RootReadConfig.py

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# Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
 
from AthenaConfiguration.ComponentAccumulator import ComponentAccumulator
from AthenaConfiguration.ComponentFactory import CompFactory
 
 
def RootReadCfg(flags, tupleName, **kw):
    """Creates a ComponentAccumulator instance containing the
    athena services required for ROOT file reading.
    """
 
    cfg = ComponentAccumulator()
 
    # Add EventSelector
    evSel = CompFactory.Athena.RootNtupleEventSelector("EventSelector",
                                                       InputCollections = flags.Input.Files,
                                                       TupleName = tupleName,
                                                       SkipEvents = flags.Exec.SkipEvents,
                                                       **kw)
    cfg.addService(evSel)
    cfg.addService( CompFactory.Athena.NtupleCnvSvc() )
 
    cfg.setAppProperty("EvtSel", evSel.getFullJobOptName())
 
    return cfg