HowTo 3. Reading tagged data from the ATLAS Geometry DB within ATHENA applications

This example demonstrates retrieval of TIFG structure corresponding to ATLAS tag 'ATLAS-00'. (You can find the code for this example in AtlasTest/DatabaseTest/RDBAccessTest)

1. Step 1. Load RDBAccessSvc library. For that put the following line in your jobOptions file:
   include( "RDBAccessSvc/RDBAccessSvcPdb_jobOptions.py" )
   
   
2. Step 2. In application code, first retrieve a pointer to RDBAccessSvc and connect to the DB
   IRDBAccessSvc* m_iAccessSvc;
   pServiceLocator->service("RDBAccessSvc",m_iAccessSvc);
   m_iAccessSvc->connect();
   
   
3. Step 3. Get the pointer to recordset object
   IRDBRecordset* pTifg = m_iAccessSvc->getRecordset("TIFG","ATLAS-00","ATLAS");
   
   
4. Step 4. Access retrieved data (print it out)
   for(unsigned int ind=0; indsize(); ind++)
   {
   const IRDBRecord* rec = (*pTifg)[ind];
   std::cerr << rec->getInt("SECTION") << " "
   << rec->getInt("NELEM") << " "
   << rec->getDouble("DZ") << "\n";
   }