sema
Class Event

java.lang.Object
  sema.Event

All Implemented Interfaces:

java.lang.Comparable

Direct Known Subclasses:

Element.ElementEvent

public abstract class Event

extends java.lang.Object

implements java.lang.Comparable

An event is used to plan the execution of a task in the futur.
An Event is linked with an Engine. It contains a 'whatToDo' and a date at which to execute the task.

Field Summary

java.lang.Double

date the date in milliseconde of simulated secs.

Constructor Summary

Event(double date, Engine e)
Constructs an event at the given date and ask that it is registered in the given engine.

Method Summary

int	compareTo(java.lang.Object o) The comparable interface is used to sort events by date.
protected void	delete() Delete the event.
boolean	execute() It is the method called by the engine at run time.
protected abstract void	whatToDo() The action to override in order to execute something.

Methods inherited from class java.lang.Object

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

Field Detail

date

public java.lang.Double date

the date in milliseconde of simulated secs.

Constructor Detail

Event

public Event(double date,
             Engine e)

Constructs an event at the given date and ask that it is registered in the given engine.

Method Detail

whatToDo

protected abstract void whatToDo()

The action to override in order to execute something.

execute

public boolean execute()

It is the method called by the engine at run time. before executing the todo, it verify it is still enable Returns true if the task is done, false otherwise.

delete

protected void delete()

Delete the event.

compareTo

public int compareTo(java.lang.Object o)

The comparable interface is used to sort events by date.

Specified by:

compareTo in interface java.lang.Comparable