MRootFileWriter Class Reference

Root File writer. More...

Inheritance diagram for MRootFileWriter:

Public Member Functions
void	Init (Diana::QEventInspector &evi)
	Initialization class called by the Sequence. More...
Public Member Functions inherited from QRootFileWriterBase
	QRootFileWriterBase ()
	Default ctor. More...
virtual	~QRootFileWriterBase ()
	Defautl dtor (Calls Close()) More...
virtual void	Open (const std::string &filename, const Diana::QEventInspector &evi)
	Open a file. More...
void	Dump (const Diana::QEventInspector &evi)
	Write the event to the output tree. More...
void	Done ()
	Done run at the end of the event loop. More...
void	Close ()
	Close any open files. More...

Additional Inherited Members
Protected Member Functions inherited from QRootFileWriterBase
void	AppendToInput ()
	Append the output files to the input files. More...
virtual void	AppendFileToFile (const char *fromFile, const char *toFile) const
	Merge an individual file into another. More...
Protected Attributes inherited from QRootFileWriterBase
TFile *	fRootOutput
	The current file being written. More...
QTree *	fTree
	The current tree being written. More...
QGlobalWriter *	fGlobalWriter
	The current global writer for the file. More...
QTFilePointer	fRootOutputAddress
	Pointer to the output file. More...
bool	fAppendToInput
	Flag to specify append to input. More...
bool	fSkipGenerated
	Option to skip events that are generated by the reader. More...
std::map< std::string, std::string >	fReaderWriterFiles
	Map of output files and the input files they are synced to. More...

Detailed Description

Root File writer.

Writes QTrees of QEvents in ROOT data files (see also relative reader MRootFileReader)

Author

Marco Vignati

• Config example:

    writer RootFileWriter
    verbosity = info
    enable = true
    OutputDir = .
    OutputFilePrefix = QRFWriter
    OutputFilesList = QRFWriter.list
    AliasFileName = ${DIANA_INSTALL}/cfg/aliases.txt
    endmod
    

• Parameters: (inherited parameters can be found in QFileWriter):
  • AliasFileName [ string = ${DIANA_INSTALL}/cfg/aliases.txt ]: file containing TTree aliases for event members
• Optional Parameters:
  • Description [string = Diana data]: QTree description
  • InclusiveMode [bool = true]: same syntax as MRootFileReader. Use this option to remove variables from output files.
  • CustomAliasFilename [ string = ${DIANA_INSTALL}/cfg/aliases_custom.txt]: file containing additional aliases.
  • AppendToInput [bool = false]: append output to input files. The new quantities are stored in a QTree named "qtree_sequenceName", friend of the main QTree which is named "qtree". To speed up the execution, use this parameter together with the MRootFileReader parameter "InclusiveMode = false". Use when reading files with external programs use QChain to transparently load QTrees and their friends.
  • SkipGeneratedEvent [bool = false]: Do not write events that were generated in the event generator. This is necessary if the RootFileReader has EventGeneratorOn = true and the RootFileWriter has AppendToInput = true.
• Reads:
  • QEvent
• Writes:
  • Branches for each QObject in the QEvent

Definition at line 52 of file MRootFileWriter.hh.

Member Function Documentation

Init()

void MRootFileWriter::Init

(

Diana::QEventInspector &

evi

)

Initialization class called by the Sequence.

Reads the config parameters and tests that the writer won't do something illegal.

See also

QFileWriter::Init().

Definition at line 28 of file MRootFileWriter.cc.

References QFileWriter::Init().

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

• pkg/rootrw/MRootFileWriter.hh
• pkg/rootrw/MRootFileWriter.cc