TXMLFile Class Reference

Definition at line 25 of file TXMLFile.h.

Public Member Functions
	TXMLFile ()
	default TXMLFile constructor More...
	TXMLFile (const char *filename, Option_t *option="read", const char *title="title", Int_t compression=ROOT::RCompressionSetting::EDefaults::kUseGeneralPurpose)
	Open or creates local XML file with name filename. More...
virtual	~TXMLFile ()
	destructor of TXMLFile object More...
Bool_t	AddXmlComment (const char *comment)
	Add comment line on the top of the xml document This line can only be seen in xml editor and cannot be accessed later with TXMLFile methods. More...
Bool_t	AddXmlLine (const char *line)
	Add just one line on the top of xml document For instance, line can contain special xml processing instructions Line should has correct xml syntax that later it can be decoded by xml parser To be parsed later by TXMLFile again, this line should contain either xml comments or xml processing instruction. More...
Bool_t	AddXmlStyleSheet (const char *href, const char *type="text/css", const char *title=0, int alternate=-1, const char *media=0, const char *charset=0)
	Adds style sheet definition on the top of xml document Creates <?xml-stylesheet alternate="yes" title="compact" href="small-base.css" type="text/css"?> Attributes href and type must be supplied, other attributes: title, alternate, media, charset are optional if alternate==0, attribute alternate="no" will be created, if alternate>0, attribute alternate="yes" if alternate<0, attribute will not be created This style sheet definition cannot be later access with TXMLFile methods. More...
virtual void	Close (Option_t *option="")
	Close a XML file For more comments see TFile::Close() function. More...
virtual TKey *	CreateKey (TDirectory *mother, const TObject *obj, const char *name, Int_t bufsize)
	create XML key, which will store object in xml structures More...
virtual TKey *	CreateKey (TDirectory *mother, const void *obj, const TClass *cl, const char *name, Int_t bufsize)
	create XML key, which will store object in xml structures More...
virtual void	DrawMap (const char *="*", Option_t *="")
	Draw map of objects in this file. More...
virtual void	FillBuffer (char *&)
	Encode file output buffer. More...
virtual void	Flush ()
	Synchronize a file's in-memory and on-disk states. More...
virtual Long64_t	GetEND () const
virtual Int_t	GetErrno () const
	Method returning errno. Is overriden in TRFIOFile. More...
Int_t	GetIOVersion () const
virtual Int_t	GetNbytesFree () const
virtual Int_t	GetNbytesInfo () const
virtual Int_t	GetNfree () const
virtual Long64_t	GetSeekFree () const
virtual Long64_t	GetSeekInfo () const
virtual Long64_t	GetSize () const
	Returns the current file size. More...
virtual Bool_t	IsOpen () const
	return kTRUE if file is opened and can be accessed More...
virtual void	MakeFree (Long64_t, Long64_t)
	Mark unused bytes on the file. More...
virtual void	MakeProject (const char *, const char *="*", Option_t *="new")
	Generate source code necessary to access the objects stored in the file. More...
virtual void	Map ()
virtual void	Map (Option_t *)
	List the contents of a file sequentially. More...
virtual void	Paint (Option_t *="")
	Paint all objects in the file. More...
virtual void	Print (Option_t *="") const
	Print all objects in the file. More...
virtual Bool_t	ReadBuffer (char *, Int_t)
	Read a buffer from the file. More...
virtual Bool_t	ReadBuffer (char *, Long64_t, Int_t)
	Read a buffer from the file at the offset 'pos' in the file. More...
virtual void	ReadFree ()
	Read the FREE linked list. More...
virtual Int_t	Recover ()
	Attempt to recover file if not correctly closed. More...
virtual Int_t	ReOpen (Option_t *mode)
	Reopen a file with a different access mode, like from READ to See TFile::Open() for details. More...
virtual void	ResetErrno () const
	Method resetting the errno. Is overridden in TRFIOFile. More...
virtual void	Seek (Long64_t, ERelativeTo=kBeg)
	Seek to a specific position in the file. Pos it either kBeg, kCur or kEnd. More...
virtual void	SetEND (Long64_t)
virtual void	SetStoreStreamerInfos (Bool_t iConvert=kTRUE)
	If true, all correspondent to file TStreamerInfo objects will be stored in file this allows to apply schema evolution later for this file may be useful, when file used outside ROOT and TStreamerInfo objects does not required Can be changed only for newly created file. More...
virtual void	SetUsedDtd (Bool_t use=kTRUE)
	Specify usage of DTD for this file. More...
virtual void	SetUseNamespaces (Bool_t iUseNamespaces=kTRUE)
	Specify usage of namespaces in xml file In current implementation every instrumented class in file gets its unique namespace, which is equal to name of class and refer to root documentation page like <TAttPad xmlns:TAttPad="http://root.cern.ch/root/htmldoc/TAttPad.html" version="3"> And xml node for class member gets its name as combination of class name and member name <TAttPad:fLeftMargin v="0.100000"/> <TAttPad:fRightMargin v="0.100000"/> <TAttPad:fBottomMargin v="0.100000"/> and so on Usage of namespace increase size of xml file, but makes file more readable and allows to produce DTD in the case, when in several classes data member has same name Can be changed only for newly created file. More...
virtual void	SetXmlLayout (EXMLLayout layout)
	Change layout of objects in xml file Can be changed only for newly created file. More...
virtual Int_t	Sizeof () const
	Return the size in bytes of the file header. More...
virtual Int_t	Write (const char *=0, Int_t=0, Int_t=0)
	Write memory objects to this file. More...
virtual Int_t	Write (const char *=0, Int_t=0, Int_t=0) const
	One can not save a const TDirectory object. More...
virtual Bool_t	WriteBuffer (const char *, Int_t)
	Write a buffer to the file. More...
virtual void	WriteFree ()
	Write FREE linked list on the file. More...
virtual void	WriteHeader ()
	Write File Header. More...
virtual void	WriteStreamerInfo ()
	convert all TStreamerInfo, used in file, to xml format More...
TXMLEngine *	XML ()
Public Member Functions inherited from TFile
	TFile ()
	File default Constructor. More...
	TFile (const char *fname, Option_t *option="", const char *ftitle="", Int_t compress=ROOT::RCompressionSetting::EDefaults::kUseGeneralPurpose)
	Opens or creates a local ROOT file. More...
virtual	~TFile ()
	File destructor. More...
virtual void	Close (Option_t *option="")
	Close a file. More...
virtual void	Copy (TObject &) const
	Copy this to obj. More...
virtual Bool_t	Cp (const char *dst, Bool_t progressbar=kTRUE, UInt_t buffersize=1000000)
	Allows to copy this file to the dst URL. More...
virtual TKey *	CreateKey (TDirectory *mother, const TObject *obj, const char *name, Int_t bufsize)
	Creates key for object and converts data to buffer. More...
virtual TKey *	CreateKey (TDirectory *mother, const void *obj, const TClass *cl, const char *name, Int_t bufsize)
	Creates key for object and converts data to buffer. More...
virtual void	Delete (const char *namecycle="")
	Delete object namecycle. More...
virtual void	Draw (Option_t *option="")
	Fill Graphics Structure and Paint. More...
virtual void	DrawMap (const char *keys="*", Option_t *option="")
	Draw map of objects in this file. More...
virtual void	FillBuffer (char *&buffer)
	Encode file output buffer. More...
virtual void	Flush ()
	Synchronize a file's in-memory and on-disk states. More...
TArchiveFile *	GetArchive () const
Long64_t	GetArchiveOffset () const
Int_t	GetBestBuffer () const
	Return the best buffer size of objects on this file. More...
virtual Long64_t	GetBytesRead () const
virtual Long64_t	GetBytesReadExtra () const
virtual Int_t	GetBytesToPrefetch () const
	Max number of bytes to prefetch. More...
virtual Long64_t	GetBytesWritten () const
	Return the total number of bytes written so far to the file. More...
TFileCacheRead *	GetCacheRead (const TObject *tree=0) const
	Return a pointer to the current read cache. More...
TFileCacheWrite *	GetCacheWrite () const
	Return a pointer to the current write cache. More...
TArrayC *	GetClassIndex () const
Int_t	GetCompressionAlgorithm () const
Float_t	GetCompressionFactor ()
	Return the file compression factor. More...
Int_t	GetCompressionLevel () const
Int_t	GetCompressionSettings () const
virtual Long64_t	GetEND () const
virtual const TUrl *	GetEndpointUrl () const
virtual Int_t	GetErrno () const
	Method returning errno. Is overriden in TRFIOFile. More...
Int_t	GetFd () const
TList *	GetListOfFree () const
TObjArray *	GetListOfProcessIDs () const
virtual Int_t	GetNbytesFree () const
virtual Int_t	GetNbytesInfo () const
virtual TString	GetNewUrl ()
virtual Int_t	GetNfree () const
virtual Int_t	GetNProcessIDs () const
Option_t *	GetOption () const
virtual Int_t	GetReadCalls () const
Int_t	GetRecordHeader (char *buf, Long64_t first, Int_t maxbytes, Int_t &nbytes, Int_t &objlen, Int_t &keylen)
	Read the logical record header starting at a certain postion. More...
Long64_t	GetRelOffset () const
virtual Long64_t	GetSeekFree () const
virtual Long64_t	GetSeekInfo () const
virtual Long64_t	GetSize () const
	Returns the current file size. More...
const TList *	GetStreamerInfoCache ()
	Returns the cached list of StreamerInfos used in this file. More...
virtual TList *	GetStreamerInfoList () final
	Read the list of TStreamerInfo objects written to this file. More...
Int_t	GetVersion () const
virtual void	IncrementProcessIDs ()
virtual Bool_t	IsArchive () const
Bool_t	IsBinary () const
virtual Bool_t	IsOpen () const
	Returns kTRUE in case file is open and kFALSE if file is not open. More...
Bool_t	IsRaw () const
virtual void	ls (Option_t *option="") const
	List file contents. More...
virtual void	MakeFree (Long64_t first, Long64_t last)
	Mark unused bytes on the file. More...
virtual void	MakeProject (const char *dirname, const char *classes="*", Option_t *option="new")
	Generate source code necessary to access the objects stored in the file. More...
virtual void	Map ()
virtual void	Map (Option_t *opt)
	List the contents of a file sequentially. More...
virtual Bool_t	Matches (const char *name)
	Return kTRUE if 'url' matches the coordinates of this file. More...
virtual Bool_t	MustFlush () const
virtual void	Paint (Option_t *option="")
	Paint all objects in the file. More...
virtual void	Print (Option_t *option="") const
	Print all objects in the file. More...
virtual Bool_t	ReadBuffer (char *buf, Int_t len)
	Read a buffer from the file. More...
virtual Bool_t	ReadBuffer (char *buf, Long64_t pos, Int_t len)
	Read a buffer from the file at the offset 'pos' in the file. More...
virtual Bool_t	ReadBufferAsync (Long64_t offs, Int_t len)
virtual Bool_t	ReadBuffers (char *buf, Long64_t *pos, Int_t *len, Int_t nbuf)
	Read the nbuf blocks described in arrays pos and len. More...
virtual void	ReadFree ()
	Read the FREE linked list. More...
virtual TProcessID *	ReadProcessID (UShort_t pidf)
	The TProcessID with number pidf is read from this file. More...
virtual void	ReadStreamerInfo ()
	Read the list of StreamerInfo from this file. More...
virtual Int_t	Recover ()
	Attempt to recover file if not correctly closed. More...
virtual Int_t	ReOpen (Option_t *mode)
	Reopen a file with a different access mode. More...
virtual void	ResetErrno () const
	Method resetting the errno. Is overridden in TRFIOFile. More...
virtual void	Seek (Long64_t offset, ERelativeTo pos=kBeg)
	Seek to a specific position in the file. Pos it either kBeg, kCur or kEnd. More...
virtual void	SetCacheRead (TFileCacheRead *cache, TObject *tree=0, ECacheAction action=kDisconnect)
	Set a pointer to the read cache. More...
virtual void	SetCacheWrite (TFileCacheWrite *cache)
	Set a pointer to the write cache. More...
virtual void	SetCompressionAlgorithm (Int_t algorithm=ROOT::RCompressionSetting::EAlgorithm::kUseGlobal)
	See comments for function SetCompressionSettings. More...
virtual void	SetCompressionLevel (Int_t level=ROOT::RCompressionSetting::ELevel::kUseMin)
	See comments for function SetCompressionSettings. More...
virtual void	SetCompressionSettings (Int_t settings=ROOT::RCompressionSetting::EDefaults::kUseGeneralPurpose)
	Used to specify the compression level and algorithm. More...
virtual void	SetEND (Long64_t last)
virtual void	SetOffset (Long64_t offset, ERelativeTo pos=kBeg)
	Set position from where to start reading. More...
virtual void	SetOption (Option_t *option=">")
virtual void	SetReadCalls (Int_t readcalls=0)
virtual void	ShowStreamerInfo ()
	Show the StreamerInfo of all classes written to this file. More...
virtual Int_t	Sizeof () const
	Return the size in bytes of the file header. More...
void	SumBuffer (Int_t bufsize)
	Increment statistics for buffer sizes of objects in this file. More...
virtual Int_t	Write (const char *name=0, Int_t opt=0, Int_t bufsiz=0)
	Write memory objects to this file. More...
virtual Int_t	Write (const char *name=0, Int_t opt=0, Int_t bufsiz=0) const
	One can not save a const TDirectory object. More...
virtual Bool_t	WriteBuffer (const char *buf, Int_t len)
	Write a buffer to the file. More...
virtual void	WriteFree ()
	Write FREE linked list on the file. More...
virtual void	WriteHeader ()
	Write File Header. More...
virtual UShort_t	WriteProcessID (TProcessID *pid)
	Check if the ProcessID pidd is already in the file, if not, add it and return the index number in the local file list. More...
virtual void	WriteStreamerInfo ()
	Write the list of TStreamerInfo as a single object in this file The class Streamer description for all classes written to this file is saved. More...
Public Member Functions inherited from TDirectoryFile
	TDirectoryFile ()
	Default Constructor. More...
	TDirectoryFile (const char *name, const char *title, Option_t *option="", TDirectory *motherDir=0)
	Create a new TDirectoryFile. More...
virtual	~TDirectoryFile ()
	Destructor. More...
void	Add (TObject *obj, Bool_t replace=kFALSE)
virtual void	Append (TObject *obj, Bool_t replace=kFALSE)
	Append object to this directory. More...
Int_t	AppendKey (TKey *key)
	Insert key in the linked list of keys of this directory. More...
virtual void	Browse (TBrowser *b)
	Browse the content of the directory. More...
void	Build (TFile *motherFile=0, TDirectory *motherDir=0)
	Initialise directory to defaults. More...
virtual Bool_t	cd (const char *path=0)
	Change current directory to "this" directory. More...
virtual TObject *	CloneObject (const TObject *obj, Bool_t autoadd=kTRUE)
	Make a clone of an object using the Streamer facility. More...
virtual void	Close (Option_t *option="")
	Delete all objects from memory and directory structure itself. More...
virtual void	Copy (TObject &) const
	Copy this to obj. More...
virtual void	Delete (const char *namecycle="")
	Delete Objects or/and keys in a directory. More...
virtual void	FillBuffer (char *&buffer)
	Encode directory header into output buffer. More...
virtual TKey *	FindKey (const char *keyname) const
	Find key with name keyname in the current directory. More...
virtual TKey *	FindKeyAny (const char *keyname) const
	Find key with name keyname in the current directory or its subdirectories. More...
virtual TObject *	FindObjectAny (const char *name) const
	Find object by name in the list of memory objects of the current directory or its sub-directories. More...
virtual TObject *	FindObjectAnyFile (const char *name) const
	Scan the memory lists of all files for an object with name. More...
virtual TObject *	Get (const char *namecycle)
	Return pointer to object identified by namecycle. More...
virtual Int_t	GetBufferSize () const
	Return the buffer size to create new TKeys. More...
const TDatime &	GetCreationDate () const
virtual TDirectory *	GetDirectory (const char *apath, Bool_t printError=false, const char *funcname="GetDirectory")
	Find a directory named "apath". More...
virtual TFile *	GetFile () const
virtual TKey *	GetKey (const char *name, Short_t cycle=9999) const
	Return pointer to key with name,cycle. More...
virtual TList *	GetListOfKeys () const
const TDatime &	GetModificationDate () const
virtual Int_t	GetNbytesKeys () const
virtual Int_t	GetNkeys () const
template<class T >
void	GetObject (const char *namecycle, T *&ptr)
virtual void *	GetObjectChecked (const char *namecycle, const char *classname)
	See documentation of TDirectoryFile::GetObjectCheck(const char *namecycle, const TClass *cl) More...
virtual void *	GetObjectChecked (const char *namecycle, const TClass *cl)
	Return pointer to object identified by namecycle if and only if the actual object is a type suitable to be stored as a pointer to a "expectedClass" If expectedClass is null, no check is performed. More...
virtual void *	GetObjectUnchecked (const char *namecycle)
	Return pointer to object identified by namecycle. More...
virtual Long64_t	GetSeekDir () const
virtual Long64_t	GetSeekKeys () const
virtual Long64_t	GetSeekParent () const
Bool_t	IsModified () const
Bool_t	IsWritable () const
virtual void	ls (Option_t *option="") const
	List Directory contents. More...
virtual TDirectory *	mkdir (const char *name, const char *title="")
	Create a sub-directory "a" or a hierarchy of sub-directories "a/b/c/...". More...
virtual TFile *	OpenFile (const char *name, Option_t *option="", const char *ftitle="", Int_t compress=ROOT::RCompressionSetting::EDefaults::kUseGeneralPurpose, Int_t netopt=0)
	Interface to TFile::Open. More...
virtual void	Purge (Short_t nkeep=1)
	Purge lowest key cycles in a directory. More...
virtual void	ReadAll (Option_t *option="")
	Read objects from a ROOT file directory into memory. More...
virtual Int_t	ReadKeys (Bool_t forceRead=kTRUE)
	Read the linked list of keys. More...
virtual Int_t	ReadTObject (TObject *obj, const char *keyname)
	Read object with keyname from the current directory. More...
virtual void	ResetAfterMerge (TFileMergeInfo *)
	Reset the TDirectory after its content has been merged into another Directory. More...
virtual void	rmdir (const char *name)
	Removes subdirectory from the directory. More...
virtual void	Save ()
	Save recursively all directory keys and headers. More...
virtual Int_t	SaveObjectAs (const TObject *obj, const char *filename="", Option_t *option="") const
	Save object in filename. More...
virtual void	SaveSelf (Bool_t force=kFALSE)
	Save Directory keys and header. More...
virtual void	SetBufferSize (Int_t bufsize)
	Set the default buffer size when creating new TKeys. More...
void	SetModified ()
void	SetSeekDir (Long64_t v)
virtual void	SetTRefAction (TObject *ref, TObject *parent)
	Find the action to be executed in the dictionary of the parent class and store the corresponding exec number into fBits. More...
void	SetWritable (Bool_t writable=kTRUE)
	Set the new value of fWritable recursively. More...
virtual Int_t	Sizeof () const
	Return the size in bytes of the directory header. More...
virtual Int_t	Write (const char *name=0, Int_t opt=0, Int_t bufsize=0)
	Write all objects in memory to disk. More...
virtual Int_t	Write (const char *name=0, Int_t opt=0, Int_t bufsize=0) const
	One can not save a const TDirectory object. More...
virtual void	WriteDirHeader ()
	Overwrite the Directory header record. More...
virtual void	WriteKeys ()
	Write Keys linked list on the file. More...
virtual Int_t	WriteObjectAny (const void *obj, const char *classname, const char *name, Option_t *option="", Int_t bufsize=0)
	Write object from pointer of class classname in this directory. More...
virtual Int_t	WriteObjectAny (const void *obj, const TClass *cl, const char *name, Option_t *option="", Int_t bufsize=0)
	Write object of class with dictionary cl in this directory. More...
virtual Int_t	WriteTObject (const TObject *obj, const char *name=0, Option_t *option="", Int_t bufsize=0)
	Write object obj to this directory. More...
Public Member Functions inherited from TDirectory
	TDirectory ()
	Directory default constructor. More...
	TDirectory (const char *name, const char *title, Option_t *option="", TDirectory *motherDir=0)
	Create a new Directory. More...
virtual	~TDirectory ()
	Destructor. More...
virtual void	Add (TObject *obj, Bool_t replace=kFALSE)
virtual void	Append (TObject *obj, Bool_t replace=kFALSE)
	Append object to this directory. More...
virtual Int_t	AppendKey (TKey *)
virtual void	Browse (TBrowser *b)
	Browse the content of the directory. More...
virtual void	Build (TFile *motherFile=0, TDirectory *motherDir=0)
	Initialise directory to defaults. More...
virtual Bool_t	cd (const char *path=0)
	Change current directory to "this" directory. More...
virtual void	Clear (Option_t *option="")
	Delete all objects from a Directory list. More...
virtual TObject *	CloneObject (const TObject *obj, Bool_t autoadd=kTRUE)
	Clone an object. More...
virtual void	Close (Option_t *option="")
	Delete all objects from memory and directory structure itself. More...
virtual void	Copy (TObject &) const
	Copy this to obj. More...
virtual void	Delete (const char *namecycle="")
	Delete Objects or/and keys in a directory. More...
virtual void	DeleteAll (Option_t *option="")
	Delete all objects from memory. More...
virtual void	Draw (Option_t *option="")
	Fill Graphics Structure and Paint. More...
virtual TKey *	FindKey (const char *) const
virtual TKey *	FindKeyAny (const char *) const
virtual TObject *	FindObject (const char *name) const
	Find object by name in the list of memory objects. More...
virtual TObject *	FindObject (const TObject *obj) const
	Find object in the list of memory objects. More...
virtual TObject *	FindObjectAny (const char *name) const
	Find object by name in the list of memory objects of the current directory or its sub-directories. More...
virtual TObject *	FindObjectAnyFile (const char *) const
virtual TObject *	Get (const char *namecycle)
	Return pointer to object identified by namecycle. More...
virtual Int_t	GetBufferSize () const
virtual TDirectory *	GetDirectory (const char *namecycle, Bool_t printError=false, const char *funcname="GetDirectory")
	Find a directory using apath. More...
virtual TFile *	GetFile () const
virtual TKey *	GetKey (const char *, Short_t=9999) const
virtual TList *	GetList () const
virtual TList *	GetListOfKeys () const
virtual TObject *	GetMother () const
virtual TDirectory *	GetMotherDir () const
virtual Int_t	GetNbytesKeys () const
virtual Int_t	GetNkeys () const
template<class T >
void	GetObject (const char *namecycle, T *&ptr)
virtual void *	GetObjectChecked (const char *namecycle, const char *classname)
	See documentation of TDirectory::GetObjectCheck(const char *namecycle, const TClass *cl) More...
virtual void *	GetObjectChecked (const char *namecycle, const TClass *cl)
	Return pointer to object identified by namecycle if and only if the actual object is a type suitable to be stored as a pointer to a "expectedClass" If expectedClass is null, no check is performed. More...
virtual void *	GetObjectUnchecked (const char *namecycle)
	Return pointer to object identified by namecycle. More...
virtual const char *	GetPath () const
	Returns the full path of the directory. More...
virtual const char *	GetPathStatic () const
	Returns the full path of the directory. More...
virtual Long64_t	GetSeekDir () const
virtual Long64_t	GetSeekKeys () const
virtual Long64_t	GetSeekParent () const
TUUID	GetUUID () const
virtual Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...
virtual Bool_t	IsModified () const
virtual Bool_t	IsWritable () const
virtual void	ls (Option_t *option="") const
	List Directory contents. More...
virtual TDirectory *	mkdir (const char *name, const char *title="")
	Create a sub-directory "a" or a hierarchy of sub-directories "a/b/c/...". More...
virtual TFile *	OpenFile (const char *, Option_t *="", const char *="", Int_t=1, Int_t=0)
virtual void	Paint (Option_t *option="")
	Paint all objects in the directory. More...
virtual void	Print (Option_t *option="") const
	Print all objects in the directory. More...
virtual void	Purge (Short_t=1)
virtual void	pwd () const
	Print the path of the directory. More...
virtual void	ReadAll (Option_t *="")
virtual Int_t	ReadKeys (Bool_t=kTRUE)
virtual Int_t	ReadTObject (TObject *, const char *)
virtual void	RecursiveRemove (TObject *obj)
	Recursively remove object from a Directory. More...
virtual TObject *	Remove (TObject *)
	Remove an object from the in-memory list. More...
virtual void	rmdir (const char *name)
	Removes subdirectory from the directory When directory is deleted, all keys in all subdirectories will be read first and deleted from file (if exists) Equivalent call is Delete("name;*");. More...
virtual void	Save ()
virtual Int_t	SaveObjectAs (const TObject *, const char *="", Option_t *="") const
	Save object in filename, if filename is 0 or "", a file with "objectname.root" is created. More...
virtual void	SaveSelf (Bool_t=kFALSE)
virtual void	SetBufferSize (Int_t)
virtual void	SetModified ()
virtual void	SetMother (TObject *mother)
virtual void	SetName (const char *newname)
	Set the name for directory If the directory name is changed after the directory was written once, ROOT currently would NOT change the name of correspondent key in the mother directory. More...
virtual void	SetSeekDir (Long64_t)
virtual void	SetTRefAction (TObject *, TObject *)
virtual void	SetWritable (Bool_t)
virtual Int_t	Sizeof () const
	Return size of the TNamed part of the TObject. More...
virtual Int_t	Write (const char *=0, Int_t=0, Int_t=0)
	Write this object to the current directory. More...
virtual Int_t	Write (const char *=0, Int_t=0, Int_t=0) const
	Write this object to the current directory. More...
virtual void	WriteDirHeader ()
virtual void	WriteKeys ()
template<class T >
Int_t	WriteObject (const T *obj, const char *name, Option_t *option="", Int_t bufsize=0)
virtual Int_t	WriteObjectAny (const void *, const char *, const char *, Option_t *="", Int_t=0)
virtual Int_t	WriteObjectAny (const void *, const TClass *, const char *, Option_t *="", Int_t=0)
virtual Int_t	WriteTObject (const TObject *obj, const char *name=0, Option_t *="", Int_t=0)
	See TDirectoryFile::WriteTObject for details. More...
Public Member Functions inherited from TNamed
	TNamed ()
	TNamed (const char *name, const char *title)
	TNamed (const TNamed &named)
	TNamed copy ctor. More...
	TNamed (const TString &name, const TString &title)
virtual	~TNamed ()
	TNamed destructor. More...
virtual void	Clear (Option_t *option="")
	Set name and title to empty strings (""). More...
virtual TObject *	Clone (const char *newname="") const
	Make a clone of an object using the Streamer facility. More...
virtual Int_t	Compare (const TObject *obj) const
	Compare two TNamed objects. More...
virtual void	Copy (TObject &named) const
	Copy this to obj. More...
virtual void	FillBuffer (char *&buffer)
	Encode TNamed into output buffer. More...
virtual const char *	GetName () const
	Returns name of object. More...
virtual const char *	GetTitle () const
	Returns title of object. More...
virtual ULong_t	Hash () const
	Return hash value for this object. More...
virtual Bool_t	IsSortable () const
virtual void	ls (Option_t *option="") const
	List TNamed name and title. More...
TNamed &	operator= (const TNamed &rhs)
	TNamed assignment operator. More...
virtual void	Print (Option_t *option="") const
	Print TNamed name and title. More...
virtual void	SetName (const char *name)
	Set the name of the TNamed. More...
virtual void	SetNameTitle (const char *name, const char *title)
	Set all the TNamed parameters (name and title). More...
virtual void	SetTitle (const char *title="")
	Set the title of the TNamed. More...
virtual Int_t	Sizeof () const
	Return size of the TNamed part of the TObject. More...
Public Member Functions inherited from TObject
	TObject ()
	TObject constructor. More...
	TObject (const TObject &object)
	TObject copy ctor. More...
virtual	~TObject ()
	TObject destructor. More...
void	AbstractMethod (const char *method) const
	Use this method to implement an "abstract" method that you don't want to leave purely abstract. More...
virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad. More...
virtual void	Browse (TBrowser *b)
	Browse object. May be overridden for another default action. More...
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. More...
virtual const char *	ClassName () const
	Returns name of class to which the object belongs. More...
virtual void	Clear (Option_t *="")
virtual TObject *	Clone (const char *newname="") const
	Make a clone of an object using the Streamer facility. More...
virtual Int_t	Compare (const TObject *obj) const
	Compare abstract method. More...
virtual void	Copy (TObject &object) const
	Copy this to obj. More...
virtual void	Delete (Option_t *option="")
	Delete this object. More...
virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object. More...
virtual void	Draw (Option_t *option="")
	Default Draw method for all objects. More...
virtual void	DrawClass () const
	Draw class inheritance tree of the class to which this object belongs. More...
virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad for instance with: gROOT->SetSelectedPad(gPad). More...
virtual void	Dump () const
	Dump contents of object on stdout. More...
virtual void	Error (const char *method, const char *msgfmt,...) const
	Issue error message. More...
virtual void	Execute (const char *method, const char *params, Int_t *error=0)
	Execute method on this object with the given parameter string, e.g. More...
virtual void	Execute (TMethod *method, TObjArray *params, Int_t *error=0)
	Execute method on this object with parameters stored in the TObjArray. More...
virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py). More...
virtual void	Fatal (const char *method, const char *msgfmt,...) const
	Issue fatal error message. More...
virtual TObject *	FindObject (const char *name) const
	Must be redefined in derived classes. More...
virtual TObject *	FindObject (const TObject *obj) const
	Must be redefined in derived classes. More...
virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object. More...
virtual const char *	GetIconName () const
	Returns mime type name of object. More...
virtual const char *	GetName () const
	Returns name of object. More...
virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py). More...
virtual Option_t *	GetOption () const
virtual const char *	GetTitle () const
	Returns title of object. More...
virtual UInt_t	GetUniqueID () const
	Return the unique object id. More...
virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out. More...
virtual ULong_t	Hash () const
	Return hash value for this object. More...
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. More...
virtual void	Info (const char *method, const char *msgfmt,...) const
	Issue info message. More...
virtual Bool_t	InheritsFrom (const char *classname) const
	Returns kTRUE if object inherits from class "classname". More...
virtual Bool_t	InheritsFrom (const TClass *cl) const
	Returns kTRUE if object inherits from TClass cl. More...
virtual void	Inspect () const
	Dump contents of this object in a graphics canvas. More...
void	InvertBit (UInt_t f)
virtual Bool_t	IsEqual (const TObject *obj) const
	Default equal comparison (objects are equal if they have the same address in memory). More...
virtual Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...
R__ALWAYS_INLINE Bool_t	IsOnHeap () const
virtual Bool_t	IsSortable () const
R__ALWAYS_INLINE Bool_t	IsZombie () const
virtual void	ls (Option_t *option="") const
	The ls function lists the contents of a class on stdout. More...
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). More...
virtual Bool_t	Notify ()
	This method must be overridden to handle object notification. More...
void	Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete. More...
void	operator delete (void *ptr)
	Operator delete. More...
void	operator delete[] (void *ptr)
	Operator delete []. More...
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. More...
virtual void	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself. More...
virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list. More...
virtual void	Print (Option_t *option="") const
	This method must be overridden when a class wants to print itself. More...
virtual Int_t	Read (const char *name)
	Read contents of object with specified name from the current directory. More...
virtual void	RecursiveRemove (TObject *obj)
	Recursively remove this object from a list. More...
void	ResetBit (UInt_t f)
virtual void	SaveAs (const char *filename="", Option_t *option="") const
	Save this object in the file specified by filename. More...
virtual void	SavePrimitive (std::ostream &out, Option_t *option="")
	Save a primitive as a C++ statement(s) on output stream "out". More...
void	SetBit (UInt_t f)
void	SetBit (UInt_t f, Bool_t set)
	Set or unset the user status bits as specified in f. More...
virtual void	SetDrawOption (Option_t *option="")
	Set drawing option for object. More...
virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id. More...
virtual void	SysError (const char *method, const char *msgfmt,...) const
	Issue system error message. More...
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. More...
virtual void	Warning (const char *method, const char *msgfmt,...) const
	Issue warning message. More...
virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory. More...
virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
	Write this object to the current directory. More...
Public Member Functions inherited from TXMLSetup
	TXMLSetup ()
	default constructor of TXMLSetup class More...
	TXMLSetup (const char *opt)
	creates TXMLSetup object getting values from string More...
	TXMLSetup (const TXMLSetup &src)
	copy constructor of TXMLSetup class More...
virtual	~TXMLSetup ()
	TXMLSetup class destructor. More...
Int_t	GetNextRefCounter ()
TString	GetSetupAsString ()
	return setup values as string More...
EXMLLayout	GetXmlLayout () const
Bool_t	IsStoreStreamerInfos () const
Bool_t	IsUseDtd () const
Bool_t	IsUseNamespaces () const
void	PrintSetup ()
	show setup values More...
virtual void	SetStoreStreamerInfos (Bool_t iConvert=kTRUE)
virtual void	SetUsedDtd (Bool_t use=kTRUE)
virtual void	SetUseNamespaces (Bool_t iUseNamespaces=kTRUE)
virtual void	SetXmlLayout (EXMLLayout layout)
const char *	XmlClassNameSpaceRef (const TClass *cl)
	produce string which used as reference in class namespace definition More...
const char *	XmlConvertClassName (const char *name)
	convert class name to exclude any special symbols like ':', '<' '>' ',' and spaces More...
const char *	XmlGetElementName (const TStreamerElement *el)
	return converted name for TStreamerElement More...

Protected Member Functions
void	CombineNodesTree (TDirectory *dir, XMLNodePointer_t topnode, Bool_t dolink)
	Connect/disconnect all file nodes to single tree before/after saving. More...
virtual Long64_t	DirCreateEntry (TDirectory *)
	Create key for directory entry in the key. More...
virtual Int_t	DirReadKeys (TDirectory *)
	Read keys for directory Make sense only once, while next time no new subnodes will be created. More...
virtual void	DirWriteHeader (TDirectory *)
	Write the directory header. More...
virtual void	DirWriteKeys (TDirectory *)
	Update key attributes. More...
TKeyXML *	FindDirKey (TDirectory *dir)
	Search for key which correspond to directory dir. More...
TDirectory *	FindKeyDir (TDirectory *mother, Long64_t keyid)
	Find a directory in motherdir with a seek equal to keyid. More...
InfoListRet	GetStreamerInfoListImpl (bool lookupSICache)
	Read streamerinfo structures from xml format and provide them in the list It is user responsibility to destroy this list. More...
void	InitXmlFile (Bool_t create)
	initialize xml file and correspondent structures identical to TFile::Init() function More...
Bool_t	ReadFromFile ()
	read document from file Now full content of document reads into the memory Then document decomposed to separate keys and streamer info structures All irrelevant data will be cleaned More...
Int_t	ReadKeysList (TDirectory *dir, XMLNodePointer_t topnode)
	Read list of keys for directory. More...
void	ReadStreamerElement (XMLNodePointer_t node, TStreamerInfo *info)
	read and reconstruct single TStreamerElement from xml node More...
void	SaveToFile ()
	Saves xml structures to the file xml elements are kept in list of TKeyXML objects When saving, all this elements are linked to root xml node At the end StreamerInfo structures are added After xml document is saved, all nodes will be unlinked from root node and kept in memory. More...
void	StoreStreamerElement (XMLNodePointer_t node, TStreamerElement *elem)
	store data of single TStreamerElement in streamer node More...
virtual Int_t	SysClose (Int_t)
	Interface to system close. All arguments like in POSIX close(). More...
virtual Int_t	SysOpen (const char *, Int_t, UInt_t)
	Interface to system open. All arguments like in POSIX open(). More...
virtual Int_t	SysRead (Int_t, void *, Int_t)
	Interface to system read. All arguments like in POSIX read(). More...
virtual Long64_t	SysSeek (Int_t, Long64_t, Int_t)
	Interface to system lseek. More...
virtual Int_t	SysStat (Int_t, Long_t *, Long64_t *, Long_t *, Long_t *)
	Return file stat information. More...
virtual Int_t	SysSync (Int_t)
	Interface to system fsync. All arguments like in POSIX fsync(). More...
virtual Int_t	SysWrite (Int_t, const void *, Int_t)
	Interface to system write. All arguments like in POSIX write(). More...
Protected Member Functions inherited from TFile
virtual Long64_t	DirCreateEntry (TDirectory *)
virtual Int_t	DirReadKeys (TDirectory *)
virtual void	DirWriteHeader (TDirectory *)
virtual void	DirWriteKeys (TDirectory *)
Bool_t	FlushWriteCache ()
	Flush the write cache if active. More...
virtual EAsyncOpenStatus	GetAsyncOpenStatus ()
virtual InfoListRet	GetStreamerInfoListImpl (bool lookupSICache)
	See documentation of GetStreamerInfoList for more details. More...
virtual void	Init (Bool_t create)
	Initialize a TFile object. More...
Int_t	MakeProjectParMake (const char *packname, const char *filename)
	Create makefile at 'filemake' for PAR package 'pack'. More...
Int_t	MakeProjectParProofInf (const char *packname, const char *proofinfdir)
	Create BUILD.sh and SETUP.C under 'proofinf' for PAR package 'pack'. More...
Int_t	ReadBufferViaCache (char *buf, Int_t len)
	Read buffer via cache. More...
virtual Int_t	SysClose (Int_t fd)
	Interface to system close. All arguments like in POSIX close(). More...
virtual Int_t	SysOpen (const char *pathname, Int_t flags, UInt_t mode)
	Interface to system open. All arguments like in POSIX open(). More...
virtual Int_t	SysRead (Int_t fd, void *buf, Int_t len)
	Interface to system read. All arguments like in POSIX read(). More...
virtual Long64_t	SysSeek (Int_t fd, Long64_t offset, Int_t whence)
	Interface to system lseek. More...
virtual Int_t	SysStat (Int_t fd, Long_t *id, Long64_t *size, Long_t *flags, Long_t *modtime)
	Return file stat information. More...
virtual Int_t	SysSync (Int_t fd)
	Interface to system fsync. All arguments like in POSIX fsync(). More...
virtual Int_t	SysWrite (Int_t fd, const void *buf, Int_t len)
	Interface to system write. All arguments like in POSIX write(). More...
Int_t	WriteBufferViaCache (const char *buf, Int_t len)
	Write buffer via cache. More...
Protected Member Functions inherited from TDirectoryFile
virtual void	CleanTargets ()
	Clean the pointers to this object (gDirectory, TContext, etc.) More...
void	Init (TClass *cl=0)
	Initialize the key associated with this directory (and the related data members. More...
Protected Member Functions inherited from TDirectory
	TDirectory (const TDirectory &directory)
	Copy constructor. More...
Bool_t	cd1 (const char *path)
	flag to add histograms, graphs,etc to the directory More...
virtual void	CleanTargets ()
	Clean the pointers to this object (gDirectory, TContext, etc.). More...
void	FillFullPath (TString &buf) const
	Recursive method to fill full path for directory. More...
void	operator= (const TDirectory &)
void	RegisterContext (TContext *ctxt)
	Register a TContext pointing to this TDirectory object. More...
void	UnregisterContext (TContext *ctxt)
	UnRegister a TContext pointing to this TDirectory object. More...
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). More...
void	MakeZombie ()
Protected Member Functions inherited from TXMLSetup
Int_t	AtoI (const char *sbuf, Int_t def=0, const char *errinfo=0)
	converts string to integer. More...
const char *	GetElItemName (TStreamerElement *el)
	get item name for given element More...
Bool_t	IsValidXmlSetup (const char *setupstr)
	checks if string is valid setup More...
Bool_t	ReadSetupFromStr (const char *setupstr)
	get values from string More...
TClass *	XmlDefineClass (const char *xmlClassName)
	define class for the converted class name, where special symbols were replaced by '_' More...

Static Protected Member Functions
static void	ProduceFileNames (const char *filename, TString &fname, TString &dtdname)
	function produces pair of xml and dtd file names More...
Static Protected Member Functions inherited from TDirectory
static Bool_t	Cd1 (const char *path)
	Change current directory to "path". More...

Protected Attributes
XMLDocPointer_t	fDoc
Int_t	fIOVersion
	object for interface with xml library More...
Long64_t	fKeyCounter
	indicates format of ROOT xml file More...
XMLNodePointer_t	fStreamerInfoNode
TXMLEngine *	fXML
	pointer of node with streamer info data More...
Protected Attributes inherited from TFile
TArchiveFile *	fArchive
	!Archive file from which we read this file More...
Long64_t	fArchiveOffset
	!Offset at which file starts in archive More...
TFileOpenHandle *	fAsyncHandle
	!For proper automatic cleanup More...
EAsyncOpenStatus	fAsyncOpenStatus
	!Status of an asynchronous open request More...
Long64_t	fBEGIN
	First used byte in file. More...
Long64_t	fBytesRead
	Number of bytes read from this file. More...
Long64_t	fBytesReadExtra
	Number of extra bytes (overhead) read by the readahead buffer. More...
Long64_t	fBytesWrite
	Number of bytes written to this file. More...
TFileCacheRead *	fCacheRead
	!Pointer to the read cache (if any) More...
TMap *	fCacheReadMap
	!Pointer to the read cache (if any) More...
TFileCacheWrite *	fCacheWrite
	!Pointer to the write cache (if any) More...
TArrayC *	fClassIndex
	!Index of TStreamerInfo classes written to this file More...
Int_t	fCompress
	Compression level and algorithm. More...
Int_t	fD
	File descriptor. More...
Long64_t	fEND
	Last used byte in file. More...
TList *	fFree
	Free segments linked list table. More...
TList *	fInfoCache
	!Cached list of the streamer infos in this file More...
Bool_t	fInitDone: 1
	!True if the file has been initialized More...
Bool_t	fIsArchive: 1
	!True if this is a pure archive file More...
Bool_t	fIsPcmFile: 1
	!True if the file is a ROOT pcm file. More...
Bool_t	fIsRootFile: 1
	!True is this is a ROOT file, raw file otherwise More...
Bool_t	fMustFlush: 1
	!True if the file buffers must be flushed More...
Int_t	fNbytesFree
	Number of bytes for free segments structure. More...
Int_t	fNbytesInfo
	Number of bytes for StreamerInfo record. More...
Bool_t	fNoAnchorInName: 1
	!True if we don't want to force the anchor to be appended to the file name More...
Int_t	fNProcessIDs
	Number of TProcessID written to this file. More...
Long64_t	fOffset
	!Seek offset cache More...
TList *	fOpenPhases
	!Time info about open phases More...
TString	fOption
	File options. More...
TObjArray *	fProcessIDs
	!Array of pointers to TProcessIDs More...
Int_t	fReadCalls
	Number of read calls ( not counting the cache calls ) More...
TString	fRealName
	Effective real file name (not original url) More...
Long64_t	fSeekFree
	Location on disk of free segments structure. More...
Long64_t	fSeekInfo
	Location on disk of StreamerInfo record. More...
Double_t	fSum2Buffer
	Sum of squares of buffer sizes of objects written so far. More...
Double_t	fSumBuffer
	Sum of buffer sizes of objects written so far. More...
Char_t	fUnits
	Number of bytes for file pointers. More...
TUrl	fUrl
	!URL of file More...
Int_t	fVersion
	File format version. More...
std::mutex	fWriteMutex
	!Lock for writing baskets / keys into the file. More...
Int_t	fWritten
	Number of objects written so far. More...
Protected Attributes inherited from TDirectoryFile
Int_t	fBufferSize
	Default buffer size to create new TKeys. More...
TDatime	fDatimeC
	Date and time when directory is created. More...
TDatime	fDatimeM
	Date and time of last modification. More...
TFile *	fFile
	Pointer to current file in memory. More...
TList *	fKeys
	Pointer to keys list in memory. More...
Bool_t	fModified
	True if directory has been modified. More...
Int_t	fNbytesKeys
	Number of bytes for the keys. More...
Int_t	fNbytesName
	Number of bytes in TNamed at creation time. More...
Long64_t	fSeekDir
	Location of directory on file. More...
Long64_t	fSeekKeys
	Location of Keys record on file. More...
Long64_t	fSeekParent
	Location of parent directory on file. More...
Bool_t	fWritable
	True if directory is writable. More...
Protected Attributes inherited from TDirectory
TContext *	fContext
	Buffer for GetPath() function. More...
std::atomic< size_t >	fContextPeg
	Pointer to a list of TContext object pointing to this TDirectory. More...
TList *	fList
TObject *	fMother
TString	fPathBuffer
std::atomic_flag	fSpinLock
	Counter delaying the TDirectory destructor from finishing. More...
TUUID	fUUID
Protected Attributes inherited from TNamed
TString	fName
TString	fTitle
Protected Attributes inherited from TXMLSetup
Int_t	fRefCounter
Bool_t	fStoreStreamerInfos
TString	fStrBuf
	counter , used to build id of xml references More...
Bool_t	fUseDtd
Bool_t	fUseNamespaces
EXMLLayout	fXmlLayout

Private Member Functions
void	operator= (const TXMLFile &)
	make private to exclude copy operator More...

Additional Inherited Members
Public Types inherited from TFile
enum	{ kStartBigFile = 2000000000 }
enum	EAsyncOpenStatus { kAOSNotAsync = -1 , kAOSFailure = 0 , kAOSInProgress = 1 , kAOSSuccess = 2 }
	Asynchronous open request status. More...
enum	ECacheAction { kDisconnect = 0 , kDoNotDisconnect = 1 }
	TTreeCache flushing semantics. More...
enum	EFileType {   kDefault = 0 , kLocal = 1 , kNet = 2 , kWeb = 3 ,   kFile = 4 , kMerge = 5 }
	File type. More...
enum	EOpenTimeOut { kInstantTimeout = 0 , kEternalTimeout = 999999999 }
	Open timeout constants. More...
enum	ERelativeTo { kBeg = 0 , kCur = 1 , kEnd = 2 }
enum	EStatusBits {   kRecovered = BIT(10) , kHasReferences = BIT(11) , kDevNull = BIT(12) , kWriteError = BIT(14) ,   kBinaryFile = BIT(15) , kRedirected = BIT(16) }
	TFile status bits. BIT(13) is taken up by TObject. More...
Public Types inherited from TDirectoryFile
enum	{ kCloseDirectory = BIT(7) }
Public Types inherited from TObject
enum	{   kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 ,   kBitMask = 0x00ffffff }
enum	{ kSingleKey = BIT(0) , kOverwrite = BIT(1) , kWriteDelete = BIT(2) }
enum	EDeprecatedStatusBits { kObjInCanvas = BIT(3) }
enum	EStatusBits {   kCanDelete = BIT(0) , kMustCleanup = BIT(3) , kIsReferenced = BIT(4) , kHasUUID = BIT(5) ,   kCannotPick = BIT(6) , kNoContextMenu = BIT(8) , kInvalidObject = BIT(13) }
Public Types inherited from TXMLSetup
enum	EXMLLayout { kSpecialized = 2 , kGeneralized = 3 }
Static Public Member Functions inherited from TFile
static TFileOpenHandle *	AsyncOpen (const char *name, Option_t *option="", const char *ftitle="", Int_t compress=ROOT::RCompressionSetting::EDefaults::kUseGeneralPurpose, Int_t netopt=0)
	Submit an asynchronous open request. More...
static Bool_t	Cp (const char *src, const char *dst, Bool_t progressbar=kTRUE, UInt_t buffersize=1000000)
	Allows to copy file from src to dst URL. More...
static TFile *&	CurrentFile ()
	Return the current ROOT file if any. More...
static EAsyncOpenStatus	GetAsyncOpenStatus (const char *name)
	Get status of the async open request related to 'name'. More...
static EAsyncOpenStatus	GetAsyncOpenStatus (TFileOpenHandle *handle)
	Get status of the async open request related to 'handle'. More...
static const char *	GetCacheFileDir ()
	Get the directory where to locally stage/cache remote files. More...
static const TUrl *	GetEndpointUrl (const char *name)
	Get final URL for file being opened asynchronously. More...
static Long64_t	GetFileBytesRead ()
	Static function returning the total number of bytes read from all files. More...
static Long64_t	GetFileBytesWritten ()
	Static function returning the total number of bytes written to all files. More...
static Long64_t	GetFileCounter ()
static Int_t	GetFileReadCalls ()
	Static function returning the total number of read calls from all files. More...
static Bool_t	GetOnlyStaged ()
	Returns staged only flag. More...
static UInt_t	GetOpenTimeout ()
	Returns open timeout (in ms). More...
static Int_t	GetReadaheadSize ()
	Static function returning the readahead buffer size. More...
static Bool_t	GetReadStreamerInfo ()
	If the streamerinfos are to be read at file opening. More...
static EFileType	GetType (const char *name, Option_t *option="", TString *prefix=0)
	Resolve the file type as a function of the protocol field in 'name'. More...
static void	IncrementFileCounter ()
static TFile *	Open (const char *name, Option_t *option="", const char *ftitle="", Int_t compress=ROOT::RCompressionSetting::EDefaults::kUseGeneralPurpose, Int_t netopt=0)
	Create / open a file. More...
static TFile *	Open (TFileOpenHandle *handle)
	Waits for the completion of an asynchronous open request. More...
static Bool_t	SetCacheFileDir (ROOT::Internal::TStringView cacheDir, Bool_t operateDisconnected=kTRUE, Bool_t forceCacheread=kFALSE)
static Bool_t	SetCacheFileDir (std::string_view cacheDir, Bool_t operateDisconnected=kTRUE, Bool_t forceCacheread=kFALSE)
	Sets the directory where to locally stage/cache remote files. More...
static void	SetFileBytesRead (Long64_t bytes=0)
static void	SetFileBytesWritten (Long64_t bytes=0)
static void	SetFileReadCalls (Int_t readcalls=0)
static Bool_t	SetOnlyStaged (Bool_t onlystaged)
	Sets only staged flag. More...
static UInt_t	SetOpenTimeout (UInt_t timeout)
	Sets open timeout time (in ms). Returns previous timeout value. More...
static void	SetReadaheadSize (Int_t bufsize=256000)
static void	SetReadStreamerInfo (Bool_t readinfo=kTRUE)
	Specify if the streamerinfos must be read at file opening. More...
static Bool_t	ShrinkCacheFileDir (Long64_t shrinkSize, Long_t cleanupInteval=0)
	Try to shrink the cache to the desired size. More...
Static Public Member Functions inherited from TDirectory
static void	AddDirectory (Bool_t add=kTRUE)
	Sets the flag controlling the automatic add objects like histograms, TGraph2D, etc in memory. More...
static Bool_t	AddDirectoryStatus ()
	Static function: see TDirectory::AddDirectory for more comments. More...
static Bool_t	Cd (const char *path)
	Change current directory to "path". More...
static TDirectory *&	CurrentDirectory ()
	Return the current directory for the current thread. More...
static void	DecodeNameCycle (const char *namecycle, char *name, Short_t &cycle, const size_t namesize=0)
	Decode a namecycle "aap;2" into name "aap" and cycle "2". More...
static void	EncodeNameCycle (char *buffer, const char *name, Short_t cycle)
	Encode the name and cycle into buffer like: "aap;2". More...
Static Public Member Functions inherited from TObject
static Long_t	GetDtorOnly ()
	Return destructor only flag. More...
static Bool_t	GetObjectStat ()
	Get status of object stat flag. More...
static void	SetDtorOnly (void *obj)
	Set destructor only flag. More...
static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable. More...
Static Public Member Functions inherited from TXMLSetup
static TString	DefaultXmlSetup ()
	return default value for XML setup More...
static void	SetNameSpaceBase (const char *namespacebase)
	set namespace base More...
Static Protected Attributes inherited from TFile
static TList *	fgAsyncOpenRequests = 0
static std::atomic< Long64_t >	fgBytesRead {0}
	Number of bytes read by all TFile objects. More...
static std::atomic< Long64_t >	fgBytesWrite {0}
	Number of bytes written by all TFile objects. More...
static TString	fgCacheFileDir
	Directory where to locally stage files. More...
static Bool_t	fgCacheFileDisconnected = kTRUE
	Indicates, we trust in the files in the cache dir without stat on the cached file. More...
static Bool_t	fgCacheFileForce = kFALSE
	Indicates, to force all READ to CACHEREAD. More...
static std::atomic< Long64_t >	fgFileCounter {0}
	Counter for all opened files. More...
static Bool_t	fgOnlyStaged = 0
	Before the file is opened, it is checked, that the file is staged, if not, the open fails. More...
static UInt_t	fgOpenTimeout = TFile::kEternalTimeout
	Timeout for open operations in ms - 0 corresponds to blocking i/o. More...
static Int_t	fgReadaheadSize = 256000
	Readahead buffer size. More...
static std::atomic< Int_t >	fgReadCalls {0}
	Number of bytes read from all TFile objects. More...
static Bool_t	fgReadInfo = kTRUE
	if true (default) ReadStreamerInfo is called when opening a file More...
static ROOT::TRWSpinLock	fgRwLock
	!Read-write lock to protect global PID list More...
static ROOT::Internal::RConcurrentHashColl	fgTsSIHashes
	!TS Set of hashes built from read streamer infos More...
Static Protected Attributes inherited from TDirectory
static Bool_t	fgAddDirectory = kTRUE
	MSVC doesn't support = ATOMIC_FLAG_INIT;. More...
Static Protected Attributes inherited from TXMLSetup
static TString	fgNameSpaceBase = "http://root.cern.ch/root/htmldoc/"
	buffer, used in XmlDefineClass() function More...

#include <TXMLFile.h>

Inheritance diagram for TXMLFile:

Constructor & Destructor Documentation

TXMLFile() [1/2]

TXMLFile::TXMLFile

(

)

default TXMLFile constructor

Definition at line 96 of file TXMLFile.cxx.

TXMLFile() [2/2]

TXMLFile::TXMLFile	(	const char *	filename,
		Option_t *	option = "read",
		const char *	title = "title",
		Int_t	compression = ROOT::RCompressionSetting::EDefaults::kUseGeneralPurpose
	)

Open or creates local XML file with name filename.

It is recommended to specify filename as "<file>.xml". The suffix ".xml" will be used by object browsers to automatically identify the file as a XML file. If the constructor fails in any way IsZombie() will return true. Use IsOpen() to check if the file is (still) open.

If option = NEW or CREATE create a new file and open it for writing, if the file already exists the file is not opened. = RECREATE create a new file, if the file already exists it will be overwritten. = 2xoo create a new file with specified xml settings for more details see TXMLSetup class = UPDATE open an existing file for writing. if no file exists, it is created. = READ open an existing file for reading.

For more details see comments for TFile::TFile() constructor

TXMLFile does not support TTree objects

Definition at line 124 of file TXMLFile.cxx.

~TXMLFile()

TXMLFile::~TXMLFile ( )

virtual

destructor of TXMLFile object

Definition at line 365 of file TXMLFile.cxx.

Member Function Documentation

AddXmlComment()

Bool_t TXMLFile::AddXmlComment

(

const char *

comment

)

Add comment line on the top of the xml document This line can only be seen in xml editor and cannot be accessed later with TXMLFile methods.

Definition at line 976 of file TXMLFile.cxx.

AddXmlLine()

Bool_t TXMLFile::AddXmlLine

(

const char *

line

)

Add just one line on the top of xml document For instance, line can contain special xml processing instructions Line should has correct xml syntax that later it can be decoded by xml parser To be parsed later by TXMLFile again, this line should contain either xml comments or xml processing instruction.

Definition at line 1010 of file TXMLFile.cxx.

AddXmlStyleSheet()

Bool_t TXMLFile::AddXmlStyleSheet	(	const char *	href,
		const char *	type = "text/css",
		const char *	title = 0,
		int	alternate = -1,
		const char *	media = 0,
		const char *	charset = 0
	)

Adds style sheet definition on the top of xml document Creates <?xml-stylesheet alternate="yes" title="compact" href="small-base.css" type="text/css"?> Attributes href and type must be supplied, other attributes: title, alternate, media, charset are optional if alternate==0, attribute alternate="no" will be created, if alternate>0, attribute alternate="yes" if alternate<0, attribute will not be created This style sheet definition cannot be later access with TXMLFile methods.

Definition at line 994 of file TXMLFile.cxx.

Close()

void TXMLFile::Close ( Option_t *  option = "" )

virtual

Close a XML file For more comments see TFile::Close() function.

Reimplemented from TFile.

Definition at line 309 of file TXMLFile.cxx.

CombineNodesTree()

void TXMLFile::CombineNodesTree ( TDirectory *  dir, XMLNodePointer_t  topnode, Bool_t  dolink  )

protected

Connect/disconnect all file nodes to single tree before/after saving.

Definition at line 548 of file TXMLFile.cxx.

CreateKey() [1/2]

TKey * TXMLFile::CreateKey ( TDirectory *  mother, const TObject *  obj, const char *  name, Int_t  bufsize  )

virtual

create XML key, which will store object in xml structures

Reimplemented from TFile.

Definition at line 430 of file TXMLFile.cxx.

CreateKey() [2/2]

TKey * TXMLFile::CreateKey ( TDirectory *  mother, const void *  obj, const TClass *  cl, const char *  name, Int_t  bufsize  )

virtual

create XML key, which will store object in xml structures

Reimplemented from TFile.

Definition at line 438 of file TXMLFile.cxx.

DirCreateEntry()

Long64_t TXMLFile::DirCreateEntry ( TDirectory *  dir )

protectedvirtual

Create key for directory entry in the key.

Reimplemented from TFile.

Definition at line 1021 of file TXMLFile.cxx.

DirReadKeys()

Int_t TXMLFile::DirReadKeys ( TDirectory *  dir )

protectedvirtual

Read keys for directory Make sense only once, while next time no new subnodes will be created.

Reimplemented from TFile.

Definition at line 1082 of file TXMLFile.cxx.

DirWriteHeader()

void TXMLFile::DirWriteHeader ( TDirectory *  dir )

protectedvirtual

Write the directory header.

Reimplemented from TFile.

Definition at line 1109 of file TXMLFile.cxx.

DirWriteKeys()

void TXMLFile::DirWriteKeys ( TDirectory *  )

protectedvirtual

Update key attributes.

Reimplemented from TFile.

Definition at line 1094 of file TXMLFile.cxx.

DrawMap()

virtual void TXMLFile::DrawMap ( const char *  keys = "*", Option_t *  option = ""  )

inlinevirtual

Draw map of objects in this file.

Reimplemented from TFile.

Definition at line 59 of file TXMLFile.h.

FillBuffer()

virtual void TXMLFile::FillBuffer ( char *&  buffer )

inlinevirtual

Encode file output buffer.

The file output buffer contains only the FREE data record.

Reimplemented from TFile.

Definition at line 60 of file TXMLFile.h.

FindDirKey()

TKeyXML * TXMLFile::FindDirKey ( TDirectory *  dir )

protected

Search for key which correspond to directory dir.

Definition at line 1037 of file TXMLFile.cxx.

FindKeyDir()

TDirectory * TXMLFile::FindKeyDir ( TDirectory *  mother, Long64_t  keyid  )

protected

Find a directory in motherdir with a seek equal to keyid.

Definition at line 1060 of file TXMLFile.cxx.

Flush()

virtual void TXMLFile::Flush ( )

inlinevirtual

Synchronize a file's in-memory and on-disk states.

Reimplemented from TFile.

Definition at line 61 of file TXMLFile.h.

GetEND()

virtual Long64_t TXMLFile::GetEND ( ) const

inlinevirtual

Reimplemented from TFile.

Definition at line 63 of file TXMLFile.h.

GetErrno()

virtual Int_t TXMLFile::GetErrno ( ) const

inlinevirtual

Method returning errno. Is overriden in TRFIOFile.

Reimplemented from TFile.

Definition at line 64 of file TXMLFile.h.

GetIOVersion()

Int_t TXMLFile::GetIOVersion ( ) const

inline

Definition at line 74 of file TXMLFile.h.

GetNbytesFree()

virtual Int_t TXMLFile::GetNbytesFree ( ) const

inlinevirtual

Reimplemented from TFile.

Definition at line 69 of file TXMLFile.h.

GetNbytesInfo()

virtual Int_t TXMLFile::GetNbytesInfo ( ) const

inlinevirtual

Reimplemented from TFile.

Definition at line 68 of file TXMLFile.h.

GetNfree()

virtual Int_t TXMLFile::GetNfree ( ) const

inlinevirtual

Reimplemented from TFile.

Definition at line 67 of file TXMLFile.h.

GetSeekFree()

virtual Long64_t TXMLFile::GetSeekFree ( ) const

inlinevirtual

Reimplemented from TFile.

Definition at line 70 of file TXMLFile.h.

GetSeekInfo()

virtual Long64_t TXMLFile::GetSeekInfo ( ) const

inlinevirtual

Reimplemented from TFile.

Definition at line 71 of file TXMLFile.h.

GetSize()

virtual Long64_t TXMLFile::GetSize ( ) const

inlinevirtual

Returns the current file size.

Returns -1 in case the file could not be stat'ed.

Reimplemented from TFile.

Definition at line 72 of file TXMLFile.h.

GetStreamerInfoListImpl()

TFile::InfoListRet TXMLFile::GetStreamerInfoListImpl ( bool  lookupSICache )

protectedvirtual

Read streamerinfo structures from xml format and provide them in the list It is user responsibility to destroy this list.

Reimplemented from TFile.

Definition at line 728 of file TXMLFile.cxx.

InitXmlFile()

void TXMLFile::InitXmlFile ( Bool_t  create )

protected

initialize xml file and correspondent structures identical to TFile::Init() function

Definition at line 272 of file TXMLFile.cxx.

IsOpen()

Bool_t TXMLFile::IsOpen ( ) const

virtual

return kTRUE if file is opened and can be accessed

Reimplemented from TFile.

Definition at line 385 of file TXMLFile.cxx.

MakeFree()

virtual void TXMLFile::MakeFree ( Long64_t  first, Long64_t  last  )

inlinevirtual

Mark unused bytes on the file.

The list of free segments is in the fFree linked list. When an object is deleted from the file, the freed space is added into the FREE linked list (fFree). The FREE list consists of a chain of consecutive free segments on the file. At the same time, the first 4 bytes of the freed record on the file are overwritten by GAPSIZE where GAPSIZE = -(Number of bytes occupied by the record).

Reimplemented from TFile.

Definition at line 78 of file TXMLFile.h.

MakeProject()

virtual void TXMLFile::MakeProject ( const char *  dirname, const char *  classes = "*", Option_t *  option = "new"  )

inlinevirtual

Generate source code necessary to access the objects stored in the file.

Generate code in directory dirname for all classes specified in argument classes If classes = "*" (default and currently the only supported value), the function generates an include file for each class in the StreamerInfo list for which a TClass object does not exist.

The code generated includes:

• dirnameProjectHeaders.h, which contains one #include statement per generated header file
• dirnameProjectSource.cxx,which contains all the constructors and destructors implementation. and one header per class that is not nested inside another class. The header file name is the fully qualified name of the class after all the special characters "<>,:" are replaced by underscored. For example for std::pair<edm::Vertex,int> the file name is pair_edm__Vertex_int_.h

In the generated classes, map, multimap when the first template parameter is a class are replaced by a vector of pair. set and multiset when the tempalte parameter is a class are replaced by a vector. This is required since we do not have the code needed to order and/or compare the object of the classes. This is a quick explanation of the options available:

Option	Details
new (default)	A new directory dirname is created. If dirname already exist, an error message is printed and the function returns.
recreate	If dirname does not exist, it is created (like in "new"). If dirname already exist, all existing files in dirname are deleted before creating the new files.
update	New classes are added to the existing directory. Existing classes with the same name are replaced by the new definition. If the directory dirname doest not exist, same effect as "new".
genreflex	Use genreflex rather than rootcint to generate the dictionary.
par	Create a PAR file with the minimal set of code needed to read the content of the ROOT file. The name of the PAR file is basename(dirname), with extension '.par' enforced; the PAR file will be created at dirname(dirname).

If, in addition to one of the 3 above options, the option "+" is specified, the function will generate:

• a script called MAKEP to build the shared lib
• a dirnameLinkDef.h file
• rootcint will be run to generate a dirnameProjectDict.cxx file
• dirnameProjectDict.cxx will be compiled with the current options in compiledata.h
• a shared lib dirname.so will be created. If the option "++" is specified, the generated shared lib is dynamically linked with the current executable module. If the option "+" and "nocompile" are specified, the utility files are generated as in the option "+" but they are not executed. Example: file.MakeProject("demo","*","recreate++");
• creates a new directory demo unless it already exist
• clear the previous directory content
• generate the xxx.h files for all classes xxx found in this file and not yet known to the CINT dictionary.
• creates the build script MAKEP
• creates a LinkDef.h file
• runs rootcint generating demoProjectDict.cxx
• compiles demoProjectDict.cxx into demoProjectDict.o
• generates a shared lib demo.so
• dynamically links the shared lib demo.so to the executable If only the option "+" had been specified, one can still link the shared lib to the current executable module with:

  gSystem->load("demo/demo.so");
  

  The following feature is not yet enabled: One can restrict the list of classes to be generated by using expressions like:

  classes = "Ali*" generate code only for classes starting with Ali
  classes = "myClass" generate code for class MyClass only.
  

Reimplemented from TFile.

Definition at line 79 of file TXMLFile.h.

Map() [1/2]

virtual void TXMLFile::Map ( )

inlinevirtual

Reimplemented from TFile.

Definition at line 81 of file TXMLFile.h.

Map() [2/2]

virtual void TXMLFile::Map ( Option_t *  opt )

inlinevirtual

List the contents of a file sequentially.

For each logical record found, it prints:

Date/Time  Record_Adress Logical_Record_Length  ClassName  CompressionFactor

Example of output

20010404/150437  At:64        N=150       TFile
20010404/150440  At:214       N=28326     TBasket        CX =  1.13
20010404/150440  At:28540     N=29616     TBasket        CX =  1.08
20010404/150440  At:58156     N=29640     TBasket        CX =  1.08
20010404/150440  At:87796     N=29076     TBasket        CX =  1.10
20010404/150440  At:116872    N=10151     TBasket        CX =  3.15
20010404/150441  At:127023    N=28341     TBasket        CX =  1.13
20010404/150441  At:155364    N=29594     TBasket        CX =  1.08
20010404/150441  At:184958    N=29616     TBasket        CX =  1.08
20010404/150441  At:214574    N=29075     TBasket        CX =  1.10
20010404/150441  At:243649    N=9583      TBasket        CX =  3.34
20010404/150442  At:253232    N=28324     TBasket        CX =  1.13
20010404/150442  At:281556    N=29641     TBasket        CX =  1.08
20010404/150442  At:311197    N=29633     TBasket        CX =  1.08
20010404/150442  At:340830    N=29091     TBasket        CX =  1.10
20010404/150442  At:369921    N=10341     TBasket        CX =  3.09
20010404/150442  At:380262    N=509       TH1F           CX =  1.93
20010404/150442  At:380771    N=1769      TH2F           CX =  4.32
20010404/150442  At:382540    N=1849      TProfile       CX =  1.65
20010404/150442  At:384389    N=18434     TNtuple        CX =  4.51
20010404/150442  At:402823    N=307       KeysList
20010404/150443  At:403130    N=4548      StreamerInfo   CX =  3.65
20010404/150443  At:407678    N=86        FreeSegments
20010404/150443  At:407764    N=1         END

If the parameter opt contains "forComp", the Date/Time is ommitted and the decompressed size is also printed.

Record_Adress Logical_Record_Length Key_Length Object_Record_Length ClassName CompressionFactor

Example of output

Reimplemented from TFile.

Definition at line 80 of file TXMLFile.h.

operator=()

void TXMLFile::operator= ( const TXMLFile &  )

private

make private to exclude copy operator

Definition at line 378 of file TXMLFile.cxx.

Paint()

virtual void TXMLFile::Paint ( Option_t *  option = "" )

inlinevirtual

Paint all objects in the file.

Reimplemented from TFile.

Definition at line 82 of file TXMLFile.h.

Print()

virtual void TXMLFile::Print ( Option_t *  option = "" ) const

inlinevirtual

Print all objects in the file.

Reimplemented from TFile.

Definition at line 83 of file TXMLFile.h.

ProduceFileNames()

void TXMLFile::ProduceFileNames ( const char *  filename, TString &  fname, TString &  dtdname  )

staticprotected

function produces pair of xml and dtd file names

Definition at line 446 of file TXMLFile.cxx.

ReadBuffer() [1/2]

virtual Bool_t TXMLFile::ReadBuffer ( char *  buf, Int_t  len  )

inlinevirtual

Read a buffer from the file.

This is the basic low level read operation. Returns kTRUE in case of failure.

Reimplemented from TFile.

Definition at line 84 of file TXMLFile.h.

ReadBuffer() [2/2]

virtual Bool_t TXMLFile::ReadBuffer ( char *  buf, Long64_t  pos, Int_t  len  )

inlinevirtual

Read a buffer from the file at the offset 'pos' in the file.

Returns kTRUE in case of failure. Compared to ReadBuffer(char*, Int_t), this routine does not change the cursor on the physical file representation (fD) if the data is in this TFile's cache.

Reimplemented from TFile.

Definition at line 85 of file TXMLFile.h.

ReadFree()

virtual void TXMLFile::ReadFree ( )

inlinevirtual

Read the FREE linked list.

Every file has a linked list (fFree) of free segments. This linked list has been written on the file via WriteFree as a single data record.

Reimplemented from TFile.

Definition at line 86 of file TXMLFile.h.

ReadFromFile()

Bool_t TXMLFile::ReadFromFile ( )

protected

read document from file Now full content of document reads into the memory Then document decomposed to separate keys and streamer info structures All irrelevant data will be cleaned

Definition at line 572 of file TXMLFile.cxx.

ReadKeysList()

Int_t TXMLFile::ReadKeysList ( TDirectory *  dir, XMLNodePointer_t  topnode  )

protected

Read list of keys for directory.

Definition at line 643 of file TXMLFile.cxx.

ReadStreamerElement()

void TXMLFile::ReadStreamerElement ( XMLNodePointer_t  node, TStreamerInfo *  info  )

protected

read and reconstruct single TStreamerElement from xml node

Definition at line 836 of file TXMLFile.cxx.

Recover()

virtual Int_t TXMLFile::Recover ( )

inlinevirtual

Attempt to recover file if not correctly closed.

The function returns the number of keys that have been recovered. If no keys can be recovered, the file will be declared Zombie by the calling function. This function is automatically called when opening a file. If the file is open in read only mode, the file is not modified. If open in update mode and the function finds something to recover, a new directory header is written to the file. When opening the file gain no message from Recover will be reported. If keys have been recovered, the file is usable and you can safely read the corresponding objects. If the file is not usable (a zombie), you can test for this case with code like:

TFile f("myfile.root");
if (f.IsZombie()) {<actions to take if file is unusable>}

If the file has been recovered, the bit kRecovered is set in the TFile object in memory. You can test if the file has been recovered with

if (f.TestBit(TFile::kRecovered)) {... the file has been recovered}

When writing TTrees to a file, it is important to save the Tree header at regular intervals (see TTree::AutoSave). If a file containing a Tree is recovered, the last Tree header written to the file will be used. In this case all the entries in all the branches written before writing the header are valid entries. One can disable the automatic recovery procedure by setting

TFile.Recover 0

in the system.rootrc file.

Reimplemented from TFile.

Definition at line 87 of file TXMLFile.h.

ReOpen()

Int_t TXMLFile::ReOpen ( Option_t *  mode )

virtual

Reopen a file with a different access mode, like from READ to See TFile::Open() for details.

Reimplemented from TFile.

Definition at line 394 of file TXMLFile.cxx.

ResetErrno()

virtual void TXMLFile::ResetErrno ( ) const

inlinevirtual

Method resetting the errno. Is overridden in TRFIOFile.

Reimplemented from TFile.

Definition at line 65 of file TXMLFile.h.

SaveToFile()

void TXMLFile::SaveToFile ( )

protected

Saves xml structures to the file xml elements are kept in list of TKeyXML objects When saving, all this elements are linked to root xml node At the end StreamerInfo structures are added After xml document is saved, all nodes will be unlinked from root node and kept in memory.

Only Close() or destructor release memory, used by xml structures

Definition at line 476 of file TXMLFile.cxx.

Seek()

virtual void TXMLFile::Seek ( Long64_t  offset, ERelativeTo  pos = kBeg  )

inlinevirtual

Seek to a specific position in the file. Pos it either kBeg, kCur or kEnd.

Reimplemented from TFile.

Definition at line 89 of file TXMLFile.h.

SetEND()

virtual void TXMLFile::SetEND ( Long64_t  )

inlinevirtual

Reimplemented from TFile.

Definition at line 91 of file TXMLFile.h.

SetStoreStreamerInfos()

void TXMLFile::SetStoreStreamerInfos ( Bool_t  iConvert = kTRUE )

virtual

If true, all correspondent to file TStreamerInfo objects will be stored in file this allows to apply schema evolution later for this file may be useful, when file used outside ROOT and TStreamerInfo objects does not required Can be changed only for newly created file.

Reimplemented from TXMLSetup.

Definition at line 934 of file TXMLFile.cxx.

SetUsedDtd()

void TXMLFile::SetUsedDtd ( Bool_t  use = kTRUE )

virtual

Specify usage of DTD for this file.

Currently this option not available (always false). Can be changed only for newly created file.

Reimplemented from TXMLSetup.

Definition at line 945 of file TXMLFile.cxx.

SetUseNamespaces()

void TXMLFile::SetUseNamespaces ( Bool_t  iUseNamespaces = kTRUE )

virtual

Specify usage of namespaces in xml file In current implementation every instrumented class in file gets its unique namespace, which is equal to name of class and refer to root documentation page like <TAttPad xmlns:TAttPad="http://root.cern.ch/root/htmldoc/TAttPad.html" version="3"> And xml node for class member gets its name as combination of class name and member name <TAttPad:fLeftMargin v="0.100000"/> <TAttPad:fRightMargin v="0.100000"/> <TAttPad:fBottomMargin v="0.100000"/> and so on Usage of namespace increase size of xml file, but makes file more readable and allows to produce DTD in the case, when in several classes data member has same name Can be changed only for newly created file.

Reimplemented from TXMLSetup.

Definition at line 965 of file TXMLFile.cxx.

SetXmlLayout()

void TXMLFile::SetXmlLayout ( EXMLLayout  layout )

virtual

Change layout of objects in xml file Can be changed only for newly created file.

Currently there are two supported layouts:

TXMLSetup::kSpecialized = 2 This is default layout of the file, when xml nodes names class names and data member names are used. For instance: <TAttLine version="1"> <fLineColor v="1"> <fLineStyle v="1"> <fLineWidth v="1"> </TAttLine>

TXMLSetup::kGeneralized = 3 For this layout all nodes name does not depend from class definitions. The same class looks like <Class name="TAttLine" version="1"> <Member name="fLineColor" v="1"> <Member name="fLineStyle" v="1"> <Member name="fLineWidth" v="1"> </Member>

Reimplemented from TXMLSetup.

Definition at line 922 of file TXMLFile.cxx.

Sizeof()

virtual Int_t TXMLFile::Sizeof ( ) const

inlinevirtual

Return the size in bytes of the file header.

Reimplemented from TFile.

Definition at line 92 of file TXMLFile.h.

StoreStreamerElement()

void TXMLFile::StoreStreamerElement ( XMLNodePointer_t  node, TStreamerElement *  elem  )

protected

store data of single TStreamerElement in streamer node

Definition at line 780 of file TXMLFile.cxx.

SysClose()

virtual Int_t TXMLFile::SysClose ( Int_t  fd )

inlineprotectedvirtual

Interface to system close. All arguments like in POSIX close().

Reimplemented from TFile.

Definition at line 31 of file TXMLFile.h.

SysOpen()

virtual Int_t TXMLFile::SysOpen ( const char *  pathname, Int_t  flags, UInt_t  mode  )

inlineprotectedvirtual

Interface to system open. All arguments like in POSIX open().

Reimplemented from TFile.

Definition at line 30 of file TXMLFile.h.

SysRead()

virtual Int_t TXMLFile::SysRead ( Int_t  fd, void *  buf, Int_t  len  )

inlineprotectedvirtual

Interface to system read. All arguments like in POSIX read().

Reimplemented from TFile.

Definition at line 32 of file TXMLFile.h.

SysSeek()

virtual Long64_t TXMLFile::SysSeek ( Int_t  fd, Long64_t  offset, Int_t  whence  )

inlineprotectedvirtual

Interface to system lseek.

All arguments like in POSIX lseek() except that the offset and return value are of a type which are able to handle 64 bit file systems.

Reimplemented from TFile.

Definition at line 34 of file TXMLFile.h.

SysStat()

virtual Int_t TXMLFile::SysStat ( Int_t  fd, Long_t *  id, Long64_t *  size, Long_t *  flags, Long_t *  modtime  )

inlineprotectedvirtual

Return file stat information.

The interface and return value is identical to TSystem::GetPathInfo(). The function returns 0 in case of success and 1 if the file could not be stat'ed.

Reimplemented from TFile.

Definition at line 35 of file TXMLFile.h.

SysSync()

virtual Int_t TXMLFile::SysSync ( Int_t  fd )

inlineprotectedvirtual

Interface to system fsync. All arguments like in POSIX fsync().

Reimplemented from TFile.

Definition at line 36 of file TXMLFile.h.

SysWrite()

virtual Int_t TXMLFile::SysWrite ( Int_t  fd, const void *  buf, Int_t  len  )

inlineprotectedvirtual

Interface to system write. All arguments like in POSIX write().

Reimplemented from TFile.

Definition at line 33 of file TXMLFile.h.

Write() [1/2]

virtual Int_t TXMLFile::Write ( const char *  name = 0, Int_t  opt = 0, Int_t  bufsiz = 0  )

inlinevirtual

Write memory objects to this file.

Loop on all objects in memory (including subdirectories). A new key is created in the KEYS linked list for each object. The list of keys is then saved on the file (via WriteKeys) as a single data record. For values of opt see TObject::Write(). The directory header info is rewritten on the directory header record. The linked list of FREE segments is written. The file header is written (bytes 1->fBEGIN).

Reimplemented from TFile.

Definition at line 95 of file TXMLFile.h.

Write() [2/2]

virtual Int_t TXMLFile::Write ( const char *  name = 0, Int_t  opt = 0, Int_t  bufsiz = 0  ) const

inlinevirtual

One can not save a const TDirectory object.

Reimplemented from TFile.

Definition at line 96 of file TXMLFile.h.

WriteBuffer()

virtual Bool_t TXMLFile::WriteBuffer ( const char *  buf, Int_t  len  )

inlinevirtual

Write a buffer to the file.

This is the basic low level write operation. Returns kTRUE in case of failure.

Reimplemented from TFile.

Definition at line 94 of file TXMLFile.h.

WriteFree()

virtual void TXMLFile::WriteFree ( )

inlinevirtual

Write FREE linked list on the file.

The linked list of FREE segments (fFree) is written as a single data record.

Reimplemented from TFile.

Definition at line 97 of file TXMLFile.h.

WriteHeader()

virtual void TXMLFile::WriteHeader ( )

inlinevirtual

Write File Header.

Reimplemented from TFile.

Definition at line 98 of file TXMLFile.h.

WriteStreamerInfo()

void TXMLFile::WriteStreamerInfo ( )

virtual

convert all TStreamerInfo, used in file, to xml format

Reimplemented from TFile.

Definition at line 677 of file TXMLFile.cxx.

XML()

TXMLEngine * TXMLFile::XML ( )

inline

Definition at line 113 of file TXMLFile.h.

Member Data Documentation

fDoc

XMLDocPointer_t TXMLFile::fDoc

protected

Definition at line 131 of file TXMLFile.h.

fIOVersion

Int_t TXMLFile::fIOVersion

protected

object for interface with xml library

Definition at line 137 of file TXMLFile.h.

fKeyCounter

Long64_t TXMLFile::fKeyCounter

protected

indicates format of ROOT xml file

Definition at line 139 of file TXMLFile.h.

fStreamerInfoNode

XMLNodePointer_t TXMLFile::fStreamerInfoNode

protected

Definition at line 133 of file TXMLFile.h.

fXML

TXMLEngine* TXMLFile::fXML

protected

pointer of node with streamer info data

Definition at line 135 of file TXMLFile.h.

Libraries for TXMLFile:

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