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TEntryListFromFile Class Reference

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.
 
TEntryListGetCurrentList () 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.
 
TEntryListGetEntryList (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
 
TClassIsA () 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 TDirectoryGetDirectory () const
 
virtual Long64_t GetEntriesToProcess () const
 
virtual TListGetLists () 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 ("").
 
TObjectClone (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.
 
TClassIsA () const override
 
Bool_t IsSortable () const override
 
void ls (Option_t *option="") const override
 List TNamed name and title.
 
TNamedoperator= (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 TObjectDrawClone (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 TObjectFindObject (const char *name) const
 Must be redefined in derived classes.
 
virtual TObjectFindObject (const TObject *obj) const
 Must be redefined in derived classes.
 
virtual Option_tGetDrawOption () 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_tGetOption () 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)
 
TObjectoperator= (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 TClassClass ()
 
static const char * Class_Name ()
 
static constexpr Version_t Class_Version ()
 
static const char * DeclFileName ()
 
- Static Public Member Functions inherited from TEntryList
static TClassClass ()
 
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 TClassClass ()
 
static const char * Class_Name ()
 
static constexpr Version_t Class_Version ()
 
static const char * DeclFileName ()
 
- Static Public Member Functions inherited from TObject
static TClassClass ()
 
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

TFilefFile
 currently open file fCurrent points to the currently open list
 
TObjArrayfFileNames
 ! 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_tfListOffset
 [fNFiles] numbers of entries in ind. lists
 
Int_t fNFiles
 total number of files
 
- Protected Attributes inherited from TEntryList
TObjArrayfBlocks
 blocks with indices of passing events (TEntryListBlocks)
 
TEntryListfCurrent
 ! currently filled entry list
 
TDirectoryfDirectory
 ! 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
 
TListfLists
 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 &)
 
TEntryListFromFileoperator= (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]elistThe 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:

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