DataUtil/src/TreeWriter.cc

// $Id: TreeWriter.cc,v 1.6 2008/06/24 14:05:03 loizides Exp $

#include "MitAna/DataUtil/interface/TreeWriter.h"

#include <Riostream.h>
#include <TObject.h>
#include <TSystem.h>
#include <TProcessID.h>

#include "MitAna/DataUtil/interface/Debug.h"

using namespace mithep;

ClassImp(mithep::TreeWriter)

//__________________________________________________________________________________________________
TreeWriter::TreeWriter(const char *tname, Bool_t doreset) : 
  TNamed(tname,Form("%s written by mithep::TreeWriter", tname)),
  fBaseURL("."), 
  fPrefix("mithep"), 
  fFileNumber(0),
  fCompressLevel(9),
  fDefBrSize(64*1024),
  fDefSL(99),
  fMaxSize((Long64_t)(0.99 * TTree::GetMaxTreeSize())),
  fkMinFreeSpace(1024*1024), 
  fkMinAvgSize(10*1024), 
  fEvtObjNum(-1), 
  fIsInit(kFALSE), 
  fDoObjNumReset(doreset), 
  fFile(0), 
  fTrees(0)
{
  // Constructor.

  fTrees.SetOwner();
}

//__________________________________________________________________________________________________
TreeWriter::~TreeWriter()
{
  // Destructor.
   
  if (fIsInit) {
    CloseFile();
  }

  TDirectory::TContext context(0); 
  fTrees.Clear();
}

//__________________________________________________________________________________________________
void TreeWriter::AddBranch(const char *name, const char *cname, 
                           void *obj, Int_t bsize, Int_t level)
{
  // Add branch with name "name" into tree with name "tname" and set its address 
  // to object pointer for class name "cname" using a given buffer size and splitlevel.

  MyTree  *t = AddOrGetMyTree(GetName());
  TBranch *b = t->Bronch(name, cname, obj, bsize, level);
  b->SetCompressionLevel(GetCompressLevel());
}


//__________________________________________________________________________________________________
void TreeWriter::AddBranch(const char *name, void *obj, Int_t bsize, Int_t level)
{
  // Add branch with name "name" into tree with name "tname" and set its address 
  // to object pointer using a given buffer size and splitlevel.

  AddBranch(name, CName(obj), obj, bsize, level);
}

//__________________________________________________________________________________________________
void TreeWriter::AddBranch(const char *name, const char *cname, 
                           void *obj, Int_t bsize)
{
  // Add branch with name "name" into tree with name "tname" and set its address 
  // to object pointer for class name "cname" using a given buffer size and default splitlevel.

  MyTree  *t = AddOrGetMyTree(GetName());
  TBranch *b = t->Bronch(name, cname, obj, bsize, fDefSL);
  b->SetCompressionLevel(GetCompressLevel());
}

//__________________________________________________________________________________________________
void TreeWriter::AddBranch(const char *name, void *obj, Int_t bsize)
{
  // Add branch with name "name" into tree with name "tname" and set its address 
  // to object pointer using a given buffer size and default splitlevel.

  AddBranch(name, CName(obj), obj, bsize);
}

//__________________________________________________________________________________________________
void TreeWriter::AddBranch(const char *name, const char *cname, 
                           void *obj)
{
  // Add branch with name "name" into tree with name "tname" and set its address 
  // to object pointer for class name "cname" using a default buffer size and splitlevel.

  MyTree  *t = AddOrGetMyTree(GetName());
  TBranch *b = t->Bronch(name, cname, obj, fDefBrSize, fDefSL);
  b->SetCompressionLevel(GetCompressLevel());
}

//__________________________________________________________________________________________________
void TreeWriter::AddBranch(const char *name, void *obj)
{
  // Add branch with name "name" into tree with name "tname" and set its address 
  // to object pointer using a default buffer size and splitlevel.

  AddBranch(name, CName(obj), obj);
}

//__________________________________________________________________________________________________
void TreeWriter::AddBranchToTree(const char *tname, const char *name, const char *cname, 
                                 void *obj, Int_t bsize, Int_t level)
{
  // Add branch with name "name" into tree with name "tname" and set its address 
  // to object pointer for class name "cname" using a given buffer size and splitlevel.

  MyTree  *t = AddOrGetMyTree(tname);
  TBranch *b = t->Bronch(name, cname, obj, bsize, level);
  b->SetCompressionLevel(GetCompressLevel());
}

//__________________________________________________________________________________________________
void TreeWriter::AddBranchToTree(const char *tname, const char *name, void *obj, 
                                 Int_t bsize, Int_t level)
{
  // Add branch with name "name" into tree with name "tname" and set its address 
  // to object pointer using a given buffer size and splitlevel.

  AddBranchToTree(tname, name, CName(obj), obj, bsize, level);
}

//__________________________________________________________________________________________________
void TreeWriter::AddBranchToTree(const char *tname, const char *name, const char *cname, 
                                 void *obj, Int_t bsize)
{
  // Add branch with name "name" into tree with name "tname" and set its address 
  // to object pointer for class name "cname" using a given buffer size and default splitlevel.

  MyTree  *t = AddOrGetMyTree(tname);
  TBranch *b = t->Bronch(name, cname, obj, bsize, fDefSL);
  b->SetCompressionLevel(GetCompressLevel());
}

//__________________________________________________________________________________________________
void TreeWriter::AddBranchToTree(const char *tname, const char *name, void *obj,
                                 Int_t bsize)
{
  // Add branch with name "name" into tree with name "tname" and set its address 
  // to object pointer using a given buffer size and default splitlevel.

  AddBranchToTree(tname, name, CName(obj), obj, bsize);
}

//__________________________________________________________________________________________________
void TreeWriter::AddBranchToTree(const char *tname, const char *name, const char *cname, 
                                 void *obj)
{
  // Add branch with name "name" into tree with name "tname" and set its address 
  // to object pointer for class name "cname" using a default buffer size and splitlevel.

  MyTree  *t = AddOrGetMyTree(tname);
  TBranch *b = t->Bronch(name, cname, obj, fDefBrSize, fDefSL);
  b->SetCompressionLevel(GetCompressLevel());
}

//__________________________________________________________________________________________________
void TreeWriter::AddBranchToTree(const char *tname, const char *name, void *obj)
{
  // Add branch with name "name" into tree with name "tname" and set its address 
  // to object pointer for class name "cname" using a default buffer size and splitlevel.

  AddBranchToTree(tname, name, CName(obj), obj);
}

//__________________________________________________________________________________________________
MyTree *TreeWriter::AddOrGetMyTree(const char *tn)
{
  // Add new tree if not present in array of trees or return
  // present tree.

  MyTree *tree = dynamic_cast<MyTree*>(fTrees.FindObject(tn));
  if (tree)
    return tree;

  TDirectory::TContext context(fFile); 
  tree = new MyTree(tn, tn);
  tree->SetDirectory(fFile);
  fTrees.AddLast(tree);  
  return tree;
}

//__________________________________________________________________________________________________
Bool_t TreeWriter::BeginEvent(Bool_t doreset)
{
  // Prepare for the next event. If doreset or fDoObjNumReset is kTRUE
  // store the current object number to be reset in FillEvent().

  if (!fIsInit) {
    OpenFile();
  }

  if (doreset || fDoObjNumReset) {
    fEvtObjNum = TProcessID::GetObjectCount();
  }

  return kTRUE;
}

//__________________________________________________________________________________________________
void TreeWriter::CloseFile()
{
  // Write tree(s) and close file.

  if (!fIsInit) {
    Fatal("CloseFile", "File was not opened, call OpenFile() first!");
    return;
  }

  TDirectory::TContext context(fFile); // cd fFile && 
                                       // automatically restore gDirectory

  for (Int_t i=0;i<fTrees.GetEntries();++i) {
    MyTree *mt = static_cast<MyTree*>(fTrees.At(i));
    mt->Write(mt->GetName(),TObject::kOverwrite);
    mt->Reset();
    mt->SetDirectory(0);   
  }

  fFile->Close();
  delete fFile; 
  fFile = 0;

  fIsInit = kFALSE; 
  fFileNumber++;  
}

//__________________________________________________________________________________________________
const char *TreeWriter::CName(void *obj) const 
{
  // Dereference void* pointer into TObject* pointer

  TObject *tobj = dynamic_cast<TObject*>(*(TObject**)obj);
  if (tobj==0) {
    Fatal("ClassName", "Given void* ptr can not be dereferenced into TObject*");
  }
  return tobj->ClassName();
}

//__________________________________________________________________________________________________
Bool_t TreeWriter::EndEvent(Bool_t doreset)
{
  // Store the event in the tree. If doreset or fDoObjNumReset is kTRUE
  // restore the stored object number at the time BeginEvent(kTRUE) 
  // was called.
   
  if (!fIsInit) {
    Fatal("EndEvent", "File is not open, did you call BeginEvent?");
    return kFALSE;
  }

  Int_t r = 0;
  for (Int_t i=0;i<fTrees.GetEntries();++i) {
    MyTree *mt = static_cast<MyTree*>(fTrees.At(i));
    if (mt->GetAutoFill()==0)
      continue;
    r += mt->Fill();
  }

  if (IsFull())
    CloseFile();

  if (doreset || fDoObjNumReset) {
    if (fEvtObjNum<0) {
      Error("EndEvent", "Object counter is zero. Did you call BeginEvent(kTRUE)?");
    } else {
      // Reset the TRef table. keep it from growing with each event (see doc)
      TProcessID::SetObjectCount(fEvtObjNum);
    }
  }

  return (r >= 0);
}

//-------------------------------------------------------------------------------------------------
Long64_t TreeWriter::GetEntries(const char *tn) const
{ 
  // Return entries of tree with given name. If no tree is given, return sum of entries
  // of all trees.

   if (fTrees.GetEntries()==0) return -1;

   if (tn) {
     const TTree *mt=GetTree(tn);
     if (mt)
       return mt->GetEntries();
     else
       return -1;
   }

   Long64_t ret = 0;
   for (Int_t i=0;i<fTrees.GetEntries();++i) {
      const MyTree *mt = static_cast<const MyTree*>(fTrees.At(i));
      ret += mt->GetEntries();
   }
   return ret;
}

//-------------------------------------------------------------------------------------------------
MyTree *mithep::TreeWriter::GetMyTree(const char *tn)
{
  // Return MyTree with given name from array.

  if (fTrees.GetEntries()==0) 
    return 0;

  TObject *obj = 0;
  if (tn==0) {
    obj = fTrees.At(0);
  } else {
    obj = fTrees.FindObject(tn);
  }
  
  if (obj)  
    return static_cast<MyTree*>(obj);
  return 0;
}   

//-------------------------------------------------------------------------------------------------
const TTree *mithep::TreeWriter::GetTree(const char *tn) const
{
  // Return TTree with given name from array.

  if (fTrees.GetEntries()==0) 
    return 0;

  TObject *obj = 0;
  if (tn==0) {
    obj = fTrees.At(0);
  } else {
    obj = fTrees.FindObject(tn);
  }
  
  if (obj)  
    return dynamic_cast<const TTree*>(obj);
  return 0;
}   

//-------------------------------------------------------------------------------------------------
TTree *mithep::TreeWriter::GetTree(const char *tn)
{
  // Return TTree with given name from array.

  if (fTrees.GetEntries()==0) 
    return 0;

  TObject *obj = 0;
  if (tn==0) {
    obj = fTrees.At(0);
  } else {
    obj = fTrees.FindObject(tn);
  }
  
  if (obj)  
    return dynamic_cast<TTree*>(obj);
  return 0;
}   

//__________________________________________________________________________________________________
Bool_t TreeWriter::IsFull() const
{
  // Check if the maximum file size has been reached.

  Long64_t entries = GetEntries();
  if (entries < 1) return kFALSE;
   
  Long64_t avgSize = GetFileSize() / entries;
   
  if (avgSize < fkMinAvgSize)
    avgSize = fkMinAvgSize;

  return (GetFileSize() + avgSize + fkMinFreeSpace) > fMaxSize;
}

//__________________________________________________________________________________________________
void TreeWriter::OpenFile()
{
  // Open the file and attach the tree.

  if (fIsInit) {
    Fatal("OpenFile", "File is already open, call CloseFile first!");
    return;
  }

  TDirectory::TContext context(0);
   
  TString pathname=GetFullName();
  gSystem->ExpandPathName(pathname);

  fFile = TFile::Open(pathname, "RECREATE");
  if (fFile == 0) {
    Fatal("OpenFile", "Could not open file %s", pathname.Data());
    return;
  }

  fFile->SetCompressionLevel(fCompressLevel);

  for (Int_t i=0;i<fTrees.GetEntries();++i) {
    MyTree *mt = static_cast<MyTree*>(fTrees.At(i));
    mt->SetDirectory(fFile);
  }

  fIsInit = kTRUE;
}

//__________________________________________________________________________________________________
void TreeWriter::Print(Option_t *option) const
{
  // Print the contents of the tree writer.

  if (option) {
    cout << ClassName() << " with members " << endl;
    cout << "   fBaseURL:       " << fBaseURL << endl; 
    cout << "   fPreFix:        " << fPrefix << endl; 
    cout << "   fFileNumber:    " << fFileNumber << endl; 
    cout << "   fCompressLevel: " << fCompressLevel << endl; 
    cout << "   fDefBrSize:     " << fDefBrSize << endl; 
    cout << "   fDefSL:         " << fDefSL << endl; 
    cout << "   fMaxSize:       " << fMaxSize << endl; 
    cout << "   fDoObjNumReset: " << fDoObjNumReset << endl;
    return;
  }

  cout << ClassName() << ": " << GetEntries() 
       << (GetEntries() == 1 ? " event" : " events") << endl;
}

//-------------------------------------------------------------------------------------------------
void TreeWriter::SetAutoFill(const char *tn, Bool_t b)
{
  // Set auto-fill mode of tree with given name.

  if (fTrees.GetEntries()==0)
    return;

  MyTree *mt = GetMyTree(tn);
  if (!mt)
    return;

  mt->SetAutoFill(b);
}


//-------------------------------------------------------------------------------------------------
void TreeWriter::SetMaxSize(Long64_t s) 
{ 
  // Set maximum file size. Check if this exceeds the ROOT file size and if, 
  // print a warning and adjust it.

  if (s>=(Long64_t)(0.99 * TTree::GetMaxTreeSize())) {
    Long64_t news = (Long64_t)(s/0.99);
    Warning("SetMaxSize", "Maximum tree size increased from %lld to %lld",
            TTree::GetMaxTreeSize(), news);
    TTree::SetMaxTreeSize(news);
  }

  fMaxSize=s; 
}

//__________________________________________________________________________________________________
void TreeWriter::StoreObject(const TObject *obj)
{
  // Store object next to tree in file. Used to store the
  // settings of how the tree was created.

  if (!fIsInit) {
    Fatal("StoreObject", "Tree is not created, call create first!");
    return;
  }

  if (!obj) {
    Fatal("StoreObject", "Ptr to TObject is null!");
    return;
  }

  fFile->WriteTObject(obj,obj->GetName(),"WriteDelete");
}
Revision:	1.7
Committed:	Thu Jun 26 16:45:27 2008 UTC (16 years, 10 months ago) by loizides
Content type:	text/plain
Branch:	MAIN
Changes since 1.6:	+19 -13 lines
Log Message:	Enable compression. Although still not all branches seem to be compressed
#	User	Rev	Content
1	loizides	1.7	// $Id: TreeWriter.cc,v 1.6 2008/06/24 14:05:03 loizides Exp $
2	loizides	1.1
3			#include "MitAna/DataUtil/interface/TreeWriter.h"
4
5			#include <Riostream.h>
6			#include <TObject.h>
7			#include <TSystem.h>
8			#include <TProcessID.h>
9
10	loizides	1.3	#include "MitAna/DataUtil/interface/Debug.h"
11
12	loizides	1.1	using namespace mithep;
13
14			ClassImp(mithep::TreeWriter)
15
16			//__________________________________________________________________________________________________
17	loizides	1.5	TreeWriter::TreeWriter(const char *tname, Bool_t doreset) :
18			TNamed(tname,Form("%s written by mithep::TreeWriter", tname)),
19			fBaseURL("."),
20			fPrefix("mithep"),
21			fFileNumber(0),
22			fCompressLevel(9),
23			fDefBrSize(64*1024),
24			fDefSL(99),
25			fMaxSize((Long64_t)(0.99 * TTree::GetMaxTreeSize())),
26			fkMinFreeSpace(1024*1024),
27			fkMinAvgSize(10*1024),
28			fEvtObjNum(-1),
29			fIsInit(kFALSE),
30			fDoObjNumReset(doreset),
31			fFile(0),
32			fTrees(0)
33	loizides	1.1	{
34			// Constructor.
35
36	loizides	1.2	fTrees.SetOwner();
37	loizides	1.1	}
38
39			//__________________________________________________________________________________________________
40			TreeWriter::~TreeWriter()
41			{
42			// Destructor.
43
44	loizides	1.2	if (fIsInit) {
45	loizides	1.1	CloseFile();
46			}
47
48			TDirectory::TContext context(0);
49	loizides	1.2	fTrees.Clear();
50			}
51
52			//__________________________________________________________________________________________________
53			void TreeWriter::AddBranch(const char name, const char cname,
54			void *obj, Int_t bsize, Int_t level)
55			{
56			// Add branch with name "name" into tree with name "tname" and set its address
57			// to object pointer for class name "cname" using a given buffer size and splitlevel.
58
59	loizides	1.7	MyTree *t = AddOrGetMyTree(GetName());
60			TBranch *b = t->Bronch(name, cname, obj, bsize, level);
61			b->SetCompressionLevel(GetCompressLevel());
62	loizides	1.1	}
63
64	loizides	1.3
65			//__________________________________________________________________________________________________
66			void TreeWriter::AddBranch(const char name, void obj, Int_t bsize, Int_t level)
67			{
68			// Add branch with name "name" into tree with name "tname" and set its address
69			// to object pointer using a given buffer size and splitlevel.
70
71			AddBranch(name, CName(obj), obj, bsize, level);
72			}
73
74	loizides	1.1	//__________________________________________________________________________________________________
75	loizides	1.2	void TreeWriter::AddBranch(const char name, const char cname,
76			void *obj, Int_t bsize)
77	loizides	1.1	{
78	loizides	1.2	// Add branch with name "name" into tree with name "tname" and set its address
79			// to object pointer for class name "cname" using a given buffer size and default splitlevel.
80	loizides	1.1
81	loizides	1.7	MyTree *t = AddOrGetMyTree(GetName());
82			TBranch *b = t->Bronch(name, cname, obj, bsize, fDefSL);
83			b->SetCompressionLevel(GetCompressLevel());
84	loizides	1.1	}
85
86			//__________________________________________________________________________________________________
87	loizides	1.3	void TreeWriter::AddBranch(const char name, void obj, Int_t bsize)
88			{
89			// Add branch with name "name" into tree with name "tname" and set its address
90			// to object pointer using a given buffer size and default splitlevel.
91
92			AddBranch(name, CName(obj), obj, bsize);
93			}
94
95			//__________________________________________________________________________________________________
96	loizides	1.2	void TreeWriter::AddBranch(const char name, const char cname,
97			void *obj)
98	loizides	1.1	{
99	loizides	1.2	// Add branch with name "name" into tree with name "tname" and set its address
100	loizides	1.3	// to object pointer for class name "cname" using a default buffer size and splitlevel.
101	loizides	1.1
102	loizides	1.7	MyTree *t = AddOrGetMyTree(GetName());
103			TBranch *b = t->Bronch(name, cname, obj, fDefBrSize, fDefSL);
104			b->SetCompressionLevel(GetCompressLevel());
105	loizides	1.1	}
106
107			//__________________________________________________________________________________________________
108	loizides	1.3	void TreeWriter::AddBranch(const char name, void obj)
109			{
110			// Add branch with name "name" into tree with name "tname" and set its address
111			// to object pointer using a default buffer size and splitlevel.
112
113			AddBranch(name, CName(obj), obj);
114			}
115
116			//__________________________________________________________________________________________________
117	loizides	1.2	void TreeWriter::AddBranchToTree(const char tname, const char name, const char *cname,
118			void *obj, Int_t bsize, Int_t level)
119	loizides	1.1	{
120	loizides	1.2	// Add branch with name "name" into tree with name "tname" and set its address
121			// to object pointer for class name "cname" using a given buffer size and splitlevel.
122	loizides	1.1
123	loizides	1.7	MyTree *t = AddOrGetMyTree(tname);
124			TBranch *b = t->Bronch(name, cname, obj, bsize, level);
125			b->SetCompressionLevel(GetCompressLevel());
126	loizides	1.2	}
127
128			//__________________________________________________________________________________________________
129	loizides	1.3	void TreeWriter::AddBranchToTree(const char tname, const char name, void *obj,
130			Int_t bsize, Int_t level)
131			{
132			// Add branch with name "name" into tree with name "tname" and set its address
133			// to object pointer using a given buffer size and splitlevel.
134
135			AddBranchToTree(tname, name, CName(obj), obj, bsize, level);
136			}
137
138			//__________________________________________________________________________________________________
139	loizides	1.2	void TreeWriter::AddBranchToTree(const char tname, const char name, const char *cname,
140	loizides	1.3	void *obj, Int_t bsize)
141	loizides	1.2	{
142			// Add branch with name "name" into tree with name "tname" and set its address
143			// to object pointer for class name "cname" using a given buffer size and default splitlevel.
144
145	loizides	1.7	MyTree *t = AddOrGetMyTree(tname);
146			TBranch *b = t->Bronch(name, cname, obj, bsize, fDefSL);
147			b->SetCompressionLevel(GetCompressLevel());
148	loizides	1.2	}
149
150			//__________________________________________________________________________________________________
151	loizides	1.3	void TreeWriter::AddBranchToTree(const char tname, const char name, void *obj,
152			Int_t bsize)
153			{
154			// Add branch with name "name" into tree with name "tname" and set its address
155			// to object pointer using a given buffer size and default splitlevel.
156
157			AddBranchToTree(tname, name, CName(obj), obj, bsize);
158			}
159
160			//__________________________________________________________________________________________________
161	loizides	1.2	void TreeWriter::AddBranchToTree(const char tname, const char name, const char *cname,
162	loizides	1.3	void *obj)
163	loizides	1.2	{
164			// Add branch with name "name" into tree with name "tname" and set its address
165	loizides	1.3	// to object pointer for class name "cname" using a default buffer size and splitlevel.
166	loizides	1.2
167	loizides	1.7	MyTree *t = AddOrGetMyTree(tname);
168			TBranch *b = t->Bronch(name, cname, obj, fDefBrSize, fDefSL);
169			b->SetCompressionLevel(GetCompressLevel());
170	loizides	1.2	}
171
172			//__________________________________________________________________________________________________
173	loizides	1.3	void TreeWriter::AddBranchToTree(const char tname, const char name, void *obj)
174			{
175			// Add branch with name "name" into tree with name "tname" and set its address
176			// to object pointer for class name "cname" using a default buffer size and splitlevel.
177
178			AddBranchToTree(tname, name, CName(obj), obj);
179			}
180
181			//__________________________________________________________________________________________________
182	loizides	1.2	MyTree TreeWriter::AddOrGetMyTree(const char tn)
183			{
184			// Add new tree if not present in array of trees or return
185			// present tree.
186
187			MyTree tree = dynamic_cast<MyTree>(fTrees.FindObject(tn));
188	paus	1.4	if (tree)
189			return tree;
190	loizides	1.2
191			TDirectory::TContext context(fFile);
192			tree = new MyTree(tn, tn);
193			tree->SetDirectory(fFile);
194			fTrees.AddLast(tree);
195			return tree;
196	loizides	1.1	}
197
198			//__________________________________________________________________________________________________
199			Bool_t TreeWriter::BeginEvent(Bool_t doreset)
200			{
201			// Prepare for the next event. If doreset or fDoObjNumReset is kTRUE
202			// store the current object number to be reset in FillEvent().
203
204			if (!fIsInit) {
205			OpenFile();
206			}
207
208	loizides	1.2	if (doreset \|\| fDoObjNumReset) {
209	loizides	1.1	fEvtObjNum = TProcessID::GetObjectCount();
210			}
211
212			return kTRUE;
213			}
214
215			//__________________________________________________________________________________________________
216			void TreeWriter::CloseFile()
217			{
218	loizides	1.2	// Write tree(s) and close file.
219	loizides	1.1
220			if (!fIsInit) {
221			Fatal("CloseFile", "File was not opened, call OpenFile() first!");
222			return;
223			}
224
225			TDirectory::TContext context(fFile); // cd fFile &&
226			// automatically restore gDirectory
227
228	loizides	1.2	for (Int_t i=0;i<fTrees.GetEntries();++i) {
229			MyTree mt = static_cast<MyTree>(fTrees.At(i));
230			mt->Write(mt->GetName(),TObject::kOverwrite);
231			mt->Reset();
232			mt->SetDirectory(0);
233			}
234	loizides	1.1
235			fFile->Close();
236			delete fFile;
237			fFile = 0;
238
239			fIsInit = kFALSE;
240			fFileNumber++;
241			}
242
243			//__________________________________________________________________________________________________
244	loizides	1.3	const char TreeWriter::CName(void obj) const
245			{
246			// Dereference void* pointer into TObject* pointer
247
248			TObject tobj = dynamic_cast<TObject>((TObject*)obj);
249	paus	1.4	if (tobj==0) {
250	loizides	1.3	Fatal("ClassName", "Given void* ptr can not be dereferenced into TObject*");
251			}
252			return tobj->ClassName();
253			}
254
255			//__________________________________________________________________________________________________
256	loizides	1.1	Bool_t TreeWriter::EndEvent(Bool_t doreset)
257			{
258			// Store the event in the tree. If doreset or fDoObjNumReset is kTRUE
259			// restore the stored object number at the time BeginEvent(kTRUE)
260			// was called.
261
262			if (!fIsInit) {
263			Fatal("EndEvent", "File is not open, did you call BeginEvent?");
264			return kFALSE;
265			}
266
267	loizides	1.2	Int_t r = 0;
268			for (Int_t i=0;i<fTrees.GetEntries();++i) {
269			MyTree mt = static_cast<MyTree>(fTrees.At(i));
270	paus	1.4	if (mt->GetAutoFill()==0)
271			continue;
272	loizides	1.2	r += mt->Fill();
273			}
274	loizides	1.1
275	loizides	1.2	if (IsFull())
276	loizides	1.1	CloseFile();
277
278			if (doreset \|\| fDoObjNumReset) {
279			if (fEvtObjNum<0) {
280			Error("EndEvent", "Object counter is zero. Did you call BeginEvent(kTRUE)?");
281			} else {
282			// Reset the TRef table. keep it from growing with each event (see doc)
283			TProcessID::SetObjectCount(fEvtObjNum);
284			}
285			}
286
287			return (r >= 0);
288			}
289
290	loizides	1.2	//-------------------------------------------------------------------------------------------------
291			Long64_t TreeWriter::GetEntries(const char *tn) const
292			{
293	loizides	1.6	// Return entries of tree with given name. If no tree is given, return sum of entries
294			// of all trees.
295	loizides	1.2
296			if (fTrees.GetEntries()==0) return -1;
297
298			if (tn) {
299			const TTree *mt=GetTree(tn);
300	paus	1.4	if (mt)
301			return mt->GetEntries();
302			else
303			return -1;
304	loizides	1.2	}
305
306			Long64_t ret = 0;
307			for (Int_t i=0;i<fTrees.GetEntries();++i) {
308			const MyTree mt = static_cast<const MyTree>(fTrees.At(i));
309			ret += mt->GetEntries();
310			}
311			return ret;
312			}
313
314			//-------------------------------------------------------------------------------------------------
315			MyTree mithep::TreeWriter::GetMyTree(const char tn)
316			{
317			// Return MyTree with given name from array.
318
319			if (fTrees.GetEntries()==0)
320			return 0;
321
322			TObject *obj = 0;
323			if (tn==0) {
324			obj = fTrees.At(0);
325			} else {
326			obj = fTrees.FindObject(tn);
327			}
328
329			if (obj)
330			return static_cast<MyTree*>(obj);
331			return 0;
332			}
333
334			//-------------------------------------------------------------------------------------------------
335			const TTree mithep::TreeWriter::GetTree(const char tn) const
336			{
337			// Return TTree with given name from array.
338
339			if (fTrees.GetEntries()==0)
340			return 0;
341
342			TObject *obj = 0;
343			if (tn==0) {
344			obj = fTrees.At(0);
345			} else {
346			obj = fTrees.FindObject(tn);
347			}
348
349			if (obj)
350			return dynamic_cast<const TTree*>(obj);
351			return 0;
352			}
353
354			//-------------------------------------------------------------------------------------------------
355			TTree mithep::TreeWriter::GetTree(const char tn)
356			{
357			// Return TTree with given name from array.
358
359			if (fTrees.GetEntries()==0)
360			return 0;
361
362			TObject *obj = 0;
363			if (tn==0) {
364			obj = fTrees.At(0);
365			} else {
366			obj = fTrees.FindObject(tn);
367			}
368
369			if (obj)
370			return dynamic_cast<TTree*>(obj);
371			return 0;
372			}
373
374	loizides	1.1	//__________________________________________________________________________________________________
375			Bool_t TreeWriter::IsFull() const
376			{
377			// Check if the maximum file size has been reached.
378
379			Long64_t entries = GetEntries();
380			if (entries < 1) return kFALSE;
381
382			Long64_t avgSize = GetFileSize() / entries;
383
384			if (avgSize < fkMinAvgSize)
385			avgSize = fkMinAvgSize;
386
387			return (GetFileSize() + avgSize + fkMinFreeSpace) > fMaxSize;
388			}
389
390			//__________________________________________________________________________________________________
391			void TreeWriter::OpenFile()
392			{
393			// Open the file and attach the tree.
394
395			if (fIsInit) {
396			Fatal("OpenFile", "File is already open, call CloseFile first!");
397			return;
398			}
399
400			TDirectory::TContext context(0);
401
402			TString pathname=GetFullName();
403			gSystem->ExpandPathName(pathname);
404
405			fFile = TFile::Open(pathname, "RECREATE");
406			if (fFile == 0) {
407			Fatal("OpenFile", "Could not open file %s", pathname.Data());
408			return;
409			}
410
411			fFile->SetCompressionLevel(fCompressLevel);
412	loizides	1.2
413			for (Int_t i=0;i<fTrees.GetEntries();++i) {
414			MyTree mt = static_cast<MyTree>(fTrees.At(i));
415			mt->SetDirectory(fFile);
416			}
417
418	loizides	1.1	fIsInit = kTRUE;
419			}
420
421			//__________________________________________________________________________________________________
422			void TreeWriter::Print(Option_t *option) const
423			{
424			// Print the contents of the tree writer.
425
426	loizides	1.2	if (option) {
427	loizides	1.1	cout << ClassName() << " with members " << endl;
428			cout << " fBaseURL: " << fBaseURL << endl;
429			cout << " fPreFix: " << fPrefix << endl;
430			cout << " fFileNumber: " << fFileNumber << endl;
431			cout << " fCompressLevel: " << fCompressLevel << endl;
432			cout << " fDefBrSize: " << fDefBrSize << endl;
433			cout << " fDefSL: " << fDefSL << endl;
434			cout << " fMaxSize: " << fMaxSize << endl;
435			cout << " fDoObjNumReset: " << fDoObjNumReset << endl;
436			return;
437			}
438
439			cout << ClassName() << ": " << GetEntries()
440			<< (GetEntries() == 1 ? " event" : " events") << endl;
441			}
442
443	loizides	1.2	//-------------------------------------------------------------------------------------------------
444			void TreeWriter::SetAutoFill(const char *tn, Bool_t b)
445			{
446			// Set auto-fill mode of tree with given name.
447
448	paus	1.4	if (fTrees.GetEntries()==0)
449			return;
450	loizides	1.2
451			MyTree *mt = GetMyTree(tn);
452	paus	1.4	if (!mt)
453			return;
454	loizides	1.2
455			mt->SetAutoFill(b);
456			}
457
458	loizides	1.5
459			//-------------------------------------------------------------------------------------------------
460			void TreeWriter::SetMaxSize(Long64_t s)
461			{
462			// Set maximum file size. Check if this exceeds the ROOT file size and if,
463			// print a warning and adjust it.
464
465			if (s>=(Long64_t)(0.99 * TTree::GetMaxTreeSize())) {
466			Long64_t news = (Long64_t)(s/0.99);
467			Warning("SetMaxSize", "Maximum tree size increased from %lld to %lld",
468			TTree::GetMaxTreeSize(), news);
469			TTree::SetMaxTreeSize(news);
470			}
471
472			fMaxSize=s;
473			}
474
475	loizides	1.1	//__________________________________________________________________________________________________
476			void TreeWriter::StoreObject(const TObject *obj)
477			{
478			// Store object next to tree in file. Used to store the
479			// settings of how the tree was created.
480
481			if (!fIsInit) {
482			Fatal("StoreObject", "Tree is not created, call create first!");
483			return;
484			}
485
486			if (!obj) {
487			Fatal("StoreObject", "Ptr to TObject is null!");
488			return;
489			}
490
491			fFile->WriteTObject(obj,obj->GetName(),"WriteDelete");
492			}