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TChainIndex.h
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1// @(#)root/treeplayer:$Id$
2// Author: Marek Biskup 07/06/2005
3
4/*************************************************************************
5 * Copyright (C) 1995-2004, Rene Brun and Fons Rademakers. *
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_TChainIndex
13#define ROOT_TChainIndex
14
15
16//////////////////////////////////////////////////////////////////////////
17//
18// TChainIndex
19//
20// A Chain Index with majorname and minorname.
21// It uses tree indices of all the trees in the chain instead of building
22// a new index.
23// The index values from the first tree should be less then
24// all the index values from the second tree, and so on.
25// If a tree in the chain doesn't have an index the index will be created
26// and kept inside this chain index.
27//
28//////////////////////////////////////////////////////////////////////////
29
30
31#include "TVirtualIndex.h"
32
33#include <vector>
34#include <utility>
35
36class TTreeFormula;
37class TTreeIndex;
38class TChain;
39
40class TChainIndex : public TVirtualIndex {
41
42public:
44 // holds a description of indices of trees in the chain.
45 public:
48 fTreeIndex(nullptr) {}
49
50 typedef std::pair<Long64_t, Long64_t> IndexValPair_t;
51
54 void SetMinMaxFrom(const TTreeIndex *index );
55
56 Long64_t fMinIndexValue; // the minimum value of the index (upper bits)
57 Long64_t fMinIndexValMinor; // the minimum value of the index (lower bits)
58 Long64_t fMaxIndexValue; // the maximum value of the index (upper bits)
59 Long64_t fMaxIndexValMinor; // the maximum value of the index (lower bits)
60 TVirtualIndex* fTreeIndex; // the tree index in case it was created in the constructor,
61 // otherwise 0
62 };
63protected:
64
65 TString fMajorName; // Index major name
66 TString fMinorName; // Index minor name
67 TTreeFormula *fMajorFormulaParent; //! Pointer to major TreeFormula in Parent tree (if any)
68 TTreeFormula *fMinorFormulaParent; //! Pointer to minor TreeFormula in Parent tree (if any)
69 std::vector<TChainIndexEntry> fEntries; // descriptions of indices of trees in the chain.
70
71 std::pair<TVirtualIndex*, Int_t> GetSubTreeIndex(Long64_t major, Long64_t minor) const;
72 void ReleaseSubTreeIndex(TVirtualIndex* index, Int_t treeNo) const;
73 void DeleteIndices();
74
77
78public:
80 TChainIndex(const TTree *T, const char *majorname, const char *minorname);
81 ~TChainIndex() override;
82 void Append(const TVirtualIndex *, Bool_t delaySort = kFALSE) override;
83 Long64_t GetEntryNumberFriend(const TTree *parent) override;
84 Long64_t GetEntryNumberWithIndex(Long64_t major, Long64_t minor) const override;
85 Long64_t GetEntryNumberWithBestIndex(Long64_t major, Long64_t minor) const override;
86 const char *GetMajorName() const override {return fMajorName.Data();}
87 const char *GetMinorName() const override {return fMinorName.Data();}
88 Long64_t GetN() const override {return fEntries.size();}
89 Bool_t IsValidFor(const TTree *parent) override;
90 void UpdateFormulaLeaves(const TTree *parent) override;
91 void SetTree(TTree *T) override;
92
93 ClassDefOverride(TChainIndex,1) //A Tree Index with majorname and minorname.
94};
95
96#endif
97
bool Bool_t
Definition RtypesCore.h:63
constexpr Bool_t kFALSE
Definition RtypesCore.h:101
long long Long64_t
Definition RtypesCore.h:80
#define ClassDefOverride(name, id)
Definition Rtypes.h:341
Option_t Option_t TPoint TPoint const char GetTextMagnitude GetFillStyle GetLineColor GetLineWidth GetMarkerStyle GetTextAlign GetTextColor GetTextSize void char Point_t Rectangle_t WindowAttributes_t index
Holds a description of indices of trees in the chain.
Definition TChainIndex.h:43
std::pair< Long64_t, Long64_t > IndexValPair_t
Definition TChainIndex.h:50
IndexValPair_t GetMaxIndexValPair() const
Definition TChainIndex.h:53
void SetMinMaxFrom(const TTreeIndex *index)
IndexValPair_t GetMinIndexValPair() const
Definition TChainIndex.h:52
A Chain Index.
Definition TChainIndex.h:40
std::vector< TChainIndexEntry > fEntries
Pointer to minor TreeFormula in Parent tree (if any)
Definition TChainIndex.h:69
const char * GetMinorName() const override
Definition TChainIndex.h:87
TTreeFormula * fMinorFormulaParent
Pointer to major TreeFormula in Parent tree (if any)
Definition TChainIndex.h:68
void Append(const TVirtualIndex *, Bool_t delaySort=kFALSE) override
Add an index to this chain.
~TChainIndex() override
The destructor.
TString fMinorName
Definition TChainIndex.h:66
const char * GetMajorName() const override
Definition TChainIndex.h:86
std::pair< TVirtualIndex *, Int_t > GetSubTreeIndex(Long64_t major, Long64_t minor) const
Returns a TVirtualIndex for a tree which holds the entry with the specified major and minor values an...
Long64_t GetEntryNumberWithIndex(Long64_t major, Long64_t minor) const override
Returns the entry number with given index values.
void ReleaseSubTreeIndex(TVirtualIndex *index, Int_t treeNo) const
Releases the tree index got using GetSubTreeIndex.
Long64_t GetN() const override
Definition TChainIndex.h:88
Long64_t GetEntryNumberWithBestIndex(Long64_t major, Long64_t minor) const override
See TTreeIndex::GetEntryNumberWithBestIndex for details.
void UpdateFormulaLeaves(const TTree *parent) override
Updates the parent formulae.
TChainIndex()
Default constructor for TChainIndex.
void DeleteIndices()
Delete all the indices which were built by this object.
TString fMajorName
Definition TChainIndex.h:65
TTreeFormula * fMajorFormulaParent
Definition TChainIndex.h:67
Long64_t GetEntryNumberFriend(const TTree *parent) override
See TTreeIndex::GetEntryNumberFriend for description.
TTreeFormula * GetMajorFormulaParent(const TTree *parent)
Return a pointer to the TreeFormula corresponding to the majorname in parent tree T.
Bool_t IsValidFor(const TTree *parent) override
Return kTRUE if index can be applied to the TTree.
void SetTree(TTree *T) override
See TTreeIndex::SetTree.
TTreeFormula * GetMinorFormulaParent(const TTree *parent)
Return a pointer to the TreeFormula corresponding to the minorname in parent tree T.
A chain is a collection of files containing TTree objects.
Definition TChain.h:33
Basic string class.
Definition TString.h:139
const char * Data() const
Definition TString.h:380
Used to pass a selection expression to the Tree drawing routine.
A Tree Index with majorname and minorname.
Definition TTreeIndex.h:29
A TTree represents a columnar dataset.
Definition TTree.h:79
Abstract interface for Tree Index.