Example #1
0
 protected void runSolverPhases() {
   Iterator<SolverPhase> it = solverPhaseList.iterator();
   while (!termination.isSolverTerminated(solverScope) && it.hasNext()) {
     SolverPhase solverPhase = it.next();
     solverPhase.solve(solverScope);
     if (it.hasNext()) {
       solverScope.setWorkingSolutionFromBestSolution();
     }
   }
   // TODO support doing round-robin of phases (only non-construction heuristics)
 }
Example #2
0
  public ConstructionHeuristicMoveScope nominateMove(ConstructionHeuristicStepScope stepScope) {
    Object entity = stepScope.getEntity();
    if (!reinitializeVariableEntityFilter.accept(stepScope.getScoreDirector(), entity)) {
      return null;
    }
    // TODO extract to PlacerForager
    Score maxScore = null;
    ConstructionHeuristicMoveScope nominatedMoveScope = null;

    int moveIndex = 0;
    for (Iterator it = valueSelector.iterator(entity); it.hasNext(); ) {
      Object value = it.next();
      ConstructionHeuristicMoveScope moveScope = new ConstructionHeuristicMoveScope(stepScope);
      moveScope.setMoveIndex(moveIndex);
      Move move;
      if (variableDescriptor.isChained()) {
        move = new ChainedChangeMove(entity, variableDescriptor, value);
      } else {
        move = new ChangeMove(entity, variableDescriptor, value);
      }
      moveScope.setMove(move);
      if (!move.isMoveDoable(stepScope.getScoreDirector())) {
        logger.trace(
            "        Move index ({}) not doable, ignoring move ({}).",
            moveScope.getMoveIndex(),
            move);
      } else {
        doMove(moveScope);
        // TODO extract to PlacerForager
        if (maxScore == null || moveScope.getScore().compareTo(maxScore) > 0) {
          maxScore = moveScope.getScore();
          // TODO for non explicit Best Fit *, default to random picking from a maxMoveScopeList
          nominatedMoveScope = moveScope;
        }
        if (moveIndex >= selectedCountLimit) {
          break;
        }
      }
      moveIndex++;
      if (termination.isPhaseTerminated(stepScope.getPhaseScope())) {
        break;
      }
    }
    return nominatedMoveScope;
  }