PWGGA/EMCALTasks/AliEmcalSetupTask.cxx

   1 // $Id$
   2 //
   3 // Task to setup emcal related global objects
   4 //
   5 //
   6
   7 #include <TClonesArray.h>
   8 #include <TGeoManager.h>
   9 #include <TGeoGlobalMagField.h>
  10 #include "AliAnalysisManager.h"
  11 #include "AliCDBManager.h"
  12 #include "AliEMCALGeometry.h"
  13 #include "AliESDEvent.h"
  14 #include "AliEmcalSetupTask.h"
  15 #include "AliGeomManager.h"
  16 #include "AliOADBContainer.h"
  17
  18 ClassImp(AliEmcalSetupTask)
  19
  20 //________________________________________________________________________
  21 AliEmcalSetupTask::AliEmcalSetupTask() :
  22   AliAnalysisTaskSE(),
  23   fOcdbPath(),
  24   fOadbPath("$ALICE_ROOT/OADB/EMCAL"),
  25   fGeoPath("."),
  26   fEsdEv(0),
  27   fIsInit(kFALSE)
  28 {
  29   // Constructor.
  30 }
  31
  32 //________________________________________________________________________
  33 AliEmcalSetupTask::AliEmcalSetupTask(const char *name) :
  34   AliAnalysisTaskSE(name),
  35   fOcdbPath(),
  36   fOadbPath("$ALICE_ROOT/OADB/EMCAL"),
  37   fGeoPath("."),
  38   fEsdEv(0),
  39   fIsInit(kFALSE)
  40 {
  41   // Constructor.
  42   fBranchNames = "ESD:AliESDHeader.,AliESDRun.";
  43 }
  44
  45 //________________________________________________________________________
  46 AliEmcalSetupTask::~AliEmcalSetupTask()
  47 {
  48   // Destructor.
  49 }
  50
  51 //________________________________________________________________________
  52 void AliEmcalSetupTask::UserExec(Option_t *)
  53 {
  54   // Main loop, called for each event.
  55
  56   if (fIsInit)
  57     return;
  58
  59   fEsdEv = dynamic_cast<AliESDEvent*>(InputEvent());
  60   if (!fEsdEv) {
  61     AliError("Task works only on ESD events, returning");
  62     return;
  63   }
  64
  65   AliAnalysisManager *am = AliAnalysisManager::GetAnalysisManager();
  66   if (!am) {
  67     AliError("Manager zero, returning");
  68     return;
  69   }
  70   am->LoadBranch("AliESDRun.");
  71   am->LoadBranch("AliESDHeader.");
  72
  73   Int_t runno = fEsdEv->GetRunNumber();
  74   TString geoname("EMCAL_FIRSTYEARV1");
  75   Int_t year = 2010;
  76   if (runno>139517) {
  77     year = 2011;
  78     geoname = "EMCAL_COMPLETEV1";
  79   } if (runno>170593) {
  80     year = 2012;
  81     geoname = "EMCAL_COMPLETE12SM";
  82   }
  83
  84   AliEMCALGeometry *geom = AliEMCALGeometry::GetInstance(geoname);
  85   if (!geom) {
  86     AliFatal(Form("Can not create geometry: %s",geoname.Data()));
  87     return;
  88   }
  89
  90   AliCDBManager *man = 0;
  91   if (fOcdbPath.Length()>0) {
  92     AliInfo(Form("Setting up OCDB"));
  93     man = AliCDBManager::Instance();
  94     man->SetDefaultStorage(fOcdbPath);
  95     man->SetRun(runno);
  96   }
  97
  98   TGeoManager *geo = AliGeomManager::GetGeometry();
  99   if (!geo) {
 100     TString fname(gSystem->ExpandPathName(Form("%s/geometry_%d.root", fGeoPath.Data(), year)));
 101     if (gSystem->AccessPathName(fname)==0) {
 102       AliInfo(Form("Loading geometry from %s", fname.Data()));
 103       AliGeomManager::LoadGeometry(fname);
 104     } else if (man) {
 105       AliInfo(Form("Loading geometry from OCDB"));
 106       AliGeomManager::LoadGeometry();
 107     }
 108   }
 109   if (geo) {
 110     AliGeomManager::ApplyAlignObjsFromCDB("EMCAL");
 111     AliInfo(Form("Locking geometry"));
 112     geo->LockGeometry();
 113   }
 114
 115   if (!TGeoGlobalMagField::Instance()->GetField()) { // construct field map
 116     AliInfo("Constructing field map from ESD run info");
 117     fEsdEv->InitMagneticField();
 118   }
 119
 120   if (fOadbPath.Length()>0) {
 121     AliOADBContainer emcalgeoCont(Form("emcal"));
 122     emcalgeoCont.InitFromFile(Form("%s/EMCALlocal2master.root",fOadbPath.Data()),
 123                               Form("AliEMCALgeo"));
 124     TObjArray *mobj=dynamic_cast<TObjArray*>(emcalgeoCont.GetObject(runno,"EmcalMatrices"));
 125     if (mobj) {
 126       for(Int_t mod=0; mod < (geom->GetEMCGeometry())->GetNumberOfSuperModules(); mod++){
 127         //AliInfo(Form("Misalignment matrix %d", mod));
 128         geom->SetMisalMatrix((TGeoHMatrix*) mobj->At(mod),mod);
 129       }
 130     }
 131   }
 132
 133   fIsInit = kTRUE;
 134 }