online_distribution/newbasic/listEventiterator.h

0001 #ifndef __LISTEVENTITERATOR_H__
0002 #define __LISTEVENTITERATOR_H__
0003
0004 #include <cstdio>
0005
0006 #ifndef __CINT__
0007 #include <fstream>
0008 #endif
0009
0010 #include "fileEventiterator.h"
0011 #include "Event.h"
0012
0013 #define FEMAXFILENAMELENGTH 256
0014
0015 /**
0016    The listEventiterator reads the event data from a list of data files
0017    on disk.  It creates and returns pointers to Event objects. At the
0018    end of the file it returns 0 when there are no events left.  */
0019
0020 #ifndef __CINT__
0021 class WINDOWSEXPORT listEventiterator : public Eventiterator {
0022 #else
0023 class  listEventiterator : public Eventiterator {
0024 #endif
0025 public:
0026
0027   virtual ~listEventiterator();
0028
0029   /// This simple constructor just needs the file name of the file
0030   /// that contains, line by line, teh filenames.
0031
0032   listEventiterator(const char *filename);
0033
0034   /**
0035   This constructor gives you a status so you can learn that the creation
0036   of the fileEventiterator object was successful. If the status is not 0,
0037   something went wrong and you should delete the object again.
0038   */
0039   listEventiterator(const char *filename, int &status);
0040
0041   const char * getIdTag() const;
0042
0043   virtual void identify(std::ostream& os = std::cout) const;
0044
0045   virtual const char * getCurrentFileName() const;
0046
0047 /**
0048    this member function returns a pointer to the Event object, or
0049    NULL if there are no events left.
0050 */
0051   Event *getNextEvent();
0052
0053
0054 private:
0055
0056   Eventiterator * getNextIterator();
0057
0058   char thefilename[FEMAXFILENAMELENGTH];
0059   char * listfilename;
0060
0061 #ifndef __CINT__
0062   std::ifstream *liststream;
0063 #endif
0064
0065   Eventiterator *it;
0066   int defunct;
0067   int finished;
0068
0069 };
0070
0071
0072
0073 #endif /* __LISTEVENTITERATOR_H__ */