Splitting loader class to have proper debug messages

[u/mrichter/AliRoot.git] / STEER / AliBaseLoader.h

diff --git a/STEER/AliBaseLoader.h b/STEER/AliBaseLoader.h
new file mode 100644 (file)
index 0000000..929829c
--- /dev/null
+++ b/STEER/AliBaseLoader.h
@@ -0,0 +1,89 @@
+#ifndef ALIBASELOADER_H
+#define ALIBASELOADER_H
+/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * See cxx source for full Copyright notice                               */
+
+/* $Id$ */
+
+//__________________________________________
+////////////////////////////////////////////
+//                                        //
+//  class AliBaseLoader                   //
+//                                        //
+//  Loader responsible for one data type  //
+//  i.e. Hits, Kine, etc.                 //
+//  many objects type can be assciated    //
+//  with one data type: storing object    //
+//  (usually tree), task producing it,    //
+//  Quality Assurance(QA), QA Task, and   //
+//  others.                               //
+//                                        //
+//                                        //
+////////////////////////////////////////////
+
+#include <TDirectory.h>
+#include <TNamed.h>
+#include <TString.h>
+#include <TTask.h>
+#include <TTree.h>
+class TFile;
+class TFolder;
+
+class AliLoader;
+class AliDataLoader;
+class AliObjectLoader;
+class AliRunLoader;
+class AliTaskLoader;
+class AliTreeLoader;
+
+class AliBaseLoader: public TNamed
+{
+  public:
+    AliBaseLoader();
+    AliBaseLoader(const TString& name, AliDataLoader* dl, Bool_t storeontop = kFALSE);
+    AliBaseLoader(const AliBaseLoader& source);
+    AliBaseLoader& operator=(const AliBaseLoader& source);
+    
+    virtual ~AliBaseLoader(){};
+     
+    virtual Int_t      Load(Option_t* opt="");
+    virtual void       Unload();
+    virtual Int_t      Reload();
+    virtual Int_t      WriteData(Option_t* opt="");
+    virtual void       Clean();
+    virtual Int_t      Post();//Takes from file and sends to proper TFolder (Data Folder)
+    virtual Int_t      Post(TObject* data);//Sends to proper TFolder (Data Folder)
+    virtual TObject*   Get() const = 0; 
+    Bool_t             IsLoaded()const{return fIsLoaded;}
+    void               SetDataLoader(AliDataLoader* dl){fDataLoader = dl;}
+    void               SetEventFolder(TFolder* /*ef*/){;}
+    void               SetDoNotReload(Bool_t flag){fDoNotReload = flag;}
+    Bool_t             DoNotReload() const {return fDoNotReload;}
+    TDirectory*        GetDirectory() const;//returns pointer to directory where data are stored. 
+    TObject*           GetFromDirectory(const char *name) const
+      {return (GetDirectory())?GetDirectory()->Get(name):0x0;}    
+   protected:
+    
+    virtual Int_t      AddToBoard(TObject* obj) = 0;//add to white board - board can be TTask or TFolder
+    virtual void       RemoveFromBoard(TObject* obj) = 0;
+    
+    AliDataLoader*     GetDataLoader() const;
+
+    Bool_t             fIsLoaded;    //!  flag indicating if data are loaded
+    Bool_t             fStoreInTopOfFile;// if true, data are stored in top of file ->Indicates fDoNotReload == kTRUE
+
+   private:
+    Bool_t             fDoNotReload; // if this flag is on object is not reloaded while GetEvent is called.
+                                     //Specially important for tasks. Task loops over events while producing data, 
+                        //and has a base loader which writes it to file every processed event.
+                        //If this flag is not on, while taking next event, loader deletes task
+                        // and tries to get new one from file
+    AliDataLoader*     fDataLoader;  //! pointer to Data Loader this Base Loader belongs to
+
+ ClassDef(AliBaseLoader,1)    
+};
+
+
+#endif
+
+