src/SALOMESDS/SALOMESDS_Transaction.cxx

   1 // Copyright (C) 2007-2015  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 TransactionRdWrVarCreate::perform()
  91 {
  92   SALOME::ByteVec data2;
  93   FromVBToByteSeq(_data,data2);
  94   _dsct->createRdWrVarInternal(_var_name,data2);
  95 }
  96
  97 TransactionDictModify::TransactionDictModify(DataScopeServerTransaction *dsct, const std::string& varName):Transaction(dsct,varName),_varc(0)
  98 {
  99   _varc=checkVarExistingAndDict();
 100 }
 101
 102 void TransactionDictModify::prepareRollBackInCaseOfFailure()
 103 {
 104   _zeDataBefore.clear();
 105   PyObject *zeDictPy(_varc->getPyObj());
 106   Py_XINCREF(zeDictPy);
 107   _zeDataBefore=_varc->pickelize(zeDictPy);
 108 }
 109
 110 void TransactionDictModify::rollBack()
 111 {
 112   PyObject *obj(_varc->getPyObjFromPickled(_zeDataBefore));
 113   _varc->setNewPyObj(obj);
 114   _zeDataBefore.clear();
 115 }
 116
 117 TransactionAddKeyValue::TransactionAddKeyValue(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key, const SALOME::ByteVec& value):TransactionDictModify(dsct,varName)
 118 {
 119   std::vector<unsigned char> key2,value2;
 120   FromByteSeqToVB(key,key2);
 121   FromByteSeqToVB(value,value2);
 122   _key=PickelizedPyObjServer::GetPyObjFromPickled(key2,_dsct);
 123   _value=PickelizedPyObjServer::GetPyObjFromPickled(value2,_dsct);
 124 }
 125
 126 void TransactionAddKeyValue::prepareRollBackInCaseOfFailure()
 127 {
 128   TransactionDictModify::prepareRollBackInCaseOfFailure();
 129   _dsct->pingKey(_key);// check that key is OK with all waiting keys
 130 }
 131
 132 void TransactionAddKeyValue::notify()
 133 {
 134   _dsct->notifyKey(getVarName(),_key,_value);
 135 }
 136
 137 TransactionAddKeyValue::~TransactionAddKeyValue()
 138 {
 139   Py_XDECREF(_key);
 140   Py_XDECREF(_value);
 141 }
 142
 143 TransactionAddKeyValueHard::TransactionAddKeyValueHard(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key, const SALOME::ByteVec& value):TransactionAddKeyValue(dsct,varName,key,value)
 144 {
 145 }
 146
 147 void TransactionAddKeyValueHard::perform()
 148 {
 149   _varc->addKeyValueHard(_key,_value);
 150 }
 151
 152 TransactionAddKeyValueErrorIfAlreadyExisting::TransactionAddKeyValueErrorIfAlreadyExisting(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key, const SALOME::ByteVec& value):TransactionAddKeyValue(dsct,varName,key,value)
 153 {
 154   _varc->checkKeyNotAlreadyPresent(_key);
 155 }
 156
 157 void TransactionAddKeyValueErrorIfAlreadyExisting::perform()
 158 {
 159   _varc->addKeyValueErrorIfAlreadyExisting(_key,_value);
 160 }
 161
 162 TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::TransactionRemoveKeyInVarErrorIfNotAlreadyExisting(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key):TransactionDictModify(dsct,varName),_key(0)
 163 {
 164   std::vector<unsigned char> key2;
 165   FromByteSeqToVB(key,key2);
 166   _key=PickelizedPyObjServer::GetPyObjFromPickled(key2,_dsct);
 167 }
 168
 169 void TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::perform()
 170 {
 171   _varc->removeKeyInVarErrorIfNotAlreadyExisting(_key);
 172 }
 173
 174 /*!
 175  * no implementation it is not a bug !
 176  */
 177 void TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::notify()
 178 {
 179 }
 180
 181 TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::~TransactionRemoveKeyInVarErrorIfNotAlreadyExisting()
 182 {
 183   Py_XDECREF(_key);
 184 }
 185
 186 TransactionMorphRdWrIntoRdOnly::TransactionMorphRdWrIntoRdOnly(DataScopeServerTransaction *dsct, const std::string& varName):Transaction(dsct,varName)
 187 {
 188 }
 189
 190 SALOME::PickelizedPyObjRdWrServer_ptr TransactionMorphRdWrIntoRdOnly::getVar()
 191 {
 192   SALOME::BasicDataServer_var obj(_dsct->retrieveVarInternal(_var_name.c_str()));
 193   SALOME::PickelizedPyObjRdWrServer_ptr ret(SALOME::PickelizedPyObjRdWrServer::_narrow(obj));
 194   if(CORBA::is_nil(ret))
 195     {
 196       std::ostringstream oss; oss << "TransactionMorphRdWrIntoRdOnly::getVar : var \"" << _var_name << "\" has not expected PickelizedPyObjRdWrServer type !";
 197       throw Exception(oss.str());
 198     }
 199   return ret;
 200 }
 201
 202 void TransactionMorphRdWrIntoRdOnly::prepareRollBackInCaseOfFailure()
 203 {
 204   BasicDataServer *var(_dsct->retrieveVarInternal2(_var_name));
 205   if(!var)
 206     throw Exception("TransactionMorphRdWrIntoRdOnly::prepareRollBackInCaseOfFailure : Returned var is NULL !");
 207   PickelizedPyObjRdWrServer *varc(dynamic_cast<PickelizedPyObjRdWrServer *>(var));
 208   if(!varc)
 209     throw Exception("TransactionMorphRdWrIntoRdOnly::prepareRollBackInCaseOfFailure : Returned var has not expected type !");
 210 }
 211
 212 void TransactionMorphRdWrIntoRdOnly::perform()
 213 {
 214   _dsct->moveStatusOfVarFromRdWrToRdOnly(_var_name);
 215 }
 216
 217 void TransactionMorphRdWrIntoRdOnly::rollBack()
 218 {
 219   _dsct->moveStatusOfVarFromRdOnlyToRdWr(_var_name);
 220 }
 221
 222 /*!
 223  * no implementation it is not a bug !
 224  */
 225 void TransactionMorphRdWrIntoRdOnly::notify()
 226 {
 227 }
 228
 229 TransactionMultiKeyAddSession::TransactionMultiKeyAddSession(DataScopeServerTransaction *dsct, const std::string& varName):Transaction(dsct,varName)
 230 {
 231   _dsct->moveStatusOfVarFromRdExtToRdExtInit(_var_name);
 232 }
 233
 234 void TransactionMultiKeyAddSession::addKeyValueInVarErrorIfAlreadyExistingNow(const SALOME::ByteVec& key, const SALOME::ByteVec& value)
 235 {
 236   _dsct->checkVarExistingAndDict(_var_name);
 237   TransactionAddKeyValueErrorIfAlreadyExisting ret(_dsct,_var_name,key,value);
 238   {
 239     bool mustRollback(true);
 240     TrustTransaction t;
 241     t.setTransaction(&ret,&mustRollback);
 242     t.operate();
 243     mustRollback=false;//important let this line to notify t that everything was OK
 244   }
 245   ret.notify();
 246 }
 247
 248 /*!
 249  * no implementation it is not a bug !
 250  */
 251 void TransactionMultiKeyAddSession::prepareRollBackInCaseOfFailure()
 252 {
 253 }
 254
 255 void TransactionMultiKeyAddSession::perform()
 256 {
 257   _dsct->moveStatusOfVarFromRdExtInitToRdExt(_var_name);
 258 }
 259
 260 /*!
 261  * no implementation it is not a bug !
 262  */
 263 void TransactionMultiKeyAddSession::rollBack()
 264 {
 265 }
 266
 267 /*!
 268  * no implementation it is not a bug !
 269  */
 270 void TransactionMultiKeyAddSession::notify()
 271 {
 272 }
 273