src/SALOMESDS/SALOMESDS_DataScopeServer.cxx

   1 // Copyright (C) 2007-2020  CEA/DEN, EDF R&D, OPEN CASCADE
   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 // Author : Anthony GEAY (EDF R&D)
  20
  21 #include "SALOMESDS_DataScopeServer.hxx"
  22 #include "SALOMESDS_DataServerManager.hxx"
  23 #include "SALOMESDS_PickelizedPyObjRdOnlyServer.hxx"
  24 #include "SALOMESDS_PickelizedPyObjRdExtServer.hxx"
  25 #include "SALOMESDS_PickelizedPyObjRdWrServer.hxx"
  26 #include "SALOMESDS_PickelizedPyObjRdExtInitServer.hxx"
  27 #include "SALOMESDS_TrustTransaction.hxx"
  28 #include "SALOMESDS_KeyWaiter.hxx"
  29 #include "SALOMESDS_Transaction.hxx"
  30 #include "SALOME_NamingService.hxx"
  31 #include "SALOMESDS_Exception.hxx"
  32
  33 #include <sstream>
  34 #include <iterator>
  35 #include <algorithm>
  36
  37 // agy : awful, to be factorized with ContainerManager.
  38 #ifndef WIN32
  39 #include <unistd.h>
  40 #else
  41 #include <process.h>
  42 #define getpid _getpid
  43 #endif
  44
  45 using namespace SALOMESDS;
  46
  47 std::size_t DataScopeServerBase::COUNTER=0;
  48
  49 void DataScopeKiller::shutdown()
  50 {
  51   Py_Finalize();
  52   _orb->shutdown(0);
  53 }
  54
  55 RequestSwitcher::RequestSwitcher(CORBA::ORB_ptr orb, DataScopeServerTransaction *ds):RequestSwitcherBase(orb),_ds(ds)
  56 {
  57 }
  58
  59 SALOME::StringVec *RequestSwitcher::listVars()
  60 {
  61   return _ds->listVars();
  62 }
  63
  64 SALOME::ByteVec *RequestSwitcher::fetchSerializedContent(const char *varName)
  65 {
  66   return _ds->fetchSerializedContent(varName);
  67 }
  68
  69 void RequestSwitcher::fetchAndGetAccessOfVar(const char *varName, CORBA::String_out access, SALOME::ByteVec_out data)
  70 {
  71   return _ds->fetchAndGetAccessOfVar(varName,access,data);
  72 }
  73
  74 DataScopeServerBase::DataScopeServerBase(const SALOME_CPythonHelper *pyHelper, CORBA::ORB_ptr orb, SALOME::DataScopeKiller_var killer, const std::string& scopeName):_pyHelper(pyHelper),_orb(CORBA::ORB::_duplicate(orb)),_name(scopeName),_killer(killer)
  75 {
  76 }
  77
  78 DataScopeServerBase::DataScopeServerBase(const DataScopeServerBase& other):omniServant(other),ServantBase(other),_pyHelper(other._pyHelper),_name(other._name),_vars(other._vars),_killer(other._killer)
  79 {
  80 }
  81
  82 DataScopeServerBase::~DataScopeServerBase()
  83 {
  84   for(std::list< std::pair< SALOME::BasicDataServer_var, BasicDataServer * > >::const_iterator it=_vars.begin();it!=_vars.end();it++)
  85     {
  86        BasicDataServer *obj((*it).second);
  87        if(obj)
  88          {
  89            obj->decrRef();
  90          }
  91     }
  92 }
  93
  94 /*!
  95  * Called remotely -> to protect against throw
  96  */
  97 void DataScopeServerBase::ping()
  98 {
  99 }
 100
 101 /*!
 102  * Called remotely -> to protect against throw
 103  */
 104 char *DataScopeServerBase::getScopeName()
 105 {
 106   return CORBA::string_dup(_name.c_str());
 107 }
 108
 109 /*!
 110  * Called remotely -> to protect against throw
 111  */
 112 SALOME::StringVec *DataScopeServerBase::listVars()
 113 {
 114   SALOME::StringVec *ret(new SALOME::StringVec);
 115   std::size_t sz(_vars.size());
 116   ret->length((CORBA::ULong)sz); //!< TODO: size_t to CORBA::ULong
 117   std::list< std::pair< SALOME::BasicDataServer_var, BasicDataServer * > >::iterator it(_vars.begin());
 118   for(std::size_t i=0;i<sz;it++,i++)
 119     {
 120       BasicDataServer *obj((*it).second);
 121       std::string name(obj->getVarNameCpp());
 122       (*ret)[(CORBA::ULong)i]=CORBA::string_dup(name.c_str()); //!< TODO: size_t to CORBA::ULong
 123     }
 124   return ret;
 125 }
 126
 127 CORBA::Boolean DataScopeServerBase::existVar(const char *varName)
 128 {
 129   std::list< std::pair< SALOME::BasicDataServer_var, BasicDataServer * > >::const_iterator it(_vars.begin());
 130   for(;it!=_vars.end();it++)
 131     if((*it).second->getVarNameCpp()==varName)
 132       return true;
 133   return false;
 134 }
 135
 136 SALOME::BasicDataServer_ptr DataScopeServerBase::retrieveVarInternal(const char *varName)
 137 {
 138   std::list< std::pair< SALOME::BasicDataServer_var, BasicDataServer * > >::const_iterator it0(retrieveVarInternal3(varName));
 139   return SALOME::BasicDataServer::_duplicate((*it0).first);
 140 }
 141
 142 BasicDataServer *DataScopeServerBase::retrieveVarInternal2(const std::string& varName)
 143 {
 144   std::list< std::pair< SALOME::BasicDataServer_var, BasicDataServer * > >::const_iterator it0(retrieveVarInternal3(varName));
 145   return (*it0).second;
 146 }
 147
 148 void DataScopeServerBase::deleteVar(const char *varName)
 149 {
 150   std::string varNameCpp(varName);
 151   std::vector<std::string> allNames(getAllVarNames());
 152   std::vector<std::string>::iterator it(std::find(allNames.begin(),allNames.end(),varNameCpp));
 153   if(it==allNames.end())
 154     {
 155       std::ostringstream oss; oss << "DataScopeServerBase::deleteVar : name \"" << varNameCpp << "\" does not exists ! Possibilities are :";
 156       std::copy(allNames.begin(),allNames.end(),std::ostream_iterator<std::string>(oss,", "));
 157       throw Exception(oss.str());
 158     }
 159   std::size_t pos(std::distance(allNames.begin(),it));
 160   std::list< std::pair< SALOME::BasicDataServer_var, BasicDataServer * > >::iterator it0(_vars.begin());
 161   for(std::size_t ii=0;ii<pos;ii++,it0++);
 162   (*it0).second->decrRef();
 163   _vars.erase(it0);
 164 }
 165
 166 CORBA::Boolean DataScopeServerBase::shutdownIfNotHostedByDSM(SALOME::DataScopeKiller_out killer)
 167 {
 168   SALOME_NamingService ns(_orb);
 169   CORBA::Object_var obj(ns.Resolve(DataServerManager::NAME_IN_NS));
 170   SALOME::DataServerManager_var dsm(SALOME::DataServerManager::_narrow(obj));
 171   if(CORBA::is_nil(dsm))
 172     throw Exception("Unable to reach in the NS the unique DataServerManager instance of the Session !");
 173   // destroy ref in the naming service
 174   std::string fullScopeName(SALOMESDS::DataServerManager::CreateAbsNameInNSFromScopeName(_name));
 175   ns.Destroy_Name(fullScopeName.c_str());
 176   // establish if dsm and this shared the same POA. If yes dsm and this are collocated !
 177   PortableServer::ServantBase *ret(0);
 178   try
 179     {
 180       ret=_poa->reference_to_servant(dsm);
 181     }
 182   catch(...) { ret=0; }
 183   //
 184   if(!ret)
 185     {
 186       enforcedRelease();
 187       killer=SALOME::DataScopeKiller::_duplicate(_killer);
 188       return true;
 189     }
 190   else
 191     {
 192       ret->_remove_ref();
 193       enforcedRelease();
 194       killer=SALOME::DataScopeKiller::_duplicate(_killer);
 195       return false;
 196     }
 197 }
 198
 199 SALOME::ByteVec *DataScopeServerBase::fetchSerializedContent(const char *varName)
 200 {
 201   BasicDataServer *var(retrieveVarInternal2(varName));
 202   PickelizedPyObjServer *varc(dynamic_cast<PickelizedPyObjServer *>(var));
 203   if(!varc)
 204     {
 205       std::ostringstream oss; oss << "DataScopeServerBase::fetchSerializedContent : var \"" << varName << "\" exists but it is not serialized !";
 206       throw Exception(oss.str());
 207     }
 208   return varc->fetchSerializedContent();
 209 }
 210
 211 SALOME::SeqOfByteVec *DataScopeServerBase::getAllKeysOfVarWithTypeDict(const char *varName)
 212 {
 213   BasicDataServer *var(retrieveVarInternal2(varName));
 214   PickelizedPyObjServer *varc(dynamic_cast<PickelizedPyObjServer *>(var));
 215   if(!varc)
 216     {
 217       std::ostringstream oss; oss << "DataScopeServerBase::getAllKeysOfVarWithTypeDict : var \"" << varName << "\" exists but it is not serialized !";
 218       throw Exception(oss.str());
 219     }
 220   if(!varc->isDict())
 221     {
 222       std::ostringstream oss; oss << "DataScopeServerBase::getAllKeysOfVarWithTypeDict : var \"" << varName << "\" exists but it is not a PyDict !";
 223       throw Exception(oss.str());
 224     }
 225   PyObject *keys(PyDict_Keys(varc->getPyObj()));
 226   if(!PyList_Check(keys))
 227     {
 228       std::ostringstream oss; oss << "DataScopeServerBase::getAllKeysOfVarWithTypeDict : var \"" << varName << "\" has keys but not of type list !";
 229       throw Exception(oss.str());
 230     }
 231   Py_ssize_t sz(PyList_Size(keys));
 232   SALOME::SeqOfByteVec *ret(new SALOME::SeqOfByteVec);
 233   ret->length((CORBA::ULong)sz); //!< TODO: convert Py_ssize_t in CORBA::ULong
 234   for(Py_ssize_t i=0;i<sz;i++)
 235     {
 236       PyObject *item(PyList_GetItem(keys,i));
 237       Py_XINCREF(item);
 238       std::string pickel(varc->pickelize(item));//item consumed
 239       PickelizedPyObjServer::FromCppToByteSeq(pickel,(*ret)[(CORBA::ULong)i]); //!< TODO: convert Py_ssize_t in CORBA::ULong
 240     }
 241   Py_XDECREF(keys);
 242   return ret;
 243 }
 244
 245 SALOME::ByteVec *DataScopeServerBase::getValueOfVarWithTypeDict(const char *varName, const SALOME::ByteVec& constKey)
 246 {
 247   BasicDataServer *var(retrieveVarInternal2(varName));
 248   PickelizedPyObjServer *varc(dynamic_cast<PickelizedPyObjServer *>(var));
 249   if(!varc)
 250     {
 251       std::ostringstream oss; oss << "DataScopeServerBase::getValueOfVarWithTypeDict : var \"" << varName << "\" exists but it is not serialized !";
 252       throw Exception(oss.str());
 253     }
 254   if(!varc->isDict())
 255     {
 256       std::ostringstream oss; oss << "DataScopeServerBase::getValueOfVarWithTypeDict : var \"" << varName << "\" exists but it is not a PyDict !";
 257       throw Exception(oss.str());
 258     }
 259   //
 260   std::string keyCpp;
 261   PickelizedPyObjServer::FromByteSeqToCpp(constKey,keyCpp);
 262   SALOME::AutoPyRef key(PickelizedPyObjServer::GetPyObjFromPickled(keyCpp,this));
 263   PyObject *value(PyDict_GetItem(varc->getPyObj(),key.get()));//borrowed
 264   if(!value)
 265     {
 266       std::ostringstream oss; oss << "DataScopeServerBase::getValueOfVarWithTypeDict : var \"" << varName << "\" seems to not have key specified !";
 267       throw Exception(oss.str());
 268     }
 269   Py_XINCREF(value);
 270   std::string ret(PickelizedPyObjServer::Pickelize(value,this));//value is consumed
 271   return PickelizedPyObjServer::FromCppToByteSeq(ret);
 272 }
 273
 274 void DataScopeServerBase::takeANap(CORBA::Double napDurationInSec)
 275 {
 276   if(napDurationInSec<0.)
 277     throw Exception("DataScopeServerBase::takeANap : negative value !");
 278 #ifndef WIN32
 279   struct timespec req,rem;
 280   long nbSec((long)napDurationInSec);
 281   double remainTime(napDurationInSec-(double)nbSec);
 282   req.tv_sec=nbSec;
 283   req.tv_nsec=(long)(remainTime*1000000.);
 284   int ret(nanosleep(&req,&rem));
 285   if(ret!=0)
 286     throw Exception("DataScopeServerBase::takeANap : nap not finished as expected !");
 287 #else
 288   throw Exception("DataScopeServerBase::takeANap : not implemented for Windows !");
 289 #endif
 290 }
 291
 292 void DataScopeServerBase::registerToSalomePiDict() const
 293 {
 294   _pyHelper->registerToSalomePiDict("SALOME_DataScopeServerBase",getpid());
 295 }
 296
 297 void DataScopeServerBase::setPOA(PortableServer::POA_var poa)
 298 {
 299   _poa=poa;
 300 }
 301
 302 void DataScopeServerBase::registerInNS(SALOME::DataScopeServerBase_ptr ptr)
 303 {
 304   std::string fullScopeName(SALOMESDS::DataServerManager::CreateAbsNameInNSFromScopeName(_name));
 305   SALOME_NamingService ns(_orb);
 306   ns.Register(ptr,fullScopeName.c_str());
 307 }
 308
 309 std::string DataScopeServerBase::BuildTmpVarNameFrom(const std::string& varName)
 310 {
 311   std::ostringstream oss;
 312   oss << varName << "@" << COUNTER++;
 313   return oss.str();
 314 }
 315
 316 std::vector< std::string > DataScopeServerBase::getAllVarNames() const
 317 {
 318   std::size_t sz(_vars.size());
 319   std::vector<std::string> ret(sz);
 320   std::list< std::pair< SALOME::BasicDataServer_var, BasicDataServer * > >::const_iterator it(_vars.begin());
 321   for(std::size_t i=0;i<sz;it++,i++)
 322     ret[i]=(*it).second->getVarNameCpp();
 323   return ret;
 324 }
 325
 326 bool DataScopeServerBase::isExistingVar(const std::string& varName) const
 327 {
 328   std::vector<std::string> allNames(getAllVarNames());
 329   std::vector<std::string>::iterator it(std::find(allNames.begin(),allNames.end(),varName));
 330   return it!=allNames.end();
 331 }
 332
 333 void DataScopeServerBase::checkNotAlreadyExistingVar(const std::string& varName) const
 334 {
 335   if(isExistingVar(varName))
 336     {
 337       std::ostringstream oss; oss << "DataScopeServerBase::checkNotAlreadyExistingVar : name \"" << varName << "\" already exists !";
 338       throw Exception(oss.str());
 339     }
 340 }
 341
 342 void DataScopeServerBase::checkExistingVar(const std::string& varName) const
 343 {
 344   std::vector<std::string> allNames(getAllVarNames());
 345   std::vector<std::string>::iterator it(std::find(allNames.begin(),allNames.end(),varName));
 346   if(it==allNames.end())
 347     {
 348       std::ostringstream oss; oss << "DataScopeServerBase::checkExistingVar : name \"" << varName << "\" does not exist !";
 349       throw Exception(oss.str());
 350     }
 351 }
 352
 353 PickelizedPyObjServer *DataScopeServerBase::checkVarExistingAndDict(const std::string& varName)
 354 {
 355   checkExistingVar(varName);
 356   BasicDataServer *var(retrieveVarInternal2(varName.c_str()));
 357   PickelizedPyObjServer *ret(dynamic_cast<PickelizedPyObjServer *>(var));
 358   if(!ret)
 359     {
 360       std::ostringstream oss; oss << "TransactionAddKeyValueHard::prepareRollBackInCaseOfFailure : var \"" << varName << "\"exists but it is not serialized !";
 361       throw Exception(oss.str());
 362     }
 363   if(!ret->isDict())
 364     {
 365       std::ostringstream oss; oss << "TransactionAddKeyValueHard::prepareRollBackInCaseOfFailure : var \"" << varName << "\"exists but it is not a Dict !";
 366       throw Exception(oss.str());
 367     }
 368   return ret;
 369 }
 370
 371 void DataScopeServerBase::moveStatusOfVarFromRdWrToRdOnly(const std::string& varName)
 372 {
 373   std::list< std::pair< SALOME::BasicDataServer_var, BasicDataServer * > >::iterator it(retrieveVarInternal4(varName));
 374   std::pair< SALOME::BasicDataServer_var, BasicDataServer * >& p(*it);
 375   PickelizedPyObjRdWrServer *varc(dynamic_cast<PickelizedPyObjRdWrServer *>(p.second));
 376   if(!varc)
 377     throw Exception("DataScopeServerBase::moveStatusOfVarFromRdWrToRdOnly : var is not a RdWr !");
 378   PyObject *pyobj(varc->getPyObj()); Py_XINCREF(pyobj);
 379   PickelizedPyObjRdOnlyServer *newVar(new PickelizedPyObjRdOnlyServer(this,varName,pyobj));
 380   CORBA::Object_var obj(newVar->activate());
 381   SALOME::BasicDataServer_var obj2(SALOME::BasicDataServer::_narrow(obj));
 382   p.first=obj2; p.second=newVar;
 383   varc->decrRef();
 384 }
 385
 386 void DataScopeServerBase::moveStatusOfVarFromRdOnlyToRdWr(const std::string& varName)
 387 {
 388   std::list< std::pair< SALOME::BasicDataServer_var, BasicDataServer * > >::iterator it(retrieveVarInternal4(varName));
 389   std::pair< SALOME::BasicDataServer_var, BasicDataServer * >& p(*it);
 390   PickelizedPyObjRdOnlyServer *varc(dynamic_cast<PickelizedPyObjRdOnlyServer *>(p.second));
 391   if(!varc)
 392     throw Exception("DataScopeServerBase::moveStatusOfVarFromRdOnlyToRdWr : var is not a RdWr !");
 393   PyObject *pyobj(varc->getPyObj()); Py_XINCREF(pyobj);
 394   PickelizedPyObjRdWrServer *newVar(new PickelizedPyObjRdWrServer(this,varName,pyobj));
 395   CORBA::Object_var obj(newVar->activate());
 396   SALOME::BasicDataServer_var obj2(SALOME::BasicDataServer::_narrow(obj));
 397   p.first=obj2; p.second=newVar;
 398   varc->decrRef();
 399 }
 400
 401 void DataScopeServerBase::moveStatusOfVarFromRdExtOrRdExtInitToRdExtInit(const std::string& varName)
 402 {
 403   std::list< std::pair< SALOME::BasicDataServer_var, BasicDataServer * > >::iterator it(retrieveVarInternal4(varName));
 404   std::pair< SALOME::BasicDataServer_var, BasicDataServer * >& p(*it);
 405   PickelizedPyObjRdExtServer *varc0(dynamic_cast<PickelizedPyObjRdExtServer *>(p.second));
 406   PickelizedPyObjRdExtInitServer *varc1(dynamic_cast<PickelizedPyObjRdExtInitServer *>(p.second));
 407   if(!varc0 && !varc1)
 408     throw Exception("DataScopeServerBase::moveStatusOfVarFromRdExtOrRdExtInitToRdExtInit : var is neither RdExt nor RdExtInit !");
 409   if(varc0)
 410     {
 411       PickelizedPyObjRdExtInitServer *newVar(varc0->buildInitInstanceFrom(varName));
 412       newVar->incrNbClients();
 413       CORBA::Object_var obj(newVar->activate());
 414       SALOME::BasicDataServer_var obj2(SALOME::BasicDataServer::_narrow(obj));
 415       p.first=obj2; p.second=newVar;
 416       varc0->decrRef();
 417     }
 418   else
 419     varc1->incrNbClients();
 420 }
 421
 422 void DataScopeServerBase::moveStatusOfVarFromRdExtOrRdExtInitToRdExt(const std::string& varName)
 423 {
 424   std::list< std::pair< SALOME::BasicDataServer_var, BasicDataServer * > >::iterator it(retrieveVarInternal4(varName));
 425   std::pair< SALOME::BasicDataServer_var, BasicDataServer * >& p(*it);
 426   PickelizedPyObjRdExtInitServer *varc0(dynamic_cast<PickelizedPyObjRdExtInitServer *>(p.second));
 427   PickelizedPyObjRdExtServer *varc1(dynamic_cast<PickelizedPyObjRdExtServer *>(p.second));
 428   if(!varc0 && !varc1)
 429     throw Exception("DataScopeServerBase::moveStatusOfVarFromRdExtOrRdExtInitToRdExt : var is not a RdExtInit !");
 430   if(varc0)
 431     {
 432       if(varc0->decrNbClients())
 433         {
 434           PickelizedPyObjRdExtServer *newVar(varc0->buildStdInstanceFrom(varName));
 435           CORBA::Object_var obj(newVar->activate());
 436           SALOME::BasicDataServer_var obj2(SALOME::BasicDataServer::_narrow(obj));
 437           p.first=obj2; p.second=newVar;
 438           varc0->decrRef();
 439         }
 440     }
 441 }
 442
 443 std::list< std::pair< SALOME::BasicDataServer_var, BasicDataServer * > >::const_iterator DataScopeServerBase::retrieveVarInternal3(const std::string& varName) const
 444 {
 445   std::vector<std::string> allNames(getAllVarNames());
 446   std::vector<std::string>::iterator it(std::find(allNames.begin(),allNames.end(),varName));
 447   if(it==allNames.end())
 448     {
 449       std::ostringstream oss; oss << "DataScopeServerBase::retrieveVarInternal3 : name \"" << varName << "\" does not exists ! Possibilities are :";
 450       std::copy(allNames.begin(),allNames.end(),std::ostream_iterator<std::string>(oss,", "));
 451       throw Exception(oss.str());
 452     }
 453   std::size_t pos(std::distance(allNames.begin(),it));
 454   std::list< std::pair< SALOME::BasicDataServer_var, BasicDataServer * > >::const_iterator it0(_vars.begin());
 455   for(std::size_t i=0;i<pos;i++,it0++);
 456   return it0;
 457 }
 458
 459 std::list< std::pair< SALOME::BasicDataServer_var, BasicDataServer * > >::iterator DataScopeServerBase::retrieveVarInternal4(const std::string& varName)
 460 {
 461   std::vector<std::string> allNames(getAllVarNames());
 462   std::vector<std::string>::iterator it(std::find(allNames.begin(),allNames.end(),varName));
 463   if(it==allNames.end())
 464     {
 465       std::ostringstream oss; oss << "DataScopeServerBase::retrieveVarInternal4 : name \"" << varName << "\" does not exists ! Possibilities are :";
 466       std::copy(allNames.begin(),allNames.end(),std::ostream_iterator<std::string>(oss,", "));
 467       throw Exception(oss.str());
 468     }
 469   std::size_t pos(std::distance(allNames.begin(),it));
 470   std::list< std::pair< SALOME::BasicDataServer_var, BasicDataServer * > >::iterator it0(_vars.begin());
 471   for(std::size_t i=0;i<pos;i++,it0++);
 472   return it0;
 473 }
 474
 475 ///////
 476
 477 DataScopeServer::DataScopeServer(const SALOME_CPythonHelper *pyHelper, CORBA::ORB_ptr orb, SALOME::DataScopeKiller_var killer, const std::string& scopeName):DataScopeServerBase(pyHelper,orb,killer,scopeName)
 478 {
 479 }
 480
 481 DataScopeServer::DataScopeServer(const DataScopeServer& other):omniServant(other),ServantBase(other),DataScopeServerBase(other)
 482 {
 483 }
 484
 485 SALOME::PickelizedPyObjRdOnlyServer_ptr DataScopeServer::createRdOnlyVar(const char *varName, const SALOME::ByteVec& constValue)
 486 {
 487   std::string varNameCpp(varName);
 488   checkNotAlreadyExistingVar(varNameCpp);
 489   PickelizedPyObjRdOnlyServer *tmp(new PickelizedPyObjRdOnlyServer(this,varNameCpp,constValue));
 490   CORBA::Object_var ret(tmp->activate());
 491   std::pair< SALOME::BasicDataServer_var, BasicDataServer * > p(SALOME::BasicDataServer::_narrow(ret),tmp);
 492   _vars.push_back(p);
 493   return SALOME::PickelizedPyObjRdOnlyServer::_narrow(ret);
 494 }
 495
 496 SALOME::PickelizedPyObjRdExtServer_ptr DataScopeServer::createRdExtVar(const char *varName, const SALOME::ByteVec& constValue)
 497 {
 498   std::string varNameCpp(varName);
 499   checkNotAlreadyExistingVar(varNameCpp);
 500   PickelizedPyObjRdExtServer *tmp(new PickelizedPyObjRdExtServer(this,varNameCpp,constValue));
 501   CORBA::Object_var ret(tmp->activate());
 502   std::pair< SALOME::BasicDataServer_var, BasicDataServer * > p(SALOME::BasicDataServer::_narrow(ret),tmp);
 503   _vars.push_back(p);
 504   return SALOME::PickelizedPyObjRdExtServer::_narrow(ret);
 505 }
 506
 507 SALOME::PickelizedPyObjRdWrServer_ptr DataScopeServer::createRdWrVar(const char *typeName, const char *varName)
 508 {
 509   std::string varNameCpp(varName),typeNameCpp(typeName);
 510   checkNotAlreadyExistingVar(varNameCpp);
 511   PickelizedPyObjRdWrServer *tmp(new PickelizedPyObjRdWrServer(this,typeNameCpp,varNameCpp));
 512   CORBA::Object_var ret(tmp->activate());
 513   std::pair< SALOME::BasicDataServer_var, BasicDataServer * > p(SALOME::BasicDataServer::_narrow(ret),tmp);
 514   _vars.push_back(p);
 515   return SALOME::PickelizedPyObjRdWrServer::_narrow(ret);
 516 }
 517
 518 DataScopeServer::~DataScopeServer()
 519 {
 520 }
 521
 522 ////////
 523
 524 DataScopeServerTransaction::DataScopeServerTransaction(const SALOME_CPythonHelper *pyHelper, CORBA::ORB_ptr orb, SALOME::DataScopeKiller_var killer, const std::string& scopeName):DataScopeServerBase(pyHelper,orb,killer,scopeName)
 525 {
 526   CORBA::Object_var obj(_orb->resolve_initial_references("RootPOA"));
 527   PortableServer::POA_var poa(PortableServer::POA::_narrow(obj));
 528   //
 529   PortableServer::POAManager_var mgr(poa->the_POAManager());
 530   CORBA::PolicyList policies;
 531   policies.length(1);
 532   PortableServer::ThreadPolicy_var threadPol(poa->create_thread_policy(PortableServer::ORB_CTRL_MODEL));
 533   policies[0]=PortableServer::ThreadPolicy::_duplicate(threadPol);
 534   PortableServer::POA_var poa2(poa->create_POA("POAForWaiters",mgr,policies));
 535   threadPol->destroy();
 536   //
 537   _poa_for_key_waiter=poa2;
 538 }
 539
 540 DataScopeServerTransaction::DataScopeServerTransaction(const DataScopeServerTransaction& other):omniServant(other),ServantBase(other),DataScopeServerBase(other),_poa_for_key_waiter(other.getPOA4KeyWaiter())
 541 {
 542 }
 543
 544 char *DataScopeServerTransaction::getAccessOfVar(const char *varName)
 545 {
 546   std::string varNameCpp(varName);
 547   checkExistingVar(varNameCpp);
 548   BasicDataServer *var(retrieveVarInternal2(varName));
 549   if(!var)
 550     throw Exception("DataScopeServerTransaction::getAccessOfVar : variable is NULL !");
 551   PickelizedPyObjServer *varc(dynamic_cast<PickelizedPyObjServer *>(var));
 552   if(!varc)
 553     throw Exception("DataScopeServerTransaction::getAccessOfVar : variable is not of type PickelizedPyObjServer !");
 554   std::string ret(varc->getAccessStr());
 555   return CORBA::string_dup(ret.c_str());
 556 }
 557
 558 /*!
 559  * This method is here to retrieve atomically accessStr and picklization.
 560  */
 561 void DataScopeServerTransaction::fetchAndGetAccessOfVar(const char *varName, CORBA::String_out access, SALOME::ByteVec_out data)
 562 {
 563   access=getAccessOfVar(varName);
 564   data=fetchSerializedContent(varName);
 565 }
 566
 567 void DataScopeServerTransaction::createRdOnlyVarInternal(const std::string& varName, const SALOME::ByteVec& constValue)
 568 {
 569   checkNotAlreadyExistingVar(varName);
 570   PickelizedPyObjRdOnlyServer *tmp(new PickelizedPyObjRdOnlyServer(this,varName,constValue));
 571   CORBA::Object_var ret(tmp->activate());
 572   std::pair< SALOME::BasicDataServer_var, BasicDataServer * > p(SALOME::BasicDataServer::_narrow(ret),tmp);
 573   _vars.push_back(p);
 574 }
 575
 576 void DataScopeServerTransaction::createRdExtVarInternal(const std::string& varName, const SALOME::ByteVec& constValue)
 577 {
 578   checkNotAlreadyExistingVar(varName);
 579   PickelizedPyObjRdExtServer *tmp(new PickelizedPyObjRdExtServer(this,varName,constValue));
 580   CORBA::Object_var ret(tmp->activate());
 581   std::pair< SALOME::BasicDataServer_var, BasicDataServer * > p(SALOME::BasicDataServer::_narrow(ret),tmp);
 582   _vars.push_back(p);
 583 }
 584
 585 void DataScopeServerTransaction::createRdExtVarFreeStyleInternal(const std::string& varName, const SALOME::ByteVec& constValue, std::string&& compareFuncContent, SALOME::AutoPyRef&& compareFunc)
 586 {
 587   if(!isExistingVar(varName))
 588     {
 589       PickelizedPyObjRdExtFreeStyleServer *tmp(new PickelizedPyObjRdExtFreeStyleServer(this,varName,constValue,std::move(compareFuncContent),std::move(compareFunc)));
 590       CORBA::Object_var ret(tmp->activate());
 591       std::pair< SALOME::BasicDataServer_var, BasicDataServer * > p(SALOME::BasicDataServer::_narrow(ret),tmp);
 592       _vars.push_back(p);
 593     }
 594   else
 595     {
 596       BasicDataServer *ds(retrieveVarInternal2(varName));
 597       if(!ds)
 598         {
 599           std::ostringstream oss;
 600           oss << "DataScopeServerTransaction::createRdExtVarFreeStyleInternal : internal error 1 for varname \"" << varName << "\"!";
 601           throw Exception(oss.str());
 602         }
 603       Sha1Keeper *ds2(dynamic_cast<Sha1Keeper *>(ds));
 604       if(!ds2)
 605         {
 606           std::ostringstream oss;
 607           oss << "DataScopeServerTransaction::createRdExtVarFreeStyleInternal : varname \"" << varName << "\" already exists with a non Sha1Keeper type !";
 608           throw Exception(oss.str());
 609         }
 610       PickelizedPyObjServer *ds3(dynamic_cast<PickelizedPyObjServer *>(ds));
 611       if(!ds3)
 612         {
 613           std::ostringstream oss;
 614           oss << "DataScopeServerTransaction::createRdExtVarFreeStyleInternal : varname \"" << varName << "\" already exists with a non PickelizedPyObjServer type !";
 615           throw Exception(oss.str());
 616         }
 617       std::vector<unsigned char> constValueAsCpp;
 618       Transaction::FromByteSeqToVB(constValue,constValueAsCpp);
 619       SALOME::AutoPyRef newObj(PickelizedPyObjServer::GetPyObjFromPickled(constValueAsCpp,this));
 620       if(newObj.isNull())
 621         {
 622           std::ostringstream oss;
 623           oss << "DataScopeServerTransaction::createRdExtVarFreeStyleInternal : varname \"" << varName << "\" already exists but input pickelized object is not loadable !";
 624           throw Exception(oss.str());
 625         }
 626       ds2->checkSame(varName,compareFuncContent,ds3->getPyObj(),newObj);
 627     }
 628 }
 629
 630 void DataScopeServerTransaction::createRdExtInitVarInternal(const std::string& varName, const SALOME::ByteVec& constValue)
 631 {
 632   checkNotAlreadyExistingVar(varName);
 633   PickelizedPyObjRdExtInitServer *tmp(new PickelizedPyObjRdExtInitServer(this,varName,constValue));
 634   CORBA::Object_var ret(tmp->activate());
 635   std::pair< SALOME::BasicDataServer_var, BasicDataServer * > p(SALOME::BasicDataServer::_narrow(ret),tmp);
 636   _vars.push_back(p);
 637 }
 638
 639 void DataScopeServerTransaction::createRdWrVarInternal(const std::string& varName, const SALOME::ByteVec& constValue)
 640 {
 641   checkNotAlreadyExistingVar(varName);
 642   PickelizedPyObjRdWrServer *tmp(new PickelizedPyObjRdWrServer(this,varName,constValue));
 643   CORBA::Object_var ret(tmp->activate());
 644   std::pair< SALOME::BasicDataServer_var, BasicDataServer * > p(SALOME::BasicDataServer::_narrow(ret),tmp);
 645   _vars.push_back(p);
 646 }
 647
 648 SALOME::Transaction_ptr DataScopeServerTransaction::createRdOnlyVarTransac(const char *varName, const SALOME::ByteVec& constValue)
 649 {
 650   checkNotAlreadyExistingVar(varName);
 651   TransactionRdOnlyVarCreate *ret(new TransactionRdOnlyVarCreate(this,varName,constValue));
 652   CORBA::Object_var obj(ret->activate());
 653   return SALOME::Transaction::_narrow(obj);
 654 }
 655
 656 SALOME::Transaction_ptr DataScopeServerTransaction::createRdExtVarTransac(const char *varName, const SALOME::ByteVec& constValue)
 657 {
 658   checkNotAlreadyExistingVar(varName);
 659   TransactionRdExtVarCreate *ret(new TransactionRdExtVarCreate(this,varName,constValue));
 660   CORBA::Object_var obj(ret->activate());
 661   return SALOME::Transaction::_narrow(obj);
 662 }
 663
 664 SALOME::Transaction_ptr DataScopeServerTransaction::createRdExtVarFreeStyleTransac(const char *varName, const SALOME::ByteVec& constValue, const char *compareFuncContent)
 665 {// no check on varName done here. Will be done on perform
 666   TransactionRdExtVarFreeStyleCreate *ret(new TransactionRdExtVarFreeStyleCreate(this,varName,constValue,compareFuncContent));
 667   CORBA::Object_var obj(ret->activate());
 668   return SALOME::Transaction::_narrow(obj);
 669 }
 670
 671 SALOME::Transaction_ptr DataScopeServerTransaction::createRdExtInitVarTransac(const char *varName, const SALOME::ByteVec& constValue)
 672 {
 673   checkNotAlreadyExistingVar(varName);
 674   TransactionRdExtInitVarCreate *ret(new TransactionRdExtInitVarCreate(this,varName,constValue));
 675   CORBA::Object_var obj(ret->activate());
 676   return SALOME::Transaction::_narrow(obj);
 677 }
 678
 679 SALOME::Transaction_ptr DataScopeServerTransaction::createRdWrVarTransac(const char *varName, const SALOME::ByteVec& constValue)
 680 {
 681   checkNotAlreadyExistingVar(varName);
 682   TransactionRdWrVarCreate *ret(new TransactionRdWrVarCreate(this,varName,constValue));
 683   CORBA::Object_var obj(ret->activate());
 684   return SALOME::Transaction::_narrow(obj);
 685 }
 686
 687 void DataScopeServerTransaction::addWaitKey(KeyWaiter *kw)
 688 {
 689   if(!kw)
 690     throw Exception("DataScopeServerTransaction::addWaitKey : NULL input object !");
 691   _waiting_keys.push_back(kw);
 692 }
 693
 694 void DataScopeServerTransaction::pingKey(PyObject *keyObj)
 695 {
 696   std::size_t ii(0);
 697   // this part does nothing except to be sure that in notify key all will be OK.
 698   PyObject *args(PyTuple_New(1));
 699   PyTuple_SetItem(args,0,keyObj); Py_XINCREF(keyObj);
 700   for(std::list< KeyWaiter *>::iterator it=_waiting_keys.begin();it!=_waiting_keys.end();it++,ii++)
 701     {
 702       PyObject *waitKey((*it)->getKeyPyObj());
 703       PyObject *meth(PyObject_GetAttrString(waitKey,"__eq__"));
 704       if(!meth)
 705       {
 706           std::ostringstream oss; oss << "DataScopeServerTransaction::pingKey : for object id #" << ii << " no __eq__ in pyobj !";
 707           throw Exception(oss.str());
 708       }
 709       PyObject *res(PyObject_CallObject(meth,args));
 710       Py_XDECREF(meth);
 711       if(res==NULL)
 712         {
 713           std::ostringstream oss; oss << "DataScopeServerTransaction::pingKey : for object id #" << ii << " error during cmp(k,wk[i]) !";
 714           throw Exception(oss.str());
 715         }
 716       PyBool_Check(res);
 717       if(PyErr_Occurred())
 718         {
 719           std::ostringstream oss; oss << "DataScopeServerTransaction::pingKey : for object id #" << ii << " error during interpretation of cmp(k,wk[i]) !";
 720           throw Exception(oss.str());
 721         }
 722       Py_XDECREF(res);
 723     }
 724   Py_XDECREF(args);
 725 }
 726
 727 void DataScopeServerTransaction::notifyKey(const std::string& varName, PyObject *keyObj, PyObject *valueObj)
 728 {
 729   std::size_t ii(0);
 730   PyObject *args(PyTuple_New(1));
 731   PyTuple_SetItem(args,0,keyObj); Py_XINCREF(keyObj);
 732   std::list< KeyWaiter *> newList,listOfEltToWakeUp;
 733   for(std::list< KeyWaiter *>::iterator it=_waiting_keys.begin();it!=_waiting_keys.end();it++,ii++)
 734     {
 735       if((*it)->getVarName()!=varName)
 736         {
 737           newList.push_back(*it);
 738           continue;
 739         }
 740       PyObject *waitKey((*it)->getKeyPyObj());
 741       PyObject *meth(PyObject_GetAttrString(waitKey,"__eq__"));
 742       if(!meth)
 743       {
 744           std::ostringstream oss; oss << "DataScopeServerTransaction::pingKey : for object id #" << ii << " no __eq__ in pyobj !";
 745           throw Exception(oss.str());
 746       }
 747       PyObject *res(PyObject_CallObject(meth,args));
 748       Py_XDECREF(meth);
 749       if(!PyBool_Check(res))
 750       {
 751           std::ostringstream oss; oss << "DataScopeServerTransaction::pingKey : for object id #" << ii << " no __eq__ in pyobj !";
 752           throw Exception(oss.str());
 753       }
 754       if(PyErr_Occurred())
 755         {
 756           std::ostringstream oss; oss << "DataScopeServerTransaction::notifyKey : MAIN INTERNAL ERROR ! for object id #" << ii << " error during interpretation of cmp(k,wk[i]) !";
 757           throw Exception(oss.str());
 758         }
 759       if(res==Py_True)
 760         listOfEltToWakeUp.push_back(*it);
 761       else
 762         newList.push_back(*it);
 763       Py_XDECREF(res);
 764     }
 765   Py_XDECREF(args);
 766   for(std::list< KeyWaiter *>::iterator it=listOfEltToWakeUp.begin();it!=listOfEltToWakeUp.end();it++)
 767     (*it)->valueJustCome(valueObj);
 768   for(std::list< KeyWaiter *>::iterator it=listOfEltToWakeUp.begin();it!=listOfEltToWakeUp.end();it++)
 769     (*it)->go();
 770   _waiting_keys=newList;
 771 }
 772
 773 SALOME::Transaction_ptr DataScopeServerTransaction::addKeyValueInVarHard(const char *varName, const SALOME::ByteVec& key, const SALOME::ByteVec& value)
 774 {
 775   checkVarExistingAndDict(varName);
 776   TransactionAddKeyValueHard *ret(new TransactionAddKeyValueHard(this,varName,key,value));
 777   CORBA::Object_var obj(ret->activate());
 778   return SALOME::Transaction::_narrow(obj);
 779 }
 780
 781 SALOME::Transaction_ptr DataScopeServerTransaction::addKeyValueInVarErrorIfAlreadyExisting(const char *varName, const SALOME::ByteVec& key, const SALOME::ByteVec& value)
 782 {
 783   checkVarExistingAndDict(varName);
 784   TransactionAddKeyValueErrorIfAlreadyExisting *ret(new TransactionAddKeyValueErrorIfAlreadyExisting(this,varName,key,value));
 785   CORBA::Object_var obj(ret->activate());
 786   return SALOME::Transaction::_narrow(obj);
 787 }
 788
 789 SALOME::TransactionMultiKeyAddSession_ptr DataScopeServerTransaction::addMultiKeyValueSession(const char *varName)
 790 {
 791   checkVarExistingAndDict(varName);
 792   TransactionMultiKeyAddSession *ret(new TransactionMultiKeyAddSession(this,varName));
 793   CORBA::Object_var obj(ret->activate());
 794   return SALOME::TransactionMultiKeyAddSession::_narrow(obj);
 795 }
 796
 797 SALOME::Transaction_ptr DataScopeServerTransaction::removeKeyInVarErrorIfNotAlreadyExisting(const char *varName, const SALOME::ByteVec& key)
 798 {
 799   checkVarExistingAndDict(varName);
 800   TransactionRemoveKeyInVarErrorIfNotAlreadyExisting *ret(new TransactionRemoveKeyInVarErrorIfNotAlreadyExisting(this,varName,key));
 801   CORBA::Object_var obj(ret->activate());
 802   return SALOME::Transaction::_narrow(obj);
 803 }
 804
 805 SALOME::TransactionRdWrAccess_ptr DataScopeServerTransaction::createWorkingVarTransac(const char *varName, const SALOME::ByteVec& constValue)
 806 {
 807   std::string varNameCpp(varName);
 808   checkNotAlreadyExistingVar(varName);
 809   PickelizedPyObjRdWrServer *tmp(new PickelizedPyObjRdWrServer(this,varNameCpp,constValue));
 810   CORBA::Object_var obj(tmp->activate());
 811   std::pair< SALOME::BasicDataServer_var, BasicDataServer * > p(SALOME::BasicDataServer::_narrow(obj),tmp);
 812   _vars.push_back(p);
 813   //
 814   TransactionMorphRdWrIntoRdOnly *ret(new TransactionMorphRdWrIntoRdOnly(this,varName));
 815   CORBA::Object_var obj2(ret->activate());
 816   return SALOME::TransactionRdWrAccess::_narrow(obj2);
 817 }
 818
 819 SALOME::Transaction_ptr DataScopeServerTransaction::killVarTransac(const char *varName)
 820 {
 821   std::string varNameCpp(varName);
 822   checkExistingVar(varNameCpp);
 823   //
 824   TransactionKillVar *ret(new TransactionKillVar(this,varName));
 825   CORBA::Object_var obj2(ret->activate());
 826   return SALOME::Transaction::_narrow(obj2);
 827 }
 828
 829 SALOME::KeyWaiter_ptr DataScopeServerTransaction::waitForKeyInVar(const char *varName, const SALOME::ByteVec& keyVal)
 830 {
 831   PickelizedPyObjServer *pickelObj(checkVarExistingAndDict(varName));
 832   KeyWaiter *ret(new KeyWaiter(pickelObj,keyVal));
 833   CORBA::Object_var obj(ret->activate());//KeyWaiter instance activated inside a multithread POA contrary to all of objects in SALOMESDS in single thread !
 834   return SALOME::KeyWaiter::_narrow(obj);
 835 }
 836
 837 SALOME::KeyWaiter_ptr DataScopeServerTransaction::waitForKeyInVarAndKillIt(const char *varName, const SALOME::ByteVec& keyVal, SALOME::Transaction_out transac)
 838 {
 839   PickelizedPyObjServer *pickelObj(checkVarExistingAndDict(varName));
 840   KeyWaiter *ret0(new KeyWaiter(pickelObj,keyVal));
 841   CORBA::Object_var obj(ret0->activate());//KeyWaiter instance activated inside a multithread POA contrary to all of objects in SALOMESDS in single thread !
 842   //
 843   TransactionRemoveKeyInVarErrorIfNotAlreadyExisting *ret1(new TransactionRemoveKeyInVarErrorIfNotAlreadyExisting(this,varName,keyVal));
 844   CORBA::Object_var obj2(ret1->activate());
 845   transac=SALOME::Transaction::_narrow(obj2);
 846   //
 847   return SALOME::KeyWaiter::_narrow(obj);
 848 }
 849
 850 SALOME::ByteVec *DataScopeServerTransaction::waitForMonoThrRev(SALOME::KeyWaiter_ptr kw)
 851 {
 852   PortableServer::ServantBase *ret(0);
 853   try
 854     {
 855       ret=_poa_for_key_waiter->reference_to_servant(kw);// Warning ref cnt of ret has been incremented !
 856     }
 857   catch(...) { ret=0; }
 858   KeyWaiter *retc(dynamic_cast<KeyWaiter *>(ret));
 859   if(!retc)
 860     throw Exception("DataScopeServerTransaction::invokeMonoThr : internal error 1 !");
 861   retc->_remove_ref();// restore the counter after _poa_for_key_waiter->reference_to_servant(kw)
 862   SALOME::ByteVec *zeRet(retc->waitForMonoThr());
 863   retc->enforcedRelease();
 864   return zeRet;
 865 }
 866
 867 SALOME::ByteVec *DataScopeServerTransaction::waitForAndKill(SALOME::KeyWaiter_ptr kw)
 868 {
 869   PortableServer::ServantBase *ret(0);
 870   try
 871     {
 872       ret=_poa_for_key_waiter->reference_to_servant(kw);// Warning ref cnt of ret has been incremented !
 873     }
 874   catch(...) { ret=0; }
 875   KeyWaiter *retc(dynamic_cast<KeyWaiter *>(ret));
 876   if(!retc)
 877     throw Exception("DataScopeServerTransaction::invokeMonoThr : internal error 1 !");
 878   retc->_remove_ref();// restore the counter after _poa_for_key_waiter->reference_to_servant(kw)
 879   SALOME::ByteVec *zeRet(retc->waitForAndKill());
 880   retc->enforcedRelease();
 881   return zeRet;
 882 }
 883
 884 void DataScopeServerTransaction::atomicApply(const SALOME::ListOfTransaction& transactions)
 885 {
 886   std::size_t sz(transactions.length());
 887   if(sz==0)
 888     return ;
 889   std::vector< AutoServantPtr<Transaction> > transactionsCpp(sz);
 890   for(std::size_t i=0;i<sz;i++)
 891     {
 892       PortableServer::ServantBase *eltBase(0);
 893       Transaction *elt(0);
 894       try
 895         {
 896           eltBase=_poa->reference_to_servant(transactions[(CORBA::ULong)i]); //!< TODO: size_t to CORBA::ULong
 897           elt=dynamic_cast<Transaction *>(eltBase);
 898         }
 899       catch(...)
 900         {
 901           std::ostringstream oss; oss << "DataScopeServerTransaction::atomicApply : the elt #" << i << " is invalid !";
 902           throw Exception(oss.str());
 903         }
 904       if(!elt)
 905         {
 906           std::ostringstream oss; oss << "DataScopeServerTransaction::atomicApply : the elt #" << i << " is null ?";
 907           throw Exception(oss.str());
 908         }
 909       elt->_remove_ref();
 910       transactionsCpp[i]=elt;
 911     }
 912   {// important do not merge loops !
 913     std::vector<TrustTransaction> transactions2(sz);
 914     bool mustRollback(true);
 915     for(std::size_t i=0;i<sz;i++)
 916       transactions2[i].setTransaction(transactionsCpp[i],&mustRollback);
 917     for(std::size_t i=0;i<sz;i++)
 918       transactions2[i].operate();
 919     mustRollback=false;
 920   }
 921   for(std::size_t i=0;i<sz;i++)
 922     transactionsCpp[i]->notify();
 923 }
 924
 925 DataScopeServerTransaction::~DataScopeServerTransaction()
 926 {
 927 }
 928
 929 SALOME::RequestSwitcher_ptr DataScopeServerTransaction::getRequestSwitcher()
 930 {
 931   if(_rs.isNull())
 932     {
 933       _rs=new RequestSwitcher(_orb,this);
 934     }
 935   CORBA::Object_var obj(_rs->activate());
 936   return SALOME::RequestSwitcher::_narrow(obj);
 937 }