Re: [ROOT] TChain with THbookFiles

From: Rene Brun (Rene.Brun@cern.ch)
Date: Fri Jul 26 2002 - 23:23:31 MEST


Hi Stanislav,

Files in a TChain are connected only when necessary. Once a new file
is connected, the previously connected file is detached. That is why
a call by filename is more appropriate.

TChain does not support THbookTree and we have no plans to support
Hbook files in a TChain. Convert your files.

Rene Brun


On Thu, 25 Jul 2002, Stanislav NESTEROV wrote:

> 
>     Hello Development Team,
> 
>     I think it would be very good idea to implement in TChain class
> support of TFile pointers. In present version one can only add files into
> a chain by something like that
> 
>          chain.AddFile("bbb.root");
> 
> but no way to do this
> 
>         TFile *f = new TFile("baba.root");
>  	chain.AddFile(f);
> 
>     From this point it would be easier to include for example
> THbookFile objects into chain 'cause it inherits from TFile. So may be it
> will be very useful when one can do such thing:
> 
>        THbookFile *hf = new THbookFile("fifi.hbook");
>        chain.AddFile(hf);
> 
>    Thank you for you advance.
> 
> 		Best regards,
> 				Stanislav.
> 



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