Switch LCIO to EDM4hep conversion to use k4EDM4hep2LcioConv functionality

CMakeLists.txt

@@ -61,7 +61,6 @@ find_package(Marlin REQUIRED)
 find_package(EDM4HEP REQUIRED)
 find_package(k4FWCore REQUIRED)
 find_package(k4EDM4hep2LcioConv REQUIRED)
-find_package(k4LCIOReader REQUIRED)
 
 include(CTest)
 

k4MarlinWrapper/CMakeLists.txt

@@ -82,7 +82,7 @@ gaudi_add_module(Lcio2EDM4hep
     Gaudi::GaudiAlgLib
     EDM4HEP::edm4hep
     k4FWCore::k4FWCore
-    k4LCIOReader::k4LCIOReader
+    k4EDM4hep2LcioConv::k4EDM4hep2LcioConv
 )
 
 target_include_directories(Lcio2EDM4hep PUBLIC

k4MarlinWrapper/k4MarlinWrapper/converters/Lcio2EDM4hep.h

@@ -1,5 +1,5 @@
-#ifndef K4MARLINWRAPPER_K4LCIOREADERWRAPPER_H
-#define K4MARLINWRAPPER_K4LCIOREADERWRAPPER_H
+#ifndef K4MARLINWRAPPER_LCIO2EDM4HEP_H
+#define K4MARLINWRAPPER_LCIO2EDM4HEP_H
 
 // GAUDI
 #include <GaudiAlg/GaudiTool.h>
@@ -8,15 +8,25 @@
 #include <k4FWCore/DataHandle.h>
 #include <k4FWCore/PodioLegacyDataSvc.h>
 
-// k4LCIOReader
-#include <k4LCIOReader/k4LCIOConverter.h>
-#include <k4LCIOReader/k4LCIOReader.h>
-
 // Converter Interface
 #include "k4MarlinWrapper/converters/IEDMConverter.h"
 
 #include <map>
 #include <string>
+#include <tuple>
+#include <vector>
+
+namespace podio {
+  class CollectionBase;
+}
+
+namespace LCIO2EDM4hepConv {
+  struct LcioEdmTypeMapping;
+}
+
+namespace EVENT {
+  class LCCollection;
+}
 
 class Lcio2EDM4hepTool : public GaudiTool, virtual public IEDMConverter {
 public:
@@ -25,23 +35,41 @@ class Lcio2EDM4hepTool : public GaudiTool, virtual public IEDMConverter {
   virtual StatusCode initialize();
   virtual StatusCode finalize();
 
-  StatusCode convertCollections(lcio::LCEventImpl* lcio_event);
+  // **********************************
+  // - Convert all collections indicated in Tool parameters
+  // - Some collections implicitly convert associated collections
+  // - Convert associated collections from LCRelation for existing EDM4hep relations
+  // - Converted collections are put into TES
+  // **********************************
+  StatusCode convertCollections(lcio::LCEventImpl* lcio_event) override;
 
 private:
   Gaudi::Property<std::map<std::string, std::string>> m_collNames{this, "collNameMapping", {}};
   Gaudi::Property<bool>                               m_convertAll{this, "convertAll", true};
 
-  std::map<std::string, DataObjectHandleBase*> m_dataHandlesMap;
-
   ServiceHandle<IDataProviderSvc> m_eds;
   PodioLegacyDataSvc*             m_podioDataSvc;
 
+  // **********************************
+  // Check if a collection was already registered to skip it
+  // **********************************
   bool collectionExist(const std::string& collection_name);
 
-  template <typename T>
-  void convertRegister(const std::string& edm_name, const std::string& lcio_name,
-                       std::unique_ptr<k4LCIOConverter>& lcio_conver, const lcio::LCCollection* const lcio_coll,
-                       const bool cnv_metadata = false);
+  /**
+   * Register a collection into the TES. If the lcioColl is not a nullptr also
+   * convert the metadata from the input lcio collection.
+   */
+  void registerCollection(std::tuple<const std::string&, std::unique_ptr<podio::CollectionBase>> namedColl,
+                          EVENT::LCCollection*                                                   lcioColl = nullptr);
+
+  /**
+    * Register a collection into the TES. If the lcioColl is not a nullptr also
+    * convert the metadata from the input lcio collection.
+    */
+  void registerCollection(const std::string& name, std::unique_ptr<podio::CollectionBase>&& coll,
+                          EVENT::LCCollection* lcioColl = nullptr) {
+    registerCollection(std::make_tuple(name, std::move(coll)), lcioColl);
+  }
 };
 
 #endif