tfile.TFileService Class Reference

Inheritance diagram for tfile.TFileService:

Public Member Functions
def	__init__
def	stop

Public Attributes
	file

Detailed Description

TFile service.
The file attribute is a TFile that can be used in several analyzers.
The file is closed when the service stops.

Example configuration:

output_rootfile = cfg.Service(
  TFileService,
  'myhists',
  fname='histograms.root',
  option='recreate'
)

Definition at line 4 of file tfile.py.

Constructor & Destructor Documentation

def tfile.TFileService.__init__	(		self,
			cfg,
			comp,
			outdir
	)

cfg must contain:
- fname: file name 
- option: TFile options, e.g. recreate

outdir is the output directory for the TFile

comp is a dummy parameter here.  
It is needed because the looper creates services and analyzers 
in the same way, providing the configuration (cfg), 
the component currently processed (comp), 
and the output directory. 

Other implementations of the TFileService could 
make use of the component information, eg. the component name. 

Definition at line 18 of file tfile.py.

References join().

    def __init__(self, cfg, comp, outdir):
        """
        cfg must contain:
        - fname: file name 
        - option: TFile options, e.g. recreate
        
        outdir is the output directory for the TFile

        comp is a dummy parameter here.  
        It is needed because the looper creates services and analyzers 
        in the same way, providing the configuration (cfg), 
        the component currently processed (comp), 
        and the output directory. 

        Other implementations of the TFileService could 
        make use of the component information, eg. the component name. 
        """
        fname = '/'.join([outdir, cfg.fname])
        self.file = TFile(fname, cfg.option)