Norbert Danneberg wrote:
>
> Hi Rooters,
>
> If I construct a TClonesaray of a class wich contains besides some
> Int_t datamebers also a TList :
> e.g.
> class BGO : public TObject
> {
> public
> Int_t fAdc;
> Int_t fTdc;
> TList fAllTdcs;
>
> public:
> Memeberfunctions
> }
> Class Event: public TObject
> public:
> TClonesaary *BGOlist; // TClonesarray of BGO
>
> public:
> Memebrfunctions
> }
>
> and use TTree:Branch with Splitlevel=1, is the TList Object then written
> to disk ? Or is there no output buffer created for this TList ?
>
Norbert,
As explained at http://root.cern.ch/root/HowtoWriteTree.html
the automatic split mode cannot accept the class in TClonesArray
to have a variable part.
If your list of TDCs for a block is limited to a few,
you can specify a static array fTDCs[5] for example.
If you preset the array to 0, Root will compress the unused part.
This also simplifies a lot of things.
Rene Brun
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