Service to read/write ROOT histograms from/to different DB systems. More...

#include <HistoDB.h>

Public Types
enum	EStatus { kGood, kFail }

Public Member Functions
void	AddFileExt (const char type, const char ext)
	add file extension More...

void	AddOption (const char type, Option_t opt, const char *mode="reset")
	add option More...

	ClassDef (HistoDB, 0)
	rootcint dictionary More...

virtual TH1 *	Get (int i)
	to get histo number i of the current DB More...

virtual TH1 *	Get (const char *name)
	to get an histo by its name More...

int	GetVerboseLevel ()

	HistoDB ()

virtual bool	IsStatus (HistoDB::EStatus status)
	to get the current status flag for the HistoDB stream More...

virtual void	ls (Option_t *opt="cdb")
	to list the current configuration More...

void	MakeConverter (const char *classname) const
	Use it if you want to extend the DB types handled. More...

virtual HistoConverter *	Open (const char , const char )
	to open a new DB service More...

virtual HistoDB &	operator<< (const TH1 &)
	to write an histogram in the current Histo DB service More...

virtual HistoDB &	operator<< (const TH2 &)
	to write a matrix in the current Histo DB service More...

virtual HistoDB &	operator<< (const char *name)
	to change the current DB service More...

virtual HistoDB &	operator<< (const THStack &)
	to write several histograms in the current Histo DB service More...

virtual HistoDB &	operator>> (TH1 &)
	to read an histogram from the current Histo DB service More...

virtual HistoDB &	operator>> (TH2 &)
	to read a matrix from the current Histo DB service More...

virtual HistoDB &	operator>> (THStack &)
	to read several histograms from the current Histo DB service More...

virtual void	SetCurrent (const char *)
	change the current service. It uses the alias defined in open More...

virtual void	SetMode (Option_t *)
	to change the mode (overwrite/version) of the current DB service More...

virtual void	SetMode (const char , Option_t )
	to change the mode (overwrite/version) of one of the DB service More...

virtual void	SetStatus (HistoDB::EStatus status=kGood)
	modify the status flag for the HistoDB stream More...

void	SetVerboseLevel (const int)

virtual bool	Write (const TH1 &)
	to write a TH1 histogram in the current Histo DB service More...

virtual bool	Write (const TH2 &)
	to write a TH2 histogram in the current Histo DB service More...

virtual	~HistoDB ()

Protected Attributes
int	fStatus

Detailed Description

Service to read/write ROOT histograms from/to different DB systems.

This class is an interface to help reading/writing/converting ROOT histograms from/to other existing or future way to store spectra.
The interface is design as a growing system to help adding new DB types without having to recompile HistoDB. If you want to add your own new format, you will have to write a new class that inherits from HistoConverter. To help you in this task, HistoDB provides the method MakeConverter that built for you the basic and needed structure of the new class. This class inherits from HistoConverter. DO NOT DELETE anything from this file.

Current supported convertion format are:

null : black hole
rad : Radware for one and two dimensionnal spectra [RADConverter]
gpsi : reading mode only [GPSIConverter]
eg : reading mode only [EGConverter]
ascii : reading mode only [ASCConverter]

If you want to add your own format, see RADConverter as a example.

Some way to use this interface (see also DemoHistoDB.C):

    TH1F h;
    HistoDB hdb;

    hdb.Open("in","gpsi:/where/i/have/my/spectra.s");
    hdb.Open("out","rad:/where/i/want/to/convert");

check out that they are both open. hdb.ls("all");

h.SetName("the_name_of_the_specrum_i_want_to_convert"); hdb << "in" >> h << "out" << h; // to read a gpsi spectrum and convert it into a rad format

Author: Christophe Theisen & Olivier Stezowski

Definition at line 90 of file HistoDB.h.

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

Public Types

Public Member Functions

Protected Attributes

Detailed Description