dune::AnalysisTreeDataStruct::BranchCreator Class Reference

Little helper functor class to create or reset branches in a tree. More...

Public Member Functions
	BranchCreator (TTree *tree)
void	operator() (std::string name, void *address, std::string leaflist)
	Create a branch if it does not exist, and set its address. More...
void	operator() (std::string name, void *address, const std::stringstream &leaflist)
template<typename T >
void	operator() (std::string name, std::vector< T > &data, std::string leaflist)
template<typename T >
void	operator() (std::string name, std::vector< T > &data)

Public Attributes
TTree *	pTree
	the tree to be worked on More...

Detailed Description

Little helper functor class to create or reset branches in a tree.

Definition at line 1107 of file AnalysisTree_module.cc.

Constructor & Destructor Documentation

dune::AnalysisTreeDataStruct::BranchCreator::BranchCreator ( TTree *  tree )

inline

Definition at line 1110 of file AnalysisTree_module.cc.

: pTree(tree) {}

Member Function Documentation

void dune::AnalysisTreeDataStruct::BranchCreator::operator() ( std::string  name, void *  address, std::string  leaflist  )

inline

Create a branch if it does not exist, and set its address.

Definition at line 1115 of file AnalysisTree_module.cc.

      {
        if (!pTree) return;
        TBranch* pBranch = pTree->GetBranch(name.c_str());
        if (!pBranch) {
          pTree->Branch(name.c_str(), address, leaflist.c_str() /*, bufsize */);
          MF_LOG_DEBUG("AnalysisTreeStructure")
            << "Creating branch '" << name << " with leaf '" << leaflist << "'";
        }
        else if (pBranch->GetAddress() != address) {
          pBranch->SetAddress(address);
          MF_LOG_DEBUG("AnalysisTreeStructure")
            << "Reassigning address to branch '" << name << "'";
        }
        else {
          MF_LOG_DEBUG("AnalysisTreeStructure")
            << "Branch '" << name << "' is fine";
        }
      } // operator()

void dune::AnalysisTreeDataStruct::BranchCreator::operator() ( std::string  name, void *  address, const std::stringstream &  leaflist  )

inline

Definition at line 1135 of file AnalysisTree_module.cc.

      { return this->operator() (name, address, leaflist.str() /*, int bufsize = 32000 */); }

template<typename T >

void dune::AnalysisTreeDataStruct::BranchCreator::operator() ( std::string  name, std::vector< T > &  data, std::string  leaflist  )

inline

Definition at line 1139 of file AnalysisTree_module.cc.

      { return this->operator() (name, (void*) data.data(), leaflist /*, int bufsize = 32000 */); }

template<typename T >

void dune::AnalysisTreeDataStruct::BranchCreator::operator() ( std::string  name, std::vector< T > &  data  )

inline

Definition at line 1143 of file AnalysisTree_module.cc.

      {
        // overload for a generic object expressed directly by reference
        // (as opposed to a generic object expressed by a pointer or
        // to a simple leaf sequence specification);
        // TTree::Branch(name, T* obj, Int_t bufsize, splitlevel) and
        // TTree::SetObject() are used.
        if (!pTree) return;
        TBranch* pBranch = pTree->GetBranch(name.c_str());
        if (!pBranch) {
          pTree->Branch(name.c_str(), &data);
          // ROOT needs a TClass definition for T in order to create a branch,
          // se we are sure that at this point the TClass exists
          MF_LOG_DEBUG("AnalysisTreeStructure")
            << "Creating object branch '" << name
            << " with " << TClass::GetClass(typeid(T))->ClassName();
        }
        else if
          (*(reinterpret_cast<std::vector<T>**>(pBranch->GetAddress())) != &data)
          {
            // when an object is provided directly, the address of the object
            // is assigned in TBranchElement::fObject (via TObject::SetObject())
            // and the address itself is set to the address of the fObject
            // member. Here we check that the address of the object in fObject
            // is the same as the address of our current data type
            pBranch->SetObject(&data);
            MF_LOG_DEBUG("AnalysisTreeStructure")
              << "Reassigning object to branch '" << name << "'";
          }
        else {
          MF_LOG_DEBUG("AnalysisTreeStructure")
            << "Branch '" << name << "' is fine";
        }
      } // operator()

Member Data Documentation

TTree* dune::AnalysisTreeDataStruct::BranchCreator::pTree

the tree to be worked on

Definition at line 1109 of file AnalysisTree_module.cc.

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The documentation for this class was generated from the following file:

• duneana/duneana/AnaTree/AnalysisTree_module.cc