| 1 | package de.uka.ipd.sdq.dsexplore.opt4j.representation; |
| 2 | |
| 3 | import java.util.ArrayList; |
| 4 | import java.util.Collection; |
| 5 | import java.util.HashMap; |
| 6 | import java.util.Iterator; |
| 7 | import java.util.List; |
| 8 | import java.util.Map; |
| 9 | |
| 10 | import org.apache.log4j.Logger; |
| 11 | import org.eclipse.core.runtime.CoreException; |
| 12 | import org.eclipse.core.runtime.IProgressMonitor; |
| 13 | import org.eclipse.emf.common.util.EList; |
| 14 | import org.eclipse.emf.common.util.URI; |
| 15 | import org.eclipse.emf.ecore.EObject; |
| 16 | import org.eclipse.emf.ecore.resource.Resource; |
| 17 | import org.eclipse.emf.ecore.resource.ResourceSet; |
| 18 | import org.eclipse.emf.ecore.util.EcoreUtil.Copier; |
| 19 | import org.opt4j.core.Constraint; |
| 20 | import org.opt4j.core.Constraints; |
| 21 | import org.opt4j.core.Criterion; |
| 22 | import org.opt4j.core.DoubleValue; |
| 23 | import org.opt4j.core.Objective; |
| 24 | import org.opt4j.core.Objectives; |
| 25 | import org.opt4j.core.problem.Evaluator; |
| 26 | |
| 27 | import com.google.inject.Inject; |
| 28 | import com.google.inject.Provider; |
| 29 | |
| 30 | import de.uka.ipd.sdq.dsexplore.analysis.AnalysisFailedException; |
| 31 | import de.uka.ipd.sdq.dsexplore.analysis.IAnalysis; |
| 32 | import de.uka.ipd.sdq.dsexplore.analysis.IAnalysisResult; |
| 33 | import de.uka.ipd.sdq.dsexplore.analysis.PCMPhenotype; |
| 34 | import de.uka.ipd.sdq.dsexplore.helper.ConstraintAndEvaluator; |
| 35 | import de.uka.ipd.sdq.dsexplore.helper.CriterionAndEvaluator; |
| 36 | import de.uka.ipd.sdq.dsexplore.helper.ObjectiveAndEvaluator; |
| 37 | import de.uka.ipd.sdq.dsexplore.launch.MoveInitialPCMModelPartitionJob; |
| 38 | import de.uka.ipd.sdq.dsexplore.opt4j.start.Opt4JStarter; |
| 39 | import de.uka.ipd.sdq.workflow.exceptions.JobFailedException; |
| 40 | import de.uka.ipd.sdq.workflow.exceptions.UserCanceledException; |
| 41 | import de.uka.ipd.sdq.workflow.mdsd.blackboard.MDSDBlackboard; |
| 42 | import de.uka.ipd.sdq.workflow.pcm.blackboard.PCMResourceSetPartition; |
| 43 | import de.uka.ipd.sdq.workflow.pcm.jobs.LoadPCMModelsIntoBlackboardJob; |
| 44 | |
| 45 | /** |
| 46 | * The Evaluator is responsible for determining the objective functions values |
| 47 | * for an individual based on the phenotype (i.e. the PCM instance). Thus, |
| 48 | * it calls the simulation or LQN solver for performance and also a cost |
| 49 | * evaluator. |
| 50 | * |
| 51 | * It is a singleton |
| 52 | * |
| 53 | * @author Anne |
| 54 | * |
| 55 | */ |
| 56 | public class DSEEvaluator implements Evaluator<PCMPhenotype>{ |
| 57 | |
| 58 | protected List<ObjectiveAndEvaluator> objectives; |
| 59 | protected List<ConstraintAndEvaluator> constraints; |
| 60 | |
| 61 | private List<Exception> exceptionList = new ArrayList<Exception>(); |
| 62 | |
| 63 | private boolean firstRunSuccessful = false; |
| 64 | |
| 65 | //@SuppressWarnings("unused") |
| 66 | //private Map<Objective,DSEConstraint> constraints; |
| 67 | |
| 68 | private Map<String, DSEObjectives> phenotypeResultsCache = new HashMap<String, DSEObjectives>(); |
| 69 | |
| 70 | private List<IAnalysis> evaluators; |
| 71 | |
| 72 | private IProgressMonitor monitor; |
| 73 | private Provider<DSEObjectives> objectivesProvider; |
| 74 | private boolean stopOnInitialFailure; |
| 75 | private MDSDBlackboard blackboard; |
| 76 | |
| 77 | |
| 78 | |
| 79 | /** Logger for log4j. */ |
| 80 | private static Logger logger = |
| 81 | Logger.getLogger("de.uka.ipd.sdq.dsexplore.opt4j.representation.DSEEvaluator"); |
| 82 | |
| 83 | @Inject |
| 84 | public DSEEvaluator(Provider<DSEObjectives> provider) { |
| 85 | this.objectivesProvider = provider; |
| 86 | } |
| 87 | |
| 88 | public void init(List<IAnalysis> evaluators, IProgressMonitor monitor, MDSDBlackboard blackboard, boolean stopOnInitialFailure){ |
| 89 | |
| 90 | this.blackboard = blackboard; |
| 91 | copyPCMPartitionToAnalysisSlot(blackboard); |
| 92 | |
| 93 | //Give the evaluators the blackboard, because they cannot determine the objectives before that. |
| 94 | for (IAnalysis iAnalysis : evaluators) { |
| 95 | iAnalysis.setBlackboard(blackboard); |
| 96 | } |
| 97 | |
| 98 | //TODO: insert evaluators properly, e.g. with Guice. |
| 99 | initCriterions(evaluators); |
| 100 | this.monitor = monitor; |
| 101 | this.evaluators = evaluators; |
| 102 | this.stopOnInitialFailure = stopOnInitialFailure; |
| 103 | |
| 104 | } |
| 105 | |
| 106 | /** |
| 107 | * Fills the Criterions according to the passed evaluators. |
| 108 | * @param evaluators |
| 109 | * @return a new list. |
| 110 | */ |
| 111 | private void initCriterions(List<IAnalysis> evaluators) { |
| 112 | this.objectives = new ArrayList<ObjectiveAndEvaluator>(); |
| 113 | this.constraints = new ArrayList<ConstraintAndEvaluator>(); |
| 114 | for (IAnalysis analysis : evaluators) { |
| 115 | try { |
| 116 | //Objective quality = new Objective(analysis.getQualityAttribute(), Objective.Sign.MIN); |
| 117 | //objectives.add(new ObjectiveAndEvaluator(quality, analysis)); |
| 118 | List<Criterion> criterionList = analysis.getCriterions(); |
| 119 | for (Criterion criterion : criterionList) { |
| 120 | if (criterion instanceof Objective) { |
| 121 | this.objectives.add(new ObjectiveAndEvaluator((Objective)criterion, analysis)); |
| 122 | } else if (criterion instanceof Constraint) { |
| 123 | this.constraints.add(new ConstraintAndEvaluator((Constraint)criterion, analysis)); |
| 124 | } |
| 125 | } |
| 126 | } catch (CoreException e){ |
| 127 | logger.error("Could not load quality attribute evaluator "+analysis.getClass()); |
| 128 | e.printStackTrace(); |
| 129 | throw new RuntimeException(e); |
| 130 | } |
| 131 | } |
| 132 | //return objectives; |
| 133 | } |
| 134 | |
| 135 | |
| 136 | public void reset(){ |
| 137 | this.firstRunSuccessful = false; |
| 138 | this.exceptionList = new ArrayList<Exception>(); |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * The current implicit assumption is that each candidate is evaluated right after |
| 143 | * it has been decoded, or never. |
| 144 | * |
| 145 | * {@inheritDoc} |
| 146 | */ |
| 147 | @Override |
| 148 | public DSEObjectives evaluate(PCMPhenotype pheno) { |
| 149 | |
| 150 | copyPCMPartitionToAnalysisSlot(this.blackboard); |
| 151 | |
| 152 | DSEObjectives cachedObjective = this.phenotypeResultsCache.get(pheno.getGenotypeID()); |
| 153 | if (cachedObjective != null){ // check if constraints are evaluated --> retrieveConstraint... |
| 154 | return cachedObjective; |
| 155 | } else { |
| 156 | |
| 157 | //DSEObjectives obj = new DSEObjectives(); |
| 158 | DSEObjectives obj = objectivesProvider.get(); |
| 159 | try{ |
| 160 | |
| 161 | for (IAnalysis evaluator : this.evaluators) { |
| 162 | evaluator.analyse(pheno, this.monitor); |
| 163 | } |
| 164 | |
| 165 | } catch (UserCanceledException e){ |
| 166 | fillObjectivesWithInfeasible(obj); |
| 167 | return obj; |
| 168 | |
| 169 | } catch (Exception e){ |
| 170 | |
| 171 | //If this is the first evaluation, then something severe seems to be wrong, throw an exception |
| 172 | if (!firstRunSuccessful && this.stopOnInitialFailure){ |
| 173 | e.printStackTrace(); |
| 174 | throw new RuntimeException("An exception was raised at the beginning, I assume it makes no sense to continue. See stacktrace for details.",e); |
| 175 | } |
| 176 | // else try to retrieve the results anyway |
| 177 | logger.error("Quality analysis threw exception, trying to ignoring it and retrieve results. Cause: "+e.getMessage()); |
| 178 | e.printStackTrace(); |
| 179 | } |
| 180 | |
| 181 | try { |
| 182 | for (int i = 0; i < objectives.size() ; i++) { |
| 183 | retrieveQuality(pheno, obj, this.objectives.get(i)); |
| 184 | } |
| 185 | |
| 186 | for (int i = 0; i < constraints.size(); i++) { |
| 187 | retrieveConstraint(pheno, obj, this.constraints.get(i)); |
| 188 | } |
| 189 | |
| 190 | //retrieveCost(pheno, obj, this.objectives.get(objectives.size() -1)); |
| 191 | |
| 192 | firstRunSuccessful = true; |
| 193 | |
| 194 | this.phenotypeResultsCache.put(pheno.getGenotypeID(), obj); |
| 195 | return obj; |
| 196 | |
| 197 | } catch (UserCanceledException e){ |
| 198 | fillObjectivesWithInfeasible(obj); |
| 199 | return obj; |
| 200 | |
| 201 | } catch (Exception e){ |
| 202 | |
| 203 | return ignoreOrFailWithRuntimeException(obj, e); |
| 204 | } |
| 205 | |
| 206 | } |
| 207 | } |
| 208 | |
| 209 | private DSEObjectives ignoreOrFailWithRuntimeException(DSEObjectives obj, |
| 210 | Exception e) { |
| 211 | //If this is the first evaluation, then something severe seems to be wrong, throw an exception |
| 212 | if (!firstRunSuccessful && this.stopOnInitialFailure){ |
| 213 | e.printStackTrace(); |
| 214 | throw new RuntimeException("An exception was raised at the beginning, I assume it makes no sense to continue. See stacktrace for details.",e); |
| 215 | } else { |
| 216 | //if this is just a failure during the course of the run, ignore it and output it later |
| 217 | //Do not discard the individual to allow a manual error tracing later |
| 218 | this.exceptionList.add(new Exception("Evaluation of a candidate failed. Filling objectves with NaN.",e)); |
| 219 | |
| 220 | fillObjectivesWithInfeasible(obj); |
| 221 | fillConstraintsWithInfeasible(obj); |
| 222 | return obj; |
| 223 | } |
| 224 | } |
| 225 | |
| 226 | private static void copyPCMPartitionToAnalysisSlot(MDSDBlackboard blackboard) { |
| 227 | // copy already varied PCM instance from MoveInitialPCMModelPartitionJob.INITIAL_PCM_MODEL_PARTITION_ID |
| 228 | // to analysis blackboard partition LoadPCMModelsIntoBlackboardJob.PCM_MODELS_PARTITION_ID |
| 229 | // TODO: vary the PCM model in its own blackboard partition so that the above assumption that each |
| 230 | // candidate is evaluated right after decoding can be dropped, and even further, allow parallel |
| 231 | // blackboard partitions so that analyses can run in parallel. |
| 232 | PCMResourceSetPartition analysisPartition = (PCMResourceSetPartition)blackboard.getPartition(LoadPCMModelsIntoBlackboardJob.PCM_MODELS_PARTITION_ID); |
| 233 | ResourceSet analysisResourceSet = analysisPartition.getResourceSet(); |
| 234 | |
| 235 | // clear any previous content. |
| 236 | analysisResourceSet.getResources().clear(); |
| 237 | |
| 238 | PCMResourceSetPartition originalModelPartition = (PCMResourceSetPartition)blackboard.getPartition(MoveInitialPCMModelPartitionJob.INITIAL_PCM_MODEL_PARTITION_ID); |
| 239 | EList<Resource> resourceList = originalModelPartition.getResourceSet().getResources(); |
| 240 | |
| 241 | Copier copier = new Copier(); |
| 242 | |
| 243 | for (Resource resource : resourceList) { |
| 244 | if (resource.getURI().toString().contains("pathmap")){ |
| 245 | //XXX: is it right that the model is not copied when a pathmap is present? hm... |
| 246 | analysisPartition.loadModel(resource.getURI()); |
| 247 | } else { |
| 248 | List<EObject> contentList = resource.getContents(); |
| 249 | Collection<EObject> copiedContent = copier.copyAll(contentList); |
| 250 | Resource newResource = analysisResourceSet.createResource(URI.createURI(resource.getURI()+"cand."+resource.getURI().fileExtension())); |
| 251 | newResource.getContents().addAll(copiedContent); |
| 252 | } |
| 253 | } |
| 254 | copier.copyReferences(); |
| 255 | } |
| 256 | |
| 257 | private void fillConstraintsWithInfeasible(Objectives obj) { |
| 258 | |
| 259 | //Just fill with NaN |
| 260 | Constraints con = obj.getConstraints(); |
| 261 | for (int i = 0; i < constraints.size(); i++) { |
| 262 | con.add(this.constraints.get(i).getConstraint(),new DoubleValue(Double.NaN)); |
| 263 | } |
| 264 | } |
| 265 | |
| 266 | private void fillObjectivesWithInfeasible(Objectives obj) { |
| 267 | for (int i = 0; i < objectives.size(); i++) { |
| 268 | //Check if the given quality is there. If not, add a value at that index. |
| 269 | if (obj.size() == i){ |
| 270 | addInfeasibleValue(obj,i); |
| 271 | } |
| 272 | } |
| 273 | } |
| 274 | |
| 275 | private void retrieveQuality(PCMPhenotype pheno, DSEObjectives obj, ObjectiveAndEvaluator o) throws CoreException, UserCanceledException, JobFailedException, AnalysisFailedException { |
| 276 | //retrieve response time |
| 277 | IAnalysisResult result = o.getEvaluator().retrieveResultsFor(pheno, o.getObjective()); |
| 278 | obj.add(o.getObjective(),result.getValueFor(o.getCriterion())); |
| 279 | obj.addResult(o.getObjective(), result); |
| 280 | |
| 281 | //Maybe handle a demand too large exception in the simulation separately by setting the objective to infinity. |
| 282 | |
| 283 | } |
| 284 | |
| 285 | private void retrieveConstraint(PCMPhenotype pheno, DSEObjectives obj, ConstraintAndEvaluator o) throws CoreException, UserCanceledException, JobFailedException, AnalysisFailedException { |
| 286 | IAnalysisResult result = o.getEvaluator().retrieveResultsFor(pheno, o.getConstraint()); |
| 287 | Constraints con = obj.getConstraints(); |
| 288 | con.add(o.getConstraint(),result.getValueFor(o.getCriterion())); |
| 289 | //con.addResult(o.getConstraint(), result); |
| 290 | |
| 291 | } |
| 292 | |
| 293 | public void retrieveCriterion(PCMPhenotype pheno, DSEObjectives obj, CriterionAndEvaluator criterionAndEvaluator) throws CoreException, UserCanceledException, JobFailedException, AnalysisFailedException { |
| 294 | if (criterionAndEvaluator instanceof ObjectiveAndEvaluator){ |
| 295 | this.retrieveQuality(pheno, obj, (ObjectiveAndEvaluator) criterionAndEvaluator); |
| 296 | } else if (criterionAndEvaluator instanceof ConstraintAndEvaluator){ |
| 297 | this.retrieveConstraint(pheno, obj, (ConstraintAndEvaluator) criterionAndEvaluator); |
| 298 | } else { |
| 299 | throw new RuntimeException("Unknown type of criterion and evaluator" + criterionAndEvaluator.getClass() +", adjust code in "+this.getClass()); |
| 300 | } |
| 301 | |
| 302 | } |
| 303 | |
| 304 | @Override |
| 305 | public Collection<Objective> getObjectives() { |
| 306 | return new ObjectiveAndEvaluatorListDecorator(this.objectives); |
| 307 | } |
| 308 | |
| 309 | public List<CriterionAndEvaluator> getCriterionAndEvaluatorList() { |
| 310 | List<CriterionAndEvaluator> criterionAndEvaluatorList = new ArrayList<CriterionAndEvaluator>(this.objectives.size()+this.constraints.size()); |
| 311 | criterionAndEvaluatorList.addAll(this.objectives); |
| 312 | criterionAndEvaluatorList.addAll(this.constraints); |
| 313 | return criterionAndEvaluatorList; |
| 314 | } |
| 315 | |
| 316 | //TODO: Add an interface ExceptionTracker to unify exception handling. |
| 317 | public List<Exception> getExceptionList(){ |
| 318 | return this.exceptionList; |
| 319 | } |
| 320 | |
| 321 | private Double getInfeasibleValue(ObjectiveAndEvaluator objectiveAndEvaluator){ |
| 322 | if (objectiveAndEvaluator.getObjective().getSign().equals(Objective.Sign.MAX)){ |
| 323 | return Double.NEGATIVE_INFINITY; |
| 324 | } else { |
| 325 | return Double.POSITIVE_INFINITY; |
| 326 | } |
| 327 | |
| 328 | } |
| 329 | |
| 330 | private void addInfeasibleValue(Objectives obj, int objectiveIndex){ |
| 331 | obj.add(this.objectives.get(objectiveIndex).getObjective(), getInfeasibleValue(this.objectives.get(objectiveIndex))); |
| 332 | } |
| 333 | |
| 334 | |
| 335 | public void addToPhenotypeCache(String genotypeID, DSEObjectives oc){ |
| 336 | this.phenotypeResultsCache.put(genotypeID, oc); |
| 337 | } |
| 338 | |
| 339 | public IProgressMonitor getMonitor() { |
| 340 | return this.monitor; |
| 341 | } |
| 342 | |
| 343 | } |
| 344 | |
| 345 | /** |
| 346 | * This decorator list is quite inefficient for any access operations, |
| 347 | * but it saves the effort to create a new Collection<Objective> for our |
| 348 | * getObjectives methods each time a candidate is evaluated. |
| 349 | * |
| 350 | * @author martens |
| 351 | * |
| 352 | */ |
| 353 | class ObjectiveAndEvaluatorListDecorator implements Collection<Objective> { |
| 354 | |
| 355 | private static final String NOT_MODIFIABLE_MSG = "Collection ObjectiveAndEvaluatorListDecorator is not modifiable."; |
| 356 | |
| 357 | private Collection<ObjectiveAndEvaluator> decoratedCollection; |
| 358 | |
| 359 | public ObjectiveAndEvaluatorListDecorator(final Collection<ObjectiveAndEvaluator> decoratedCollection){ |
| 360 | this.decoratedCollection = decoratedCollection; |
| 361 | } |
| 362 | |
| 363 | public int size(){ |
| 364 | return decoratedCollection.size(); |
| 365 | } |
| 366 | |
| 367 | @Override |
| 368 | public boolean add(Objective e) { |
| 369 | throw new UnsupportedOperationException(NOT_MODIFIABLE_MSG); |
| 370 | } |
| 371 | |
| 372 | @Override |
| 373 | public boolean addAll(Collection<? extends Objective> c) { |
| 374 | throw new UnsupportedOperationException(NOT_MODIFIABLE_MSG); |
| 375 | } |
| 376 | |
| 377 | @Override |
| 378 | public void clear() { |
| 379 | this.decoratedCollection.clear(); |
| 380 | } |
| 381 | |
| 382 | private ObjectiveAndEvaluator findObjective(Object o){ |
| 383 | if (!(o instanceof Objective)) |
| 384 | return null; |
| 385 | for (ObjectiveAndEvaluator oe : this.decoratedCollection) { |
| 386 | if (oe.getObjective().equals(o)) |
| 387 | return oe; |
| 388 | } |
| 389 | return null; |
| 390 | } |
| 391 | |
| 392 | @Override |
| 393 | public boolean contains(Object o) { |
| 394 | if (findObjective(o) != null) |
| 395 | return true; |
| 396 | |
| 397 | return false; |
| 398 | } |
| 399 | |
| 400 | @Override |
| 401 | public boolean containsAll(Collection<?> c) { |
| 402 | for (Object object : c) { |
| 403 | if (!contains(object)){ |
| 404 | return false; |
| 405 | } |
| 406 | } |
| 407 | return true; |
| 408 | } |
| 409 | |
| 410 | @Override |
| 411 | public boolean isEmpty() { |
| 412 | return decoratedCollection.isEmpty(); |
| 413 | } |
| 414 | |
| 415 | @Override |
| 416 | public Iterator<Objective> iterator() { |
| 417 | return new ObjectiveAndEvaluatorListIterator(this.decoratedCollection.iterator()); |
| 418 | } |
| 419 | |
| 420 | @Override |
| 421 | public boolean remove(Object o) { |
| 422 | ObjectiveAndEvaluator foundOE = findObjective(o); |
| 423 | if (foundOE == null){ |
| 424 | return false; |
| 425 | } else { |
| 426 | return decoratedCollection.remove(foundOE); |
| 427 | } |
| 428 | } |
| 429 | |
| 430 | @Override |
| 431 | public boolean removeAll(Collection<?> c) { |
| 432 | boolean removedAll = false; |
| 433 | for (Object object : c) { |
| 434 | removedAll = removedAll || this.remove(object); |
| 435 | } |
| 436 | return removedAll; |
| 437 | } |
| 438 | |
| 439 | /** |
| 440 | * Retains all elements in this collection that are contained in c or whose Objective is contained in c. |
| 441 | */ |
| 442 | @Override |
| 443 | public boolean retainAll(Collection<?> c) { |
| 444 | boolean modified = false; |
| 445 | Iterator<ObjectiveAndEvaluator> it = this.decoratedCollection.iterator(); |
| 446 | while (it.hasNext()){ |
| 447 | ObjectiveAndEvaluator oe = it.next(); |
| 448 | if (!c.contains(oe) && !c.contains(oe.getObjective())){ |
| 449 | modified = true; |
| 450 | it.remove(); |
| 451 | } |
| 452 | } |
| 453 | return modified; |
| 454 | } |
| 455 | |
| 456 | @Override |
| 457 | public Object[] toArray() { |
| 458 | Objective[] array = new Objective[this.decoratedCollection.size()]; |
| 459 | int i = 0; |
| 460 | for (ObjectiveAndEvaluator oe : this.decoratedCollection) { |
| 461 | array[i++] = oe.getObjective(); |
| 462 | } |
| 463 | |
| 464 | return array; |
| 465 | } |
| 466 | |
| 467 | /** |
| 468 | * Copied from LinkedList and modified. |
| 469 | */ |
| 470 | @SuppressWarnings("unchecked") |
| 471 | @Override |
| 472 | public <T> T[] toArray(T[] a) { |
| 473 | if (a.length < decoratedCollection.size()) |
| 474 | a = (T[])java.lang.reflect.Array.newInstance( |
| 475 | a.getClass().getComponentType(), decoratedCollection.size()); |
| 476 | |
| 477 | int i = 0; |
| 478 | Object[] result = a; |
| 479 | |
| 480 | for (ObjectiveAndEvaluator oe : decoratedCollection) { |
| 481 | result[i++] = oe.getObjective(); |
| 482 | } |
| 483 | |
| 484 | |
| 485 | if (a.length > decoratedCollection.size()){ |
| 486 | for(int j = i; j < a.length; j++){ |
| 487 | result[j] = null; |
| 488 | } |
| 489 | } |
| 490 | |
| 491 | return a; |
| 492 | |
| 493 | } |
| 494 | |
| 495 | } |
| 496 | |
| 497 | class ObjectiveAndEvaluatorListIterator implements Iterator<Objective>{ |
| 498 | |
| 499 | private Iterator<ObjectiveAndEvaluator> decoratedIterator; |
| 500 | |
| 501 | public ObjectiveAndEvaluatorListIterator(Iterator<ObjectiveAndEvaluator> it){ |
| 502 | this.decoratedIterator = it; |
| 503 | } |
| 504 | |
| 505 | @Override |
| 506 | public boolean hasNext() { |
| 507 | return decoratedIterator.hasNext(); |
| 508 | } |
| 509 | |
| 510 | @Override |
| 511 | public Objective next() { |
| 512 | return decoratedIterator.next().getObjective(); |
| 513 | } |
| 514 | |
| 515 | @Override |
| 516 | public void remove() { |
| 517 | decoratedIterator.remove(); |
| 518 | } |
| 519 | |
| 520 | } |
| 521 | |
| 522 | |
| 523 | |