// $Id$
//-----------------------------------------------------------------------
//       The GSI Online Offline Object Oriented (Go4) Project
//         Experiment Data Processing at EE department, GSI
//-----------------------------------------------------------------------
// Copyright (C) 2000- GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
//                     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 "TMeshProviderProc.h"

#include "TGo4Log.h"
#include "TGo4Analysis.h"
#include "TGo4EventElement.h"
#include "TGo4UserException.h"

//***********************************************************
// this one is used in TXXXAnlFact
TMeshProviderProc::TMeshProviderProc(const char *name)
  :TGo4EventProcessor(name)
{
   TGo4Log::Info("TMeshProviderProc: Create %s", name);
}

TMeshProviderProc::TMeshProviderProc()
  : TGo4EventProcessor("ProviderProcessor")
{
}

TMeshProviderProc::~TMeshProviderProc()
{
}

//-----------------------------------------------------------
void TMeshProviderProc::SetRealInput()
{
   TGo4EventElement *myinput = GetInputEvent();
   if (!myinput || myinput->CheckEventSource("TGo4EventProcessor")) {
      // source of our input event is processor and not file:
      // we have to reset the pointer from framework!
      // the trick is: name of this processor (up to the "_") is name of required event
      // note that TGo4StepFactory forbids to use same name for different objects,
      // since object name is used as pointer name in the processline call
      TString eventname = GetName();
      eventname.Resize(eventname.Index("_", 1)); //
      myinput = TGo4Analysis::Instance()->GetEventStructure(eventname.Data());
      if (!myinput)
         throw TGo4UserException(3, "Error setting real input event %s", GetName());
      else
         SetInputEvent(myinput);
   }
   // else if(myinput && myinput->CheckEventSource("TGo4FileSource"))
   //    {
   //       // this provider reads from file. ok
   //
   //    }
   // else
   //    {
   //       // neither processor or file input: something is very wrong
   //       throw TGo4UserException(3,"No source found for provider %s", GetName());
   //    }
   //  we skip the last checks for performance reasons...
}