#include "CbmFieldCreator.h"
#include "CbmFieldConst.h"
#include "CbmFieldMap.h"
#include "CbmFieldMapSym2.h"
#include "CbmFieldMapSym3.h"
#include "CbmRunAna.h"
#include "CbmRuntimeDb.h"


static CbmFieldCreator gCbmFieldCreator;


CbmFieldCreator::CbmFieldCreator()
	:CbmFieldFactory()
{
	fCreator=this;
        fFieldPar=0;
}
CbmFieldCreator::~CbmFieldCreator()
{
}
void CbmFieldCreator::SetParm()
{
  CbmRunAna *Run = CbmRunAna::Instance();
  CbmRuntimeDb *RunDB = Run->GetRuntimeDb();
  fFieldPar = (CbmFieldPar*) RunDB->getContainer("CbmFieldPar");

}

CbmField* CbmFieldCreator::createCbmField()
{ 
  CbmField *fMagneticField=0;

  if ( ! fFieldPar ) {
    cerr << "-E-  No field parameters available!"
	 << endl;
  }else{
	// Instantiate correct field type
	Int_t fType = fFieldPar->GetType();
	if      ( fType == 0 ) fMagneticField = new CbmFieldConst(fFieldPar);
	else if ( fType == 1 ) fMagneticField = new CbmFieldMap(fFieldPar);
	else if ( fType == 2 ) fMagneticField = new CbmFieldMapSym2(fFieldPar);
	else if ( fType == 3 ) fMagneticField = new CbmFieldMapSym3(fFieldPar);
	else cerr << "-W- CbmRunAna::GetField: Unknown field type " << fType
		<< endl;
	cout << "New field at " << fMagneticField << ", type " << fType << endl;
	// Initialise field
	if ( fMagneticField ) {
		fMagneticField->Init();
		fMagneticField->Print();
	}
  }
  return fMagneticField;
}


ClassImp(CbmFieldCreator)