Missing method in the class reference

ROOT
1

Hi,

there is (in the source code (TChain.h)):

virtual Long64_t Process(TSelector *selector, Option_t *option="", Long64_t nentries=kBigNumber, Long64_t firstentry=0);

and implemented in TChain.cxx:

Long64_t TChain::Process(TSelector* selector, Option_t* option, Long64_t nentries, Long64_t firstentry)

which is missing at:

root.cern.ch/root/html518/TChain.html

cheers, Asen.

2

Hi arsen,

It’s hidden from CINT (#ifndef CINT) and thus also from ROOT’s doc. I have no idea why CINT is not allowed to see this function, but I’ll find out.

Cheers, Axel.

3

Hi,

the reason it’s hidden from CINT is because users should not be able to pass an interpreted class deriving from the compiled TSelector through CINT - TChain::Process() will not be able to call the functions re-implemented in the derived, interpreted class, as the vtable doesn’t span the compiled-interpreted border. Instead, TTree::Process() has a hand crafted implementation for CINT. That’s the overload that claims to take a void*. We will try to fix that one to take a TSelector*. The implementation in TChain will continue to be hidden from CINT, but the doc will at least contain the (proper) one from TTree.

I hope that explanation is satisfying for you.

Cheers, Axel.