From 68f2b88a8deb5026142c61b9da270eafd1203c17 Mon Sep 17 00:00:00 2001
From: schutz <schutz@f7af4fe6-9843-0410-8265-dc069ae4e863>
Date: Fri, 13 Dec 2002 16:58:58 +0000
Subject: [PATCH] cleaning before reading new data added in ReadTreeR

---
 PHOS/AliPHOSGetter.cxx | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/PHOS/AliPHOSGetter.cxx b/PHOS/AliPHOSGetter.cxx
index 61a2aeb3e32..7ed5a920fea 100644
--- a/PHOS/AliPHOSGetter.cxx
+++ b/PHOS/AliPHOSGetter.cxx
@@ -1647,6 +1647,8 @@ Int_t AliPHOSGetter::ReadTreeD(const Int_t event)
   //read digits
   if(!Digits(fDigitsTitle) ) 
     PostDigits(fDigitsTitle);
+  else
+    Digits(fDigitsTitle)->Clear() ;
   digitsbranch->SetAddress(DigitsRef(fDigitsTitle)) ;
   digitsbranch->GetEntry(0) ;
   
@@ -1837,6 +1839,17 @@ Int_t AliPHOSGetter::ReadTreeR(const Int_t event)
   // any migh have become obsolete : to be checked
   // See AliPHOSPIDv1    
 
+  //first - clean if necessary
+  if(EmcRecPoints(fRecPointsTitle)){
+    EmcRecPoints(fRecPointsTitle)->Delete() ;
+    CpvRecPoints(fRecPointsTitle)->Delete() ;
+  }
+  //clear TrackSegments
+  if(TrackSegments(fTrackSegmentsTitle))
+    TrackSegments(fTrackSegmentsTitle)->Clear() ;
+  if(RecParticles(fRecParticlesTitle))
+    RecParticles(fRecParticlesTitle)->Clear() ;
+	
   TTree * treeR ;
   if(fToSplit){
     TFile * file = static_cast<TFile*>(gROOT->GetFile(fRecPointsFileName)); 
@@ -1889,7 +1902,6 @@ Int_t AliPHOSGetter::ReadTreeR(const Int_t event)
   } else { 
     if(!EmcRecPoints(fRecPointsTitle) ) 
       PostRecPoints(fRecPointsTitle) ;
-    
     emcbranch->SetAddress(EmcRecPointsRef(fRecPointsTitle)) ;
     emcbranch->GetEntry(0) ;
 
-- 
2.39.3