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00001 #ifndef IOPool_Input_RootDelayedReader_h 00002 #define IOPool_Input_RootDelayedReader_h 00003 00004 /*---------------------------------------------------------------------- 00005 00006 RootDelayedReader.h // used by ROOT input sources 00007 00008 ----------------------------------------------------------------------*/ 00009 00010 #include "DataFormats/Provenance/interface/BranchKey.h" 00011 #include "FWCore/Framework/interface/DelayedReader.h" 00012 #include "RootTree.h" 00013 00014 #include <map> 00015 #include <memory> 00016 #include <string> 00017 00018 namespace edm { 00019 class InputFile; 00020 class RootTree; 00021 00022 //------------------------------------------------------------ 00023 // Class RootDelayedReader: pretends to support file reading. 00024 // 00025 00026 class RootDelayedReader : public DelayedReader { 00027 public: 00028 typedef roottree::BranchInfo BranchInfo; 00029 typedef roottree::BranchMap BranchMap; 00030 typedef roottree::BranchMap::const_iterator iterator; 00031 typedef roottree::EntryNumber EntryNumber; 00032 RootDelayedReader( 00033 RootTree const& tree, 00034 boost::shared_ptr<InputFile> filePtr); 00035 00036 virtual ~RootDelayedReader(); 00037 00038 RootDelayedReader(RootDelayedReader const&) = delete; // Disallow copying and moving 00039 RootDelayedReader& operator=(RootDelayedReader const&) = delete; // Disallow copying and moving 00040 00041 private: 00042 virtual WrapperOwningHolder getProduct_(BranchKey const& k, WrapperInterfaceBase const* interface, EDProductGetter const* ep) const; 00043 virtual void mergeReaders_(DelayedReader* other) {nextReader_ = other;} 00044 virtual void reset_() {nextReader_ = 0;} 00045 BranchMap const& branches() const {return tree_.branches();} 00046 EntryNumber const& entryNumber() const {return tree_.entryNumber();} 00047 iterator branchIter(BranchKey const& k) const {return branches().find(k);} 00048 bool found(iterator const& iter) const {return iter != branches().end();} 00049 BranchInfo const& getBranchInfo(iterator const& iter) const {return iter->second; } 00050 // NOTE: filePtr_ appears to be unused, but is needed to prevent 00051 // the file containing the branch from being reclaimed. 00052 RootTree const& tree_; 00053 boost::shared_ptr<InputFile> filePtr_; 00054 DelayedReader* nextReader_; 00055 }; // class RootDelayedReader 00056 //------------------------------------------------------------ 00057 } 00058 #endif
1.7.3