public Task(ProjectId projectId, Title title, TaskPriority priority) : base(TaskId.Create(projectId, title))
{
if (title == null)
{
throw new ArgumentNullException("title");
}
if (priority == null)
{
throw new ArgumentNullException("priority");
}
ApplyChange(new TaskRegistered(Id, projectId, title, priority.DisplayName));
}
public void Reprioritize(TaskPriority newPriority)
{
if (newPriority == null)
{
throw new ArgumentNullException("newPriority");
}
if (newPriority.Equals(_priority))
{
return;
}
ApplyChange(new TaskReprioritized(Id, _priority.DisplayName, newPriority.DisplayName));
}
private void Apply(TaskReprioritized @event)
{
Id = new TaskId(@event.TaskId);
_priority = TaskPriority.Parse(@event.NewPriority);
}