BranchMapper.cc

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// ======================================================================
//
// BranchMapper: Manages the per event/subRun/run per product provenance.
//
// ======================================================================

#include "canvas/Persistency/Provenance/BranchMapper.h"

using art::BranchMapper;

BranchMapper::BranchMapper(bool const delayedRead) : delayedRead_{delayedRead}
{}

void
BranchMapper::readProvenance() const
{
  if (delayedRead_) {
    delayedRead_ = false;
    readProvenance_();
  }
}

BranchMapper::result_t
BranchMapper::insert(std::unique_ptr<ProductProvenance const>&& pp_ptr)
{
  readProvenance();
  result_t result{pp_ptr.get()};
  entryInfoSet_[result->productID()].reset(pp_ptr.release());
  return result;
}

BranchMapper::result_t
BranchMapper::branchToProductProvenance(ProductID const pid) const
{
  readProvenance();
  auto it = entryInfoSet_.find(pid);
  return it == entryInfoSet_.end() ? result_t() : result_t(it->second.get());
}

// ======================================================================