Re: [ROOT] TTree : Maximum length of unrolled banch name

From: Rene Brun (Rene.Brun@cern.ch)
Date: Thu Feb 20 2003 - 16:30:42 MET


Hi Frank,

Unrolled branch name may be up to 1000 characters.
Could you send me a very short example reproducing this problem?
What do you mean by:
 "The first crashes when writing the tree in the unrollling of the branch."

Rene Brun

Frank Laue wrote:
> 
> Hi Rooters:
> 
> I am writing two identical classes into a TTree using split mode.
> The unrolled TBranch names are:
> 
> MuEvent.mTriggerIdCollection.mNominalTriggerId.mThresholdVersion[32]
> and MuEvent.mTriggerIdCollection.mNTriggerId.mThresholdVersion[32]
> 
> The first crashes when writing the tree in the unrollling of the branch.
> The second works just fine.
> 
> What is the maximum length of the (unrolled) branch name ?
> Is it possible to extend it in a new release.
> 
> Cheers,
>         Frank
> 
> P.S.:
> I am using ROOT/3.03.09 on RH Linux 7.1
> 
> 
> 
> ________________________________________________________________________
> "Programming today is a race between software engineers striving to
> build bigger and better idiot-proof programs, and the Universe trying to
> produce bigger and better idiots. So far, the Universe is winning."
> - Rich Cook
> 
> Frank Laue
> Brookhaven National Laboratory
> Bldg 510a
> Upton, NY-11973
> email: laue@bnl.gov
> phone: (+1) (631)344-8028
> fax:   (+1) (631)344-4206



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