Objects.h

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// Copyright 2019-2026 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
 
#ifndef O2_FRAMEWORK_AODNATIVE_OBJECTS_H_
#define O2_FRAMEWORK_AODNATIVE_OBJECTS_H_
 
#include <cstdint>
#include <map>
#include <span>
#include <string>
#include <vector>
 
namespace o2::aod::native
{
 
struct BasketRef {
  uint64_t seek;
  uint32_t nbytes;
  int64_t firstEntry;
  int32_t nEntries;
  bool embedded;
  std::vector<uint8_t> embeddedPayload;
};
 
struct BranchInfo {
  std::string name;
  char leafClass;
  bool isUnsigned;
  int32_t fixedLen;
  std::string countBranch;
  int64_t entries, totBytes, zipBytes;
  std::vector<BasketRef> baskets;
};
 
struct TreeInfo {
  std::string name;
  int64_t entries, totBytes, zipBytes;
  std::vector<BranchInfo> branches;
};
 
size_t leafElementSize(char leafClass);
 
std::map<std::string, std::vector<int>> const& supportedClassVersions();
 
TreeInfo readTreePayload(std::span<const uint8_t> payload, uint16_t keylen, std::string const& file, uint64_t fileOffset);
 
std::map<std::string, std::string> readStringMapPayload(std::span<const uint8_t> payload, uint16_t keylen, std::string const& file, uint64_t fileOffset);
 
} // namespace o2::aod::native
 
#endif // O2_FRAMEWORK_AODNATIVE_OBJECTS_H_