MLightRootFileReader Class Reference
[Readers]

Inheritance diagram for MLightRootFileReader:

List of all members.

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Detailed Description

Light and fast ROOT file reader that reads only user selected variables.

Author:

Marco Vignati

LightFileReader allows the user to load a only subset of variables, gaining in speed. It should not be used in sequences with a Writer, as the output file will not have all the variables filled, but only those specified in the config of this reader. It also allows to cut data with a .gui file, note that with this reader you don't need MRootFileCut like MRootFileReader.
Note that if Lightening = false and UseCutsFile = false this reader behaves like MRootFileReader (i.e. no cut is applied).
This reader is 2.5 times slower than MQuickFileReader, but allows the user to choose auxdata and members with aliases from the config file.

• Config example:

      reader LightRootFileReader
      verbosity = info
      enable = true
      UseCutsFile = false
      ReadFilesList = true
      EventNumberPrintStep = 10000
      InputFilesList = data/test_speed.list
      InputFileName = data/vsmq0810.root
      Lightening = true
      Lightening:Run = true
      Lightening:Channel = true
      Lightening:StabAmplitude = true
      Lightening:Energy = true
      endmod
      

• Parameters
  • All reader parameters apply
  • Lightening [bool = true]
    if true none of the variables is read except those listed
    if false this reader behaves like MRootFileReader
  • Lightening:AliasName [bool = false]
    load the variable with alias AliasName, both QEvent members and AuxData can be load.
  • UseCutsFile [bool = true]
    use cuts file like those dumped by the gui.
  • CutsFileName [string = NODEFAULT]
    .gui file with cuts. To read this kind of files load GuiSessionReader in the framework section of the cfg.

• Reads:
  • QEventR

• Writes
  • QEvent

Public Member Functions
	MLightRootFileReader (QSequence *s)
	constructor
	~MLightRootFileReader ()
	destructor
void	Open (const std::string &filename)
	Open file.
QEvent *	Fill (QEvent *ev)
	fill event, return NULL if file is finished
void	Close ()
	Close file.
Private Member Functions
void	SetBranchesCache ()
void	ClearBranchesCache ()
Private Attributes
QTree *	fTree
	file handler
QBaseEventR *	fEventR
Long64_t	fEvents
bool	fLightening
TEventList *	fEventList
bool	fUseCutsFile
std::list< Datum< int > >	fIntList
std::list< Datum< double > >	fDoubleList
std::list< Datum< float > >	fFloatList
std::list< Datum< bool > >	fBoolList
std::list< Datum< TObjString * > >	fStringList
std::list< Datum< QObjectR * > >	fQObjectList
std::list< Datum< TObject * > >	fTObjectList
Friends
class	LRootGlobalReader
Classes
class	Datum

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The documentation for this class was generated from the following files:

• /usr/local/cuore/pkg/readerdiana/MLightRootFileReader.hh
• /usr/local/cuore/pkg/readerdiana/MLightRootFileReader.cc

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