/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_5_3_13_patch3/src/CondCore/DBCommon/src/ConvertIOVSyncValue.cc

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#include "CondCore/DBCommon/interface/ConvertIOVSyncValue.h"
#include "DataFormats/Provenance/interface/LuminosityBlockID.h"


namespace cond {

  edm::IOVSyncValue toIOVSyncValue(cond::Time_t time, cond::TimeType timetype, bool startOrStop) {
    switch (timetype) {
    case cond::runnumber :
      return edm::IOVSyncValue( edm::EventID(time, 
                                             startOrStop ? 0 : edm::EventID::maxEventNumber(),
                                             startOrStop ? 0 : edm::EventID::maxEventNumber()) 
                                );
    case cond::lumiid :
      {
        edm::LuminosityBlockID l(time);
        return edm::IOVSyncValue(edm::EventID(l.run(),  
                                              l.luminosityBlock(), 
                                              startOrStop ? 0 : edm::EventID::maxEventNumber())
                                 );
      }
    case cond::timestamp :
      return edm::IOVSyncValue( edm::Timestamp(time));
    default:
      return  edm::IOVSyncValue::invalidIOVSyncValue();
    }
  }
  
  cond::Time_t fromIOVSyncValue(edm::IOVSyncValue const & time, cond::TimeType timetype) {
    switch (timetype) {
    case cond::runnumber :
      return time.eventID().run();
    case cond::lumiid : 
      {
        edm::LuminosityBlockID lum(time.eventID().run(), time.luminosityBlockNumber());
        return lum.value();
      }
    case cond::timestamp :
      return time.time().value();
    default:
      return 0;
    }
  }

  // the minimal maximum-time an IOV can extend to
  edm::IOVSyncValue limitedIOVSyncValue(cond::Time_t time, cond::TimeType timetype) {
    switch (timetype) {
    case cond::runnumber :
      // last lumi and event of this run
      return edm::IOVSyncValue( edm::EventID(time, 
                                             edm::EventID::maxEventNumber(),
                                             edm::EventID::maxEventNumber()) 
                                );
  case cond::lumiid : 
      {
        // the same lumiblock
        edm::LuminosityBlockID l(time);
        return edm::IOVSyncValue(edm::EventID(l.run(), 
                                              l.luminosityBlock(), 
                                              edm::EventID::maxEventNumber())
                                 );
      }
    case cond::timestamp :
      // next event ?
      return edm::IOVSyncValue::invalidIOVSyncValue();
    default:
      return  edm::IOVSyncValue::invalidIOVSyncValue();
    }
  }
  
  edm::IOVSyncValue limitedIOVSyncValue(edm::IOVSyncValue const & time, cond::TimeType timetype) {
    switch (timetype) {
    case cond::runnumber :
      // last event of this run
      return edm::IOVSyncValue(edm::EventID(time.eventID().run(),
                                            edm::EventID::maxEventNumber(), 
                                            edm::EventID::maxEventNumber()) 
                               );
    case cond::lumiid :
      // the same lumiblock
      return edm::IOVSyncValue(edm::EventID(time.eventID().run(), 
                                            time.luminosityBlockNumber(), 
                                            edm::EventID::maxEventNumber())
                               );
    case cond::timestamp :
      // same lumiblock
      return edm::IOVSyncValue(edm::EventID(time.eventID().run(), 
                                            time.luminosityBlockNumber(), 
                                            edm::EventID::maxEventNumber())
                               );       
    default:
      return  edm::IOVSyncValue::invalidIOVSyncValue();
    }
  }
  
}