Example macro for the creation of tags (P.Christakoglou)

diff --git a/STEER/CreateTags.C b/STEER/CreateTags.C
new file mode 100644 (file)
index 0000000..fc82475
--- /dev/null
+++ b/STEER/CreateTags.C
@@ -0,0 +1,39 @@
+//_________________________________________________________________________
+// Macro to create the tag files from an ESD collection.
+// The tag files are stored according to the value set in the SetStorage method
+// Use Case : 
+//          SetStorage(0) --> store the tgs locally
+//          SetStorage(1) --> store the tgs in the grid
+//          else the program will abort!!!                                    
+//                                             
+// As a final step the user can create a single merged tag file.         
+//_________________________________________________________________________
+void CreateTags()
+{
+  TStopwatch timer;
+  timer.Start();
+
+  //connect to AliEn's API services
+  TGrid::Connect("alien://");
+
+  //create an AliTagCreator object
+  AliTagCreator *t = new AliTagCreator(); 
+  
+  //Query the file catalog and get a TGridResult
+  //TGridResult* result = gGrid->Query("/alice/cern.ch/user/p/peters/analysis/undcent1","*.root","","-l 150 -Opublicaccess=1");  
+  TGridResult* result = gGrid->Query("/alice/cern.ch/user/p/pchrista/PDC05/pp/*","AliESDs.root","",""); 
+  
+  //Store the tag files in AliEn's file catalog
+  t->SetStorage(1);
+  //Define the SE where the tag files will be stored
+  t->SetSE("ALICE::CERN::se01");
+  //Define the grid's path where the tag files will be stored
+  t->SetGridPath("PDC05/pp/Tags");
+  //Read the TGridResult, create the tags and store them
+  t->ReadESDCollection(result);
+  //Merge the tags and store the merged file
+  t->MergeTags();
+ 
+  timer.Stop();
+  timer.Print();
+}