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)

using namespace std;
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";

  cout<<"OUTPUT ROOTFILE: "<<fileName<<endl;
  TString treeTitle("pamtest");
  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	using namespace std;
12	PamRootManager* PamRootManager::fgInstance = 0;
13
14	PamRootManager::PamRootManager(const char* projectName, FileMode fileMode)
15	: TObject()
16	{
17	if (fgInstance) {
18	Fatal("PamRootManager", "Singleton instance already exists.");
19	return;
20	}
21
22
23	TString fileName = TString(gSystem->Getenv("PWD"))+"/"+projectName;
24	fileName += ".root";
25
26	cout<<"OUTPUT ROOTFILE: "<<fileName<<endl;
27	TString treeTitle("pamtest");
28	treeTitle += " tree";
29
30	TTree::SetMaxTreeSize(1000*Long64_t(2000000000));
31
32	switch (fileMode) {
33	case kRead:
34	fFile = new TFile(fileName);
35	fTree = (TTree*) fFile->Get(projectName);
36	break;
37
38	case kWrite:
39	fFile = new TFile(fileName, "recreate");
40	fTree = new TTree(projectName, treeTitle);
41	;;
42	}
43
44
45	fgInstance = this;
46	}
47
48	PamRootManager::PamRootManager()
49	: TObject(),
50	fFile(0),
51	fTree(0)
52	{
53
54	if (fgInstance) {
55	Fatal("PamRootManager", "Singleton instance already exists.");
56	return;
57	}
58
59	fgInstance = this;
60	}
61
62	PamRootManager::~PamRootManager()
63	{
64	fFile->cd();
65	delete fFile;
66	//delete fDirectory;
67	fgInstance = 0;
68	}
69
70	PamRootManager* PamRootManager::Instance()
71	{
72	// Returns singleton instance.
73
74	return fgInstance;
75	}
76
77	void PamRootManager::Register(const char* name, const char* className,
78	void* objAddress)
79	{
80	// Creates a branch of the given name and associates it with
81	// the given address.
82
83	if (!fTree->GetBranch(name))
84	fTree->Branch(name, className, objAddress, 32000, 99);
85	else
86	fTree->GetBranch(name)->SetAddress(objAddress);
87	}
88
89	void PamRootManager::Fill()
90	{
91	// Fills the tree.
92	//TString tmp = gDirectory->GetName();
93	fFile->cd();
94	fTree->Fill();
95	//gDirectory->cd(tmp);
96	}
97
98	void PamRootManager:: WriteAll()
99	{
100	// Erites the tree in the file.
101
102	//TString tmp = gDirectory->GetName();
103	fFile->cd();
104	std::cout<<"TREE NAME: "<<fTree->GetName()<<std::endl;
105	std::cout<<"DIR NAME: "<<gDirectory->GetName()<<std::endl;
106	fTree->Write();
107	//gDirectory->cd(tmp);
108	std::cout<<"TREE WRITTEN "<<fTree->GetName()<<std::endl;
109	}
110
111	void PamRootManager::ReadEvent(Int_t i)
112	{
113	// Reads the event data for i-th event for all connected branches.
114
115	fTree->GetEntry(i);
116	}