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
  27 #include <sstream>
  28
  29 using namespace SALOMESDS;
  30
  31 void Transaction::FromByteSeqToVB(const SALOME::ByteVec& bsToBeConv, std::vector<unsigned char>& ret)
  32 {
  33   std::size_t sz(bsToBeConv.length());
  34   ret.resize(sz);
  35   unsigned char *buf(const_cast<unsigned char *>(&ret[0]));
  36   for(std::size_t i=0;i<sz;i++)
  37     buf[i]=bsToBeConv[i];
  38 }
  39
  40 void Transaction::FromVBToByteSeq(const std::vector<unsigned char>& bsToBeConv, SALOME::ByteVec& ret)
  41 {
  42   std::size_t sz(bsToBeConv.size());
  43   ret.length(sz);
  44   for(std::size_t i=0;i<sz;i++)
  45     ret[i]=bsToBeConv[i];
  46 }
  47
  48 Transaction::~Transaction()
  49 {
  50 }
  51
  52 TransactionVarCreate::TransactionVarCreate(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& constValue):Transaction(dsct,varName)
  53 {
  54   FromByteSeqToVB(constValue,_data);
  55 }
  56
  57 void TransactionVarCreate::prepareRollBackInCaseOfFailure()
  58 {//nothing it is not a bug
  59   checkNotAlreadyExisting();
  60 }
  61
  62 void TransactionVarCreate::rollBack()
  63 {
  64   if(_dsct->existVar(_var_name.c_str()))
  65     _dsct->deleteVar(_var_name.c_str());
  66 }
  67
  68 /*!
  69  * no implementation it is not a bug !
  70  */
  71 void TransactionVarCreate::notify()
  72 {
  73 }
  74
  75 void TransactionRdOnlyVarCreate::perform()
  76 {
  77   SALOME::ByteVec data2;
  78   FromVBToByteSeq(_data,data2);
  79   _dsct->createRdOnlyVarInternal(_var_name,data2);
  80 }
  81
  82 void TransactionRdExtVarCreate::perform()
  83 {
  84   SALOME::ByteVec data2;
  85   FromVBToByteSeq(_data,data2);
  86   _dsct->createRdExtVarInternal(_var_name,data2);
  87 }
  88
  89 void TransactionRdWrVarCreate::perform()
  90 {
  91   SALOME::ByteVec data2;
  92   FromVBToByteSeq(_data,data2);
  93   _dsct->createRdWrVarInternal(_var_name,data2);
  94 }
  95
  96 TransactionDictModify::TransactionDictModify(DataScopeServerTransaction *dsct, const std::string& varName):Transaction(dsct,varName),_varc(0)
  97 {
  98   _varc=checkVarExistingAndDict();
  99 }
 100
 101 void TransactionDictModify::prepareRollBackInCaseOfFailure()
 102 {
 103   _zeDataBefore.clear();
 104   PyObject *zeDictPy(_varc->getPyObj());
 105   Py_XINCREF(zeDictPy);
 106   _zeDataBefore=_varc->pickelize(zeDictPy);
 107 }
 108
 109 void TransactionDictModify::rollBack()
 110 {
 111   PyObject *obj(_varc->getPyObjFromPickled(_zeDataBefore));
 112   _varc->setNewPyObj(obj);
 113   _zeDataBefore.clear();
 114 }
 115
 116 TransactionAddKeyValue::TransactionAddKeyValue(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key, const SALOME::ByteVec& value):TransactionDictModify(dsct,varName)
 117 {
 118   std::vector<unsigned char> key2,value2;
 119   FromByteSeqToVB(key,key2);
 120   FromByteSeqToVB(value,value2);
 121   _key=PickelizedPyObjServer::GetPyObjFromPickled(key2,_dsct);
 122   _value=PickelizedPyObjServer::GetPyObjFromPickled(value2,_dsct);
 123 }
 124
 125 void TransactionAddKeyValue::prepareRollBackInCaseOfFailure()
 126 {
 127   TransactionDictModify::prepareRollBackInCaseOfFailure();
 128   _dsct->pingKey(_key);// check that key is OK with all waiting keys
 129 }
 130
 131 void TransactionAddKeyValue::notify()
 132 {
 133   _dsct->notifyKey(getVarName(),_key,_value);
 134 }
 135
 136 TransactionAddKeyValue::~TransactionAddKeyValue()
 137 {
 138   Py_XDECREF(_key);
 139   Py_XDECREF(_value);
 140 }
 141
 142 TransactionAddKeyValueHard::TransactionAddKeyValueHard(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key, const SALOME::ByteVec& value):TransactionAddKeyValue(dsct,varName,key,value)
 143 {
 144 }
 145
 146 void TransactionAddKeyValueHard::perform()
 147 {
 148   _varc->addKeyValueHard(_key,_value);
 149 }
 150
 151 TransactionAddKeyValueErrorIfAlreadyExisting::TransactionAddKeyValueErrorIfAlreadyExisting(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key, const SALOME::ByteVec& value):TransactionAddKeyValue(dsct,varName,key,value)
 152 {
 153   _varc->checkKeyNotAlreadyPresent(_key);
 154 }
 155
 156 void TransactionAddKeyValueErrorIfAlreadyExisting::perform()
 157 {
 158   _varc->addKeyValueErrorIfAlreadyExisting(_key,_value);
 159 }
 160
 161 TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::TransactionRemoveKeyInVarErrorIfNotAlreadyExisting(DataScopeServerTransaction *dsct, const std::string& varName, const SALOME::ByteVec& key):TransactionDictModify(dsct,varName),_key(0)
 162 {
 163   std::vector<unsigned char> key2;
 164   FromByteSeqToVB(key,key2);
 165   _key=PickelizedPyObjServer::GetPyObjFromPickled(key2,_dsct);
 166 }
 167
 168 void TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::perform()
 169 {
 170   _varc->removeKeyInVarErrorIfNotAlreadyExisting(_key);
 171 }
 172
 173 /*!
 174  * no implementation it is not a bug !
 175  */
 176 void TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::notify()
 177 {
 178 }
 179
 180 TransactionRemoveKeyInVarErrorIfNotAlreadyExisting::~TransactionRemoveKeyInVarErrorIfNotAlreadyExisting()
 181 {
 182   Py_XDECREF(_key);
 183 }
 184
 185 TransactionMorphRdWrIntoRdOnly::TransactionMorphRdWrIntoRdOnly(DataScopeServerTransaction *dsct, const std::string& varName):Transaction(dsct,varName)
 186 {
 187 }
 188
 189 SALOME::PickelizedPyObjRdWrServer_ptr TransactionMorphRdWrIntoRdOnly::getVar()
 190 {
 191   SALOME::BasicDataServer_var obj(_dsct->retrieveVarInternal(_var_name.c_str()));
 192   SALOME::PickelizedPyObjRdWrServer_ptr ret(SALOME::PickelizedPyObjRdWrServer::_narrow(obj));
 193   if(CORBA::is_nil(ret))
 194     {
 195       std::ostringstream oss; oss << "TransactionMorphRdWrIntoRdOnly::getVar : var \"" << _var_name << "\" has not expected PickelizedPyObjRdWrServer type !";
 196       throw Exception(oss.str());
 197     }
 198   return ret;
 199 }
 200
 201 void TransactionMorphRdWrIntoRdOnly::prepareRollBackInCaseOfFailure()
 202 {
 203   BasicDataServer *var(_dsct->retrieveVarInternal2(_var_name));
 204   if(!var)
 205     throw Exception("TransactionMorphRdWrIntoRdOnly::prepareRollBackInCaseOfFailure : Returned var is NULL !");
 206   PickelizedPyObjRdWrServer *varc(dynamic_cast<PickelizedPyObjRdWrServer *>(var));
 207   if(!varc)
 208     throw Exception("TransactionMorphRdWrIntoRdOnly::prepareRollBackInCaseOfFailure : Returned var has not expected type !");
 209 }
 210
 211 void TransactionMorphRdWrIntoRdOnly::perform()
 212 {
 213   _dsct->moveStatusOfVarFromRdWrToRdOnly(_var_name);
 214 }
 215
 216 void TransactionMorphRdWrIntoRdOnly::rollBack()
 217 {
 218   _dsct->moveStatusOfVarFromRdOnlyToRdWr(_var_name);
 219 }
 220
 221 /*!
 222  * no implementation it is not a bug !
 223  */
 224 void TransactionMorphRdWrIntoRdOnly::notify()
 225 {
 226 }