public void removeSubTask(Task aTask) throws TaskException {
if (periods.size() > 0)
throw new TaskException(
"Can not remove subtask because time has already been reported on this task");
remove(aTask);
ApplicationEventDispatcher.fireEvent(new TaskRemovedEvent(this));
}
public void start() throws TaskException {
if (getChildCount() > 0)
throw new TaskException("If a task has subtasks you can only report on subtasks");
if (currentPeriod == null || currentPeriod.getEndTime() < System.currentTimeMillis()) {
currentPeriod = new Period();
currentPeriod.setTask(this);
addPeriod(currentPeriod);
ApplicationEventDispatcher.fireEvent(new TaskStartedEvent(this));
}
}