@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((name == null) ? 0 : name.hashCode());
		result = prime * result + ((note == null) ? 0 : note.hashCode());
		result = prime * result + ((pid == null) ? 0 : pid.hashCode());
		return result;
	}