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	#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	}