src/SALOMESDS/SALOMESDS_Transaction.cxx

   1 // Copyright (C) 2007-2016  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_Transaction.hxx"
  22 #include "SALOMESDS_Exception.hxx"
  23 #include "SALOMESDS_PickelizedPyObjServer.hxx"
  24 #include "SALOMESDS_PickelizedPyObjRdWrServer.hxx"
  25 #include "SALOMESDS_PickelizedPyObjRdExtServer.hxx"
  26 #include "SALOMESDS_TrustTransaction.hxx"
  27
  28 #include <sstream>
  29
  30 using namespace SALOMESDS;
  31
  32 void Transaction::FromByteSeqToVB(const SALOME::ByteVec& bsToBeConv, std::vector<unsigned char>& ret)
  33 {
  34   std::size_t sz(bsToBeConv.length());
  35   ret.resize(sz);
  36   unsigned char *buf(const_cast<unsigned char *>(&ret[0]));
  37   for(std::size_t i=0;i<sz;i++)
  38     buf[i]=bsToBeConv[i];
  39 }
  40
  41 void Transaction::FromVBToByteSeq(const std::vector<unsigned char>& bsToBeConv, SALOME::ByteVec& ret)
  42 {
  43   std::size_t sz(bsToBeConv.size());
  44   ret.length(sz);
  45   for(std::size_t i=0;i<sz;i++)
  46     ret[i]=bsToBeConv[i];
  47 }
  48
  49 Transaction::~Transaction()
  50 {
  51 }
  52
  53 TransactionVarCreate::TransactionVarCreate(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& constValue):Transaction(dsct,varName)
  54 {
  55   FromByteSeqToVB(constValue,_data);
  56 }
  57
  58 void TransactionVarCreate::prepareRollBackInCaseOfFailure()
  59 {
  60   checkNotAlreadyExisting();
  61 }
  62
  63 void TransactionVarCreate::rollBack()
  64 {
  65   if(_dsct->existVar(_var_name.c_str()))
  66     _dsct->deleteVar(_var_name.c_str());
  67 }
  68
  69 /*!
  70  * no implementation it is not a bug !
  71  */
  72 void TransactionVarCreate::notify()
  73 {
  74 }
  75
  76 void TransactionRdOnlyVarCreate::perform()
  77 {
  78   SALOME::ByteVec data2;
  79   FromVBToByteSeq(_data,data2);
  80   _dsct->createRdOnlyVarInternal(_var_name,data2);
  81 }
  82
  83 void TransactionRdExtVarCreate::perform()
  84 {
  85   SALOME::ByteVec data2;
  86   FromVBToByteSeq(_data,data2);
  87   _dsct->createRdExtVarInternal(_var_name,data2);
  88 }
  89
  90 TransactionRdExtVarFreeStyleCreate::TransactionRdExtVarFreeStyleCreate(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& constValue, const SALOME::ByteVec& sha1):TransactionRdExtVarCreate(dsct,varName,constValue)
  91 {
  92   FromByteSeqToVB(sha1,_sha1);
  93 }
  94
  95 void TransactionRdExtVarFreeStyleCreate::prepareRollBackInCaseOfFailure()
  96 {//nothing it is not a bug
  97 }
  98
  99 void TransactionRdExtVarFreeStyleCreate::perform()
 100 {
 101   SALOME::ByteVec data2;
 102   FromVBToByteSeq(_data,data2);
 103   _dsct->createRdExtVarFreeStyleInternal(_var_name,data2,std::move(_sha1));
 104 }
 105
 106 void TransactionRdExtInitVarCreate::perform()
 107 {
 108   SALOME::ByteVec data2;
 109   FromVBToByteSeq(_data,data2);
 110   _dsct->createRdExtInitVarInternal(_var_name,data2);
 111 }
 112
 113 void TransactionRdWrVarCreate::perform()
 114 {
 115   SALOME::ByteVec data2;
 116   FromVBToByteSeq(_data,data2);
 117   _dsct->createRdWrVarInternal(_var_name,data2);
 118 }
 119
 120 TransactionKillVar::TransactionKillVar(DataScopeServerTransaction *dsct, const std::string& varName):Transaction(dsct,varName)
 121 {
 122 }
 123
 124 /*!
 125  * TODO
 126  */
 127 void TransactionKillVar::prepareRollBackInCaseOfFailure()
 128 {
 129   checkVarExisting();
 130   //BasicDataServer *bds(_dsct->retrieveVarInternal2(_var_name);
 131   //bds->clone();
 132 }
 133
 134 void TransactionKillVar::perform()
 135 {
 136   _dsct->deleteVar(_var_name.c_str());
 137 }
 138
 139 /*!
 140  * TODO
 141  */
 142 void TransactionKillVar::rollBack()
 143 {
 144 }
 145
 146 /*!
 147  * no implementation it is not a bug ! killVar is not an event.
 148  */
 149 void TransactionKillVar::notify()
 150 {
 151 }
 152
 153 TransactionDictModify::TransactionDictModify(DataScopeServerTransaction *dsct, const std::string& varName):Transaction(dsct,varName),_varc(0)
 154 {
 155   _varc=checkVarExistingAndDict();
 156 }
 157
 158 void TransactionDictModify::prepareRollBackInCaseOfFailure()
 159 {
 160   _zeDataBefore.clear();
 161   PyObject *zeDictPy(_varc->getPyObj());
 162   Py_XINCREF(zeDictPy);
 163   _zeDataBefore=_varc->pickelize(zeDictPy);
 164 }
 165
 166 void TransactionDictModify::rollBack()
 167 {
 168   PyObject *obj(_varc->getPyObjFromPickled(_zeDataBefore));
 169   _varc->setNewPyObj(obj);
 170   _zeDataBefore.clear();
 171 }
 172
 173 TransactionAddKeyValue::TransactionAddKeyValue(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key, const SALOME::ByteVec& value):TransactionDictModify(dsct,varName)
 174 {
 175   std::vector<unsigned char> key2,value2;
 176   FromByteSeqToVB(key,key2);
 177   FromByteSeqToVB(value,value2);
 178   _key=PickelizedPyObjServer::GetPyObjFromPickled(key2,_dsct);
 179   _value=PickelizedPyObjServer::GetPyObjFromPickled(value2,_dsct);
 180 }
 181
 182 void TransactionAddKeyValue::prepareRollBackInCaseOfFailure()
 183 {
 184   TransactionDictModify::prepareRollBackInCaseOfFailure();
 185   _dsct->pingKey(_key);// check that key is OK with all waiting keys
 186 }
 187
 188 void TransactionAddKeyValue::notify()
 189 {
 190   _dsct->notifyKey(getVarName(),_key,_value);
 191 }
 192
 193 TransactionAddKeyValue::~TransactionAddKeyValue()
 194 {
 195   Py_XDECREF(_key);
 196   Py_XDECREF(_value);
 197 }
 198
 199 TransactionAddKeyValueHard::TransactionAddKeyValueHard(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key, const SALOME::ByteVec& value):TransactionAddKeyValue(dsct,varName,key,value)
 200 {
 201 }
 202
 203 void TransactionAddKeyValueHard::perform()
 204 {
 205   _varc->addKeyValueHard(_key,_value);
 206 }
 207
 208 TransactionAddKeyValueErrorIfAlreadyExisting::TransactionAddKeyValueErrorIfAlreadyExisting(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key, const SALOME::ByteVec& value):TransactionAddKeyValue(dsct,varName,key,value)
 209 {
 210   _varc->checkKeyNotAlreadyPresent(_key);
 211 }
 212
 213 void TransactionAddKeyValueErrorIfAlreadyExisting::perform()
 214 {
 215   _varc->addKeyValueErrorIfAlreadyExisting(_key,_value);
 216 }
 217
 218 TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::TransactionRemoveKeyInVarErrorIfNotAlreadyExisting(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key):TransactionDictModify(dsct,varName),_key(0)
 219 {
 220   std::vector<unsigned char> key2;
 221   FromByteSeqToVB(key,key2);
 222   _key=PickelizedPyObjServer::GetPyObjFromPickled(key2,_dsct);
 223 }
 224
 225 void TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::perform()
 226 {
 227   _varc->removeKeyInVarErrorIfNotAlreadyExisting(_key);
 228 }
 229
 230 /*!
 231  * no implementation it is not a bug !
 232  */
 233 void TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::notify()
 234 {
 235 }
 236
 237 TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::~TransactionRemoveKeyInVarErrorIfNotAlreadyExisting()
 238 {
 239   Py_XDECREF(_key);
 240 }
 241
 242 TransactionMorphRdWrIntoRdOnly::TransactionMorphRdWrIntoRdOnly(DataScopeServerTransaction *dsct, const std::string& varName):Transaction(dsct,varName)
 243 {
 244 }
 245
 246 SALOME::PickelizedPyObjRdWrServer_ptr TransactionMorphRdWrIntoRdOnly::getVar()
 247 {
 248   SALOME::BasicDataServer_var obj(_dsct->retrieveVarInternal(_var_name.c_str()));
 249   SALOME::PickelizedPyObjRdWrServer_ptr ret(SALOME::PickelizedPyObjRdWrServer::_narrow(obj));
 250   if(CORBA::is_nil(ret))
 251     {
 252       std::ostringstream oss; oss << "TransactionMorphRdWrIntoRdOnly::getVar : var \"" << _var_name << "\" has not expected PickelizedPyObjRdWrServer type !";
 253       throw Exception(oss.str());
 254     }
 255   return ret;
 256 }
 257
 258 void TransactionMorphRdWrIntoRdOnly::prepareRollBackInCaseOfFailure()
 259 {
 260   BasicDataServer *var(_dsct->retrieveVarInternal2(_var_name));
 261   if(!var)
 262     throw Exception("TransactionMorphRdWrIntoRdOnly::prepareRollBackInCaseOfFailure : Returned var is NULL !");
 263   PickelizedPyObjRdWrServer *varc(dynamic_cast<PickelizedPyObjRdWrServer *>(var));
 264   if(!varc)
 265     throw Exception("TransactionMorphRdWrIntoRdOnly::prepareRollBackInCaseOfFailure : Returned var has not expected type !");
 266 }
 267
 268 void TransactionMorphRdWrIntoRdOnly::perform()
 269 {
 270   _dsct->moveStatusOfVarFromRdWrToRdOnly(_var_name);
 271 }
 272
 273 void TransactionMorphRdWrIntoRdOnly::rollBack()
 274 {
 275   _dsct->moveStatusOfVarFromRdOnlyToRdWr(_var_name);
 276 }
 277
 278 /*!
 279  * no implementation it is not a bug !
 280  */
 281 void TransactionMorphRdWrIntoRdOnly::notify()
 282 {
 283 }
 284
 285 TransactionMultiKeyAddSession::TransactionMultiKeyAddSession(DataScopeServerTransaction *dsct, const std::string& varName):Transaction(dsct,varName)
 286 {
 287   _dsct->moveStatusOfVarFromRdExtOrRdExtInitToRdExtInit(_var_name);
 288 }
 289
 290 void TransactionMultiKeyAddSession::addKeyValueInVarErrorIfAlreadyExistingNow(const SALOME::ByteVec& key, const SALOME::ByteVec& value)
 291 {
 292   _dsct->checkVarExistingAndDict(_var_name);
 293   TransactionAddKeyValueErrorIfAlreadyExisting ret(_dsct,_var_name,key,value);
 294   {
 295     ret.perform();
 296     /*bool mustRollback(true);
 297     TrustTransaction t;
 298     t.setTransaction(&ret,&mustRollback);
 299     t.operate();
 300     mustRollback=false;//important let this line to notify t that everything was OK*/
 301   }
 302   ret.notify();
 303 }
 304
 305 /*!
 306  * no implementation it is not a bug !
 307  */
 308 void TransactionMultiKeyAddSession::prepareRollBackInCaseOfFailure()
 309 {
 310 }
 311
 312 void TransactionMultiKeyAddSession::perform()
 313 {
 314   _dsct->moveStatusOfVarFromRdExtOrRdExtInitToRdExt(_var_name);
 315 }
 316
 317 /*!
 318  * no implementation it is not a bug !
 319  */
 320 void TransactionMultiKeyAddSession::rollBack()
 321 {
 322 }
 323
 324 /*!
 325  * no implementation it is not a bug !
 326  */
 327 void TransactionMultiKeyAddSession::notify()
 328 {
 329 }
 330