Manages entry lists from different files, when they are not loaded in memory at the same time.

This entry list should only be used when processing a TChain (see TChain::SetEntryList() function). File naming convention:

by default, filename_elist.root is used, where filename is the name of the chain element.
xxx$xxx.root - $ sign is replaced by the name of the chain element If the list name is not specified (by passing filename_elist.root/listname to the TChain::SetEntryList() function, the first object of class TEntryList in the file is taken. It is assumed that there are as many lists, as there are chain elements, and they are in the same order.

If one of the list files can't be opened, or there is an error reading a list from the file, this list is skipped and the entry loop continues on the next list.

Definition at line 40 of file TEntryListFromFile.h.

Public Member Functions
	TEntryListFromFile ()

	TEntryListFromFile (const char filename, const char listname, Int_t nfiles)
	File naming convention:

	~TEntryListFromFile () override
	d-tor

void	Add (const TEntryList *) override
	Add 2 entry lists.

Int_t	Contains (Long64_t, TTree *) override

bool	Enter (Long64_t, const char , const char ) override

bool	Enter (Long64_t, TTree *) override
	Add entry #entry to the list.

TEntryList *	GetCurrentList () const override

virtual Long64_t	GetEntries ()
	Returns the total number of entries in the list.

virtual Long64_t	GetEntriesFast () const

Long64_t	GetEntry (Long64_t index) override
	Returns entry #index See also Next() for a faster alternative.

Long64_t	GetEntryAndTree (Long64_t index, Int_t &treenum) override
	Return the entry corresponding to the index parameter and the number of the tree, where this entry is.

TEntryList *	GetEntryList (const char , const char , Option_t *) override
	Return the entry list, corresponding to treename and filename By default, the filename is first tried as is, and then, if the corresponding list is not found, the filename is expanded to the absolute path, and compared again.

const char *	GetFileName () const override

Long64_t	GetN () const override

const char *	GetTreeName () const override

Int_t	GetTreeNumber () const override

TClass *	IsA () const override

virtual Int_t	LoadList (Int_t listnumber)
	Loads the list #listnumber This is the only function that can modify fCurrent and fFile data members.

Int_t	Merge (TCollection *) override
	Merge this list with the lists from the collection.

Long64_t	Next () override
	Returns the next entry in the list.

void	OptimizeStorage () override
	Checks if the array representation is more economical and if so, switches to it.

void	Print (const Option_t *option="") const override
	Print info about this list.

bool	Remove (Long64_t, TTree *) override
	Remove entry #entry from the list.

virtual void	SetFileNames (TObjArray *names)

virtual void	SetNFiles (Int_t nfiles)

void	SetTree (const char , const char ) override
	If a list for a tree with such name and filename exists, sets it as the current sublist If not, creates this list and sets it as the current sublist.

void	SetTree (const TTree *) override
	If a list for a tree with such name and filename exists, sets it as the current sublist If not, creates this list and sets it as the current sublist The name of the file, where the tree is, is taken as `tree->GetTree()->GetCurrentFile()->GetName()`, and then expanded either to the absolute path, or to full url.

void	SetTreeNumber (Int_t index) override

void	Streamer (TBuffer &) override
	Custom streamer for class TEntryList to handle the different interpretation of fFileName between version 1 and >1 .

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

void	Subtract (const TEntryList *) override
	Remove all the entries of this entry list, that are contained in elist.

Public Member Functions inherited from TEntryList
	TEntryList ()
	default c-tor

	TEntryList (const char name, const char title)
	c-tor with name and title

	TEntryList (const char name, const char title, const char treename, const char filename)
	c-tor with name and title, which also sets the treename and the filename

	TEntryList (const char name, const char title, const TTree *tree)
	constructor with name and title, which also sets the tree

	TEntryList (const TEntryList &elist)
	copy c-tor

	TEntryList (const TTree *tree)
	c-tor, which sets the tree

	~TEntryList () override
	Destructor.

void	AddSubList (TEntryList *elist)
	Add a sub entry list to the current list.

virtual void	DirectoryAutoAdd (TDirectory *)
	Called by TKey and others to automatically add us to a directory when we are read from a file.

void	EnterRange (Long64_t start, Long64_t end, TTree *tree=nullptr, UInt_t step=1U)
	Enter all entries in a range in the TEntryList.

virtual TDirectory *	GetDirectory () const

virtual Long64_t	GetEntriesToProcess () const

virtual TList *	GetLists () const

virtual bool	GetReapplyCut () const

bool	IsValid () const

void	Print (const Option_t *option="") const override
	Print this list.

virtual Int_t	RelocatePaths (const char newloc, const char oldloc=nullptr)
	Relocate the file paths.

virtual void	Reset ()
	Reset this list.

virtual Int_t	ScanPaths (TList *roots, bool notify=true)
	Scan the paths to find the common roots.

virtual void	SetDirectory (TDirectory *dir)
	Add reference to directory dir. dir can be 0.

virtual void	SetEntriesToProcess (Long64_t nen)

virtual void	SetFileName (const char *filename)

virtual void	SetReapplyCut (bool apply=false)

virtual void	SetShift (bool shift)

virtual void	SetTreeName (const char *treename)

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TNamed
	TNamed ()

	TNamed (const char name, const char title)

	TNamed (const TNamed &named)
	TNamed copy ctor.

	TNamed (const TString &name, const TString &title)

virtual	~TNamed ()
	TNamed destructor.

void	Clear (Option_t *option="") override
	Set name and title to empty strings ("").

TObject *	Clone (const char *newname="") const override
	Make a clone of an object using the Streamer facility.

Int_t	Compare (const TObject *obj) const override
	Compare two TNamed objects.

void	Copy (TObject &named) const override
	Copy this to obj.

virtual void	FillBuffer (char *&buffer)
	Encode TNamed into output buffer.

const char *	GetName () const override
	Returns name of object.

const char *	GetTitle () const override
	Returns title of object.

ULong_t	Hash () const override
	Return hash value for this object.

TClass *	IsA () const override

Bool_t	IsSortable () const override

void	ls (Option_t *option="") const override
	List TNamed name and title.

TNamed &	operator= (const TNamed &rhs)
	TNamed assignment operator.

void	Print (Option_t *option="") const override
	Print TNamed name and title.

virtual void	SetName (const char *name)
	Set the name of the TNamed.

virtual void	SetNameTitle (const char name, const char title)
	Set all the TNamed parameters (name and title).

virtual void	SetTitle (const char *title="")
	Set the title of the TNamed.

virtual Int_t	Sizeof () const
	Return size of the TNamed part of the TObject.

void	Streamer (TBuffer &) override
	Stream an object of class TObject.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TObject
	TObject ()
	TObject constructor.

	TObject (const TObject &object)
	TObject copy ctor.

virtual	~TObject ()
	TObject destructor.

void	AbstractMethod (const char *method) const
	Use this method to implement an "abstract" method that you don't want to leave purely abstract.

virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad.

virtual void	Browse (TBrowser *b)
	Browse object. May be overridden for another default action.

ULong_t	CheckedHash ()
	Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object.

virtual const char *	ClassName () const
	Returns name of class to which the object belongs.

virtual void	Delete (Option_t *option="")
	Delete this object.

virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object.

virtual void	Draw (Option_t *option="")
	Default Draw method for all objects.

virtual void	DrawClass () const
	Draw class inheritance tree of the class to which this object belongs.

virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad with: `gROOT->SetSelectedPad(c1)`.

virtual void	Dump () const
	Dump contents of object on stdout.

virtual void	Error (const char method, const char msgfmt,...) const
	Issue error message.

virtual void	Execute (const char method, const char params, Int_t *error=nullptr)
	Execute method on this object with the given parameter string, e.g.

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=nullptr)
	Execute method on this object with parameters stored in the TObjArray.

virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py).

virtual void	Fatal (const char method, const char msgfmt,...) const
	Issue fatal error message.

virtual TObject *	FindObject (const char *name) const
	Must be redefined in derived classes.

virtual TObject *	FindObject (const TObject *obj) const
	Must be redefined in derived classes.

virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object.

virtual const char *	GetIconName () const
	Returns mime type name of object.

virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py).

virtual Option_t *	GetOption () const

virtual UInt_t	GetUniqueID () const
	Return the unique object id.

virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out.

Bool_t	HasInconsistentHash () const
	Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e.

virtual void	Info (const char method, const char msgfmt,...) const
	Issue info message.

virtual Bool_t	InheritsFrom (const char *classname) const
	Returns kTRUE if object inherits from class "classname".

virtual Bool_t	InheritsFrom (const TClass *cl) const
	Returns kTRUE if object inherits from TClass cl.

virtual void	Inspect () const
	Dump contents of this object in a graphics canvas.

void	InvertBit (UInt_t f)

Bool_t	IsDestructed () const
	IsDestructed.

virtual Bool_t	IsEqual (const TObject *obj) const
	Default equal comparison (objects are equal if they have the same address in memory).

virtual Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).

R__ALWAYS_INLINE Bool_t	IsOnHeap () const

R__ALWAYS_INLINE Bool_t	IsZombie () const

void	MayNotUse (const char *method) const
	Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary).

virtual Bool_t	Notify ()
	This method must be overridden to handle object notification (the base implementation is no-op).

void	Obsolete (const char method, const char asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete.

void	operator delete (void *ptr)
	Operator delete.

void	operator delete (void ptr, void vp)
	Only called by placement new when throwing an exception.

void	operator delete[] (void *ptr)
	Operator delete [].

void	operator delete[] (void ptr, void vp)
	Only called by placement new[] when throwing an exception.

void *	operator new (size_t sz)

void *	operator new (size_t sz, void *vp)

void *	operator new[] (size_t sz)

void *	operator new[] (size_t sz, void *vp)

TObject &	operator= (const TObject &rhs)
	TObject assignment operator.

virtual void	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself.

virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list.

virtual Int_t	Read (const char *name)
	Read contents of object with specified name from the current directory.

virtual void	RecursiveRemove (TObject *obj)
	Recursively remove this object from a list.

void	ResetBit (UInt_t f)

virtual void	SaveAs (const char filename="", Option_t option="") const
	Save this object in the file specified by filename.

virtual void	SavePrimitive (std::ostream &out, Option_t *option="")
	Save a primitive as a C++ statement(s) on output stream "out".

void	SetBit (UInt_t f)

void	SetBit (UInt_t f, Bool_t set)
	Set or unset the user status bits as specified in f.

virtual void	SetDrawOption (Option_t *option="")
	Set drawing option for object.

virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

virtual void	SysError (const char method, const char msgfmt,...) const
	Issue system error message.

R__ALWAYS_INLINE Bool_t	TestBit (UInt_t f) const

Int_t	TestBits (UInt_t f) const

virtual void	UseCurrentStyle ()
	Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked.

virtual void	Warning (const char method, const char msgfmt,...) const
	Issue warning message.

virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory.

virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0) const
	Write this object to the current directory.

Static Public Member Functions
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

Static Public Member Functions inherited from TEntryList
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

static Int_t	Relocate (const char fn, const char newroot, const char oldroot=nullptr, const char enlnm=nullptr)
	Relocate entry list 'enlnm' in file 'fn' replacing 'oldroot' with 'newroot' in filenames.

static Int_t	Scan (const char fn, TList roots)
	Scan TEntryList in 'fn' to find the common parts of paths.

Static Public Member Functions inherited from TNamed
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

Static Public Member Functions inherited from TObject
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

static Longptr_t	GetDtorOnly ()
	Return destructor only flag.

static Bool_t	GetObjectStat ()
	Get status of object stat flag.

static void	SetDtorOnly (void *obj)
	Set destructor only flag.

static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable.

Protected Attributes
TFile *	fFile
	currently open file fCurrent points to the currently open list

TObjArray *	fFileNames
	! points to the fFiles data member of the corresponding chain

TString	fListFileName
	from this string names of all files can be found

TString	fListName
	name of the list

Long64_t *	fListOffset
	[fNFiles] numbers of entries in ind. lists

Int_t	fNFiles
	total number of files

Protected Attributes inherited from TEntryList
TObjArray *	fBlocks
	blocks with indices of passing events (TEntryListBlocks)

TEntryList *	fCurrent
	! currently filled entry list

TDirectory *	fDirectory
	! Pointer to directory holding this tree

Long64_t	fEntriesToProcess
	used on proof to set the number of entries to process in a packet

TString	fFileName
	name of the file, where the tree is

Long64_t	fLastIndexQueried
	! used to optimize GetEntry() function from a loop

Long64_t	fLastIndexReturned
	! used to optimize GetEntry() function from a loop

TList *	fLists
	a list of underlying entry lists for each tree of a chain

Long64_t	fN
	number of entries in the list

Int_t	fNBlocks
	number of TEntryListBlocks

bool	fReapply
	If true, TTree::Draw will 'reapply' the original cut.

bool	fShift
	! true when some sub-lists don't correspond to trees (when the entry list is used as input in TChain)

ULong_t	fStringHash
	! Hash value of a string of treename and filename

TString	fTreeName
	name of the tree

Int_t	fTreeNumber
	! the index of the tree in the chain (used when the entry list is used as input (TTree::SetEntryList())

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

Static Protected Attributes
static constexpr auto	kBigNumber = std::numeric_limits<Long64_t>::max()

Private Member Functions
	TEntryListFromFile (const TEntryListFromFile &)

TEntryListFromFile &	operator= (const TEntryListFromFile &)

Additional Inherited Members
Public Types inherited from TEntryList
enum	{ kBlockSize = 64000 }

Public Types inherited from TObject
enum	{ kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 , kBitMask = 0x00ffffff }

enum	{ kSingleKey = (1ULL << ( 0 )) , kOverwrite = (1ULL << ( 1 )) , kWriteDelete = (1ULL << ( 2 )) }

enum	EDeprecatedStatusBits { kObjInCanvas = (1ULL << ( 3 )) }

enum	EStatusBits { kCanDelete = (1ULL << ( 0 )) , kMustCleanup = (1ULL << ( 3 )) , kIsReferenced = (1ULL << ( 4 )) , kHasUUID = (1ULL << ( 5 )) , kCannotPick = (1ULL << ( 6 )) , kNoContextMenu = (1ULL << ( 8 )) , kInvalidObject = (1ULL << ( 13 )) }

Protected Types inherited from TObject
enum	{ kOnlyPrepStep = (1ULL << ( 3 )) }

Protected Member Functions inherited from TEntryList
void	GetFileName (const char filename, TString &fn, bool =nullptr)
	To be able to re-localize the entry-list we identify the file by just the name and the anchor, i.e.

Protected Member Functions inherited from TObject
virtual void	DoError (int level, const char location, const char fmt, va_list va) const
	Interface to ErrorHandler (protected).

void	MakeZombie ()

#include <TEntryListFromFile.h>

Inheritance diagram for TEntryListFromFile:

[legend]

Constructor & Destructor Documentation

◆ TEntryListFromFile() [1/3]

TEntryListFromFile::TEntryListFromFile ( const TEntryListFromFile & )

private

◆ TEntryListFromFile() [2/3]

TEntryListFromFile::TEntryListFromFile ( )

Definition at line 43 of file TEntryListFromFile.cxx.

◆ TEntryListFromFile() [3/3]

TEntryListFromFile::TEntryListFromFile	(	const char *	filename,
		const char *	listname,
		Int_t	nfiles
	)

File naming convention:

by default, filename_elist.root is used, where filename is the name of the chain element
xxx$xxx.root - $ sign is replaced by the name of the chain element

The TObjArray of chain elements is set by the TEntryListFromFile::SetFileNames() function.

If the list name is not specified, the first object of class TEntryList in the file is taken.

nfiles is the total number of files to process

Definition at line 64 of file TEntryListFromFile.cxx.

◆ ~TEntryListFromFile()

TEntryListFromFile::~TEntryListFromFile ( )

override

d-tor

Definition at line 78 of file TEntryListFromFile.cxx.

Member Function Documentation

◆ Add()

void TEntryListFromFile::Add ( const TEntryList * elist )

inlineoverridevirtual

Add 2 entry lists.

Parameters

[in] elist The list that should be added to the current one.

Note: If you are creating a TEntryList for a TChain and you would like to have a one to one mapping between the sub lists of the TEntryList and the sub trees in the TChain, please do not call this function but use TEntryList::AddSubList instead and pair it with a call to TChain::SetEntryList with option "sync". See the AddSubList function documentation for an example usage. This helps for example in a testing or benchmark scenario where a TChain holds multiple times the same tree in the same file. In that case, this function would not be be able to distinguish different sub entry lists that refer to the same treename and filename. Instead it would create a union of all the sub entry lists into one list.

Reimplemented from TEntryList.

Definition at line 63 of file TEntryListFromFile.h.

◆ Class()

static TClass * TEntryListFromFile::Class ( )

static

Returns: TClass describing this class

◆ Class_Name()

static const char * TEntryListFromFile::Class_Name ( )

static

Returns: Name of this class

◆ Class_Version()

static constexpr Version_t TEntryListFromFile::Class_Version ( )

inlinestaticconstexpr

Returns: Version of this class

Definition at line 97 of file TEntryListFromFile.h.

◆ Contains()

Int_t TEntryListFromFile::Contains	(	Long64_t	entry,
		TTree *	tree
	)

inlineoverridevirtual

When tree = 0, returns from the current list
When tree != 0, finds the list, corresponding to this tree
When tree is a chain, the entry is assumed to be global index and the local entry is recomputed from the treeoffset information of the chain

Reimplemented from TEntryList.

Definition at line 64 of file TEntryListFromFile.h.

◆ DeclFileName()

static const char * TEntryListFromFile::DeclFileName ( )

inlinestatic

Returns: Name of the file containing the class declaration

Definition at line 97 of file TEntryListFromFile.h.

◆ Enter() [1/2]

bool TEntryListFromFile::Enter	(	Long64_t	,
		const char *	,
		const char *
	)

inlineoverridevirtual

Reimplemented from TEntryList.

Definition at line 66 of file TEntryListFromFile.h.

◆ Enter() [2/2]

bool TEntryListFromFile::Enter	(	Long64_t	entry,
		TTree *	tree
	)

inlineoverridevirtual

Add entry #entry to the list.

When tree = 0, adds to the current list
When tree != 0, finds the list, corresponding to this tree
When tree is a chain, the entry is assumed to be global index and the local entry is recomputed from the treeoffset information of the chain

Reimplemented from TEntryList.

Definition at line 65 of file TEntryListFromFile.h.

◆ GetCurrentList()

TEntryList * TEntryListFromFile::GetCurrentList ( ) const

inlineoverridevirtual

Reimplemented from TEntryList.

Definition at line 67 of file TEntryListFromFile.h.

◆ GetEntries()

Long64_t TEntryListFromFile::GetEntries ( )

virtual

Returns the total number of entries in the list.

If some lists have not been loaded, loads them.

Definition at line 166 of file TEntryListFromFile.cxx.

◆ GetEntriesFast()

virtual Long64_t TEntryListFromFile::GetEntriesFast ( ) const

inlinevirtual

Definition at line 73 of file TEntryListFromFile.h.

◆ GetEntry()

Long64_t TEntryListFromFile::GetEntry ( Long64_t index )

overridevirtual

Returns entry #index See also Next() for a faster alternative.

Reimplemented from TEntryList.

Definition at line 90 of file TEntryListFromFile.cxx.

◆ GetEntryAndTree()

Long64_t TEntryListFromFile::GetEntryAndTree	(	Long64_t	index,
		Int_t &	treenum
	)

overridevirtual

Return the entry corresponding to the index parameter and the number of the tree, where this entry is.

Reimplemented from TEntryList.

Definition at line 155 of file TEntryListFromFile.cxx.

◆ GetEntryList()

TEntryList * TEntryListFromFile::GetEntryList	(	const char *	treename,
		const char *	filename,
		Option_t *	opt
	)

inlineoverridevirtual

Return the entry list, corresponding to treename and filename By default, the filename is first tried as is, and then, if the corresponding list is not found, the filename is expanded to the absolute path, and compared again.

To avoid it, use option "ne"

Reimplemented from TEntryList.

Definition at line 68 of file TEntryListFromFile.h.

◆ GetFileName()

const char * TEntryListFromFile::GetFileName ( ) const

inlineoverridevirtual

Reimplemented from TEntryList.

Definition at line 77 of file TEntryListFromFile.h.

◆ GetN()

Long64_t TEntryListFromFile::GetN ( ) const

inlineoverridevirtual

Reimplemented from TEntryList.

Definition at line 75 of file TEntryListFromFile.h.

◆ GetTreeName()

const char * TEntryListFromFile::GetTreeName ( ) const

inlineoverridevirtual

Reimplemented from TEntryList.

Definition at line 76 of file TEntryListFromFile.h.

◆ GetTreeNumber()

Int_t TEntryListFromFile::GetTreeNumber ( ) const

inlineoverridevirtual

Reimplemented from TEntryList.

Definition at line 78 of file TEntryListFromFile.h.

◆ IsA()

TClass * TEntryListFromFile::IsA ( ) const

inlineoverridevirtual

Returns: TClass describing current object

Reimplemented from TEntryList.

Definition at line 97 of file TEntryListFromFile.h.

◆ LoadList()

Int_t TEntryListFromFile::LoadList ( Int_t listnumber )

virtual

Loads the list #listnumber This is the only function that can modify fCurrent and fFile data members.

Definition at line 231 of file TEntryListFromFile.cxx.

◆ Merge()

Int_t TEntryListFromFile::Merge ( TCollection * list )

inlineoverridevirtual

Merge this list with the lists from the collection.

Reimplemented from TEntryList.

Definition at line 82 of file TEntryListFromFile.h.

◆ Next()

Long64_t TEntryListFromFile::Next ( )

overridevirtual

Returns the next entry in the list.

Faster than GetEntry()

Reimplemented from TEntryList.

Definition at line 184 of file TEntryListFromFile.cxx.

◆ operator=()

TEntryListFromFile & TEntryListFromFile::operator= ( const TEntryListFromFile & )

private

◆ OptimizeStorage()

void TEntryListFromFile::OptimizeStorage ( )

inlineoverridevirtual

Checks if the array representation is more economical and if so, switches to it.

Reimplemented from TEntryList.

Definition at line 85 of file TEntryListFromFile.h.

◆ Print()

void TEntryListFromFile::Print ( const Option_t * option = "" ) const

override

Print info about this list.

Definition at line 305 of file TEntryListFromFile.cxx.

◆ Remove()

bool TEntryListFromFile::Remove	(	Long64_t	entry,
		TTree *	tree
	)

inlineoverridevirtual

Remove entry #entry from the list.

When tree = 0, removes from the current list
When tree != 0, finds the list, corresponding to this tree
When tree is a chain, the entry is assumed to be global index and the local entry is recomputed from the treeoffset information of the chain

Reimplemented from TEntryList.

Definition at line 86 of file TEntryListFromFile.h.

◆ SetFileNames()

virtual void TEntryListFromFile::SetFileNames ( TObjArray * names )

inlinevirtual

Definition at line 92 of file TEntryListFromFile.h.

◆ SetNFiles()

virtual void TEntryListFromFile::SetNFiles ( Int_t nfiles )

inlinevirtual

Definition at line 94 of file TEntryListFromFile.h.

◆ SetTree() [1/2]

void TEntryListFromFile::SetTree	(	const char *	treename,
		const char *	filename
	)

inlineoverridevirtual

If a list for a tree with such name and filename exists, sets it as the current sublist If not, creates this list and sets it as the current sublist.

! the filename is taken as provided, no extensions to full path or url !

Reimplemented from TEntryList.

Definition at line 91 of file TEntryListFromFile.h.

◆ SetTree() [2/2]

void TEntryListFromFile::SetTree ( const TTree * tree )

inlineoverridevirtual

If a list for a tree with such name and filename exists, sets it as the current sublist If not, creates this list and sets it as the current sublist The name of the file, where the tree is, is taken as tree->GetTree()->GetCurrentFile()->GetName(), and then expanded either to the absolute path, or to full url.

If, for some reason, you want to provide the filename in a different format, use SetTree(const char *treename, const char *filename), where the filename is taken "as is".

Reimplemented from TEntryList.

Definition at line 90 of file TEntryListFromFile.h.

◆ SetTreeNumber()

void TEntryListFromFile::SetTreeNumber ( Int_t index )

inlineoverridevirtual

Reimplemented from TEntryList.

Definition at line 93 of file TEntryListFromFile.h.

◆ Streamer()

void TEntryListFromFile::Streamer ( TBuffer & b )

overridevirtual

Custom streamer for class TEntryList to handle the different interpretation of fFileName between version 1 and >1 .

Reimplemented from TEntryList.

◆ StreamerNVirtual()

void TEntryListFromFile::StreamerNVirtual ( TBuffer & ClassDef_StreamerNVirtual_b )

inline

Definition at line 97 of file TEntryListFromFile.h.

◆ Subtract()

void TEntryListFromFile::Subtract ( const TEntryList * elist )

inlineoverridevirtual

Remove all the entries of this entry list, that are contained in elist.

Reimplemented from TEntryList.

Definition at line 95 of file TEntryListFromFile.h.

Member Data Documentation

◆ fFile

TFile* TEntryListFromFile::fFile

protected

currently open file fCurrent points to the currently open list

Definition at line 47 of file TEntryListFromFile.h.

◆ fFileNames

TObjArray* TEntryListFromFile::fFileNames

protected

! points to the fFiles data member of the corresponding chain

Definition at line 49 of file TEntryListFromFile.h.

◆ fListFileName

TString TEntryListFromFile::fListFileName

protected

from this string names of all files can be found

Definition at line 43 of file TEntryListFromFile.h.

◆ fListName

TString TEntryListFromFile::fListName

protected

name of the list

Definition at line 44 of file TEntryListFromFile.h.

◆ fListOffset

Long64_t* TEntryListFromFile::fListOffset

protected

[fNFiles] numbers of entries in ind. lists

Definition at line 46 of file TEntryListFromFile.h.

◆ fNFiles

Int_t TEntryListFromFile::fNFiles

protected

total number of files

Definition at line 45 of file TEntryListFromFile.h.

◆ kBigNumber

constexpr auto TEntryListFromFile::kBigNumber = std::numeric_limits<Long64_t>::max()

staticconstexprprotected

Definition at line 52 of file TEntryListFromFile.h.

Libraries for TEntryListFromFile:

[legend]

The documentation for this class was generated from the following files:

tree/tree/inc/TEntryListFromFile.h
tree/tree/src/TEntryListFromFile.cxx

Public Member Functions

Static Public Member Functions

Protected Attributes

Static Protected Attributes

Private Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

◆ TEntryListFromFile() [1/3]

◆ TEntryListFromFile() [2/3]

◆ TEntryListFromFile() [3/3]

◆ ~TEntryListFromFile()

Member Function Documentation

◆ Add()

◆ Class()

◆ Class_Name()

◆ Class_Version()

◆ Contains()

◆ DeclFileName()

◆ Enter() [1/2]

◆ Enter() [2/2]

◆ GetCurrentList()

◆ GetEntries()

◆ GetEntriesFast()

◆ GetEntry()

◆ GetEntryAndTree()

◆ GetEntryList()

◆ GetFileName()

◆ GetN()

◆ GetTreeName()

◆ GetTreeNumber()

◆ IsA()

◆ LoadList()

◆ Merge()

◆ Next()

◆ operator=()

◆ OptimizeStorage()

◆ Print()

◆ Remove()

◆ SetFileNames()

◆ SetNFiles()

◆ SetTree() [1/2]

◆ SetTree() [2/2]

◆ SetTreeNumber()

◆ Streamer()

◆ StreamerNVirtual()

◆ Subtract()

Member Data Documentation

◆ fFile

◆ fFileNames

◆ fListFileName

◆ fListName

◆ fListOffset

◆ fNFiles

◆ kBigNumber