TOF: Add unfied container for parameters on ccdb

[njacazio]

@noferini

• add container to store pass and parameters in a map scheme

[njacazio]

@noferini I had to rework a bit the code and the naming of the member functions could you confirm that it works with your macro?

[noferini]

@noferini I had to rework a bit the code and the naming of the member functions could you confirm that it works with your macro?

I sent you the macro

[shahor02]

The error

 LOG(debug) << "Changing parametrization corresponding to key " << key << " from size " << mParameters[key].size() < " to " << p.GetName() << " of size " << p.size();
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

is genuine.

[njacazio]

Hi @shahor02 indeed, thanks for spotting this

[shahor02]

@njacazio rechecking the code: don't you need to add a dictionary (ClassDefN and entry in the LinkDef.h) for the Parameters class?
Note that for the templated classes the template parameter change is not supported by the root schema evolution, i.e. a legacy Parameter<A> will not readable with Parameter<B> even with class version change.

[njacazio]

@shahor02 thanks a lot for the comment!
Indeed I think it will be fine, in principle we don't need the schema evolution. The Parameter<int> class is just a way to define sets of parameters with defined names (e.g. in https://github.com/AliceO2Group/AliceO2/pull/10364/files#diff-ca1417bbfb70e51406dde90ebbaf76c473f283d1c82548356e2093828d9228a4R64) that will make it easy to distribute the parameters taken from the ParameterCollection expected to be stored on the ccdb.
I hope I understood your point correctly and this clears your doubts.

[shahor02]

@njacazio OK for template, but since this is persistent object, I still think you need a ClassDefNF + entry in the LinkDef.

[noferini]

Hi, shall we merge this PR?

[shahor02]

Hi,
I can merge it, but did you check that you can write and read back the object? As I wrote above, the Parameters class, which is supposed to be persistent, has not ClassDefNV

[noferini]

Hi @shahor02,
I didn't have any problem to write and read.

TFile algFile("ccdb.root", "recreate");
algFile.WriteObjectAny(&tof, "o2::tof::ParameterCollection", "ccdb_object");
algFile.Close();

TFile *f = new TFile("ccdb.root");
o2::tof::ParameterCollection *a = (o2::tof::ParameterCollection *) f->Get("ccdb_object");

[shahor02]

OK, thanks, apparently it is able to use the ClassDef of the derived class. Merging