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RooDirItem.cxx
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1 /*****************************************************************************
2  * Project: RooFit *
3  * Package: RooFitCore *
4  * @(#)root/roofitcore:$Id$
5  * Authors: *
6  * WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu *
7  * DK, David Kirkby, UC Irvine, dkirkby@uci.edu *
8  * *
9  * Copyright (c) 2000-2005, Regents of the University of California *
10  * and Stanford University. All rights reserved. *
11  * *
12  * Redistribution and use in source and binary forms, *
13  * with or without modification, are permitted according to the terms *
14  * listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
15  *****************************************************************************/
16 
17 /**
18 \file RooDirItem.cxx
19 \class RooDirItem
20 \ingroup Roofitcore
21 
22 RooDirItem is a utility base class for RooFit objects that are to be attached
23 to ROOT directories. Concrete classes inherit the appendToDir and removeToDir
24 methods that can be used to safely attach and detach one self from a TDirectory
25 **/
26 
27 #include "RooFit.h"
28 
29 #include <iostream>
30 #include "TList.h"
31 #include "TDirectoryFile.h"
32 #include "TString.h"
33 #include "RooDirItem.h"
34 
35 using namespace std;
36 
38 
39 
40 ////////////////////////////////////////////////////////////////////////////////
41 /// Remove object from directory it was added to
42 
44 {
45  if (_dir) {
46  _dir->GetList()->Remove(obj) ;
47  }
48 }
49 
50 
51 
52 ////////////////////////////////////////////////////////////////////////////////
53 /// Append object to directory. If forceMemoryResident is
54 /// true, nothing happens.
55 void RooDirItem::appendToDir(TObject* obj, Bool_t forceMemoryResident)
56 {
57  if (forceMemoryResident) {
58  // If we are not going into a file, appending to a directory
59  // doesn't make sense. It only creates global state and congestion.
60  return;
61  } else {
62  // Append self to present gDirectory
63  _dir = gDirectory ;
64  gDirectory->Append(obj) ;
65  }
66 }
67 
RooDirItem::removeFromDir
void removeFromDir(TObject *obj)
Remove object from directory it was added to.
Definition: RooDirItem.cxx:43
RooFit.h
ClassImp
#define ClassImp(name)
Definition: Rtypes.h:364
RooDirItem
Definition: RooDirItem.h:22
TList.h
TString.h
bool
gDirectory
#define gDirectory
Definition: TDirectory.h:236
RooDirItem.h
TDirectoryFile.h
RooDirItem::appendToDir
void appendToDir(TObject *obj, Bool_t forceMemoryResident=kFALSE)
Append object to directory.
Definition: RooDirItem.cxx:55
TObject
Definition: TObject.h:37