pstlab / PLATINUm

	private List<PrecedenceConstraint> constraints;				// precedence constraints

	/**

	 * 

	 * @param cs

	 * @param cost

	 */

	protected OverlappingSetSchedule(OverlappingSet cs, double cost) {

		super(cs, cost);

		this.constraints = new ArrayList<>();

	}

	/**

	 * 

	 * @param reference

	 * @param target

	 */

	public void addConstraint(Decision reference, Decision target) {

		// create constraint data

		PrecedenceConstraint pc = new PrecedenceConstraint(reference, target);

		// add constraint

		this.constraints.add(pc);

	}

	/**

	 * 

	 * @return

	 */

	public List<PrecedenceConstraint> getConstraints() {

		return new ArrayList<>(this.constraints);

	}

	/**

	 * 

	 */

	@Override

	public int compareTo(FlawSolution o) {

		OverlappingSetSchedule schedule = (OverlappingSetSchedule) o;

		return this.constraints.size() > schedule.constraints.size() ? -1 : 

			this.constraints.size() < schedule.constraints.size() ? 1 : 0;