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00001 #ifndef DataFormats_Provenance_FileID_h
00002 #define DataFormats_Provenance_FileID_h
00003 
00004 /*----------------------------------------------------------------------
00005 
00006 Holds a unique file identifier in string form.
00007 
00008 ----------------------------------------------------------------------*/
00009 
00010 #include <string>
00011 
00012 namespace edm {
00013 
00014   class FileID {
00015   public:
00016     FileID() : fid_() {}
00017     explicit FileID(std::string const& id) : fid_(id) {}
00018     bool isValid() const { return !fid().empty(); }
00019     std::string const& fid() const {return fid_;}
00020   private:
00021     std::string fid_;
00022   };
00023 
00024   inline
00025   bool operator==(FileID const& lh, FileID const& rh) {return lh.fid() == rh.fid();}
00026 
00027   inline
00028   bool operator!=(FileID const& lh, FileID const& rh) {return !(lh == rh);}
00029 
00030   std::ostream&
00031   operator<<(std::ostream& os, FileID const& id);
00032 }
00033 #endif
00034

/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_5_3_13_patch3/src/DataFormats/Provenance/interface/FileID.h