RHistogramCnv.h

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00001 // $Id: RHistogramCnv.h,v 1.4 2007/01/08 17:16:02 mato Exp $
00002 #ifndef ROOTHISTCNV_RHISTOGRAMCNV_H
00003 #define ROOTHISTCNV_RHISTOGRAMCNV_H 1
00004 
00005 // Include files
00006 #include "RConverter.h"
00007 #include "GaudiKernel/SmartIF.h"
00008 #include "GaudiKernel/DataObject.h"
00009 #include "GaudiKernel/IRegistry.h"
00010 #include "GaudiKernel/IOpaqueAddress.h"
00011 #include "GaudiKernel/HistogramBase.h"
00012 #include "RootObjAddress.h"
00013 #include "TArray.h"
00014 #include <memory>
00015 
00016 namespace RootHistCnv {
00017 
00030   template<typename T,typename S,typename Q> class RHistogramCnv : public RConverter {
00031     template <typename CLASS> struct TTH : public CLASS {
00032       void CopyH(TObject& o) { CLASS::Copy(o); }
00033     };
00034   public:
00036     virtual StatusCode createObj(IOpaqueAddress* pAddr, DataObject*& refpObj) {
00037       refpObj = ROOT::Reflex::PluginService::CreateWithId<DataObject*>(objType());
00038       RootObjAddress *r = dynamic_cast<RootObjAddress*>(pAddr);
00039       Q* h = dynamic_cast<Q*>(refpObj);
00040       if ( r && h )   {
00041         // Need to flip representation .... clumsy for the time being, because
00042         // THXY constructor has no "generic" copy constructor
00043         std::auto_ptr<T> p(new T());
00044         S *s = dynamic_cast<S*>(r->tObj());
00045         if ( s && p.get() )  {
00046           TTH<S>* casted = (TTH<S>*)s;
00047           TArray* a = dynamic_cast<TArray*>(s);
00048           casted->CopyH(*p);
00049           if ( 0 != a )  {
00050             p->Set(a->GetSize());
00051             p->Reset();
00052             p->Add(s);
00053             h->adoptRepresentation(p.release());
00054             return StatusCode::SUCCESS;
00055           }
00056         }
00057       }
00058       return error("Cannot create histogram - invalid address.");
00059     }
00061     virtual StatusCode updateObj(IOpaqueAddress* /* pAddr */, DataObject* /* pObj */)  {
00062       return StatusCode::SUCCESS;
00063     }
00065     virtual TObject* createPersistent(DataObject* pObj)   {
00066       Q* h = dynamic_cast<Q*>(pObj);
00067       if ( 0 != h ) {
00068         T *r = dynamic_cast<T*>(h->representation());
00069         if ( r )   {
00070           T* c = new T();
00071           TArray* a = dynamic_cast<TArray*>(r);
00072           ((TTH<S>*)r)->CopyH(*c);
00073           if ( 0 != a )  {
00074             c->Set(a->GetSize());
00075             c->Reset();
00076             c->Add(r);
00077             c->SetName(pObj->registry()->name().c_str()+1);
00078             return c;
00079           }
00080         }
00081       }
00082       error("Histogram object is invalid!");
00083       return 0;
00084     }
00086     static const CLID& classID();
00088     RHistogramCnv(ISvcLocator* svc) : RConverter(classID(), svc) {}
00089     virtual ~RHistogramCnv() {}
00090   };
00091 }       // namespace RootHistCnv
00092 #endif  // ROOTHISTCNV_RHISTOGRAMCNV_H
Gaudi Framework, version v22r0

RHistogramCnv.h
