library: libCore #include "TRefTable.h" |
TRefTable
class description - source file - inheritance tree (.pdf)
protected:
Int_t AddInternalIdxForPID(TProcessID* procid)
virtual Int_t ExpandForIID(Int_t iid, Int_t newsize)
void ExpandPIDs(Int_t numpids)
Int_t FindPIDGUID(const char* guid) const
Int_t GetInternalIdxForPID(TProcessID* procid) const
Int_t GetInternalIdxForPID(Int_t pid) const
public:
TRefTable()
TRefTable(TObject* owner, Int_t size)
TRefTable(const TRefTable&)
virtual ~TRefTable()
virtual Int_t Add(Int_t uid, TProcessID* context = 0)
static TClass* Class()
virtual void Clear(Option_t* = "")
virtual Int_t Expand(Int_t pid, Int_t newsize)
virtual void FillBuffer(TBuffer& b)
Int_t GetN(Int_t pid) const
Int_t GetNumPIDs() const
TObject* GetOwner() const
TObject* GetParent(Int_t uid, TProcessID* context = 0) const
TObjArray* GetParents() const
static TRefTable* GetRefTable()
Int_t GetSize(Int_t pid) const
UInt_t GetUID() const
TProcessID* GetUIDContext() const
virtual TClass* IsA() const
virtual Bool_t Notify()
TRefTable& operator=(const TRefTable&)
virtual void ReadBuffer(TBuffer& b)
virtual void Reset(Option_t* = "")
virtual Int_t SetParent(const TObject* parent)
static void SetRefTable(TRefTable* table)
virtual void SetUID(UInt_t uid, TProcessID* context = 0)
virtual void ShowMembers(TMemberInspector& insp, char* parent)
virtual void Streamer(TBuffer& b)
void StreamerNVirtual(TBuffer& b)
protected:
Int_t fNumPIDs !number of known ProcessIDs
Int_t* fAllocSize ![fNumPIDs] allocated size of array fParentIDs for each ProcessID
Int_t* fN ![fNumPIDs] current maximum number of IDs in array fParentIDs for each ProcessID
Int_t** fParentIDs ![fNumPIDs][fAllocSize] array of Parent IDs
Int_t fParentID !current parent ID in fParents (latest call to SetParent)
Int_t fDefaultSize !default size for a new PID array
UInt_t fUID !Current uid (set by TRef::GetObject)
TProcessID* fUIDContext !TProcessID the current uid is referring to
Int_t fSize dummy for backward compatibility
TObjArray* fParents array of Parent objects (eg TTree branch) holding the referenced objects
TObject* fOwner Object owning this TRefTable
vector<std::string> fProcessGUIDs UUIDs of TProcessIDs used in fParentIDs
vector<Int_t> fMapPIDtoInternal ! cache of pid to index in fProcessGUIDs
static TRefTable* fgRefTable Pointer to current TRefTable
A TRefTable maintains the association between a referenced object
and the parent object supporting this referenced object.
The parent object is typically a branch of a TTree. For each object
referenced in a TTree entry, the corresponding entry in the TTree's
TBranchRef::fRefTable contains the index of the branch that
needs to be loaded to bring the object into memory.
Persistency of a TRefTable is split into two parts:
* entry specific information is stored (read) by FillBuffer
(ReadBuffer). For each referenced object the object's fUniqueID
and the referencing TRef::fPID is stored (to allow the TRefTable
to autoload references created by different processes).
* non-entry specific, i.e. global information is stored (read) by
the Streamer function. This comprises all members marked as
persistent.
As TObject::fUniqueID is only unique for a given TProcessID, a table
of unique IDs is kept for each used TProcessID. There is no natural
order of TProcessIDs, so TRefTable stores a vector of the TGUID of
all known TProcessIDs in fProcessGUIDs; the index of a TProcessID in
this vector defines the index of the auto-loading info in fParentIDs
for that TProcessID. The mapping of TProcessID* to index is cached
for quick non-persistent lookup.
TRefTable()
Default constructor for I/O.
TRefTable(TObject *owner, Int_t size)
Create a TRefTable with initial size.
~TRefTable()
Destructor.
Int_t Add(Int_t uid, TProcessID *context)
Add a new uid to the table.
we add a new pair (uid,fparent) to the map
This function is called by TObject::Streamer or TStreamerInfo::WriteBuffer
Int_t AddInternalIdxForPID(TProcessID *procid)
Add the internal index for fProcessIDs, fAllocSize, etc given a PID.
void Clear(Option_t * /*option*/ )
Clear all entries in the table.
Int_t Expand(Int_t pid, Int_t newsize)
Expand fParentIDs to newsize for ProcessID pid.
Int_t ExpandForIID(Int_t iid, Int_t newsize)
Expand fParentIDs to newsize for internel ProcessID index iid.
void ExpandPIDs(Int_t numpids)
Expand the arrays of managed PIDs
void FillBuffer(TBuffer & b)
Fill buffer b with the fN elements in fParentdIDs.
This function is called by TBranchRef::FillLeaves.
Int_t FindPIDGUID(const char *guid) const
Get fProcessGUIDs' index of the TProcessID with GUID guid
TObject* GetParent(Int_t uid, TProcessID *context /* =0 */ ) const
Return object corresponding to uid.
Int_t GetInternalIdxForPID(TProcessID *procid) const
Get the index for fProcessIDs, fAllocSize, etc given a PID.
Uses fMapPIDtoInternal and the pid's GUID / fProcessGUID
Int_t GetInternalIdxForPID(Int_t pid) const
Get the index for fProcessIDs, fAllocSize, etc given a PID.
Uses fMapPIDtoInternal and the pid's GUID / fProcessGUID
TRefTable* GetRefTable()
Static function returning the current TRefTable.
Bool_t Notify()
This function is called by TRef::Streamer or TStreamerInfo::ReadBuffer
when reading a reference.
This function, in turns, notifies the TRefTable owner for action.
eg, when the owner is a TBranchRef, TBranchRef::Notify is called
to read the branch containing the referenced object.
void ReadBuffer(TBuffer &b)
Fill buffer b with the fN elements in fParentdIDs.
This function is called by TBranchRef::ReadLeaves
void Reset(Option_t * /*option*/ )
Clear all entries in the table.
Int_t SetParent(const TObject *parent)
Set Current parent object.
The parent object is typically a branch of a Tree.
This function is called by TBranchElement::Fill.
void SetRefTable(TRefTable *table)
Static function setting the current TRefTable.
Inline Functions
Int_t GetNumPIDs() const
Int_t GetSize(Int_t pid) const
Int_t GetN(Int_t pid) const
TObject* GetOwner() const
TObjArray* GetParents() const
UInt_t GetUID() const
TProcessID* GetUIDContext() const
void SetUID(UInt_t uid, TProcessID* context = 0)
TClass* Class()
TClass* IsA() const
void ShowMembers(TMemberInspector& insp, char* parent)
void Streamer(TBuffer& b)
void StreamerNVirtual(TBuffer& b)
TRefTable TRefTable(const TRefTable&)
TRefTable& operator=(const TRefTable&)
Author: Rene Brun 28/09/2001
Last update: root/cont:$Name: $:$Id: TRefTable.cxx,v 1.7 2006/02/17 05:16:38 pcanal Exp $
Copyright (C) 1995-2004, Rene Brun and Fons Rademakers. *
ROOT page - Class index - Class Hierarchy - Top of the page
This page has been automatically generated. If you have any comments or suggestions about the page layout send a mail to ROOT support, or contact the developers with any questions or problems regarding ROOT.