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 {//nothing it is not a bug
  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 void TransactionRdExtInitVarCreate::perform()
  91 {
  92   SALOME::ByteVec data2;
  93   FromVBToByteSeq(_data,data2);
  94   _dsct->createRdExtInitVarInternal(_var_name,data2);
  95 }
  96
  97 void TransactionRdWrVarCreate::perform()
  98 {
  99   SALOME::ByteVec data2;
 100   FromVBToByteSeq(_data,data2);
 101   _dsct->createRdWrVarInternal(_var_name,data2);
 102 }
 103
 104 TransactionKillVar::TransactionKillVar(DataScopeServerTransaction *dsct, const std::string& varName):Transaction(dsct,varName)
 105 {
 106 }
 107
 108 /*!
 109  * TODO
 110  */
 111 void TransactionKillVar::prepareRollBackInCaseOfFailure()
 112 {
 113   checkVarExisting();
 114   //BasicDataServer *bds(_dsct->retrieveVarInternal2(_var_name);
 115   //bds->clone();
 116 }
 117
 118 void TransactionKillVar::perform()
 119 {
 120   _dsct->deleteVar(_var_name.c_str());
 121 }
 122
 123 /*!
 124  * TODO
 125  */
 126 void TransactionKillVar::rollBack()
 127 {
 128 }
 129
 130 /*!
 131  * no implementation it is not a bug ! killVar is not an event.
 132  */
 133 void TransactionKillVar::notify()
 134 {
 135 }
 136
 137 TransactionDictModify::TransactionDictModify(DataScopeServerTransaction *dsct, const std::string& varName):Transaction(dsct,varName),_varc(0)
 138 {
 139   _varc=checkVarExistingAndDict();
 140 }
 141
 142 void TransactionDictModify::prepareRollBackInCaseOfFailure()
 143 {
 144   _zeDataBefore.clear();
 145   PyObject *zeDictPy(_varc->getPyObj());
 146   Py_XINCREF(zeDictPy);
 147   _zeDataBefore=_varc->pickelize(zeDictPy);
 148 }
 149
 150 void TransactionDictModify::rollBack()
 151 {
 152   PyObject *obj(_varc->getPyObjFromPickled(_zeDataBefore));
 153   _varc->setNewPyObj(obj);
 154   _zeDataBefore.clear();
 155 }
 156
 157 TransactionAddKeyValue::TransactionAddKeyValue(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key, const SALOME::ByteVec& value):TransactionDictModify(dsct,varName)
 158 {
 159   std::vector<unsigned char> key2,value2;
 160   FromByteSeqToVB(key,key2);
 161   FromByteSeqToVB(value,value2);
 162   _key=PickelizedPyObjServer::GetPyObjFromPickled(key2,_dsct);
 163   _value=PickelizedPyObjServer::GetPyObjFromPickled(value2,_dsct);
 164 }
 165
 166 void TransactionAddKeyValue::prepareRollBackInCaseOfFailure()
 167 {
 168   TransactionDictModify::prepareRollBackInCaseOfFailure();
 169   _dsct->pingKey(_key);// check that key is OK with all waiting keys
 170 }
 171
 172 void TransactionAddKeyValue::notify()
 173 {
 174   _dsct->notifyKey(getVarName(),_key,_value);
 175 }
 176
 177 TransactionAddKeyValue::~TransactionAddKeyValue()
 178 {
 179   Py_XDECREF(_key);
 180   Py_XDECREF(_value);
 181 }
 182
 183 TransactionAddKeyValueHard::TransactionAddKeyValueHard(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key, const SALOME::ByteVec& value):TransactionAddKeyValue(dsct,varName,key,value)
 184 {
 185 }
 186
 187 void TransactionAddKeyValueHard::perform()
 188 {
 189   _varc->addKeyValueHard(_key,_value);
 190 }
 191
 192 TransactionAddKeyValueErrorIfAlreadyExisting::TransactionAddKeyValueErrorIfAlreadyExisting(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key, const SALOME::ByteVec& value):TransactionAddKeyValue(dsct,varName,key,value)
 193 {
 194   _varc->checkKeyNotAlreadyPresent(_key);
 195 }
 196
 197 void TransactionAddKeyValueErrorIfAlreadyExisting::perform()
 198 {
 199   _varc->addKeyValueErrorIfAlreadyExisting(_key,_value);
 200 }
 201
 202 TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::TransactionRemoveKeyInVarErrorIfNotAlreadyExisting(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key):TransactionDictModify(dsct,varName),_key(0)
 203 {
 204   std::vector<unsigned char> key2;
 205   FromByteSeqToVB(key,key2);
 206   _key=PickelizedPyObjServer::GetPyObjFromPickled(key2,_dsct);
 207 }
 208
 209 void TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::perform()
 210 {
 211   _varc->removeKeyInVarErrorIfNotAlreadyExisting(_key);
 212 }
 213
 214 /*!
 215  * no implementation it is not a bug !
 216  */
 217 void TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::notify()
 218 {
 219 }
 220
 221 TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::~TransactionRemoveKeyInVarErrorIfNotAlreadyExisting()
 222 {
 223   Py_XDECREF(_key);
 224 }
 225
 226 TransactionMorphRdWrIntoRdOnly::TransactionMorphRdWrIntoRdOnly(DataScopeServerTransaction *dsct, const std::string& varName):Transaction(dsct,varName)
 227 {
 228 }
 229
 230 SALOME::PickelizedPyObjRdWrServer_ptr TransactionMorphRdWrIntoRdOnly::getVar()
 231 {
 232   SALOME::BasicDataServer_var obj(_dsct->retrieveVarInternal(_var_name.c_str()));
 233   SALOME::PickelizedPyObjRdWrServer_ptr ret(SALOME::PickelizedPyObjRdWrServer::_narrow(obj));
 234   if(CORBA::is_nil(ret))
 235     {
 236       std::ostringstream oss; oss << "TransactionMorphRdWrIntoRdOnly::getVar : var \"" << _var_name << "\" has not expected PickelizedPyObjRdWrServer type !";
 237       throw Exception(oss.str());
 238     }
 239   return ret;
 240 }
 241
 242 void TransactionMorphRdWrIntoRdOnly::prepareRollBackInCaseOfFailure()
 243 {
 244   BasicDataServer *var(_dsct->retrieveVarInternal2(_var_name));
 245   if(!var)
 246     throw Exception("TransactionMorphRdWrIntoRdOnly::prepareRollBackInCaseOfFailure : Returned var is NULL !");
 247   PickelizedPyObjRdWrServer *varc(dynamic_cast<PickelizedPyObjRdWrServer *>(var));
 248   if(!varc)
 249     throw Exception("TransactionMorphRdWrIntoRdOnly::prepareRollBackInCaseOfFailure : Returned var has not expected type !");
 250 }
 251
 252 void TransactionMorphRdWrIntoRdOnly::perform()
 253 {
 254   _dsct->moveStatusOfVarFromRdWrToRdOnly(_var_name);
 255 }
 256
 257 void TransactionMorphRdWrIntoRdOnly::rollBack()
 258 {
 259   _dsct->moveStatusOfVarFromRdOnlyToRdWr(_var_name);
 260 }
 261
 262 /*!
 263  * no implementation it is not a bug !
 264  */
 265 void TransactionMorphRdWrIntoRdOnly::notify()
 266 {
 267 }
 268
 269 TransactionMultiKeyAddSession::TransactionMultiKeyAddSession(DataScopeServerTransaction *dsct, const std::string& varName):Transaction(dsct,varName)
 270 {
 271   _dsct->moveStatusOfVarFromRdExtOrRdExtInitToRdExtInit(_var_name);
 272 }
 273
 274 void TransactionMultiKeyAddSession::addKeyValueInVarErrorIfAlreadyExistingNow(const SALOME::ByteVec& key, const SALOME::ByteVec& value)
 275 {
 276   _dsct->checkVarExistingAndDict(_var_name);
 277   TransactionAddKeyValueErrorIfAlreadyExisting ret(_dsct,_var_name,key,value);
 278   {
 279     bool mustRollback(true);
 280     TrustTransaction t;
 281     t.setTransaction(&ret,&mustRollback);
 282     t.operate();
 283     mustRollback=false;//important let this line to notify t that everything was OK
 284   }
 285   ret.notify();
 286 }
 287
 288 /*!
 289  * no implementation it is not a bug !
 290  */
 291 void TransactionMultiKeyAddSession::prepareRollBackInCaseOfFailure()
 292 {
 293 }
 294
 295 void TransactionMultiKeyAddSession::perform()
 296 {
 297   _dsct->moveStatusOfVarFromRdExtOrRdExtInitToRdExt(_var_name);
 298 }
 299
 300 /*!
 301  * no implementation it is not a bug !
 302  */
 303 void TransactionMultiKeyAddSession::rollBack()
 304 {
 305 }
 306
 307 /*!
 308  * no implementation it is not a bug !
 309  */
 310 void TransactionMultiKeyAddSession::notify()
 311 {
 312 }
 313