Chain Class Reference

Chain ROOT trees in a list of files defined by a file pattern. More...

#include <Chain.h>

Inheritance diagram for Chain:

Collaboration diagram for Chain:

Public Member Functions
void	AddFile (const string aPattern)
	Adds files to the chain. More...
string	GetFilePath (const unsigned int aFileIndex)
	Returns the file path of a given ROOT file. More...
string	GetInputFilePattern (void)
	Returns the input file pattern provided in the constructor. More...
unsigned int	GetN (void)
	Returns the number of ROOT files where the designated tree was found. More...
Constructors and destructors
	Chain (const string aChainName, const string aPattern, const bool aVerbose=false)
	Constructor of the Chain class. More...
virtual	~Chain (void)
	Destructor of the Chain class. More...

Private Member Functions
void	ChainPOSIX (const string aRootFilePattern)
	Constructor for POSIX files. More...
void	ChainXROOTD (const vector< string > aRootFiles)
	Constructor for Xrootd files. More...

Private Attributes
string	fchainname
	Tree name. More...
bool	fverbose
	Verbosity flag. More...
vector< string >	rootfilename
	Active root file names. More...
string	spattern
	Input file pattern. More...

Detailed Description

Chain ROOT trees in a list of files defined by a file pattern.

This class inherits from the TChain class from ROOT. Only the constructor was modified and a few functions was added.

Author

Florent Robinet

Constructor & Destructor Documentation

Chain()

Chain::Chain	(	const string	aChainName,
		const string	aPattern,
		const bool	aVerbose = false
	)

Constructor of the Chain class.

Parameters

[in]	aChainName	TTree name to be found in the ROOT files.
[in]	aPattern	File pattern. Any unix-type patterns is supported (list of files separated by spaces, *, ?)
[in]	aVerbose	Flag to activate the verbosity.

~Chain()

Chain::~Chain ( void  )

virtual

Destructor of the Chain class.

Member Function Documentation

AddFile()

void Chain::AddFile

(

const string

aPattern

)

Adds files to the chain.

The TTrees named 'aChainName' found in 'aPattern' are added at the end of the chain.

Parameters

[in]

aPattern

File pattern. Any unix-type patterns is supported (list of files separated by spaces, *, ?)

ChainPOSIX()

void Chain::ChainPOSIX ( const string  aRootFilePattern )

private

Constructor for POSIX files.

Parameters

[in]

aRootFilePattern

ROOT files pattern.

ChainXROOTD()

void Chain::ChainXROOTD ( const vector< string >  aRootFiles )

private

Constructor for Xrootd files.

Parameters

[in]

aRootFiles

List of root files

GetFilePath()

string Chain::GetFilePath ( const unsigned int  aFileIndex )

inline

Returns the file path of a given ROOT file.

Parameters

[in]

aFileIndex

File index.

Precondition

the file index must be valid

See also

GetN()

GetInputFilePattern()

string Chain::GetInputFilePattern ( void  )

inline

Returns the input file pattern provided in the constructor.

GetN()

unsigned int Chain::GetN ( void  )

inline

Returns the number of ROOT files where the designated tree was found.

Member Data Documentation

fchainname

string Chain::fchainname

private

Tree name.

fverbose

bool Chain::fverbose

private

Verbosity flag.

rootfilename

vector<string> Chain::rootfilename

private

Active root file names.

spattern

string Chain::spattern

private

Input file pattern.

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

• src/Utils/Chain.h
• src/Utils/Chain.cc