| [d7d2da3] | 1 |
|
|---|
| 2 | /** \class ExRootTreeBranch
|
|---|
| 3 | *
|
|---|
| 4 | * Class handling object creation
|
|---|
| 5 | * It is also used for output ROOT tree branches
|
|---|
| 6 | *
|
|---|
| 7 | * $Date: 2008-06-04 13:57:56 $
|
|---|
| 8 | * $Revision: 1.1 $
|
|---|
| 9 | *
|
|---|
| 10 | *
|
|---|
| 11 | * \author P. Demin - UCL, Louvain-la-Neuve
|
|---|
| 12 | *
|
|---|
| 13 | */
|
|---|
| 14 |
|
|---|
| 15 | #include "ExRootAnalysis/ExRootTreeBranch.h"
|
|---|
| 16 |
|
|---|
| 17 | #include "TFile.h"
|
|---|
| 18 | #include "TTree.h"
|
|---|
| 19 | #include "TString.h"
|
|---|
| 20 | #include "TClonesArray.h"
|
|---|
| 21 |
|
|---|
| 22 | #include <iostream>
|
|---|
| 23 | #include <stdexcept>
|
|---|
| 24 | #include <sstream>
|
|---|
| 25 |
|
|---|
| 26 | using namespace std;
|
|---|
| 27 |
|
|---|
| 28 | //------------------------------------------------------------------------------
|
|---|
| 29 |
|
|---|
| 30 | ExRootTreeBranch::ExRootTreeBranch(const char *name, TClass *cl, TTree *tree) :
|
|---|
| 31 | fSize(0), fCapacity(1), fData(0)
|
|---|
| 32 | {
|
|---|
| 33 | stringstream message;
|
|---|
| 34 | // cl->IgnoreTObjectStreamer();
|
|---|
| 35 | // cl->BypassStreamer();
|
|---|
| 36 | fData = new TClonesArray(cl, fCapacity);
|
|---|
| 37 |
|
|---|
| 38 | if(fData)
|
|---|
| 39 | {
|
|---|
| 40 | fData->SetName(name);
|
|---|
| 41 | fData->ExpandCreateFast(fCapacity);
|
|---|
| 42 | fData->Clear();
|
|---|
| 43 | if(tree)
|
|---|
| 44 | {
|
|---|
| 45 | tree->Branch(name, &fData, 64000);
|
|---|
| 46 | tree->Branch(TString(name) + "_size", &fSize, TString(name) + "_size/I");
|
|---|
| 47 | }
|
|---|
| 48 | }
|
|---|
| 49 | else
|
|---|
| 50 | {
|
|---|
| 51 | message << "can't create TClonesArray for branch '" << name << "'";
|
|---|
| 52 | throw runtime_error(message.str());
|
|---|
| 53 | }
|
|---|
| 54 | }
|
|---|
| 55 |
|
|---|
| 56 | //------------------------------------------------------------------------------
|
|---|
| 57 |
|
|---|
| 58 | ExRootTreeBranch::~ExRootTreeBranch()
|
|---|
| 59 | {
|
|---|
| 60 | if(fData) delete fData;
|
|---|
| 61 | }
|
|---|
| 62 |
|
|---|
| 63 | //------------------------------------------------------------------------------
|
|---|
| 64 |
|
|---|
| 65 | TObject *ExRootTreeBranch::NewEntry()
|
|---|
| 66 | {
|
|---|
| 67 | if(!fData) return 0;
|
|---|
| 68 |
|
|---|
| 69 | if(fSize >= fCapacity)
|
|---|
| 70 | {
|
|---|
| 71 | if(fCapacity < 10) fCapacity = 10;
|
|---|
| 72 | else if(fCapacity < 30) fCapacity = 30;
|
|---|
| 73 | else if(fCapacity < 100) fCapacity = 100;
|
|---|
| 74 | else if(fCapacity < 250) fCapacity = 250;
|
|---|
| 75 | else fCapacity *= 2;
|
|---|
| 76 |
|
|---|
| 77 | fData->ExpandCreateFast(fCapacity);
|
|---|
| 78 |
|
|---|
| 79 | fData->Clear();
|
|---|
| 80 | fData->ExpandCreateFast(fSize);
|
|---|
| 81 | }
|
|---|
| 82 |
|
|---|
| 83 | return fData->AddrAt(fSize++);
|
|---|
| 84 | }
|
|---|
| 85 |
|
|---|
| 86 | //------------------------------------------------------------------------------
|
|---|
| 87 |
|
|---|
| 88 | void ExRootTreeBranch::Clear()
|
|---|
| 89 | {
|
|---|
| 90 | fSize = 0;
|
|---|
| 91 | if(fData) fData->Clear();
|
|---|
| 92 | }
|
|---|
| 93 |
|
|---|
| 94 | //------------------------------------------------------------------------------
|
|---|
| 95 |
|
|---|
