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- Move k4DataSvc to core library - Make PodioDataSvc an alias for now
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * Copyright (c) 2014-2024 Key4hep-Project. | ||
| * | ||
| * This file is part of Key4hep. | ||
| * See https://key4hep.github.io/key4hep-doc/ for further info. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| #ifndef K4FWCORE_PODIODATASVC_H | ||
| #define K4FWCORE_PODIODATASVC_H | ||
|
|
||
| #include "GaudiKernel/DataSvc.h" | ||
| #include "GaudiKernel/IConversionSvc.h" | ||
| // PODIO | ||
| #include <utility> | ||
| #include "podio/CollectionBase.h" | ||
| #include "podio/Frame.h" | ||
| #include "podio/podioVersion.h" | ||
| #if PODIO_BUILD_VERSION >= PODIO_VERSION(0, 99, 0) | ||
| #include "podio/ROOTReader.h" | ||
| #else | ||
| #include "podio/ROOTFrameReader.h" | ||
| namespace podio { | ||
| using ROOTReader = podio::ROOTFrameReader; | ||
| } | ||
| #endif | ||
| // Forward declarations | ||
| #include "k4FWCore/DataWrapper.h" | ||
| class DataWrapperBase; | ||
| class PodioOutput; | ||
| template <typename T> class MetaDataHandle; | ||
|
|
||
| /** @class k4DataSvc | ||
| * | ||
| * An EvtDataSvc for PODIO classes | ||
| * | ||
| * @author B. Hegner | ||
| */ | ||
| class k4DataSvc : public DataSvc { | ||
| template <typename T> friend class MetaDataHandle; | ||
| friend class PodioOutput; | ||
| friend class Lcio2EDM4hepTool; | ||
|
|
||
| public: | ||
| typedef std::vector<std::pair<std::string, podio::CollectionBase*>> CollRegistry; | ||
|
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| StatusCode initialize() final; | ||
| StatusCode reinitialize() final; | ||
| StatusCode finalize() final; | ||
| StatusCode clearStore() final; | ||
| StatusCode i_setRoot(std::string root_path, IOpaqueAddress* pRootAddr) final; | ||
| StatusCode i_setRoot(std::string root_path, DataObject* pRootObj) final; | ||
|
|
||
| /// Standard Constructor | ||
| k4DataSvc(const std::string& name, ISvcLocator* svc); | ||
|
|
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| /// Standard Destructor | ||
| virtual ~k4DataSvc(); | ||
|
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| // Use DataSvc functionality except where we override | ||
| using DataSvc::registerObject; | ||
| /// Overriding standard behaviour of evt service | ||
| /// Register object with the data store. | ||
| virtual StatusCode registerObject(std::string_view parentPath, std::string_view fullPath, | ||
| DataObject* pObject) override final; | ||
|
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| const std::string_view getCollectionType(const std::string& collName); | ||
|
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| template <typename T> StatusCode readCollection(const std::string& collName) { | ||
| DataObject* objectPtr = nullptr; | ||
| if (DataSvc::findObject("/Event", "/" + collName, objectPtr)) { | ||
| debug() << "Collection " << collName << " already read, not reading it again" << endmsg; | ||
| return StatusCode::SUCCESS; | ||
| } | ||
| const T* collection(nullptr); | ||
| collection = static_cast<const T*>(m_eventframe.get(collName)); | ||
| if (collection == nullptr) { | ||
| error() << "Collection " << collName << " does not exist." << endmsg; | ||
| } | ||
| auto wrapper = new DataWrapper<T>; | ||
| wrapper->setData(collection); | ||
| m_podio_datawrappers.push_back(wrapper); | ||
| return DataSvc::registerObject("/Event", "/" + collName, wrapper); | ||
| } | ||
|
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| const podio::Frame& getEventFrame() const { return m_eventframe; } | ||
|
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| /// Resets caches of reader and event store, increases event counter | ||
| void endOfRead(); | ||
|
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| /// TODO: Make this private again after conversions have been properly solved | ||
| podio::Frame& getMetaDataFrame() { return m_metadataframe; } | ||
|
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| private: | ||
| /// PODIO reader for ROOT files | ||
| podio::ROOTReader m_reader; | ||
| /// PODIO Frame, used to initialise collections | ||
| podio::Frame m_eventframe; | ||
| /// PODIO Frame, used to store metadata | ||
| podio::Frame m_metadataframe; | ||
| /// Counter of the event number | ||
| int m_eventNum{0}; | ||
| /// Number of events in the file / to process | ||
| int m_numAvailableEvents{-1}; | ||
| int m_requestedEventMax{-1}; | ||
| /// Whether reading from file at all | ||
| bool m_reading_from_file{false}; | ||
|
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| SmartIF<IConversionSvc> m_cnvSvc; | ||
|
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| // Registry of data wrappers; needed for memory management | ||
| std::vector<DataWrapperBase*> m_podio_datawrappers; | ||
|
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| protected: | ||
| /// ROOT file name the input is read from. Set by option filename | ||
| std::vector<std::string> m_filenames; | ||
| std::string m_filename; | ||
| /// Jump to nth events at the beginning. Set by option FirstEventEntry | ||
| /// This option is helpful when we want to debug an event in the middle of a file | ||
| unsigned m_1stEvtEntry{0}; | ||
| bool m_bounds_check_needed{true}; | ||
| }; | ||
| #endif // CORE_PODIODATASVC_H |
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