From 68f62aaad6ed2e76f92435da058eb172f0ecbfbe Mon Sep 17 00:00:00 2001
From: richterm <richterm@f7af4fe6-9843-0410-8265-dc069ae4e863>
Date: Thu, 6 Dec 2007 15:18:06 +0000
Subject: [PATCH] avoid memory resident TTree, TPCEsdConverter added to example
 macros

---
 HLT/TPCLib/AliHLTTPCEsdWriterComponent.cxx | 12 ++----------
 HLT/TPCLib/macros/conf-tpc-esd.C           | 14 ++++++++++++--
 HLT/TPCLib/macros/sim-hlt-tpc.C            |  2 +-
 3 files changed, 15 insertions(+), 13 deletions(-)

diff --git a/HLT/TPCLib/AliHLTTPCEsdWriterComponent.cxx b/HLT/TPCLib/AliHLTTPCEsdWriterComponent.cxx
index 451b576b6fc..897da120eee 100644
--- a/HLT/TPCLib/AliHLTTPCEsdWriterComponent.cxx
+++ b/HLT/TPCLib/AliHLTTPCEsdWriterComponent.cxx
@@ -91,13 +91,9 @@ int AliHLTTPCEsdWriterComponent::AliWriter::InitWriter()
   fESD = new AliESDEvent;
   if (fESD) {
     fESD->CreateStdContent();
-    // we have to open a TFile in order to avoid warnings related to
-    // memory resident TTree's. Bad Root feature, yes ;-(
-    // Unfortunatly, opening a dummy file leads to the file to be
-    // created.
-    //TFile dummy("/tmp/dummy-to-avoid-ttree-warnigs", "CRAETE");
     fTree = new TTree("esdTree", "Tree with HLT ESD objects");
     if (fTree) {
+      fTree->SetDirectory(0);
       fESD->WriteToTree(fTree);
     }
   }
@@ -327,11 +323,6 @@ int AliHLTTPCEsdWriterComponent::AliConverter::DoEvent(const AliHLTComponentEven
   // see header file for class documentation
   int iResult=0;
   assert(fBase);
-  // we have to open a TFile in order to avoid warnings related to
-  // memory resident TTree's. Bad Root feature, yes ;-(
-  // Unfortunatly, opening a dummy file leads to the file to be
-  // created.
-  //TFile dummy("/tmp/dummy-to-avoid-ttree-warnigs", "RECREATE");
   AliESDEvent* pESD = new AliESDEvent;
   if (pESD && fBase) {
     pESD->CreateStdContent();
@@ -342,6 +333,7 @@ int AliHLTTPCEsdWriterComponent::AliConverter::DoEvent(const AliHLTComponentEven
     if (fWriteTree)
       pTree = new TTree("esdTree", "Tree with HLT ESD objects");
     if (pTree) {
+      pTree->SetDirectory(0);
       pESD->WriteToTree(pTree);
     }
 
diff --git a/HLT/TPCLib/macros/conf-tpc-esd.C b/HLT/TPCLib/macros/conf-tpc-esd.C
index 9cc431df444..e4f57fc677c 100644
--- a/HLT/TPCLib/macros/conf-tpc-esd.C
+++ b/HLT/TPCLib/macros/conf-tpc-esd.C
@@ -39,6 +39,16 @@
     writerInput+=tracker;
   }
 
-  // the esd writer configuration
-  AliHLTConfiguration esdwconf("esd-writer", "TPCEsdWriter"   , writerInput.Data(), "-datafile AliHLTESDs.root");
+  bool esdFile=true;
+
+  if (esdFile) {
+    // the esd writer configuration
+    AliHLTConfiguration sink("sink1", "TPCEsdWriter"   , writerInput.Data(), "-datafile AliHLTESDs.root");
+  } else {
+    // the esd writer configuration
+    AliHLTConfiguration esdcconf("esd-converter", "TPCEsdConverter"   , writerInput.Data(), "-tree");
+    
+    // the esd writer configuration
+    AliHLTConfiguration sink("sink1", "ROOTFileWriter"   , "esd-converter", "-datafile AliHLTESDs.root");
+  }
 }
diff --git a/HLT/TPCLib/macros/sim-hlt-tpc.C b/HLT/TPCLib/macros/sim-hlt-tpc.C
index d7c966a9292..ecfd711e673 100644
--- a/HLT/TPCLib/macros/sim-hlt-tpc.C
+++ b/HLT/TPCLib/macros/sim-hlt-tpc.C
@@ -27,6 +27,6 @@
 
   // set the options for the HLT simulation
   //sim.SetRunHLT("libAliHLTTPC.so loglevel=0x3c config=conf-tpc-writer.C chains=sink1");
-  sim.SetRunHLT("libAliHLTTPC.so loglevel=0x3c config=conf-tpc-esd.C chains=esd-writer");
+  sim.SetRunHLT("libAliHLTTPC.so loglevel=0x3c config=conf-tpc-esd.C chains=sink1");
   sim.Run();
 }
-- 
2.39.3