Reducing ZDC pedestal OCDB to 1 object

[u/mrichter/AliRoot.git] / ANALYSIS / AliMultiEventInputHandler.cxx

diff --git a/ANALYSIS/AliMultiEventInputHandler.cxx b/ANALYSIS/AliMultiEventInputHandler.cxx
index 7c6da2987ae57aa51c8a8d77019fa0afef527413..aec7d5162abe34c1024115bd1f815cc54940657c 100644 (file)
--- a/ANALYSIS/AliMultiEventInputHandler.cxx
+++ b/ANALYSIS/AliMultiEventInputHandler.cxx
@@ -55,17 +55,9 @@ AliMultiEventInputHandler::AliMultiEventInputHandler(Int_t size, Int_t format) :
     fIndex(0),
     fCurrentBin(0),
     fEventPool(0),
-    fEventBuffer(new AliVEvent*[size])
+    fEventBuffer(0)
 {
-  // Default constructor
-    for (Int_t i = 0; i < size; i++) 
-       if (fFormat == 1) {
-           fEventBuffer[i] = new AliAODEvent();
-       } else if (fFormat == 0) {
-           fEventBuffer[i] = new AliESDEvent();
-       } else{
-           AliWarning(Form("Unknown Format %5d", fFormat));
-       }
+  // constructor
 }
 
 //______________________________________________________________________________
@@ -77,17 +69,10 @@ AliMultiEventInputHandler::AliMultiEventInputHandler(const char* name, const cha
     fIndex(0),
     fCurrentBin(0),
     fEventPool(0),
-    fEventBuffer(new AliVEvent*[size])
+    fEventBuffer(0)
 {
     // Constructor
-    for (Int_t i = 0; i < size; i++) 
-       if (fFormat == 1) {
-           fEventBuffer[i] = new AliAODEvent();
-       } else if (fFormat == 0) {
-           fEventBuffer[i] = new AliESDEvent();
-       } else{
-           AliWarning(Form("Unknown Format %5d", fFormat));
-       }
+
 }
 
 //______________________________________________________________________________
@@ -99,6 +84,20 @@ AliMultiEventInputHandler::~AliMultiEventInputHandler()
 Bool_t AliMultiEventInputHandler::Init(TTree* tree, Option_t* /*opt*/)
 {
     // Initialisation necessary for each new tree
+    if (!fEventBuffer) {
+       fEventBuffer = new AliVEvent*[fBufferSize];
+       
+       for (Int_t i = 0; i < fBufferSize; i++) 
+           if (fFormat == 1) {
+               fEventBuffer[i] = new AliAODEvent();
+           } else if (fFormat == 0) {
+               fEventBuffer[i] = new AliESDEvent();
+           } else{
+               AliWarning(Form("Unknown Format %5d", fFormat));
+           }
+    }
+    
+
     fTree = tree;
     if (!fTree) return kFALSE;
     for (Int_t i = 0; i < fBufferSize; i++) 
@@ -112,7 +111,19 @@ Bool_t AliMultiEventInputHandler::Init(TTree* tree, Option_t* /*opt*/)
 Bool_t AliMultiEventInputHandler::Notify(const char */*path*/)
 {
     // Connect to new tree
-    fEventBuffer[0]->ReadFromTree(fTree, "");
+
+       
+    static Bool_t first = kTRUE;
+    
+    
+    if (first) {
+       fEventBuffer[0]->ReadFromTree(fTree, "");
+       first = kFALSE;
+    } else {
+       fEventBuffer[0]->ReadFromTree(fTree, "reconnect");
+    }
+    
+    
     return (kTRUE);
 }