Add three particle correlation loop for correction of auto-correlaton bias

[u/mrichter/AliRoot.git] / TPC / AliTPCSensorTempArray.cxx

diff --git a/TPC/AliTPCSensorTempArray.cxx b/TPC/AliTPCSensorTempArray.cxx
index 1605f70d82792c942665e43d382877135a4c7c48..fc854f3ccaed28b87269161a9cb01eb9e2e84e6c 100644 (file)
--- a/TPC/AliTPCSensorTempArray.cxx
+++ b/TPC/AliTPCSensorTempArray.cxx
@@ -123,8 +123,12 @@ void AliTPCSensorTempArray::ReadSensors(const char *dbEntry)
   // Read list of temperature sensors from text file
   //
   AliCDBEntry *entry = AliCDBManager::Instance()->Get(dbEntry);
+  if (!entry) {
+     AliWarning(Form("No OCDB entry  %s available\n",dbEntry));
+     return;
+  }        
   TTree *tree = (TTree*) entry->GetObject();
-  fSensors = AliTPCSensorTemp::ReadTree(tree);
+  if (tree) fSensors = AliTPCSensorTemp::ReadTree(tree);
 
 }