use digits param to extract no of time bins

[u/mrichter/AliRoot.git] / TRD / AliTRDtrackerV1.cxx

diff --git a/TRD/AliTRDtrackerV1.cxx b/TRD/AliTRDtrackerV1.cxx
index b17bbe6f271d0366629fac4175c566350572ab43..30922d7f4176280f063fc0760d4c198110a78e45 100644 (file)
--- a/TRD/AliTRDtrackerV1.cxx
+++ b/TRD/AliTRDtrackerV1.cxx
@@ -49,6 +49,7 @@
 #include "AliTRDrecoParam.h"
 
 #include "AliTRDcluster.h" 
+#include "AliTRDdigitsParam.h"
 #include "AliTRDseedV1.h"
 #include "AliTRDtrackV1.h"
 #include "AliTRDtrackerV1.h"
@@ -112,13 +113,6 @@ AliTRDtrackerV1::AliTRDtrackerV1(AliTRDReconstructor *rec)
     fR[ily] = glb[0]+ AliTRDgeometry::AnodePos()-.5*AliTRDgeometry::AmThick() - AliTRDgeometry::DrThick();
   }
 
-  // initialize calibration values
-  AliTRDcalibDB *trd = NULL;
-  if (!(trd = AliTRDcalibDB::Instance())) {
-    AliFatal("Could not get calibration.");
-  }
-  if(!fgNTimeBins) fgNTimeBins = trd->GetNumberOfTimeBins();
-
   // initialize cluster containers
   for (Int_t isector = 0; isector < AliTRDgeometry::kNsector; isector++) new(&fTrSec[isector]) AliTRDtrackingSector(fGeom, isector);
   
@@ -271,7 +265,8 @@ Int_t AliTRDtrackerV1::PropagateBack(AliESDEvent *event)
 
   AliTRDCalibraFillHisto *calibra = AliTRDCalibraFillHisto::Instance(); // Calibration monitor
   if (!calibra) AliInfo("Could not get Calibra instance\n");
-  
+  if(!fgNTimeBins) CookNTimeBins();
+
   // Define scalers
   Int_t nFound   = 0, // number of tracks found
         nSeeds   = 0, // total number of ESD seeds
@@ -2046,6 +2041,33 @@ AliTRDseedV1* AliTRDtrackerV1::SetTracklet(const AliTRDseedV1 * const tracklet)
   return new ((*fTracklets)[nentries]) AliTRDseedV1(*tracklet);
 }
 
+//____________________________________________________________________
+void AliTRDtrackerV1::CookNTimeBins()
+{ 
+  // Initialize number of time bins
+
+  if(fgNTimeBins){
+    // first look if set by hand
+    AliDebug(2, Form("NTimeBins [%d] (set by user)", fgNTimeBins));
+  } else if(fkReconstructor && fkReconstructor->HasDigitsParam()) {
+    // second look into digits param to avoid DB query
+    fgNTimeBins = fkReconstructor->GetDigitsParam()->GetNTimeBins();
+    AliDebug(2, Form("NTimeBins [%d] (set from digits param)", fgNTimeBins));
+  } else { // third query DB
+    AliTRDcalibDB *trd(NULL);
+    if((trd = AliTRDcalibDB::Instance())) {
+      if((fgNTimeBins = trd->GetNumberOfTimeBinsDCS()) <= 0){
+        AliError("Corrupted DCS Object in OCDB");
+        fgNTimeBins = 24;
+        AliDebug(2, Form("NTimeBins [%d] (set to default)", fgNTimeBins));
+      } else AliDebug(2, Form("NTimeBins [%d] (set from DB)", fgNTimeBins));
+    } else AliFatal("Could not get DB.");
+  }
+  if(fgNTimeBins<=0){
+    AliFatal("Could not get number of time bins.");
+  }
+}
+
 //____________________________________________________________________
 AliTRDtrackV1* AliTRDtrackerV1::SetTrack(const AliTRDtrackV1 * const track)
 {