src/engine/Switch.cxx

   1 // Copyright (C) 2006-2014  CEA/DEN, EDF R&D
   2 //
   3 // This library is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU Lesser General Public
   5 // License as published by the Free Software Foundation; either
   6 // version 2.1 of the License, or (at your option) any later version.
   7 //
   8 // This library is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 // Lesser General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU Lesser General Public
  14 // License along with this library; if not, write to the Free Software
  15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  16 //
  17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  18 //
  19
  20 #include "Switch.hxx"
  21 #include "Visitor.hxx"
  22 #include "LinkInfo.hxx"
  23
  24 #include <iostream>
  25 #include <sstream>
  26 #include <cassert>
  27
  28 //#define _DEVDEBUG_
  29 #include "YacsTrace.hxx"
  30
  31 using namespace YACS::ENGINE;
  32 using namespace std;
  33
  34 const char Switch::DEFAULT_NODE_NAME[]="default";
  35 const int Switch::ID_FOR_DEFAULT_NODE=-1973012217;
  36 const char Switch::SELECTOR_INPUTPORT_NAME[]="select";
  37
  38 int CollectorSwOutPort::edGetNumberOfOutLinks() const
  39 {
  40   return 1;
  41 }
  42
  43 std::set<InPort *> CollectorSwOutPort::edSetInPort() const
  44 {
  45   set<InPort *> ret;
  46   if(_consumer)
  47     ret.insert(_consumer);
  48   return ret;
  49 }
  50
  51 bool CollectorSwOutPort::isAlreadyLinkedWith(InPort *with) const
  52 {
  53   set<InPort *> s;
  54   with->getAllRepresentants(s);
  55   return s.find(_consumer)!=s.end();
  56 }
  57
  58 std::string CollectorSwOutPort::getNameOfTypeOfCurrentInstance() const
  59 {
  60   return _className;
  61 }
  62
  63 void CollectorSwOutPort::edRemoveAllLinksLinkedWithMe() throw(YACS::Exception)
  64 {
  65   map<int, OutPort *>::iterator pt;
  66   if(_consumer)
  67     for(pt=_potentialProducers.begin();pt!=_potentialProducers.end();pt++)
  68       ((*pt).second)->removeInPort(_consumer,true);
  69 }
  70
  71 TypeOfChannel CollectorSwOutPort::getTypeOfChannel() const
  72 {
  73   return (*(_potentialProducers.begin())).second->getTypeOfChannel();
  74 }
  75
  76 void CollectorSwOutPort::getAllRepresented(std::set<OutPort *>& represented) const
  77 {
  78   map<int, OutPort *>::const_iterator pt;
  79   for(pt=_potentialProducers.begin();pt!=_potentialProducers.end();pt++)
  80     ((*pt).second)->getAllRepresented(represented);
  81 }
  82
  83 bool CollectorSwOutPort::addInPort(InPort *inPort) throw(YACS::Exception)
  84 {
  85   if(_currentProducer)
  86     {//a specific link is beeing done
  87       bool ret=_currentProducer->addInPort(inPort);
  88       _currentProducer=0;
  89       return ret;
  90     }
  91   else//global links asked
  92     for(map<int, OutPort *>::iterator iter=_potentialProducers.begin();iter!=_potentialProducers.end();iter++)
  93       (*iter).second->addInPort(inPort);
  94 }
  95
  96 int CollectorSwOutPort::removeInPort(InPort *inPort, bool forward) throw(YACS::Exception)
  97 {
  98   if(_currentProducer)
  99     {
 100       return _currentProducer->removeInPort(inPort,forward);
 101     }
 102   else
 103     throw Exception("CollectorSwOutputPort::edRemoveInputPort : internal error on link removal.");
 104   _currentProducer=0;
 105 }
 106
 107 /*!
 108  * \note : 'master' specifies the instance of Switch of which 'this' collects all of these direct
 109  *          or indirect outports going to the same port 'port' (which is out of scope of 'master').
 110  */
 111 CollectorSwOutPort::CollectorSwOutPort(Switch *master, InPort *port):OutPort("",master,port->edGetType()),
 112                                                                      DataPort("",master,port->edGetType()),
 113                                                                      Port(master),
 114                                                                      _consumer(port),_currentProducer(0)
 115 {
 116   _name="Representant_of_"; _name+=master->getName(); _name+="_for_inport_"; _name+=master->getRootNode()->getInPortName(_consumer);
 117 }
 118
 119 CollectorSwOutPort::CollectorSwOutPort(const CollectorSwOutPort& other, Switch *master):OutPort("",master,other.edGetType()),
 120                                                                                         DataPort("",master,other.edGetType()),
 121                                                                                         Port(master),
 122                                                                                         _consumer(0),_currentProducer(0)
 123 {
 124   _name=other._name;
 125   Switch *othSw=(Switch *)other._node;
 126   for(map<int, OutPort *>::const_iterator iter=other._potentialProducers.begin();iter!=other._potentialProducers.end();iter++)
 127     {
 128       string name=othSw->getOutPortName((*iter).second);
 129       _potentialProducers[(*iter).first]=master->getOutPort(name);
 130     }
 131 }
 132
 133 void CollectorSwOutPort::addPotentialProducerForMaster(OutPort *port)
 134 {
 135   int i=((Switch *)_node)->getRankOfNode(port->getNode());
 136   map<int, OutPort *>::iterator pt=_potentialProducers.find(i);
 137   if(pt==_potentialProducers.end())
 138     {
 139       _potentialProducers[i]=port;
 140       _currentProducer=port;
 141     }
 142   else
 143     {
 144       _currentProducer=(*pt).second;
 145       if(_currentProducer!=port)
 146         {
 147           string what("CollectorSwOutPort::addPotentialProducerForMaster : In switch node "); what+=_node->getName();
 148           what+=" for input named \'"; what+=_consumer->getName(); what+="\' the output "; what+=_currentProducer->getName();
 149           what+=" already got out for case of label ";
 150           what+=Switch::getRepresentationOfCase((*pt).first);
 151           throw Exception(what);
 152         }
 153     }
 154   _className=port->getNameOfTypeOfCurrentInstance();
 155 }
 156
 157 bool CollectorSwOutPort::removePotentialProducerForMaster()
 158 {
 159   int i;
 160   map<int, OutPort *>::iterator result;
 161   for(result=_potentialProducers.begin();result!=_potentialProducers.end();result++)
 162     if((*result).second==_currentProducer)
 163       {
 164         i=(*result).first;
 165         break;
 166       }
 167   if(result==_potentialProducers.end())
 168     {
 169       ostringstream stream; stream << "CollectorSwOutPort::removePotentialProducerForMaster : link from the branch whith id ";
 170       stream << i << " not defined";
 171       throw Exception(stream.str());
 172     }
 173   if((*result).second!=_currentProducer)
 174     {
 175       ostringstream stream; stream << "CollectorSwOutPort::removePotentialProducerForMaster : link from the branch whith id ";
 176       stream << i << " defined but the output specified is not compatible";
 177       throw Exception(stream.str());
 178     }
 179   _potentialProducers.erase(result);
 180   return _potentialProducers.empty();
 181 }
 182
 183 bool CollectorSwOutPort::checkManagementOfPort(OutPort *port) throw(YACS::Exception)
 184 {
 185   for(map<int, OutPort *>::iterator iter=_potentialProducers.begin();iter!=_potentialProducers.end();iter++)
 186     if((*iter).second==port)
 187       {
 188         _currentProducer=port;
 189         return _potentialProducers.size()==1;
 190       }
 191   throw Exception("CollectorSwOutPort::checkManagementOfPort : unexported port");
 192 }
 193
 194 /*!
 195  * Called by Switch::checkCFLinks.
 196  */
 197 void CollectorSwOutPort::checkConsistency(LinkInfo& info) const
 198 {
 199   if(((Switch *)_node)->getNbOfCases()!=_potentialProducers.size())
 200     info.pushErrSwitch((CollectorSwOutPort *)this);
 201   for(map<int, OutPort *>::const_iterator iter=_potentialProducers.begin();iter!=_potentialProducers.end();iter++)
 202     (*iter).second->checkConsistency(info);
 203 }
 204
 205 /*!
 206  * Called by LinkInfo::getErrRepr to have a comprehensible message on throw.
 207  * When called, typically checkCompletenessOfCases has detected that some potential producers were laking...
 208  */
 209 void CollectorSwOutPort::getHumanReprOfIncompleteCases(std::ostream& stream) const
 210 {
 211   set<int> lackingCases;
 212   for(map< int ,Node * >::const_iterator iter=((Switch *)_node)->_mapOfNode.begin();iter!=((Switch *)_node)->_mapOfNode.end();iter++)
 213     {
 214       if(_potentialProducers.find((*iter).first)==_potentialProducers.end())
 215         lackingCases.insert((*iter).first);
 216     }
 217   ostringstream streamForExc;
 218   stream << "For link to " <<  _consumer->getName() << " of node " << _consumer->getNode()->getName()
 219          << " the cases of switch node named " << _node->getName()
 220          << " do not define links for following cases ids :";
 221   for(set<int>::iterator iter=lackingCases.begin();iter!=lackingCases.end();iter++)
 222       stream << Switch::getRepresentationOfCase(*iter) << " ";
 223   stream << endl;
 224 }
 225
 226 FakeNodeForSwitch::FakeNodeForSwitch(Switch *sw, bool normalFinish, bool internalError):ElementaryNode("thisIsAFakeNode"),
 227                                                                                         _sw(sw),
 228                                                                                         _normalFinish(normalFinish),
 229                                                                                         _internalError(internalError)
 230 {
 231   _state=YACS::TOACTIVATE;
 232   _father=_sw->getFather();
 233 }
 234
 235 FakeNodeForSwitch::FakeNodeForSwitch(const FakeNodeForSwitch& other):ElementaryNode(other),_sw(0),
 236                                                                      _normalFinish(false),
 237                                                                      _internalError(true)
 238 {
 239 }
 240
 241 Node *FakeNodeForSwitch::simpleClone(ComposedNode *father, bool editionOnly) const
 242 {
 243   return new FakeNodeForSwitch(*this);
 244 }
 245
 246 void FakeNodeForSwitch::exForwardFailed()
 247 {
 248   _sw->exForwardFailed();
 249 }
 250
 251 void FakeNodeForSwitch::exForwardFinished()
 252 {
 253   _sw->exForwardFinished();
 254 }
 255
 256 void FakeNodeForSwitch::execute()
 257 {
 258   if(!_normalFinish)
 259     throw Exception("");//only to trigger ABORT on Executor
 260 }
 261
 262 void FakeNodeForSwitch::aborted()
 263 {
 264   if(_internalError)
 265     _sw->_state!=YACS::INTERNALERR;
 266   else
 267     _sw->setState(YACS::ERROR);
 268 }
 269
 270 void FakeNodeForSwitch::finished()
 271 {
 272   _sw->setState(YACS::DONE);
 273 }
 274
 275 /*! \class YACS::ENGINE::Switch
 276  *  \brief Control node that emulates the C switch
 277  *
 278  *  \ingroup Nodes
 279  */
 280
 281 Switch::Switch(const Switch& other, ComposedNode *father, bool editionOnly):StaticDefinedComposedNode(other,father),_condition(other._condition,this),
 282                                                                             _undispatchableNotificationNode(0)
 283 {
 284   for(map<int,Node *>::const_iterator iter=other._mapOfNode.begin();iter!=other._mapOfNode.end();iter++)
 285     _mapOfNode[(*iter).first]=(*iter).second->clone(this,editionOnly);
 286   if(!editionOnly)
 287     for(map<InPort *, CollectorSwOutPort * >::const_iterator iter2=other._outPortsCollector.begin();iter2!=other._outPortsCollector.end();iter2++)
 288       {
 289         CollectorSwOutPort *newCol=new CollectorSwOutPort(*((*iter2).second),this);
 290         _alreadyExistingCollectors.push_back(newCol);
 291       }
 292 }
 293
 294 Switch::Switch(const std::string& name):StaticDefinedComposedNode(name),_condition(SELECTOR_INPUTPORT_NAME,this,Runtime::_tc_int),_undispatchableNotificationNode(0)
 295 {
 296 }
 297
 298 Switch::~Switch()
 299 {
 300   if(_undispatchableNotificationNode)delete _undispatchableNotificationNode;
 301
 302   for(map< int , Node * >::iterator iter=_mapOfNode.begin();iter!=_mapOfNode.end();iter++)
 303     delete (*iter).second;
 304   for(map<InPort *, CollectorSwOutPort * >::iterator iter2=_outPortsCollector.begin();iter2!=_outPortsCollector.end();iter2++)
 305     delete (*iter2).second;
 306   for(vector<CollectorSwOutPort *>::iterator iter3=_alreadyExistingCollectors.begin();iter3!=_alreadyExistingCollectors.end();iter3++)
 307     delete (*iter3);
 308 }
 309
 310 Node *Switch::simpleClone(ComposedNode *father, bool editionOnly) const
 311 {
 312   return new Switch(*this,father,editionOnly);
 313 }
 314
 315 void Switch::exUpdateState()
 316 {
 317   DEBTRACE("Switch::exUpdateState " << _state);
 318   if(_state == YACS::DISABLED)
 319     return;
 320   if(_inGate.exIsReady())
 321     {
 322       setState(YACS::ACTIVATED);
 323       if(_condition.isEmpty())
 324         _undispatchableNotificationNode=new FakeNodeForSwitch(this,false,true);
 325       else
 326         {
 327           map< int , Node * >::iterator iter=_mapOfNode.find(_condition.getIntValue());
 328           if(iter==_mapOfNode.end())
 329             {
 330               iter=_mapOfNode.find(ID_FOR_DEFAULT_NODE);
 331               if(iter==_mapOfNode.end())
 332                 {
 333                   bool normalFinish=getAllOutPortsLeavingCurrentScope().empty();
 334                   delete _undispatchableNotificationNode;
 335                   _undispatchableNotificationNode=new FakeNodeForSwitch(this,normalFinish);
 336                 }
 337               else
 338                 ((*iter).second)->exUpdateState();
 339             }
 340           else
 341             ((*iter).second)->exUpdateState();
 342         }
 343     }
 344 }
 345
 346 void Switch::init(bool start)
 347 {
 348   DEBTRACE("Switch::init " << start);
 349   StaticDefinedComposedNode::init(start);
 350   int i=0;
 351   for(map< int , Node * >::iterator iter=_mapOfNode.begin();iter!=_mapOfNode.end();iter++, i++)
 352     {
 353       if(!(*iter).second)
 354         {
 355           ostringstream stream;
 356           stream << "Switch::init : initialization failed due to unitialized branch of id " << (*iter).first;
 357           throw Exception(stream.str());
 358         }
 359       ((*iter).second)->init(start);
 360     }
 361 }
 362
 363 void Switch::getReadyTasks(std::vector<Task *>& tasks)
 364 {
 365   /*
 366    * To change the way ComposedNode state is handled, uncomment the following line
 367    * see Bloc::getReadyTasks
 368    */
 369   if(_state==YACS::TOACTIVATE) setState(YACS::ACTIVATED);
 370   if(_state==YACS::TOACTIVATE || _state==YACS::ACTIVATED)
 371     {
 372       map< int , Node * >::iterator iter=_mapOfNode.find(_condition.getIntValue());
 373       if(iter!=_mapOfNode.end())
 374         ((*iter).second)->getReadyTasks(tasks);
 375       else
 376         {
 377           iter=_mapOfNode.find(ID_FOR_DEFAULT_NODE);
 378           if(iter!=_mapOfNode.end())
 379             (*iter).second->getReadyTasks(tasks);//Default Node is returned
 380           else
 381             if(_undispatchableNotificationNode)
 382               _undispatchableNotificationNode->getReadyTasks(tasks);
 383             else
 384               throw Exception("Switch::getReadyTasks : internal error");
 385         }
 386     }
 387 }
 388
 389 list<Node *> Switch::edGetDirectDescendants() const
 390 {
 391   list<Node *> ret;
 392   for(map< int , Node * >::const_iterator iter=_mapOfNode.begin();iter!=_mapOfNode.end();iter++)
 393     if((*iter).second)
 394       ret.push_back((*iter).second);
 395   return ret;
 396 }
 397
 398 int Switch::getNumberOfInputPorts() const
 399 {
 400   return StaticDefinedComposedNode::getNumberOfInputPorts()+1;
 401 }
 402
 403 void Switch::edRemoveChild(Node *node) throw(YACS::Exception)
 404 {
 405   map< int , Node * >::iterator iter=_mapOfNode.begin();
 406   for(;iter!=_mapOfNode.end();iter++)
 407     if(node==(*iter).second)
 408       {
 409         edReleaseCase((*iter).first);
 410         return;
 411       }
 412   ostringstream what; what << "Switch::edRemoveChild : node with name " << node->getName() << " is not a direct child of Switch node " << _name;
 413   throw Exception(what.str());
 414 }
 415
 416 std::list<InputPort *> Switch::getSetOfInputPort() const
 417 {
 418   list<InputPort *> ret=StaticDefinedComposedNode::getSetOfInputPort();
 419   ret.push_back((InputPort *)&_condition);
 420   return ret;
 421 }
 422
 423
 424 std::list<InputPort *> Switch::getLocalInputPorts() const
 425 {
 426   list<InputPort *> ret=StaticDefinedComposedNode::getLocalInputPorts();
 427   ret.push_back((InputPort *)&_condition);
 428   return ret;
 429 }
 430 OutPort *Switch::getOutPort(const std::string& name) const throw(YACS::Exception)
 431 {
 432   for(map<InPort *, CollectorSwOutPort * >::const_iterator iter=_outPortsCollector.begin();iter!=_outPortsCollector.end();iter++)
 433     if(name==(*iter).second->getName())
 434       return (*iter).second;
 435   for(vector<CollectorSwOutPort *>::const_iterator iter2=_alreadyExistingCollectors.begin();iter2!=_alreadyExistingCollectors.end();iter2++)
 436     if(name==(*iter2)->getName())
 437       return *iter2;
 438   return StaticDefinedComposedNode::getOutPort(name);
 439 }
 440
 441 InputPort *Switch::getInputPort(const std::string& name) const throw(YACS::Exception)
 442 {
 443   if(name==SELECTOR_INPUTPORT_NAME)
 444     return (InputPort *)&_condition;
 445   return StaticDefinedComposedNode::getInputPort(name);
 446 }
 447
 448 Node *Switch::getChildByShortName(const std::string& name) const throw(YACS::Exception)
 449 {
 450   if(name==DEFAULT_NODE_NAME)
 451     {
 452       map< int , Node * >::const_iterator iter=_mapOfNode.find(ID_FOR_DEFAULT_NODE);
 453       if(iter!=_mapOfNode.end())
 454         return (Node *)((*iter).second);
 455       else
 456         {
 457           string what("Switch::getChildByShortName : no default node defined for switch of name "); what+=getName();
 458           throw Exception(what);
 459         }
 460     }
 461   for(map< int , Node * >::const_iterator iter=_mapOfNode.begin();iter!=_mapOfNode.end();iter++)
 462     {
 463       if(name==((*iter).second)->getQualifiedName())
 464         return (*iter).second;
 465     }
 466   string what("node "); what+= name ; what+=" is not a child of node switch "; what += getName();
 467   throw Exception(what);
 468 }
 469
 470 Node *Switch::edSetDefaultNode(Node *node)
 471 {
 472   return edSetNode(ID_FOR_DEFAULT_NODE,node);
 473 }
 474
 475 Node *Switch::edReleaseDefaultNode() throw(YACS::Exception)
 476 {
 477   return edReleaseCase(ID_FOR_DEFAULT_NODE);
 478 }
 479
 480 Node *Switch::edReleaseCase(int caseId) throw(YACS::Exception)
 481 {
 482   map< int , Node * >::iterator iter=_mapOfNode.find(caseId);
 483   if(iter==_mapOfNode.end())
 484     {
 485       string what("Switch::edReleaseCase : the case # "); what+=getRepresentationOfCase(caseId);  what+=" is not set yet.";
 486       throw Exception(what);
 487     }
 488   else
 489     {
 490       Node *ret=(*iter).second;
 491       StaticDefinedComposedNode::edRemoveChild(ret);
 492       _mapOfNode.erase(iter);
 493       modified();
 494       return ret;
 495     }
 496 }
 497
 498 Node *Switch::edGetNode(int caseId)
 499 {
 500   if (!_mapOfNode.count(caseId)) return 0;
 501   return _mapOfNode[caseId];
 502 }
 503
 504
 505 /*!
 506  * \param caseId : the case ID chosen to place 'node'
 507  * \param node   : the node for the specified 'caseId'
 508  * \return : If an old node with id equal to 'caseId' exists before, this old node is returned so that to be deallocated.
 509  *           0 is returned if caseId is a new ID.
 510  *  \b WARNING : 'node' is held by 'this' after call, whereas returned node is no more held.
 511  */
 512 Node *Switch::edSetNode(int caseId, Node *node) throw(YACS::Exception)
 513 {
 514   if(!node)
 515     throw Exception("Switch::edSetNode : null node cannot be set as a case in switch node");
 516   if(node->_father!=0)
 517     throw Exception("Switch::edSetNode : node already held by another father");
 518   checkNoCrossHierachyWith(node);
 519   node->_father=this;
 520   map< int , Node * >::iterator iter=_mapOfNode.find(caseId);
 521   if(iter==_mapOfNode.end())
 522     {
 523       _mapOfNode[caseId]=node;
 524       modified();
 525       return 0;
 526     }
 527   else
 528     {
 529       if(node!=(*iter).second)
 530         {
 531           Node *ret=(*iter).second;
 532           (*iter).second=node;
 533           modified();
 534           return ret;
 535         }
 536     }
 537 }
 538
 539 //! Change the case of a node
 540 /*!
 541  *  \param oldCase : the case value to change
 542  *  \param newCase : the new value to set
 543  *  raise an exception if the old case does not exist or if the new case already exists
 544  */
 545 void Switch::edChangeCase(int oldCase, int newCase)
 546 {
 547   std::map< int , Node * >::iterator iter=_mapOfNode.find(oldCase);
 548   if(iter==_mapOfNode.end())
 549     {
 550       //the case does not exists
 551       throw Exception("Switch::edChangeCase : case does not exist");
 552     }
 553   iter=_mapOfNode.find(newCase);
 554   if(iter != _mapOfNode.end())
 555     {
 556       //the new case exists
 557       throw Exception("Switch::edChangeCase : new case exists");
 558     }
 559   Node* node=_mapOfNode[oldCase];
 560   _mapOfNode.erase(oldCase);
 561   _mapOfNode[newCase]=node;
 562   modified();
 563 }
 564
 565 int Switch::getMaxCase()
 566 {
 567   int aCase = 0;
 568   map<int, Node*>::const_iterator it = _mapOfNode.begin();
 569   for(; it != _mapOfNode.end(); ++it)
 570     if ((*it).first > aCase)
 571       aCase = (*it).first;
 572   return aCase;
 573 }
 574
 575 bool Switch::edAddChild(Node *node) throw(YACS::Exception)
 576 {
 577   int aCase = getMaxCase() + 1;
 578   DEBTRACE(aCase);
 579   bool ret = edSetNode(aCase, node);
 580   DEBTRACE(ret);
 581   return ret;
 582 }
 583
 584 YACS::Event Switch::updateStateOnFinishedEventFrom(Node *node)
 585 {
 586   setState(YACS::DONE);
 587   return YACS::FINISH;//notify to father node that 'this' has becomed finished.
 588 }
 589
 590 std::set<InPort *> Switch::getAllInPortsComingFromOutsideOfCurrentScope() const
 591 {
 592   set<InPort *> ret=StaticDefinedComposedNode::getAllInPortsComingFromOutsideOfCurrentScope();
 593   set<OutPort *> temp2=_condition.edSetOutPort();
 594   for(set<OutPort *>::iterator iter3=temp2.begin();iter3!=temp2.end();iter3++)
 595     if(!isInMyDescendance((*iter3)->getNode()))
 596       {
 597         ret.insert((InPort *)&_condition);
 598         break;
 599       }
 600   return ret;
 601 }
 602
 603 void Switch::checkCFLinks(const std::list<OutPort *>& starts, InputPort *end, unsigned char& alreadyFed, bool direction, LinkInfo& info) const
 604 {
 605   map<InPort *, CollectorSwOutPort * >::const_iterator iter=_outPortsCollector.find(end);
 606   if(iter!=_outPortsCollector.end())
 607     {
 608       set<OutPort *> represented;
 609       (*iter).second->getAllRepresented(represented);
 610       list<OutPort *> others;
 611       for(list<OutPort *>::const_iterator iter2=starts.begin();iter2!=starts.end();iter2++)
 612         if(represented.find(*iter2)==represented.end())
 613           others.push_back(*iter2);
 614       if(others.empty())
 615         alreadyFed=FED_ST;
 616       else
 617         StaticDefinedComposedNode::checkCFLinks(others,end,alreadyFed,direction,info);//should never happend;
 618     }
 619   else
 620     StaticDefinedComposedNode::checkCFLinks(starts,end,alreadyFed,direction,info);
 621 }
 622
 623 void Switch::checkControlDependancy(OutPort *start, InPort *end, bool cross,
 624                                     std::map < ComposedNode *,  std::list < OutPort * > >& fw,
 625                                     std::vector<OutPort *>& fwCross,
 626                                     std::map< ComposedNode *, std::list < OutPort *> >& bw,
 627                                     LinkInfo& info) const
 628 {
 629   throw Exception("Switch::checkControlDependancy : a link was dectected between 2 cases of a switch. Impossible !");
 630 }
 631
 632 void Switch::checkNoCyclePassingThrough(Node *node) throw(YACS::Exception)
 633 {
 634   throw Exception("Switch::checkNoCyclePassingThrough : uncorrect control flow link relative to switch");
 635 }
 636
 637 void Switch::checkLinkPossibility(OutPort *start, const std::list<ComposedNode *>& pointsOfViewStart,
 638                                   InPort *end, const std::list<ComposedNode *>& pointsOfViewEnd) throw(YACS::Exception)
 639 {
 640   throw Exception("Switch::checkLinkPossibility : A link between 2 different cases of a same Switch requested -> Impossible");
 641 }
 642
 643 void Switch::buildDelegateOf(std::pair<OutPort *, OutPort *>& port, InPort *finalTarget, const std::list<ComposedNode *>& pointsOfView)
 644 {
 645   map<InPort *, CollectorSwOutPort * >::iterator result=_outPortsCollector.find(finalTarget);
 646   CollectorSwOutPort *newCollector;
 647   if(result!=_outPortsCollector.end())
 648     newCollector=(*result).second;
 649   else
 650     {
 651       newCollector=new CollectorSwOutPort(this,finalTarget);
 652       newCollector->edSetType((port.first)->edGetType());
 653       _outPortsCollector[finalTarget]=newCollector;
 654     }
 655   newCollector->addPotentialProducerForMaster(port.first);
 656   port.second=newCollector;
 657   port.first=newCollector;
 658 }
 659
 660 void Switch::getDelegateOf(std::pair<OutPort *, OutPort *>& port, InPort *finalTarget, const std::list<ComposedNode *>& pointsOfView) throw(YACS::Exception)
 661 {
 662   map<InPort *, CollectorSwOutPort * >::iterator iter=_outPortsCollector.find(finalTarget);
 663   if(iter==_outPortsCollector.end())
 664     {
 665       string what("Switch::getDelegateOf : not exported OuputPort with name "); what+=(port.first)->getName(); what+=" for target inport of name ";
 666       what+=finalTarget->getName();
 667       throw Exception(what);
 668     }
 669   ((*iter).second)->checkManagementOfPort(port.first);
 670   port.second=(*iter).second;
 671   port.first=(*iter).second;
 672 }
 673
 674 void Switch::releaseDelegateOf(OutPort *portDwn, OutPort *portUp, InPort *finalTarget, const std::list<ComposedNode *>& pointsOfView) throw(YACS::Exception)
 675 {
 676   set<OutPort *> repr;
 677   portDwn->getAllRepresented(repr);
 678   if(repr.size()==1)
 679     {
 680       CollectorSwOutPort *portCasted=dynamic_cast<CollectorSwOutPort *>(portUp);
 681       if(portCasted->removePotentialProducerForMaster())//normally always true
 682         {
 683           delete portCasted;
 684           _outPortsCollector.erase(finalTarget);
 685         }
 686     }
 687 }
 688
 689 int Switch::getNbOfCases() const
 690 {
 691   return _mapOfNode.size();
 692 }
 693
 694 int Switch::getRankOfNode(Node *node) const
 695 {
 696   Node *directSon=isInMyDescendance(node);
 697   for(map< int , Node * >::const_iterator iter=_mapOfNode.begin();iter!=_mapOfNode.end();iter++)
 698     if((*iter).second==directSon)
 699       return (*iter).first;
 700   throw Exception("Switch::getRankOfNode : node not in switch");
 701 }
 702
 703 string Switch::getRepresentationOfCase(int i)
 704 {
 705   if(i!=ID_FOR_DEFAULT_NODE)
 706     {
 707       ostringstream stream;
 708       stream << i;
 709       return stream.str();
 710     }
 711   else
 712     return DEFAULT_NODE_NAME;
 713 }
 714
 715 //! Return the effective state of a node in the context of this switch (its father)
 716 /*!
 717  * \param node: the node which effective state is queried
 718  * \return the effective node state
 719  */
 720 YACS::StatesForNode Switch::getEffectiveState(const Node* node) const
 721 {
 722   YACS::StatesForNode effectiveState=Node::getEffectiveState();
 723   if(effectiveState==YACS::READY)
 724     return YACS::READY;
 725   if(effectiveState==YACS::TOACTIVATE)
 726     return YACS::READY;
 727   if(effectiveState==YACS::DISABLED)
 728     return YACS::DISABLED;
 729
 730   return node->getState();
 731 }
 732 YACS::StatesForNode Switch::getEffectiveState() const
 733 {
 734   return Node::getEffectiveState();
 735 }
 736
 737 void Switch::writeDot(std::ostream &os) const
 738 {
 739   os << "  subgraph cluster_" << getId() << "  {\n" ;
 740   for(map<int,Node*>::const_iterator iter=_mapOfNode.begin();iter!=_mapOfNode.end();iter++)
 741     {
 742       Node* n=(*iter).second;
 743       n->writeDot(os);
 744       os << getId() << " -> " << n->getId() << ";\n";
 745     }
 746   os << "}\n" ;
 747   os << getId() << "[fillcolor=\"" ;
 748   YACS::StatesForNode state=Node::getEffectiveState();
 749   os << getColorState(state);
 750   os << "\" label=\"" << "Switch:" ;
 751   os << getQualifiedName() <<"\"];\n";
 752 }
 753
 754 std::string Switch::getMyQualifiedName(const Node *directSon) const
 755 {
 756   string id=getCaseId(directSon);
 757   id+=directSon->getName();
 758   return id;
 759 }
 760
 761 std::string Switch::getCaseId(const Node *node) const throw(YACS::Exception)
 762 {
 763   const char sep='_';
 764   map<int, Node*>::const_iterator iter;
 765   for (iter = _mapOfNode.begin(); iter != _mapOfNode.end(); iter++)
 766       if (iter->second == node)
 767         {
 768           stringstream a;
 769           if (iter->first == Switch::ID_FOR_DEFAULT_NODE)
 770             a << DEFAULT_NODE_NAME << sep;
 771           else if (iter->first <0)
 772             a << "m" << -iter->first << sep;
 773           else a  << "p" << iter->first << sep;
 774           return a.str();
 775         }
 776   string what("node "); what+= node->getName() ; what+=" is not a child of node "; what += getName();
 777   throw Exception(what);
 778 }
 779
 780 void Switch::accept(Visitor *visitor)
 781 {
 782   visitor->visitSwitch(this);
 783 }