LauMergeDataFiles Class Reference

Utility class to allow the merging of data files on a expt-by-expt basis. More...

#include <LauMergeDataFiles.hh>

Public Member Functions
	LauMergeDataFiles (const TString &fileName1, const TString &fileName2, const TString &treeName)
	Constructor. More...
virtual	~LauMergeDataFiles ()
	Destructor.
void	process (const TString &fileName)
	Do the merge. More...

Protected Types
typedef std::map< TString, Double_t >	LeafDoubleMap
	Type to relate leaf names with their double-precision value.
typedef std::map< TString, Int_t >	LeafIntegerMap
	Type to relate leaf names with their integer value.
typedef std::map< Int_t, std::pair< Int_t, Int_t > >	ExptsMap
	Type to hold for each experiment the first and last entry numbers in a tree.

Protected Member Functions
void	openInputFiles ()
	Open the specified input files and check that the trees can be read.
void	setupInputTrees ()
	Read the structure of the input trees, create appropriate storage and set the branch addresses.
void	setupOutputTree ()
	Create the structure of the output tree.
void	findExperiments (TTree *tree, ExptsMap &exptsMap)
	Determine the experiments stored a given tree.
Bool_t	checkExperimentMaps () const
	Check that the experiments in each tree match.
void	readExperiment (TTree *tree, const ExptsMap::const_iterator &exptsMap, Int_t offset)
	Read the entries for a given experiment from the given tree and store in the output tree.
void	writeFile ()
	Write the output file.

Private Attributes
TString	fileName1_
	Name of file 1.
TString	fileName2_
	Name of file 2.
TString	treeName_
	Name of the tree.
TFile *	inputFile1_
	Input file 1.
TFile *	inputFile2_
	Input file 2.
TTree *	inputTree1_
	Input tree 1.
TTree *	inputTree2_
	Input tree 2.
TFile *	outputFile_
	Output file.
TTree *	outputTree_
	Output tree.
Int_t	iExpt_
	Storage for the experiment index variable.
Int_t	iEvtWithinExpt_
	Storage for the event-within-experiment index variable.
LeafDoubleMap	doubleVars_
	Storage for double-precision leaves.
LeafIntegerMap	integerVars_
	Storage for integer leaves.
ExptsMap	tree1Expts_
	Experiment -> first and last tree entry for tree 1.
ExptsMap	tree2Expts_
	Experiment -> first and last tree entry for tree 2.

Detailed Description

Utility class to allow the merging of data files on a expt-by-expt basis.

The files are merged such that events for expt 0 from tree 1 will be followed by events for expt 0 from tree 2, then expt 1 from tree1, expt 1 from tree 2, etc.

Definition at line 43 of file LauMergeDataFiles.hh.

Constructor & Destructor Documentation

LauMergeDataFiles()

LauMergeDataFiles::LauMergeDataFiles	(	const TString &	fileName1,
		const TString &	fileName2,
		const TString &	treeName
	)

Constructor.

Parameters

[in]	fileName1	name of first file to be merged
[in]	fileName2	name of second file to be merged
[in]	treeName	name of the tree to read from the input files

Definition at line 38 of file LauMergeDataFiles.cc.

Member Function Documentation

process()

void LauMergeDataFiles::process

(

const TString &

fileName

)

Do the merge.

Parameters

[in]

fileName

name of file to which to write the merged tree

Definition at line 181 of file LauMergeDataFiles.cc.

---

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

• /home/epp/phsdba/Development/Laura++/master-dev/laura/inc/LauMergeDataFiles.hh
• /home/epp/phsdba/Development/Laura++/master-dev/laura/src/LauMergeDataFiles.cc