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Reference Guide
TTreeFormulaManager.h
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1 // @(#)root/treeplayer:$Id$
2 // Author: Philippe Canal 20/03/02
3 
4 /*************************************************************************
5  * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers and al. *
6  * All rights reserved. *
7  * *
8  * For the licensing terms see $ROOTSYS/LICENSE. *
9  * For the list of contributors see $ROOTSYS/README/CREDITS. *
10  *************************************************************************/
11 
12 #ifndef ROOT_TTreeFormulaManager
13 #define ROOT_TTreeFormulaManager
14 
15 
16 //////////////////////////////////////////////////////////////////////////
17 // //
18 // TTreeFormulaManager //
19 // //
20 // A class coordinating several TTreeFormula objects. //
21 // //
22 //////////////////////////////////////////////////////////////////////////
23 
24 
25 #include "TObjArray.h"
26 
27 #include "TTreeFormula.h"
28 
29 class TArrayI;
30 
31 
32 class TTreeFormulaManager : public TObject {
33 private:
35  Int_t fMultiplicity; // Indicator of the variability of the formula
36  Bool_t fMultiVarDim; // True if one of the variable has 2 variable size dimensions.
37  Int_t fNdata; //! Last value calculated by GetNdata
38 
39  //the next line should be: mutable Int_t fCumulUsedSizes[kMAXFORMDIM+1]; See GetNdata()
40  Int_t fCumulUsedSizes[kMAXFORMDIM+1]; //Accumulated size of lower dimensions as seen for this entry
41  TArrayI *fCumulUsedVarDims; //fCumulUsedSizes(1) for multi variable dimensions case
42  //the next line should be: mutable Int_t fUsedSizes[kMAXFORMDIM+1]; See GetNdata()
43  Int_t fUsedSizes[kMAXFORMDIM+1]; //Actual size of the dimensions as seen for this entry.
44  TArrayI *fVarDims[kMAXFORMDIM+1]; //List of variable sizes dimensions.
45  Int_t fVirtUsedSizes[kMAXFORMDIM+1]; //Virtual size of lower dimensions as seen for this formula
46 
47  Bool_t fNeedSync; // Indicate whether a new formula has been added since the last synchronization
48 
49  friend class TTreeFormula;
50 
51 private:
52  // Not implemented yet
55 
56 #if !defined(_MSC_VER) || (_MSC_VER < 1300) || defined(__CINT__)
57  // Deletion is the sole responsability of the TTreeFormulas
59 #endif
60 
61 protected:
62 
63  virtual void AddVarDims(Int_t virt_dim);
64  virtual void CancelDimension(Int_t virt_dim);
65  virtual void EnableMultiVarDims();
66  virtual void UpdateUsedSize(Int_t &virt_dim, Int_t vsize);
67 
68 public:
70 #if _MSC_VER >= 1300
71  // cannot be private due to a bug in VC++7
73 #endif
74 
75  virtual void Add(TTreeFormula*);
76  virtual Int_t GetMultiplicity() const {return fMultiplicity;}
77  virtual Int_t GetNdata(Bool_t forceLoadDim = kFALSE);
78  virtual Bool_t Notify() { UpdateFormulaLeaves(); return kTRUE; }
79  virtual void Remove(TTreeFormula*);
80  virtual Bool_t Sync();
81  virtual void UpdateFormulaLeaves();
82 
83  ClassDef(TTreeFormulaManager,0) // A class coordinating several TTreeFormula objects.
84 };
85 
86 
87 #endif // ROOT_TTreeFormulaManager
88 
Int_t fCumulUsedSizes[kMAXFORMDIM+1]
Last value calculated by GetNdata.
const Int_t kMAXFORMDIM
Definition: TTreeFormula.h:43
An array of TObjects.
Definition: TObjArray.h:37
virtual void Remove(TTreeFormula *)
Remove a formula from this manager.
virtual Bool_t Sync()
Synchronize all the formulae.
virtual void EnableMultiVarDims()
Set the manager as handling a formula with multiple variable dimensions.
TArrayI * fVarDims[kMAXFORMDIM+1]
int Int_t
Definition: RtypesCore.h:41
bool Bool_t
Definition: RtypesCore.h:59
virtual void UpdateFormulaLeaves()
This function could be called TTreePlayer::UpdateFormulaLeaves, itself called by TChain::LoadTree whe...
virtual void Add(TTreeFormula *)
Add a new formula to the list of formulas managed The manager of the formula will be changed and the ...
Array of integers (32 bits per element).
Definition: TArrayI.h:27
Int_t fVirtUsedSizes[kMAXFORMDIM+1]
virtual void CancelDimension(Int_t virt_dim)
Cancel a dimension.
Used to coordinate one or more TTreeFormula objects.
#define ClassDef(name, id)
Definition: Rtypes.h:297
~TTreeFormulaManager()
Tree FormulaManager default destructor.
Used to pass a selection expression to the Tree drawing routine.
Definition: TTreeFormula.h:58
virtual Bool_t Notify()
This method must be overridden to handle object notification.
TTreeFormulaManager & operator=(const TTreeFormulaManager &)
virtual void AddVarDims(Int_t virt_dim)
Add a variable dimension.
const Bool_t kFALSE
Definition: RtypesCore.h:92
Int_t fUsedSizes[kMAXFORMDIM+1]
Mother of all ROOT objects.
Definition: TObject.h:37
virtual Int_t GetNdata(Bool_t forceLoadDim=kFALSE)
Return number of available instances in the formulas.
const Bool_t kTRUE
Definition: RtypesCore.h:91
virtual Int_t GetMultiplicity() const
virtual void UpdateUsedSize(Int_t &virt_dim, Int_t vsize)
Reload the array sizes.
TTreeFormulaManager()
Tree FormulaManger default constructor.