pamVMC/src/PamRootManager.cxx

#include "PamRootManager.h"
#include <TSystem.h>
#include <TParticle.h>
#include <TObjArray.h>
#include <iostream>

#include <TList.h>
#include <TROOT.h>
ClassImp(PamRootManager)

PamRootManager* PamRootManager::fgInstance = 0;

PamRootManager::PamRootManager(const char* projectName, FileMode fileMode)
  : TObject()
{
  if (fgInstance) {
    Fatal("PamRootManager", "Singleton instance already exists.");
    return;
  }  

  
  TString fileName = TString(gSystem->Getenv("PWD"))+"/"+projectName;
  fileName += ".root";


  TString treeTitle(projectName);
  treeTitle += " tree";

  TTree::SetMaxTreeSize(1000*Long64_t(2000000000));

  switch (fileMode) {
    case kRead:
      fFile = new TFile(fileName);
      fTree = (TTree*) fFile->Get(projectName);
      break;
      
    case kWrite:  
      fFile = new TFile(fileName, "recreate");
      fTree = new TTree(projectName, treeTitle);
      ;;  
  }

 
  fgInstance = this;
}

PamRootManager::PamRootManager()
  : TObject(),
    fFile(0),
    fTree(0) 
{

  if (fgInstance) {
    Fatal("PamRootManager", "Singleton instance already exists.");
    return;
  }  

  fgInstance = this;
}

PamRootManager::~PamRootManager() 
{
  fFile->cd();
  delete fFile;
  delete fDirectory;
  fgInstance = 0;
}

PamRootManager* PamRootManager::Instance()
{
// Returns singleton instance.

  return fgInstance;
}  

void  PamRootManager::Register(const char* name, const char* className, 
                                void* objAddress)
{
// Creates a branch of the given name and associates it with
// the given address.

  if (!fTree->GetBranch(name)) 
    fTree->Branch(name, className, objAddress, 32000, 99);
  else  
    fTree->GetBranch(name)->SetAddress(objAddress);
}

void  PamRootManager::Fill()
{
// Fills the tree.
  //TString tmp = gDirectory->GetName();
  fFile->cd();
  fTree->Fill();
  //gDirectory->cd(tmp);
}  

void PamRootManager:: WriteAll()
{
// Erites the tree in the file.

  //TString tmp = gDirectory->GetName();  
  fFile->cd();
  std::cout<<"TREE NAME: "<<fTree->GetName()<<std::endl;
  std::cout<<"DIR NAME: "<<gDirectory->GetName()<<std::endl;
  fTree->Write();
  //gDirectory->cd(tmp);
  std::cout<<"TREE WRITTEN "<<fTree->GetName()<<std::endl;
}  

void  PamRootManager::ReadEvent(Int_t i)
{
// Reads the event data for i-th event for all connected branches.

  fTree->GetEntry(i);
}
1	pamelats	1.1	#include "PamRootManager.h"
2			#include <TSystem.h>
3			#include <TParticle.h>
4			#include <TObjArray.h>
5			#include <iostream>
6
7			#include <TList.h>
8			#include <TROOT.h>
9			ClassImp(PamRootManager)
10
11			PamRootManager* PamRootManager::fgInstance = 0;
12
13			PamRootManager::PamRootManager(const char* projectName, FileMode fileMode)
14			: TObject()
15			{
16			if (fgInstance) {
17			Fatal("PamRootManager", "Singleton instance already exists.");
18			return;
19			}
20
21
22			TString fileName = TString(gSystem->Getenv("PWD"))+"/"+projectName;
23			fileName += ".root";
24
25
26			TString treeTitle(projectName);
27			treeTitle += " tree";
28
29			TTree::SetMaxTreeSize(1000*Long64_t(2000000000));
30
31			switch (fileMode) {
32			case kRead:
33			fFile = new TFile(fileName);
34			fTree = (TTree*) fFile->Get(projectName);
35			break;
36
37			case kWrite:
38			fFile = new TFile(fileName, "recreate");
39			fTree = new TTree(projectName, treeTitle);
40			;;
41			}
42
43
44			fgInstance = this;
45			}
46
47			PamRootManager::PamRootManager()
48			: TObject(),
49			fFile(0),
50			fTree(0)
51			{
52
53			if (fgInstance) {
54			Fatal("PamRootManager", "Singleton instance already exists.");
55			return;
56			}
57
58			fgInstance = this;
59			}
60
61			PamRootManager::~PamRootManager()
62			{
63			fFile->cd();
64			delete fFile;
65			delete fDirectory;
66			fgInstance = 0;
67			}
68
69			PamRootManager* PamRootManager::Instance()
70			{
71			// Returns singleton instance.
72
73			return fgInstance;
74			}
75
76			void PamRootManager::Register(const char* name, const char* className,
77			void* objAddress)
78			{
79			// Creates a branch of the given name and associates it with
80			// the given address.
81
82			if (!fTree->GetBranch(name))
83			fTree->Branch(name, className, objAddress, 32000, 99);
84			else
85			fTree->GetBranch(name)->SetAddress(objAddress);
86			}
87
88			void PamRootManager::Fill()
89			{
90			// Fills the tree.
91			//TString tmp = gDirectory->GetName();
92			fFile->cd();
93			fTree->Fill();
94			//gDirectory->cd(tmp);
95			}
96
97			void PamRootManager:: WriteAll()
98			{
99			// Erites the tree in the file.
100
101			//TString tmp = gDirectory->GetName();
102			fFile->cd();
103			std::cout<<"TREE NAME: "<<fTree->GetName()<<std::endl;
104			std::cout<<"DIR NAME: "<<gDirectory->GetName()<<std::endl;
105			fTree->Write();
106			//gDirectory->cd(tmp);
107			std::cout<<"TREE WRITTEN "<<fTree->GetName()<<std::endl;
108			}
109
110			void PamRootManager::ReadEvent(Int_t i)
111			{
112			// Reads the event data for i-th event for all connected branches.
113
114			fTree->GetEntry(i);
115			}