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rTreeBase.h

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#ifndef rTreeBase_h
#define rTreeBase_h

#include "rTFileBase.h"

#include "TROOT.h"

class TTree;
//-------------------------------------------
/*! 
\e rTreeBase has all the IOfileVI operations defined (open, close, readEvent, writeEvent, etc). <br>  
\e rTreeBase class needs the main branch class of the ROOT tree as a template argument.
The name of the class is also needed by ROOT. The template and its name are forced
arguments of the constructor!.
<ul>    
        <li> The Tree should have only one main branch, the main branch is defined 
        using the template "rCore". 
        <li> The operations of \c open() and \c close() are overwriten from rTFileBase,
        in order to set the address of the main branch of the tree to the template class rCore.
        <li> It provides the method to \c read(), \c write() from/to a ROOT-tree.<br>
        <li> the IOfileVI interface cames from rTFileBase.
</ul>
*/
//----------------------------------------
// JA Hernando, Santa Cruz, CA, 05/15/00
//----------------------------------------
//########################################
template<class rCore> class rTreeBase : public rTFileBase
//########################################
{       
public:

        rTreeBase(rCore* r, char* name):m_core(r),m_class(name)  {clear();};
        virtual ~rTreeBase() {};  


        virtual void open(); // init with this root file
        virtual void clear();

        rCore* core()    {return m_core;}
    // returns the name of the top-level object in the tree
    char* className()       {return m_class; }

        //operations
        void writeEvent();   
        void readEvent();    
        void skipEvent() {IOfileVI::skipEvent();}

protected:

        TTree*        m_RTree; //pointer to the analyzed TTree

        rCore* m_core;

    UInt_t bufsize; 
    Int_t split;   

    char* m_class;   // name of the top-level class to retrieve 
};
#endif

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