EventDataModel/EventHandle.h

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#ifndef EDM_EVENTHANDLE_H
#define EDM_EVENTHANDLE_H
#include "EventDataModel/Event.h"
#include "EventDataModel/DataBucket.h"
namespace edm { class EventHeader; }

namespace edm {
  class EventHandle {
  public:
    EventHandle();
    virtual ~EventHandle();
    
    void Clear();
    int  ClearLoadFlags();
    void SetLoaded(int branchId) const;
    
    const EventHeader& Header()  const;
    const DataBucket&  MC()      const;
    const DataBucket&  DAQ()     const;
    const DataBucket&  DetSim()  const;
    const DataBucket&  Raw()     const;
    const DataBucket&  RawAux()  const;
    const DataBucket&  Cal()     const;
    const DataBucket&  Reco()    const;
    const DataBucket&  User()    const;
    const DataBucket&  Summary() const;
    
    EventHeader& Header();
    DataBucket&  MC();
    DataBucket&  DetSim();
    DataBucket&  DAQ();
    DataBucket&  Raw();
    DataBucket&  RawAux();
    DataBucket&  Cal();
    DataBucket&  Reco();
    DataBucket&  User();
    DataBucket&  Summary();
    
  protected:
    // Define ID codes for the different branches in a file
    typedef enum {
      kHeaderID,
      kMCID,
      kDetSimID,
      kDAQID,
      kRawID,
      kRawAuxID,
      kCalID,
      kRecoID,
      kUserID,
      kSummaryID,
      kNBranch
    } BranchID_t;
    
    DataBucket& Bucket(BranchID_t branchID)   const;
    bool        IsLoaded(BranchID_t branchID) const;
    virtual int Load(int branchID)            const = 0;
    
  protected:
    int          fObjectCnt;
    mutable bool fIsLoaded[kNBranch]; 

    Event*             fEvent;
    mutable DataBucket fMC;
    mutable DataBucket fDetSim;
    mutable DataBucket fDAQ;
    mutable DataBucket fRaw;
    mutable DataBucket fRawAux;
    mutable DataBucket fCal;
    mutable DataBucket fReco;
    mutable DataBucket fUser;
    mutable DataBucket fSummary;
  };
}
#endif // EDMEVENTHANDLE

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