examples/PodioDatamodel/EventInfoCollection.h

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