SystApplier.cxx

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#include "CAFAna/Core/SystApplier.h"

#include "StandardRecord/Proxy/SRProxy.h"

#include <iostream>

namespace ana
{
  // --------------------------------------------------------------------------
  void SystApplier::HandleRecord(caf::SRProxy* sr, double wei)
  {
    if(fNominal){
      RecordMultiSink::HandleRecord(sr, wei);
      return;
    }

    caf::SRProxySystController::BeginTransaction();

    double systWei = 1;
    fShift.Shift(sr, systWei);

    if(systWei < 0){
      std::cerr << "Negative weight " << systWei
                << " returned from Syst "
                << "whole applying\n"
                << fShift.ShortName()
                << std::endl;
      abort();
    }

    if(systWei > 0) RecordMultiSink::HandleRecord(sr, wei * systWei);

    // Return StandardRecord to its unshifted form ready for the next
    // histogram.
    caf::SRProxySystController::Rollback();
  }
}