VEventFile.h

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#ifndef _io_VEventFile_h_
#define _io_VEventFile_h_

#include <utl/AugerException.h>
#include <io/IoCodes.h>
#include <string>


namespace utl {
  class Branch;
}

namespace evt {
  class Event;
}

namespace io {

  class VEventFile {

  public:
    VEventFile() { }

    VEventFile(const std::string& filename, const Mode mode, utl::Branch* const b = nullptr)
      : fBranch(b) { DefaultOpen(filename, mode); }

    virtual ~VEventFile() { }

    // log error, throw excpt
    virtual void Open(const std::string& filename, const Mode mode = eRead, utl::Branch* const b = nullptr) = 0;

    virtual void Close() = 0;

    virtual void Write(const evt::Event& event) = 0;

    virtual Status Read(evt::Event& event) = 0;

    virtual Status FindEvent(const unsigned int eventId) = 0;

    virtual Status GotoPosition(const unsigned int position) = 0;

    virtual int GetNEvents() = 0;

    const std::string& GetFilename() const { return fFilename; }

  protected:
    VEventFile(const VEventFile& event);
    VEventFile& operator=(const VEventFile& event);

    int DefaultWrite(evt::Event& event);

    int DefaultOpen(const std::string& filename, const Mode mode = eRead);

    utl::Branch* fBranch = nullptr;

    std::string fFilename;
    Mode fMode = eRead;

  };

}


#endif