src/Model/Model_Update.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
   2
   3 // File:        Model_Update.cxx
   4 // Created:     25 Jun 2014
   5 // Author:      Mikhail PONIKAROV
   6
   7 #include <Model_Update.h>
   8 #include <Model_Document.h>
   9 #include <Model_Data.h>
  10 #include <Model_Objects.h>
  11 #include <ModelAPI_Feature.h>
  12 #include <ModelAPI_Data.h>
  13 #include <ModelAPI_Document.h>
  14 #include <ModelAPI_Events.h>
  15 #include <ModelAPI_AttributeReference.h>
  16 #include <ModelAPI_AttributeRefList.h>
  17 #include <ModelAPI_AttributeRefAttr.h>
  18 #include <ModelAPI_AttributeSelection.h>
  19 #include <ModelAPI_AttributeSelectionList.h>
  20 #include <ModelAPI_Result.h>
  21 #include <ModelAPI_ResultPart.h>
  22 #include <ModelAPI_Validator.h>
  23 #include <ModelAPI_CompositeFeature.h>
  24 #include <ModelAPI_Session.h>
  25 #include <ModelAPI_Tools.h>
  26 #include <GeomDataAPI_Point.h>
  27 #include <GeomDataAPI_Point2D.h>
  28 #include <Events_Loop.h>
  29 #include <Events_LongOp.h>
  30 #include <Events_Error.h>
  31 #include <Config_PropManager.h>
  32
  33 using namespace std;
  34
  35 Model_Update MY_UPDATER_INSTANCE;  /// the only one instance initialized on load of the library
  36 // #define DEB_UPDATE
  37
  38 Model_Update::Model_Update()
  39 {
  40   Events_Loop* aLoop = Events_Loop::loop();
  41   static const Events_ID kChangedEvent = aLoop->eventByName("PreferenceChanged");
  42   aLoop->registerListener(this, kChangedEvent);
  43   static const Events_ID kRebuildEvent = aLoop->eventByName("Rebuild");
  44   aLoop->registerListener(this, kRebuildEvent);
  45   static const Events_ID kCreatedEvent = Events_Loop::loop()->eventByName(EVENT_OBJECT_CREATED);
  46   aLoop->registerListener(this, kCreatedEvent);
  47   static const Events_ID kUpdatedEvent = Events_Loop::loop()->eventByName(EVENT_OBJECT_UPDATED);
  48   aLoop->registerListener(this, kUpdatedEvent);
  49   static const Events_ID kMovedEvent = Events_Loop::loop()->eventByName(EVENT_OBJECT_MOVED);
  50   aLoop->registerListener(this, kMovedEvent);
  51   static const Events_ID kOpFinishEvent = aLoop->eventByName("FinishOperation");
  52   aLoop->registerListener(this, kOpFinishEvent);
  53   static const Events_ID kOpAbortEvent = aLoop->eventByName("AbortOperation");
  54   aLoop->registerListener(this, kOpAbortEvent);
  55   static const Events_ID kOpStartEvent = aLoop->eventByName("StartOperation");
  56   aLoop->registerListener(this, kOpStartEvent);
  57
  58   Config_PropManager::registerProp("Model update", "automatic_rebuild", "Rebuild immediately",
  59                                    Config_Prop::Boolean, "false");
  60   myIsAutomatic =
  61     Config_PropManager::findProp("Model update", "automatic_rebuild")->value() == "true";
  62   myIsParamUpdated = false;
  63   myIsFinish = false;
  64 }
  65
  66 void Model_Update::processEvent(const std::shared_ptr<Events_Message>& theMessage)
  67 {
  68   static Events_Loop* aLoop = Events_Loop::loop();
  69   static const Events_ID kChangedEvent = aLoop->eventByName("PreferenceChanged");
  70   static const Events_ID kRebuildEvent = aLoop->eventByName("Rebuild");
  71   static const Events_ID kCreatedEvent = aLoop->eventByName(EVENT_OBJECT_CREATED);
  72   static const Events_ID kUpdatedEvent = aLoop->eventByName(EVENT_OBJECT_UPDATED);
  73   static const Events_ID kMovedEvent = Events_Loop::loop()->eventByName(EVENT_OBJECT_MOVED);
  74   static const Events_ID kOpFinishEvent = aLoop->eventByName("FinishOperation");
  75   static const Events_ID kOpAbortEvent = aLoop->eventByName("AbortOperation");
  76   static const Events_ID kOpStartEvent = aLoop->eventByName("StartOperation");
  77   if (theMessage->eventID() == kChangedEvent) { // automatic and manual rebuild flag is changed
  78     bool aPropVal =
  79       Config_PropManager::findProp("Model update", "automatic_rebuild")->value() == "true";
  80     if (aPropVal != myIsAutomatic) { // something is changed
  81       myIsAutomatic = aPropVal;
  82       if (myIsAutomatic) // higher level of automatization => to rebuild
  83         processOperation(false);
  84     }
  85   } else if (theMessage->eventID() == kRebuildEvent) { // the rebuild command
  86     processOperation(true);
  87   } else if (theMessage->eventID() == kCreatedEvent || theMessage->eventID() == kUpdatedEvent ||
  88              theMessage->eventID() == kMovedEvent) {
  89     std::shared_ptr<ModelAPI_ObjectUpdatedMessage> aMsg =
  90         std::dynamic_pointer_cast<ModelAPI_ObjectUpdatedMessage>(theMessage);
  91     const std::set<ObjectPtr>& anObjs = aMsg->objects();
  92     std::set<ObjectPtr>::const_iterator anObjIter = anObjs.cbegin();
  93     bool isOnlyResults = true; // check that only results were changed: only redisplay is needed
  94     for(; anObjIter != anObjs.cend(); anObjIter++) {
  95       if (!std::dynamic_pointer_cast<ModelAPI_Result>(*anObjIter).get()) {
  96         isOnlyResults = false;
  97       }
  98       if ((*anObjIter)->groupName() == ModelAPI_ResultParameter::group()) {
  99         myIsParamUpdated = true;
 100       }
 101       // created objects are always must be up to date (python box feature)
 102       // and updated not in internal uptation chain
 103       myJustUpdated.insert(*anObjIter);
 104       #ifdef DEB_UPDATE
 105       if ((*anObjIter)->data() && (*anObjIter)->data()->isValid()) {
 106         std::cout<<"Add updated "<<(*anObjIter)->groupName()<<" "
 107           <<(*anObjIter)->data()->name()<<std::endl;
 108       }
 109       #endif
 110     }
 111     // this event is for solver update, not here, do not react immediately
 112     if (!isOnlyResults && !(theMessage->eventID() == kMovedEvent))
 113       processOperation(false);
 114   } else if (theMessage->eventID() == kOpFinishEvent || theMessage->eventID() == kOpAbortEvent ||
 115       theMessage->eventID() == kOpStartEvent) {
 116     myIsParamUpdated = false;
 117
 118     if (!(theMessage->eventID() == kOpStartEvent)) {
 119       myIsFinish = true;
 120       processOperation(true, theMessage->eventID() == kOpFinishEvent);
 121       myIsFinish = false;
 122     }
 123     // remove all macros before clearing all created
 124     std::set<ObjectPtr>::iterator anUpdatedIter = myWaitForFinish.begin();
 125     while(anUpdatedIter != myWaitForFinish.end()) {
 126       FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(*anUpdatedIter);
 127       if (aFeature.get()) {
 128         // remove macro on finish
 129         if (aFeature->isMacro()) {
 130           aFeature->document()->removeFeature(aFeature);
 131           myWaitForFinish.erase(aFeature);
 132         }
 133         // to avoid the map update problems on "remove"
 134         if (myWaitForFinish.find(aFeature) == myWaitForFinish.end()) {
 135           anUpdatedIter = myWaitForFinish.begin();
 136         } else {
 137           anUpdatedIter++;
 138         }
 139       } else {
 140         anUpdatedIter++;
 141       }
 142     }
 143     // in the end of transaction everything is updated, so clear the old objects (the only one
 144     // place where results are cleared)
 145     myJustUpdated.clear();
 146     myWaitForFinish.clear();
 147   }
 148 }
 149
 150 void Model_Update::processOperation(const bool theTotalUpdate, const bool theFinish)
 151 {
 152   if (theFinish) {
 153     // the hardcode (DBC asked): hide the sketch referenced by extrusion on apply
 154     std::set<std::shared_ptr<ModelAPI_Object> >::iterator aFIter;
 155     for(aFIter = myWaitForFinish.begin(); aFIter != myWaitForFinish.end(); aFIter++)
 156     {
 157       FeaturePtr aF = std::dynamic_pointer_cast<ModelAPI_Feature>(*aFIter);
 158       if (aF && aF->data()->isValid() && aF->getKind() == "Extrusion") {
 159         AttributeSelectionListPtr aBase = aF->selectionList("base");
 160         if (aBase.get()) {
 161           for(int a = aBase->size() - 1; a >= 0; a--) {
 162             ResultPtr aSketchRes = aBase->value(a)->context();
 163             if (aSketchRes) {
 164               aSketchRes->setDisplayed(false);
 165             }
 166           }
 167         }
 168       }
 169     }
 170   }
 171   // perform update of everything if needed
 172   if (!myIsExecuted) {
 173     #ifdef DEB_UPDATE
 174       std::cout<<"****** Start processing"<<std::endl;
 175     #endif
 176     myIsExecuted = true;
 177
 178     bool isAutomaticChanged = false;
 179
 180     if (theTotalUpdate && !myIsAutomatic) { // Apply button now works as "Rebuild"
 181       isAutomaticChanged = true;
 182       myIsAutomatic = true;
 183     }
 184
 185     // iterate all features in the root document to update each
 186     DocumentPtr aRootDoc = ModelAPI_Session::get()->moduleDocument();
 187     Model_Objects* anObjs = std::dynamic_pointer_cast<Model_Document>(aRootDoc)->objects();
 188     if (!anObjs) return;
 189     // two cycles: parameters are first to process
 190     FeaturePtr aFeatureIter = anObjs->firstFeature();
 191     std::set<FeaturePtr> aProcessedFeatures; // to avoid processing twice
 192     for (; aFeatureIter.get(); aFeatureIter = anObjs->nextFeature(aFeatureIter)) {
 193       if (aFeatureIter->groupName() == "Parameter")
 194         updateFeature(aFeatureIter, aProcessedFeatures);
 195     }
 196     aFeatureIter = anObjs->firstFeature();
 197     for (; aFeatureIter.get(); aFeatureIter = anObjs->nextFeature(aFeatureIter)) {
 198       if (aFeatureIter->groupName() != "Parameter")
 199         updateFeature(aFeatureIter, aProcessedFeatures);
 200     }
 201
 202     if (isAutomaticChanged) myIsAutomatic = false;
 203     myIsExecuted = false;
 204
 205     // flush to update display
 206     static Events_Loop* aLoop = Events_Loop::loop();
 207     static Events_ID EVENT_DISP = aLoop->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 208     aLoop->flush(EVENT_DISP);
 209     #ifdef DEB_UPDATE
 210       std::cout<<"****** End processing"<<std::endl;
 211     #endif
 212   }
 213 }
 214
 215 void Model_Update::updateFeature(FeaturePtr theFeature, std::set<FeaturePtr>& theProcessed)
 216 {
 217   // check all features this feature depended on (recursive call of updateFeature)
 218   static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 219
 220   if (theProcessed.find(theFeature) != theProcessed.end())
 221     return;
 222   theProcessed.insert(theFeature);
 223   if (theFeature->isDisabled())
 224     return;
 225
 226   #ifdef DEB_UPDATE
 227     std::cout<<"Update Feature "<<theFeature->name()<<std::endl;
 228   #endif
 229   CompositeFeaturePtr aCompos = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theFeature);
 230   // If automatice update is not needed and feature attributes were not updated right now,
 231   // do not execute it and do not update arguments.
 232   if (!myIsAutomatic && myJustUpdated.find(theFeature) == myJustUpdated.end() && !aCompos.get()) {
 233     // execute will be performed later, but some features may have not-result
 234     // presentations, so call update for them (like coincidence in the sketcher)
 235     static Events_ID EVENT_DISP = Events_Loop::loop()->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 236     ModelAPI_EventCreator::get()->sendUpdated(theFeature, EVENT_DISP);
 237     return;
 238   }
 239
 240   // Update selection and parameters attributes first, before sub-features analysis (sketch plane).
 241   updateArguments(theFeature);
 242
 243   // composite feature must be executed after sub-features execution
 244   if (aCompos) {
 245     // two cycles: parameters must be processed first
 246     for(int a = 0; a < aCompos->numberOfSubs(); a++) {
 247       FeaturePtr aSub = aCompos->subFeature(a);
 248       if (aSub->groupName() == "Parameter")
 249         updateFeature(aSub, theProcessed);
 250     }
 251     // number of subs can be changed in execution: like fillet
 252     for(int a = 0; a < aCompos->numberOfSubs(); a++) {
 253       FeaturePtr aSub = aCompos->subFeature(a);
 254       if (aSub->groupName() != "Parameter")
 255        updateFeature(aSub, theProcessed);
 256     }
 257   }
 258   // this checking must be after the composite feature sub-elements processing:
 259   // composite feature status may depend on it's subelements
 260   if (theFeature->data()->execState() == ModelAPI_StateInvalidArgument) {
 261     theFeature->eraseResults();
 262     redisplayWithResults(theFeature, ModelAPI_StateInvalidArgument); // result also must be updated
 263     return;
 264   }
 265
 266   bool aJustUpdated = myJustUpdated.find(theFeature) != myJustUpdated.end();
 267
 268   if (myIsAutomatic && theFeature->data()->execState() == ModelAPI_StateMustBeUpdated)
 269     aJustUpdated = true;
 270
 271   // On abort, undo or redo execute is not needed: results in document are updated automatically
 272   // But redisplay is needed: results are updated, must be also updated in the viewer.
 273   if (aJustUpdated &&
 274       !std::dynamic_pointer_cast<Model_Document>(theFeature->document())->executeFeatures()) {
 275     if (!theFeature->isPersistentResult()) { // not persistent must be re-executed on abort, etc.
 276       ModelAPI_ExecState aState = theFeature->data()->execState();
 277       if (aFactory->validate(theFeature)) {
 278         executeFeature(theFeature);
 279       } else {
 280         theFeature->eraseResults();
 281         redisplayWithResults(theFeature, ModelAPI_StateInvalidArgument); // result also must be updated
 282       }
 283     } else {
 284       redisplayWithResults(theFeature, ModelAPI_StateNothing);
 285       if (theFeature->data()->execState() == ModelAPI_StateMustBeUpdated) { // it is done (in the tree)
 286         theFeature->data()->execState(ModelAPI_StateDone);
 287       }
 288     }
 289     return;
 290   }
 291
 292   // execute feature if it must be updated
 293   if (theFeature->isPreviewNeeded() || myIsFinish) {
 294     if (aJustUpdated) {
 295       ModelAPI_ExecState aState = theFeature->data()->execState();
 296       if (aFactory->validate(theFeature)) {
 297         #ifdef DEB_UPDATE
 298           std::cout<<"Execute Feature "<<theFeature->name()<<std::endl;
 299         #endif
 300         executeFeature(theFeature);
 301       } else {
 302         theFeature->eraseResults();
 303         redisplayWithResults(theFeature, ModelAPI_StateInvalidArgument); // result also must be updated
 304       }
 305     }
 306   } else { // preview is not needed => make state Done
 307     if (theFeature->data()->execState() == ModelAPI_StateMustBeUpdated) {
 308       theFeature->data()->execState(ModelAPI_StateDone);
 309       if (aJustUpdated) // store that it must be updated on finish
 310         myJustUpdated.insert(theFeature);
 311     }
 312   }
 313 }
 314
 315 void Model_Update::redisplayWithResults(FeaturePtr theFeature, const ModelAPI_ExecState theState)
 316 {
 317   // make updated and redisplay all results
 318   static Events_ID EVENT_DISP = Events_Loop::loop()->eventByName(EVENT_OBJECT_TO_REDISPLAY);
 319   const std::list<std::shared_ptr<ModelAPI_Result> >& aResults = theFeature->results();
 320   std::list<std::shared_ptr<ModelAPI_Result> >::const_iterator aRIter = aResults.begin();
 321   for (; aRIter != aResults.cend(); aRIter++) {
 322     std::shared_ptr<ModelAPI_Result> aRes = *aRIter;
 323     aRes->data()->execState(theState);
 324     if (theFeature->data()->updateID() > aRes->data()->updateID()) {
 325       aRes->data()->setUpdateID(theFeature->data()->updateID());
 326     }
 327     ModelAPI_EventCreator::get()->sendUpdated(aRes, EVENT_DISP);
 328   }
 329   // to redisplay "presentable" feature (for ex. distance constraint)
 330   ModelAPI_EventCreator::get()->sendUpdated(theFeature, EVENT_DISP);
 331   theFeature->data()->execState(theState);
 332 }
 333
 334 /// Updates the state by the referenced object: if something bad with it, set state for this one
 335 ModelAPI_ExecState stateByReference(ObjectPtr theTarget, const ModelAPI_ExecState theCurrent)
 336 {
 337   if (theTarget) {
 338     ModelAPI_ExecState aRefState = theTarget->data()->execState();
 339     if (aRefState == ModelAPI_StateMustBeUpdated) {
 340       if (theCurrent == ModelAPI_StateDone)
 341         return ModelAPI_StateMustBeUpdated;
 342     } else if (aRefState != ModelAPI_StateDone) {
 343       return ModelAPI_StateInvalidArgument;
 344     }
 345   }
 346   return theCurrent;
 347 }
 348
 349 void Model_Update::updateArguments(FeaturePtr theFeature) {
 350   // perform this method also for disabled features: to make "not done" state for
 351   // features referenced to the active and modified features
 352
 353   static ModelAPI_ValidatorsFactory* aFactory = ModelAPI_Session::get()->validators();
 354
 355   ModelAPI_ExecState aState = theFeature->data()->execState();
 356   if (aState == ModelAPI_StateExecFailed) { // try again failed feature: issue 577
 357     aState = ModelAPI_StateMustBeUpdated;
 358   }
 359   if (aState == ModelAPI_StateInvalidArgument) // a chance to be corrected
 360     aState = ModelAPI_StateMustBeUpdated;
 361   // check the parameters state
 362   // Double
 363   std::list<AttributePtr> aDoubles =
 364     theFeature->data()->attributes(ModelAPI_AttributeDouble::typeId());
 365   std::list<AttributePtr>::iterator aDoubleIter = aDoubles.begin();
 366   for(; aDoubleIter != aDoubles.end(); aDoubleIter++) {
 367     AttributeDoublePtr aDouble =
 368       std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(*aDoubleIter);
 369     if (aDouble.get() && !aDouble->text().empty()) {
 370       if (myIsParamUpdated) {
 371         ModelAPI_AttributeEvalMessage::send(aDouble, this);
 372       }
 373       if (aDouble->expressionInvalid()) {
 374         aState = ModelAPI_StateInvalidArgument;
 375       }
 376     }
 377   }
 378   // Point
 379   {
 380     std::list<AttributePtr> anAttributes =
 381       theFeature->data()->attributes(GeomDataAPI_Point::typeId());
 382     std::list<AttributePtr>::iterator anIter = anAttributes.begin();
 383     for(; anIter != anAttributes.end(); anIter++) {
 384       AttributePointPtr aPointAttribute =
 385         std::dynamic_pointer_cast<GeomDataAPI_Point>(*anIter);
 386       if (aPointAttribute.get()) {
 387         if (myIsParamUpdated) {
 388           ModelAPI_AttributeEvalMessage::send(aPointAttribute, this);
 389         }
 390         if ((!aPointAttribute->textX().empty() && aPointAttribute->expressionInvalid(0)) ||
 391           (!aPointAttribute->textY().empty() && aPointAttribute->expressionInvalid(1)) ||
 392           (!aPointAttribute->textZ().empty() && aPointAttribute->expressionInvalid(2)))
 393           aState = ModelAPI_StateInvalidArgument;
 394       }
 395     }
 396   }
 397   // Point2D
 398   {
 399     std::list<AttributePtr> anAttributes =
 400       theFeature->data()->attributes(GeomDataAPI_Point2D::typeId());
 401     std::list<AttributePtr>::iterator anIter = anAttributes.begin();
 402     for(; anIter != anAttributes.end(); anIter++) {
 403       AttributePoint2DPtr aPoint2DAttribute =
 404         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(*anIter);
 405       if (aPoint2DAttribute.get()) {
 406         if (myIsParamUpdated) {
 407           ModelAPI_AttributeEvalMessage::send(aPoint2DAttribute, this);
 408         }
 409         if ((!aPoint2DAttribute->textX().empty() && aPoint2DAttribute->expressionInvalid(0)) ||
 410           (!aPoint2DAttribute->textY().empty() && aPoint2DAttribute->expressionInvalid(1)))
 411           aState = ModelAPI_StateInvalidArgument;
 412       }
 413     }
 414   }
 415
 416   //if (aState == ModelAPI_StateDone) {// all referenced objects are ready to be used
 417   //std::cout<<"Execute feature "<<theFeature->getKind()<<std::endl;
 418   // before execution update the selection attributes if any
 419   list<AttributePtr> aRefs =
 420     theFeature->data()->attributes(ModelAPI_AttributeSelection::typeId());
 421   list<AttributePtr>::iterator aRefsIter = aRefs.begin();
 422   for (; aRefsIter != aRefs.end(); aRefsIter++) {
 423     std::shared_ptr<ModelAPI_AttributeSelection> aSel =
 424       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(*aRefsIter);
 425     ObjectPtr aContext = aSel->context();
 426     // update argument onlt if the referenced object is changed
 427     if (aContext.get() && !aContext->isDisabled() &&
 428       (myJustUpdated.find(aContext) != myJustUpdated.end() ||
 429       aContext->data()->updateID() > theFeature->data()->updateID())) {
 430         if (aState == ModelAPI_StateDone)
 431           aState = ModelAPI_StateMustBeUpdated;
 432         if (!aSel->update()) { // this must be done on execution since it may be long operation
 433           if (!aFactory->isNotObligatory(theFeature->getKind(), theFeature->data()->id(aSel)) &&
 434             aFactory->isCase(theFeature, theFeature->data()->id(aSel)))
 435             aState = ModelAPI_StateInvalidArgument;
 436         }
 437     }
 438   }
 439   aRefs = theFeature->data()->attributes(ModelAPI_AttributeSelectionList::typeId());
 440   for (aRefsIter = aRefs.begin(); aRefsIter != aRefs.end(); aRefsIter++) {
 441     std::shared_ptr<ModelAPI_AttributeSelectionList> aSel =
 442       std::dynamic_pointer_cast<ModelAPI_AttributeSelectionList>(*aRefsIter);
 443     for(int a = aSel->size() - 1; a >= 0; a--) {
 444       std::shared_ptr<ModelAPI_AttributeSelection> aSelAttr =
 445         std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(aSel->value(a));
 446       if (aSelAttr) {
 447         ObjectPtr aContext = aSelAttr->context();
 448         // update argument onlt if the referenced object is changed
 449         if (aContext.get() && !aContext->isDisabled() &&
 450             (myJustUpdated.find(aContext) != myJustUpdated.end() ||
 451              aContext->data()->updateID() > theFeature->data()->updateID())) {
 452             if (aState == ModelAPI_StateDone)
 453               aState = ModelAPI_StateMustBeUpdated;
 454             if (!aSelAttr->update()) {
 455               if (!aFactory->isNotObligatory(
 456                 theFeature->getKind(), theFeature->data()->id(aSel)) &&
 457                 aFactory->isCase(theFeature, theFeature->data()->id(aSel)))
 458                 aState = ModelAPI_StateInvalidArgument;
 459             }
 460         }
 461       }
 462     }
 463   }
 464   // check all references: if referenced objects are updated, this object also must be updated
 465   // also check state of referenced objects: if they are not ready, inherit corresponding state
 466   std::list<std::pair<std::string, std::list<ObjectPtr> > > aRefsObj;
 467   std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(theFeature->data());
 468   aData->referencesToObjects(aRefsObj);
 469   std::list<std::pair<std::string, std::list<ObjectPtr> > >::iterator aRef = aRefsObj.begin();
 470   for(; aRef != aRefsObj.end(); aRef++) {
 471     std::list<ObjectPtr>::iterator aRefObj = aRef->second.begin();
 472     for(; aRefObj != aRef->second.end(); aRefObj++) {
 473       // if reference is null, it may mean that this reference is to other document
 474       // the does not supported by RefList: parameters may be recomputed
 475       if (!aRefObj->get() && theFeature->firstResult().get() &&
 476                theFeature->firstResult()->groupName() == ModelAPI_ResultParameter::group()) {
 477           if (aState == ModelAPI_StateDone)
 478             aState = ModelAPI_StateMustBeUpdated;
 479       } else if (myJustUpdated.find(*aRefObj) != myJustUpdated.end() ||
 480              (aRefObj->get() && (*aRefObj)->data()->updateID() > theFeature->data()->updateID())) {
 481           if (aState == ModelAPI_StateDone)
 482             aState = ModelAPI_StateMustBeUpdated;
 483       }
 484       aState = stateByReference(*aRefObj, aState);
 485     }
 486   }
 487   // composites sub-elements
 488   CompositeFeaturePtr aCompos = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theFeature);
 489   // composite feature must be executed after sub-features execution
 490   if (aCompos) {
 491     // number of subs can be changed in execution: like fillet
 492     for(int a = 0; a < aCompos->numberOfSubs(); a++) {
 493       FeaturePtr aSub = aCompos->subFeature(a);
 494       if (myJustUpdated.find(aSub) != myJustUpdated.end() ||
 495             (aSub.get() && aSub->data()->updateID() > theFeature->data()->updateID())) {
 496           if (aState == ModelAPI_StateDone)
 497             aState = ModelAPI_StateMustBeUpdated;
 498       }
 499     }
 500   }
 501
 502
 503   if (aState != ModelAPI_StateDone)
 504     theFeature->data()->execState(aState);
 505 }
 506
 507 void Model_Update::executeFeature(FeaturePtr theFeature)
 508 {
 509   // execute in try-catch to avoid internal problems of the feature
 510   ModelAPI_ExecState aState = ModelAPI_StateDone;
 511   theFeature->data()->execState(ModelAPI_StateDone);
 512   try {
 513     theFeature->execute();
 514     myJustUpdated.erase(theFeature);
 515     if (theFeature->data()->execState() != ModelAPI_StateDone) {
 516       aState = ModelAPI_StateExecFailed;
 517     } else {
 518       aState = ModelAPI_StateDone;
 519       myWaitForFinish.insert(theFeature);
 520     }
 521   } catch(...) {
 522     aState = ModelAPI_StateExecFailed;
 523     Events_Error::send(
 524       "Feature " + theFeature->getKind() + " has failed during the execution");
 525   }
 526   if (aState != ModelAPI_StateDone) {
 527     theFeature->eraseResults();
 528   }
 529   theFeature->data()->setUpdateID(ModelAPI_Session::get()->transactionID());
 530   redisplayWithResults(theFeature, aState);
 531 }