UnionVarSet.h

/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
#pragma once
 
#include <tracking/trackFindingCDC/varsets/BaseVarSet.h>
 
#include <tracking/trackFindingCDC/utilities/Named.h>
#include <tracking/trackFindingCDC/utilities/MayBePtr.h>
 
#include <vector>
#include <string>
#include <memory>
 
namespace Belle2 {
  namespace TrackFindingCDC {
    template <class AObject>
    class UnionVarSet : public BaseVarSet<AObject> {
 
    private:
      using Super = BaseVarSet<AObject>;
 
    public:
      using Object = AObject;
 
      using ContainedVarSet = BaseVarSet<Object>;
 
    public:
      void initialize() final
      {
        for (std::unique_ptr<ContainedVarSet>& varSet : m_varSets) {
          this->addProcessingSignalListener(varSet.get());
        }
        Super::initialize();
      }
 
      using Super::extract;
 
      bool extract(const Object* obj) final
      {
        bool result = true;
        for (std::unique_ptr<ContainedVarSet>& varSet : m_varSets) {
          result &= varSet->extract(obj);
        }
        return result;
      }
 
      std::vector<Named<Float_t*>> getNamedVariables(const std::string& prefix) override
      {
        std::vector<Named<Float_t*> > result;
        for (std::unique_ptr<ContainedVarSet>& varSet : m_varSets) {
          std::vector<Named<Float_t*> > extend = varSet->getNamedVariables(prefix);
          result.insert(result.end(), extend.begin(), extend.end());
        }
        return result;
      }
 
      MayBePtr<Float_t> find(const std::string& varName) override
      {
        for (std::unique_ptr<ContainedVarSet>& varSet : m_varSets) {
          MayBePtr<Float_t> found = varSet->find(varName);
          if (found) return found;
        }
        return nullptr;
      }
 
      void push_back(std::unique_ptr<ContainedVarSet> varSet)
      {
        if (varSet) {
          m_varSets.push_back(std::move(varSet));
        }
      }
 
      void clear()
      {
        m_varSets.clear();
      }
 
      size_t size() const
      {
        return m_varSets.size();
      }
 
    private:
      std::vector<std::unique_ptr<ContainedVarSet>> m_varSets;
    };
  }
}