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class TBasket: public TKey


TBasket

The TBasket objects are created at run time to collect TTree entries
in buffers. When a Basket is full, it is written to the file.
The Basket is kept in memory if there is enough space.
(see the fMaxVirtualsize of TTree).

The Basket class derives from TKey.

Function Members (Methods)

public:

virtual	~TBasket()
void	TObject::AbstractMethod(const char* method) const
virtual void	AdjustSize(Int_t newsize)
virtual void	TObject::AppendPad(Option_t* option = "")
virtual void	TKey::Browse(TBrowser* b)
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 Int_t	TNamed::Compare(const TObject* obj) const
virtual void	TNamed::Copy(TObject& named) const
Long64_t	CopyTo(TFile* to)
virtual void	TKey::Delete(Option_t* option = "")
virtual void	TKey::DeleteBuffer()
virtual void	DeleteEntryOffset()
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 Int_t	DropBuffers()
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	TKey::FillBuffer(char*& buffer)
virtual TObject*	TObject::FindObject(const char* name) const
virtual TObject*	TObject::FindObject(const TObject* obj) const
TBranch*	GetBranch() const
virtual char*	TKey::GetBuffer() const
TBuffer*	TKey::GetBufferRef() const
Int_t	GetBufferSize() const
virtual const char*	TKey::GetClassName() const
Short_t	TKey::GetCycle() const
const TDatime&	TKey::GetDatime() const
Int_t*	GetDisplacement() const
virtual Option_t*	TObject::GetDrawOption() const
static Long_t	TObject::GetDtorOnly()
Int_t*	GetEntryOffset() const
Int_t	GetEntryPointer(Int_t Entry)
TFile*	TKey::GetFile() const
virtual const char*	TKey::GetIconName() const
Short_t	TKey::GetKeep() const
Int_t	TKey::GetKeylen() const
Int_t	GetLast() const
TDirectory*	TKey::GetMotherDir() const
virtual const char*	TNamed::GetName() const
Int_t	TKey::GetNbytes() const
Int_t	GetNevBuf() const
Int_t	GetNevBufSize() const
virtual char*	TObject::GetObjectInfo(Int_t px, Int_t py) const
static Bool_t	TObject::GetObjectStat()
Int_t	TKey::GetObjlen() const
virtual Option_t*	TObject::GetOption() const
virtual Long64_t	TKey::GetSeekKey() const
virtual Long64_t	TKey::GetSeekPdir() const
virtual const char*	TKey::GetTitle() const
virtual UInt_t	TObject::GetUniqueID() const
Int_t	TKey::GetVersion() const
virtual Bool_t	TObject::HandleTimer(TTimer* timer)
virtual ULong_t	TKey::Hash() const
virtual void	TKey::IncrementPidOffset(UShort_t offset)
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
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	TKey::IsFolder() const
Bool_t	TObject::IsOnHeap() const
virtual Bool_t	TNamed::IsSortable() const
Bool_t	TObject::IsZombie() const
virtual void	TKey::Keep()
Int_t	LoadBasketBuffers(Long64_t pos, Int_t len, TFile* file, TTree* tree = 0)
virtual void	TKey::ls(Option_t* option = "") const
void	TObject::MayNotUse(const char* method) const
virtual void	MoveEntries(Int_t dentries)
virtual Bool_t	TObject::Notify()
void	TObject::Obsolete(const char* method, const char* asOfVers, const char* removedFromVers) const
void	TObject::operator delete(void* ptr)
void	TObject::operator delete(void* ptr, void* vp)
void	TObject::operator delete[](void* ptr)
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)
virtual void	TObject::Paint(Option_t* option = "")
virtual void	TObject::Pop()
virtual void	PrepareBasket(Long64_t)
virtual void	TKey::Print(Option_t* option = "") const
virtual Int_t	TKey::Read(TObject* obj)
Int_t	ReadBasketBuffers(Long64_t pos, Int_t len, TFile* file)
Int_t	ReadBasketBytes(Long64_t pos, TFile* file)
virtual void	TKey::ReadBuffer(char*& buffer)
virtual Bool_t	TKey::ReadFile()
void	TKey::ReadKeyBuffer(char*& buffer)
virtual TObject*	TKey::ReadObj()
virtual void*	TKey::ReadObjectAny(const TClass* expectedClass)
virtual TObject*	TKey::ReadObjWithBuffer(char* bufferRead)
virtual void	TObject::RecursiveRemove(TObject* obj)
virtual void	Reset()
void	TObject::ResetBit(UInt_t f)
virtual void	TObject::SaveAs(const char* filename = "", Option_t* option = "") constMENU
virtual void	TObject::SavePrimitive(ostream& out, Option_t* option = "")
void	TObject::SetBit(UInt_t f)
void	TObject::SetBit(UInt_t f, Bool_t set)
void	SetBranch(TBranch* branch)
virtual void	TKey::SetBuffer()
virtual void	TObject::SetDrawOption(Option_t* option = "")MENU
static void	TObject::SetDtorOnly(void* obj)
void	TKey::SetMotherDir(TDirectory* dir)
virtual void	TNamed::SetName(const char* name)MENU
virtual void	TNamed::SetNameTitle(const char* name, const char* title)
void	SetNevBufSize(Int_t n)
static void	TObject::SetObjectStat(Bool_t stat)
virtual void	TKey::SetParent(const TObject* parent)
virtual void	SetReadMode()
virtual void	TNamed::SetTitle(const char* title = "")MENU
virtual void	TObject::SetUniqueID(UInt_t uid)
virtual void	SetWriteMode()
virtual void	ShowMembers(TMemberInspector& insp) const
virtual Int_t	TKey::Sizeof() const
virtual void	Streamer(TBuffer&)
void	StreamerNVirtual(TBuffer& ClassDef_StreamerNVirtual_b)
virtual void	TObject::SysError(const char* method, const char* msgfmt) const
	TBasket()
	TBasket(TDirectory* motherDir)
	TBasket(const char* name, const char* title, TBranch* branch)
Bool_t	TObject::TestBit(UInt_t f) const
Int_t	TObject::TestBits(UInt_t f) const
void	Update(Int_t newlast)
virtual void	Update(Int_t newlast, Int_t skipped)
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
virtual Int_t	WriteBuffer()
virtual Int_t	TKey::WriteFile(Int_t cycle = 1, TFile* f = 0)

protected:

void	TKey::Build(TDirectory* motherDir, const char* classname, Long64_t filepos)
virtual void	TKey::Create(Int_t nbytes, TFile* f = 0)
virtual void	TObject::DoError(int level, const char* location, const char* fmt, va_list va) const
void	TObject::MakeZombie()
virtual Int_t	TKey::Read(const char* name)
virtual Int_t	TKey::WriteFileKeepBuffer(TFile* f = 0)

private:

void	InitializeCompressedBuffer(Int_t len, TFile* file)
TBasket&	operator=(const TBasket&)
Int_t	ReadBasketBuffersUncompressedCase()
Int_t	ReadBasketBuffersUnzip(char, Int_t, Bool_t, TFile)
	TBasket(const TBasket&)

Data Members

public:

static TObject::(anonymous)	TObject::kBitMask
static TObject::EStatusBits	TObject::kCanDelete
static TObject::EStatusBits	TObject::kCannotPick
static TObject::EStatusBits	TObject::kHasUUID
static TObject::EStatusBits	TObject::kInvalidObject
static TObject::(anonymous)	TObject::kIsOnHeap
static TObject::EStatusBits	TObject::kIsReferenced
static TObject::EStatusBits	TObject::kMustCleanup
static TObject::EStatusBits	TObject::kNoContextMenu
static TObject::(anonymous)	TObject::kNotDeleted
static TObject::EStatusBits	TObject::kObjInCanvas
static TObject::(anonymous)	TObject::kOverwrite
static TObject::(anonymous)	TObject::kSingleKey
static TObject::(anonymous)	TObject::kWriteDelete
static TObject::(anonymous)	TObject::kZombie

protected:

TBranch*	fBranch	Pointer to the basket support branch
char*	TKey::fBuffer	Object buffer
TBuffer*	TKey::fBufferRef	Pointer to the TBuffer object
Int_t	fBufferSize	fBuffer length in bytes
TString	TKey::fClassName	Object Class name
TBuffer*	fCompressedBufferRef	! Compressed buffer.
Short_t	TKey::fCycle	Cycle number
TDatime	TKey::fDatime	Date/Time of insertion in file
Int_t*	fDisplacement	![fNevBuf] Displacement of entries in fBuffer(TKey)
Int_t*	fEntryOffset	[fNevBuf] Offset of entries in fBuffer(TKey)
Bool_t	fHeaderOnly	True when only the basket header must be read/written
Short_t	TKey::fKeylen	Number of bytes for the key itself
Int_t	fLast	Pointer to last used byte in basket
Int_t	fLastWriteBufferSize	! Size of the buffer last time we wrote it to disk
Int_t	TKey::fLeft	Number of bytes left in current segment
TDirectory*	TKey::fMotherDir	!pointer to mother directory
TString	TNamed::fName	object identifier
Int_t	TKey::fNbytes	Number of bytes for the object on file
Int_t	fNevBuf	Number of entries in basket
Int_t	fNevBufSize	Length in Int_t of fEntryOffset OR fixed length of each entry if fEntryOffset is null!
Int_t	TKey::fObjlen	Length of uncompressed object in bytes
Bool_t	fOwnsCompressedBuffer	! Whether or not we own the compressed buffer.
UShort_t	TKey::fPidOffset	!Offset to be added to the pid index in this key/buffer. This is actually saved in the high bits of fSeekPdir
Long64_t	TKey::fSeekKey	Location of object on file
Long64_t	TKey::fSeekPdir	Location of parent directory on file
TString	TNamed::fTitle	object title
Int_t	TKey::fVersion	Key version identifier

Class Charts

Inheritance Chart:

TObject

←

TNamed

←

TKey

←

TBasket

←

TBasketSQL

Function documentation

TBasket(const TBasket& )

TBasket& operator=(const TBasket& )

Int_t ReadBasketBuffersUnzip(char* , Int_t , Bool_t , TFile* )

 Internal corner cases for ReadBasketBuffers

Int_t ReadBasketBuffersUncompressedCase()

void InitializeCompressedBuffer(Int_t len, TFile* file)

 Helper for managing the compressed buffer.

TBasket()

TBasket(TDirectory* motherDir)

TBasket(const char* name, const char* title, TBranch* branch)

virtual ~TBasket()

void AdjustSize(Int_t newsize)

void DeleteEntryOffset()

Int_t DropBuffers()

TBranch * GetBranch() const

{return fBranch;}

Int_t GetBufferSize() const

{return fBufferSize;}

Int_t * GetDisplacement() const

{return fDisplacement;}

Int_t * GetEntryOffset() const

{return fEntryOffset;}

Int_t GetEntryPointer(Int_t Entry)

Int_t GetNevBuf() const

{return fNevBuf;}

Int_t GetNevBufSize() const

{return fNevBufSize;}

Int_t GetLast() const

{return fLast;}

void MoveEntries(Int_t dentries)

void PrepareBasket(Long64_t )

{}

Int_t ReadBasketBuffers(Long64_t pos, Int_t len, TFile* file)

Int_t ReadBasketBytes(Long64_t pos, TFile* file)

void Reset()

Int_t LoadBasketBuffers(Long64_t pos, Int_t len, TFile* file, TTree* tree = 0)

Long64_t CopyTo(TFile* to)

void SetBranch(TBranch* branch)

{ fBranch = branch; }

void SetNevBufSize(Int_t n)

{ fNevBufSize=n; }

void SetReadMode()

void SetWriteMode()

void Update(Int_t newlast)

{ Update(newlast,newlast); }

void Update(Int_t newlast, Int_t skipped)

Int_t WriteBuffer()