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class THbookFile: public TNamed

  This class is an interface to the Hbook objects in Hbook files
  Any Hbook object (1-D, 2-D, Profile, RWN or CWN can be read
  NB: a THbookFile can only be used in READ mode
      Use the utility in $ROOTSYS/bin/h2root to convert Hbook to Root

 Example of use:
  gSystem->Load("libHbook");
  THbookFile f("myfile.hbook");
  f.ls();
  TH1F *h1 = (TH1F*)f.Get(1);  //import histogram ID=1 in h1
  h1->Fit("gaus");
  THbookTree *T = (THbookTree*)f.Get(111); //import ntuple header
  T->Print();  //show the Hbook ntuple variables
  T->Draw("x","y<0"); // as in normal TTree::Draw

  THbookFile can be browsed via TBrowser.

Function Members (Methods)

public:

	THbookFile()
	THbookFile(const THbookFile&)
	THbookFile(const char* fname, Int_t lrecl = 1024)
virtual	~THbookFile()
void	TObject::AbstractMethod(const char* method) const
virtual void	TObject::AppendPad(Option_t* option = "")
virtual void	Browse(TBrowser* b)
virtual Bool_t	cd(const char* dirname = "")
static TClass*	Class()
virtual const char*	TObject::ClassName() const
virtual void	TNamed::Clear(Option_t* option = "")
virtual TObject*	TNamed::Clone(const char* newname = "") const
virtual void	Close(Option_t* option = "")
virtual Int_t	TNamed::Compare(const TObject* obj) const
virtual TObject*	Convert1D(Int_t id)
virtual TObject*	Convert2D(Int_t id)
virtual TFile*	Convert2root(const char* rootname = "", Int_t lrecl = 0, Option_t* option = "")MENU
virtual TObject*	ConvertCWN(Int_t id)
virtual TObject*	ConvertProfile(Int_t id)
virtual TObject*	ConvertRWN(Int_t id)
virtual void	TNamed::Copy(TObject& named) const
virtual void	TObject::Delete(Option_t* option = "")MENU
void	DeleteID(Int_t id)
virtual Int_t	TObject::DistancetoPrimitive(Int_t px, Int_t py)
virtual void	TObject::Draw(Option_t* option = "")
virtual void	TObject::DrawClass() constMENU
virtual TObject*	TObject::DrawClone(Option_t* option = "") constMENU
virtual void	TObject::Dump() constMENU
virtual void	TObject::Error(const char* method, const char* msgfmt) const
virtual void	TObject::Execute(const char* method, const char* params, Int_t* error = 0)
virtual void	TObject::Execute(TMethod* method, TObjArray* params, Int_t* error = 0)
virtual void	TObject::ExecuteEvent(Int_t event, Int_t px, Int_t py)
virtual void	TObject::Fatal(const char* method, const char* msgfmt) const
virtual void	TNamed::FillBuffer(char*& buffer)
virtual TObject*	FindObject(const char* name) const
virtual TObject*	FindObject(const TObject* obj) const
TObject*	Get(Int_t id)
const char*	GetCurDir() const
virtual Option_t*	TObject::GetDrawOption() const
static Long_t	TObject::GetDtorOnly()
Int_t	GetEntry(Int_t entry, Int_t id, Int_t atype, Float_t* x)
Int_t	GetEntryBranch(Int_t entry, Int_t id)
virtual const char*	TObject::GetIconName() const
TList*	GetList() const
TList*	GetListOfKeys() const
virtual const char*	TNamed::GetName() const
virtual char*	TObject::GetObjectInfo(Int_t px, Int_t py) const
static Bool_t	TObject::GetObjectStat()
virtual Option_t*	TObject::GetOption() const
Long64_t	GetSize() const
virtual const char*	TNamed::GetTitle() const
virtual UInt_t	TObject::GetUniqueID() const
virtual Bool_t	TObject::HandleTimer(TTimer* timer)
virtual ULong_t	TNamed::Hash() const
virtual void	TObject::Info(const char* method, const char* msgfmt) const
virtual Bool_t	TObject::InheritsFrom(const char* classname) const
virtual Bool_t	TObject::InheritsFrom(const TClass* cl) const
void	InitLeaves(Int_t id, Int_t var, TTreeFormula* formula)
virtual void	TObject::Inspect() constMENU
void	TObject::InvertBit(UInt_t f)
virtual TClass*	IsA() const
virtual Bool_t	TObject::IsEqual(const TObject* obj) const
virtual Bool_t	IsFolder() const
Bool_t	TObject::IsOnHeap() const
virtual Bool_t	IsOpen() const
virtual Bool_t	TNamed::IsSortable() const
Bool_t	TObject::IsZombie() const
virtual void	ls(const char* path = "") const
void	TObject::MayNotUse(const char* method) const
virtual Bool_t	TObject::Notify()
static void	TObject::operator delete(void* ptr)
static void	TObject::operator delete(void* ptr, void* vp)
static void	TObject::operator delete[](void* ptr)
static void	TObject::operator delete[](void* ptr, void* vp)
void*	TObject::operator new(size_t sz)
void*	TObject::operator new(size_t sz, void* vp)
void*	TObject::operator new[](size_t sz)
void*	TObject::operator new[](size_t sz, void* vp)
THbookFile&	operator=(const THbookFile&)
virtual void	TObject::Paint(Option_t* option = "")
virtual void	TObject::Pop()
virtual void	TNamed::Print(Option_t* option = "") const
virtual Int_t	TObject::Read(const char* name)
virtual void	TObject::RecursiveRemove(TObject* obj)
void	TObject::ResetBit(UInt_t f)
virtual void	TObject::SaveAs(const char* filename = "", Option_t* option = "") constMENU
virtual void	TObject::SavePrimitive(basic_ostream<char,char_traits<char> >& out, Option_t* option = "")
void	TObject::SetBit(UInt_t f)
void	TObject::SetBit(UInt_t f, Bool_t set)
virtual void	SetBranchAddress(Int_t id, const char* bname, void* add)
virtual void	TObject::SetDrawOption(Option_t* option = "")MENU
static void	TObject::SetDtorOnly(void* obj)
virtual void	TNamed::SetName(const char* name)MENU
virtual void	TNamed::SetNameTitle(const char* name, const char* title)
static void	TObject::SetObjectStat(Bool_t stat)
virtual void	TNamed::SetTitle(const char* title = "")MENU
virtual void	TObject::SetUniqueID(UInt_t uid)
virtual void	ShowMembers(TMemberInspector& insp, char* parent)
virtual Int_t	TNamed::Sizeof() const
virtual void	Streamer(TBuffer& b)
void	StreamerNVirtual(TBuffer& b)
virtual void	TObject::SysError(const char* method, const char* msgfmt) const
Bool_t	TObject::TestBit(UInt_t f) const
Int_t	TObject::TestBits(UInt_t f) const
virtual void	TObject::UseCurrentStyle()
virtual void	TObject::Warning(const char* method, const char* msgfmt) const
virtual Int_t	TObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0)
virtual Int_t	TObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0) const

protected:

virtual void	TObject::DoError(int level, const char* location, const char* fmt, va_list va) const
void	TObject::MakeZombie()

Data Members

public:

enum TObject::EStatusBits {	kCanDelete
	kMustCleanup
	kObjInCanvas
	kIsReferenced
	kHasUUID
	kCannotPick
	kNoContextMenu
	kInvalidObject
};
enum TObject::[unnamed] {	kIsOnHeap
	kNotDeleted
	kZombie
	kBitMask
	kSingleKey
	kOverwrite
	kWriteDelete
};

protected:

TString	fCurDir	name of current directory
TList*	fKeys	list of Hbook keys (Ids) on disk
TList*	fList	list of objects in memory
Int_t	fLrecl	Record length in Hbook machine words
Int_t	fLun	Fortran logical unit for this file
TString	TNamed::fName	object identifier
TString	TNamed::fTitle	object title
static Int_t*	fgLuns
static Bool_t	fgPawInit

Class Charts

Inheritance Inherited Members Includes Libraries

Function documentation

THbookFile()

the constructor

THbookFile(const char* fname, Int_t lrecl = 1024)

  Constructor for an HBook file object

~THbookFile()

destructor

void Browse(TBrowser* b)

 to be implemented

Bool_t cd(const char* dirname = "")

 change directory to dirname

void Close(Option_t* option = "")

 Close the Hbook file

void DeleteID(Int_t id)

remove id from file and memory

TObject * FindObject(const char *name)

 return object with name in fList in memory

TObject * FindObject(const TObject *obj)

 return object with pointer obj in fList in memory

TObject * Get(Int_t id)

 import Hbook object with identifier idd in memory

Int_t GetEntry(Int_t entry, Int_t id, Int_t atype, Float_t* x)

 Read in memory all columns of entry number of ntuple id from the Hbook file

Int_t GetEntryBranch(Int_t entry, Int_t id)

 Read in memory only the branch bname

void InitLeaves(Int_t id, Int_t var, TTreeFormula* formula)

 This function is called from the first entry in TTreePlayer::InitLoop
 It analyzes the list of variables involved in the current query
 and pre-process the internal Hbook tables to speed-up the search
 at the next entries.

Bool_t IsOpen() const

 Returns kTRUE in case file is open and kFALSE if file is not open.

void SetBranchAddress(Int_t id, const char* bname, void* add)

Set branch address

TFile * Convert2root(const char* rootname = "", Int_t lrecl = 0, Option_t* option = "")

 Convert this Hbook file to a Root file with name rootname.
 if rootname="', rootname = hbook file name with .root instead of .hbook
 By default, the Root file is connected and returned
 option:
       - "NO" do not connect the Root file
       - "C"  do not compress file (default is to compress)
       - "L"  do not convert names to lower case (default is to convert)

TObject * ConvertCWN(Int_t id)

 Convert the Column-Wise-Ntuple id to a Root Tree

TObject * ConvertRWN(Int_t id)

 Convert the Row-Wise-Ntuple id to a Root Tree

TObject * ConvertProfile(Int_t id)

 Convert an Hbook profile histogram into a Root TProfile

 the following structure is used in Hbook
    lcid points to the profile in array iq
    lcont = lq(lcid-1)
    lw    = lq(lcont)
    ln    = lq(lw)
      if option S jbyt(iq(lw),1,2) = 1
      if option I jbyt(iq(lw),1,2) = 2

TObject * Convert1D(Int_t id)

 Convert an Hbook 1-d histogram into a Root TH1F

TObject * Convert2D(Int_t id)

 Convert an Hbook 2-d histogram into a Root TH2F

void ls(const char* path = "") const

 List contents of Hbook directory

THbookFile()

const char * GetCurDir() const

{return fCurDir.Data();}

Long64_t GetSize() const

{return 0;}

TList * GetList() const

{return fList;}

TList * GetListOfKeys() const

{ return fKeys; }

Bool_t IsFolder() const

{ return kTRUE; }