Hi Yannick,
Your example should work with 3.01.
Could you provide a running example that I could use to investigate
your problem?
Rene Brun
On Wed, 13 Jun 2001, Patois Yannick wrote:
> Hi rooters,
>
> With latest ROOT version (3.01.05) on linux-ix86, I get the following
> error when running a programm:
>
> ERROR, Streamer is null
> OLSiliconData*fSiHits offset= 72 type=501 [fNhits] Sorted and paired silicon hits
>
> The errors comes from an automatically generated streamer from one
> of my class:
>
> class OLTelescopeData : public TObject
> {
> public:
> OLTelescopeData (void);
> ~OLTelescopeData(void);
> void SetPlasticData (const S_plastic_struct *sp);
> void SetSiHits (OLSiliconData *siData,const int nbHits);
>
> protected:
> // Not written on disk
> double fTeleDist; //! distance to the telescope in mm
> // Plastic brut data
> Float_t fT [4];
> Float_t fE [4];
> Float_t fEa[4];
> // Silicon with reconstructed data
> Int_t fNhits;
> // OLSiliconData fSiHitPrv;
> OLSiliconData *fSiHits; //[fNhits] Sorted and paired silicon hits
> public:
> ClassDef(OLTelescopeData,1) // half) analysed Telescope data class
> };
>
> I try to use the new capabilities of ROOT to automatically generates
> streamers for array of objects.
>
> If I uncomment the line // OLSiliconData fSiHitPrv; and
> comment the following one, the programm runs without errors. For me, it
> means that the OLSiliconData streamer is OK. So what's wrong ?
>
>
> Note: OLSiliconData also use an automatic streamer, but is only made of
> 'simple' data types:
>
> class OLSiliconData : public TObject
> {
> public:
> OLSiliconData (void);
> ~OLSiliconData(void);
> void Set(const OLSiCluster &cir,const OLSiCluster &rad,const double
> teleDist);
> void SetiEiEa(const int iE,const int iEa){fiE=iE;fiEa=iEa;}
> double Phi (void ) const {return(fPhi);}
> double Theta (void ) const {return(fTheta);}
>
> private:
> Char_t fiE,fiEa; // Plastic hit number
> Float_t dEc,dEr; // Eloss in Circular and Radial
> Float_t fTheta,fPhi; // Angle of deviation of the particle
> UChar_t N1c,N1r; // Numer of hit strips
> Float_t Qloc; // Quality of localisation
> public:
> ClassDef(OLSiliconData,1) // Silicon detector particles data
> };
>
>
> Yannick
>
>
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