang.Object
  ProcessStage

All Implemented Interfaces:

EventHandlerIF

Direct Known Subclasses:

ProcessStageConstCPU, ProcessStageExpCPU

public abstract class ProcessStage
extends java.lang.Object
implements EventHandlerIF

Field Summary

protected ConfigDataIF	config
private static boolean	DEBUG

Constructor Summary

ProcessStage()

Method Summary

void	destroy() Called when an event handler is destroyed.
void	handleEvent(QueueElementIF item) Handle the event corresponding to the given QueueElementIF.
void	handleEvents(QueueElementIF[] items) Handle the events corresponding to the given QueueElementIF array.
void	init(ConfigDataIF config) Called when an event handler is initialized.
protected abstract void	processMessage(Message msg)

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

private static final boolean DEBUG

See Also:

Constant Field Values

config

protected ConfigDataIF config

Constructor Detail

ProcessStage

public ProcessStage()

Method Detail

init

public void init(ConfigDataIF config)
          throws java.lang.Exception

Description copied from interface: EventHandlerIF

Called when an event handler is initialized. This method should perform any initialization operations as required by the application.

Specified by:

init in interface EventHandlerIF

Parameters:

config - The set of configuration parameters for the stage.

Throws:

java.lang.Exception - The EventHandler can indicate an error to the runtime during initialization by throwing an Exception.

destroy

public void destroy()

Description copied from interface: EventHandlerIF

Called when an event handler is destroyed. This method should perform any cleanup or shutdown operations as required by the application before the event handler is removed from the system.

Specified by:

destroy in interface EventHandlerIF

processMessage

protected abstract void processMessage(Message msg)

handleEvent

public void handleEvent(QueueElementIF item)

Description copied from interface: EventHandlerIF

Handle the event corresponding to the given QueueElementIF. This method is invoked by the system when a single event is pending for the event handler.

Specified by:

handleEvent in interface EventHandlerIF

handleEvents

public void handleEvents(QueueElementIF[] items)

Description copied from interface: EventHandlerIF

Handle the events corresponding to the given QueueElementIF array. This method is invoked when multiple events are pending for the event handler. The application may reorder, filter, or drop these events if it wishes to do so.

Specified by:

handleEvents in interface EventHandlerIF