include/edm4hep/EventHeaderCollection.h

0001 // AUTOMATICALLY GENERATED FILE - DO NOT EDIT
0002
0003 #ifndef EDM4HEP_EventHeaderCollection_H
0004 #define EDM4HEP_EventHeaderCollection_H
0005
0006 // datamodel specific includes
0007 #include "edm4hep/EventHeader.h"
0008 #include "edm4hep/EventHeaderCollectionData.h"
0009 #include "edm4hep/EventHeaderObj.h"
0010 #include "edm4hep/MutableEventHeader.h"
0011
0012 // podio specific includes
0013 #include "podio/CollectionBase.h"
0014 #include "podio/ICollectionProvider.h"
0015
0016 #if defined(PODIO_JSON_OUTPUT) && !defined(__CLING__)
0017 #include "nlohmann/json_fwd.hpp"
0018 #endif
0019
0020 #include <algorithm>
0021 #include <cstddef>
0022 #include <memory>
0023 #include <mutex>
0024 #include <ostream>
0025 #include <string_view>
0026 #include <vector>
0027
0028 namespace podio {
0029 struct RelationNames;
0030 }
0031
0032 namespace edm4hep {
0033
0034 class EventHeaderCollectionIterator {
0035 public:
0036   EventHeaderCollectionIterator(size_t index, const EventHeaderObjPointerContainer* collection) :
0037       m_index(index), m_object(podio::utils::MaybeSharedPtr<EventHeaderObj>{nullptr}), m_collection(collection) {
0038   }
0039
0040   EventHeaderCollectionIterator(const EventHeaderCollectionIterator&) = delete;
0041   EventHeaderCollectionIterator& operator=(const EventHeaderCollectionIterator&) = delete;
0042
0043   bool operator!=(const EventHeaderCollectionIterator& x) const {
0044     return m_index != x.m_index; // TODO: may not be complete
0045   }
0046
0047   bool operator==(const EventHeaderCollectionIterator& x) const {
0048     return m_index == x.m_index; // TODO: may not be complete
0049   }
0050
0051   EventHeader operator*();
0052   EventHeader* operator->();
0053   EventHeaderCollectionIterator& operator++();
0054
0055 private:
0056   size_t m_index;
0057   EventHeader m_object;
0058   const EventHeaderObjPointerContainer* m_collection;
0059 };
0060
0061 class EventHeaderMutableCollectionIterator {
0062 public:
0063   EventHeaderMutableCollectionIterator(size_t index, const EventHeaderObjPointerContainer* collection) :
0064       m_index(index), m_object(podio::utils::MaybeSharedPtr<EventHeaderObj>{nullptr}), m_collection(collection) {
0065   }
0066
0067   EventHeaderMutableCollectionIterator(const EventHeaderMutableCollectionIterator&) = delete;
0068   EventHeaderMutableCollectionIterator& operator=(const EventHeaderMutableCollectionIterator&) = delete;
0069
0070   bool operator!=(const EventHeaderMutableCollectionIterator& x) const {
0071     return m_index != x.m_index; // TODO: may not be complete
0072   }
0073
0074   bool operator==(const EventHeaderMutableCollectionIterator& x) const {
0075     return m_index == x.m_index; // TODO: may not be complete
0076   }
0077
0078   MutableEventHeader operator*();
0079   MutableEventHeader* operator->();
0080   EventHeaderMutableCollectionIterator& operator++();
0081
0082 private:
0083   size_t m_index;
0084   MutableEventHeader m_object;
0085   const EventHeaderObjPointerContainer* m_collection;
0086 };
0087
0088 /**
0089 A Collection is identified by an ID.
0090 */
0091 class EventHeaderCollection : public podio::CollectionBase {
0092 public:
0093   using value_type = EventHeader;
0094   using const_iterator = EventHeaderCollectionIterator;
0095   using iterator = EventHeaderMutableCollectionIterator;
0096   using difference_type = ptrdiff_t;
0097   using size_type = size_t;
0098
0099   EventHeaderCollection();
0100   EventHeaderCollection(EventHeaderCollectionData&& data, bool isSubsetColl);
0101   // This is a move-only type
0102   EventHeaderCollection(const EventHeaderCollection&) = delete;
0103   EventHeaderCollection& operator=(const EventHeaderCollection&) = delete;
0104   EventHeaderCollection(EventHeaderCollection&&) = default;
0105   EventHeaderCollection& operator=(EventHeaderCollection&&) = default;
0106
0107   //  EventHeaderCollection(EventHeaderVector* data, uint32_t collectionID);
0108   ~EventHeaderCollection() override;
0109
0110   constexpr static auto typeName = "edm4hep::EventHeaderCollection";
0111   constexpr static auto valueTypeName = "edm4hep::EventHeader";
0112   constexpr static auto dataTypeName = "edm4hep::EventHeaderData";
0113
0114   void clear() final;
0115
0116   /// Print this collection to the passed stream
0117   void print(std::ostream& os = std::cout, bool flush = true) const final;
0118
0119   /// operator to allow pointer like calling of members a la LCIO
0120   EventHeaderCollection* operator->() {
0121     return static_cast<EventHeaderCollection*>(this);
0122   }
0123
0124   /// Append a new object to the collection, and return this object.
0125   MutableEventHeader create();
0126
0127   /// Append a new object to the collection, and return this object.
0128   /// Initialized with the parameters given
0129   template <typename... Args>
0130   MutableEventHeader create(Args&&... args);
0131
0132   /// number of elements in the collection
0133   std::size_t size() const final;
0134
0135   /// maximal number of elements in the collection
0136   std::size_t max_size() const final;
0137
0138   /// Is the collection empty
0139   bool empty() const final;
0140
0141   /// fully qualified type name
0142   const std::string_view getTypeName() const final {
0143     return typeName;
0144   }
0145   /// fully qualified type name of elements - with namespace
0146   const std::string_view getValueTypeName() const final {
0147     return valueTypeName;
0148   }
0149   /// fully qualified type name of stored POD elements - with namespace
0150   const std::string_view getDataTypeName() const final {
0151     return dataTypeName;
0152   }
0153   /// schema version
0154   podio::SchemaVersionT getSchemaVersion() const final;
0155
0156   bool isSubsetCollection() const final {
0157     return m_isSubsetColl;
0158   }
0159
0160   void setSubsetCollection(bool setSubset = true) final;
0161
0162   /// Returns the const object of given index
0163   EventHeader operator[](std::size_t index) const;
0164   /// Returns the object of a given index
0165   MutableEventHeader operator[](std::size_t index);
0166   /// Returns the const object of given index
0167   EventHeader at(std::size_t index) const;
0168   /// Returns the object of given index
0169   MutableEventHeader at(std::size_t index);
0170
0171   /// Append object to the collection
0172   void push_back(const MutableEventHeader& object);
0173   /// Append an object to the (subset) collection
0174   void push_back(const EventHeader& object);
0175
0176   void prepareForWrite() const final;
0177   void prepareAfterRead() final;
0178   bool setReferences(const podio::ICollectionProvider* collectionProvider) final;
0179
0180   /// Get the collection buffers for this collection
0181   podio::CollectionWriteBuffers getBuffers() final;
0182
0183   void setID(uint32_t ID) final {
0184     m_collectionID = ID;
0185     if (!m_isSubsetColl) {
0186       std::for_each(m_storage.entries.begin(), m_storage.entries.end(), [ID](EventHeaderObj* obj) {
0187         obj->id = {obj->id.index, static_cast<uint32_t>(ID)};
0188       });
0189     }
0190     m_isValid = true;
0191   }
0192
0193   uint32_t getID() const final {
0194     return m_collectionID;
0195   }
0196
0197   bool isValid() const final {
0198     return m_isValid;
0199   }
0200
0201   size_t getDatamodelRegistryIndex() const final;
0202
0203   // support for the iterator protocol
0204   iterator begin() {
0205     return iterator(0, &m_storage.entries);
0206   }
0207   const_iterator begin() const {
0208     return const_iterator(0, &m_storage.entries);
0209   }
0210   const_iterator cbegin() const {
0211     return begin();
0212   }
0213   iterator end() {
0214     return iterator(m_storage.entries.size(), &m_storage.entries);
0215   }
0216   const_iterator end() const {
0217     return const_iterator(m_storage.entries.size(), &m_storage.entries);
0218   }
0219   const_iterator cend() const {
0220     return end();
0221   }
0222
0223   std::vector<std::int32_t> eventNumber(const size_t nElem = 0) const;
0224   std::vector<std::int32_t> runNumber(const size_t nElem = 0) const;
0225   std::vector<std::uint64_t> timeStamp(const size_t nElem = 0) const;
0226   std::vector<double> weight(const size_t nElem = 0) const;
0227
0228 private:
0229   // For setReferences, we need to give our own CollectionData access to our
0230   // private entries. Otherwise we would need to expose a public member function
0231   // that gives access to the Obj* which is definitely not what we want
0232   friend class EventHeaderCollectionData;
0233
0234   bool m_isValid{false};
0235   mutable bool m_isPrepared{false};
0236   bool m_isSubsetColl{false};
0237   uint32_t m_collectionID{0};
0238   mutable std::unique_ptr<std::mutex> m_storageMtx{nullptr};
0239   mutable EventHeaderCollectionData m_storage{};
0240 };
0241
0242 std::ostream& operator<<(std::ostream& o, const EventHeaderCollection& v);
0243
0244 template <typename... Args>
0245 MutableEventHeader EventHeaderCollection::create(Args&&... args) {
0246   if (m_isSubsetColl) {
0247     throw std::logic_error("Cannot create new elements on a subset collection");
0248   }
0249   const int size = m_storage.entries.size();
0250   auto obj = new EventHeaderObj({size, m_collectionID}, {std::forward<Args>(args)...});
0251   m_storage.entries.push_back(obj);
0252
0253   // Need to initialize the relation vectors manually for the {ObjectID, EventHeaderData} constructor
0254   obj->m_weights = new std::vector<double>();
0255   m_storage.createRelations(obj);
0256   return MutableEventHeader(podio::utils::MaybeSharedPtr(obj));
0257 }
0258
0259 #if defined(PODIO_JSON_OUTPUT) && !defined(__CLING__)
0260 void to_json(nlohmann::json& j, const EventHeaderCollection& collection);
0261 #endif
0262
0263 } // namespace edm4hep
0264
0265 #endif