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/Go4EventServer/TGo4TreeSource.cxx

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//---------------------------------------------------------------
//        Go4 Release Package v2.10-5 (build 21005) 
//                      03-Nov-2005
//---------------------------------------------------------------
//       The GSI Online Offline Object Oriented (Go4) Project
//       Experiment Data Processing at DVEE department, GSI
//---------------------------------------------------------------
//
//Copyright (C) 2000- Gesellschaft f. Schwerionenforschung, GSI
//                    Planckstr. 1, 64291 Darmstadt, Germany
//Contact:            http://go4.gsi.de
//----------------------------------------------------------------
//This software can be used under the license agreements as stated
//in Go4License.txt file which is part of the distribution.
//----------------------------------------------------------------
#include "TGo4TreeSource.h"

#include <iostream.h>

#include "TTree.h"

#include "Go4Log/TGo4Log.h"
#include "Go4EventServer/TGo4MainTree.h"
#include "Go4EventServer/TGo4TreeSourceParameter.h"

TGo4TreeSource::TGo4TreeSource(const char* name)
: TGo4EventSource(name), fxTree(0), fxBranch(0)
{
   TRACE((15,"TGo4TreeSource::TGo4TreeSource(const char*)",__LINE__, __FILE__));
   Open();
}

TGo4TreeSource::TGo4TreeSource(TGo4TreeSourceParameter* par)
: TGo4EventSource(par->GetName()), fxTree(0), fxBranch(0)
{
   TRACE((15,"TGo4TreeSource::TGo4TreeSource(TGo4TreeSourceParameter*)",__LINE__, __FILE__));
   Open();
}


TGo4TreeSource::TGo4TreeSource()
: TGo4EventSource("Go4TreeSource"), fxTree(0), fxBranch(0)
{
   TRACE((15,"TGo4TreeSource::TGo4TreeSource()",__LINE__, __FILE__));
}

TGo4TreeSource::~TGo4TreeSource()
{
   TRACE((15,"TGo4TreeSource::~TGo4TreeSource()",__LINE__, __FILE__));
   // we have to readout rest of branch into memory before whole tree is written again
   Int_t current=fxSingletonTree->GetCurrentIndex();
   Int_t max=fxSingletonTree->GetMaxIndex();
   Int_t z=0;
   for(Int_t ix=current; ix< max; ++ix)
      {
         z++;
         if( fxBranch->GetEntry(ix) == 0)
            {
               cout << "reached end of branch after "<< z << " dummy event retrieves"<<endl;
               break;
            }
         else { }

      }
   cout << "treesource "<< GetName() << " is destroyed after "<< z <<"dummy retrieves."<< endl;
}

Int_t TGo4TreeSource::Open()
{
 TRACE((15,"TGo4TreeSource::Open()",__LINE__, __FILE__));

Text_t buffer [TGo4EventSource::fguTXTLEN];
snprintf(buffer,TGo4EventSource::fguTXTLEN -5, GetName());
strcat(buffer,"."); // for branches containing the same event structure

fxSingletonTree=TGo4MainTree::Instance();
fxTree= fxSingletonTree->GetTree();
fxBranch= fxTree->GetBranch(buffer);
if(fxBranch)
   {
      TGo4Log::Debug(" TreeSource: Found existing branch %s ", buffer);
   }
else
   {
      ThrowError(77,0,"!!! ERROR: Branch %s  not found!!!",buffer);
      //TGo4Log::Debug(" !!! TreeSource: ERROR - no branch %s ", buffer);
   }

return 0;
}



Bool_t TGo4TreeSource::BuildEvent(TGo4EventElement* dest)
{
   TRACE((12,"TGo4TreeSource::BuildEvent(TGo4EventElement*)",__LINE__, __FILE__));
   //
   Bool_t rev=kTRUE;
   if(dest==0) ThrowError(0,22,"!!! ERROR BuildEvent: no destination event!!!");
   if(fxBranch==0) ThrowError(0,23,"!!! ERROR BuildEvent: branch was not initialized !!!");
   fxBranch->SetAddress(&dest);
   Int_t current=fxSingletonTree->GetCurrentIndex();
   if( fxBranch->GetEntry(current) == 0)
      {
         ThrowError(0,24,"!!! ERROR BuildEvent: getting branch entry failed !!!");
      }
   else
      {

         rev=kTRUE;
      } // if( fxBranch->GetEntry(current) == 0)
   return rev;
}

ClassImp(TGo4TreeSource)

//----------------------------END OF GO4 SOURCE FILE ---------------------

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