# DataExchange
TKXSBase
IFSelect

# IFSelect_SessionFile Class Reference

A SessionFile is intended to manage access between a
WorkSession and an Ascii Form, to be considered as a Dump.
It allows to write the File from the WorkSession, and later
read the File to the WorkSession, by keeping required
descriptions (such as dependances).
The produced File is under an Ascii Form, then it may be
easily consulted.
It is possible to cumulate reading of several Files. But in
case of Names conflict, the newer Names are forgottens.
The Dump supports the description of XSTEP functionnalities
(Sharing an Interface File, with Selections, Dispatches,
Modifiers ...) but does not refer to the Interface File
which is currently loaded.
SessionFile works with a library of SessionDumper type objects
The File is Produced as follows :
SessionFile produces all general Informations (such as Int and
Text Parameters, Types and Inputs of Selections, Dispatches,
Modifiers ...) and calls the SessionDumpers to produce all
the particular Data : creation arguments, parameters to be set
It is Read in the same terms :
SessionFile reads and interprets all general Informations,
and calls the SessionDumpers to recognize Types and for a
recognized Type create the corresponding Object with its
particular parameters as they were written.
The best way to work is to have one SessionDumper for each
consistent set of classes (e.g. a package).
.

`#include <IFSelect_SessionFile.hxx>`

## Public Member Functions

void * | operator new (size_t, void *anAddress)
void * | operator new (size_t size)
void | operator delete (void *anAddress)
Standard_EXPORT | IFSelect_SessionFile (const Handle(IFSelect_WorkSession)&WS)
| Creates a SessionFile, ready to read Files in order to load them into a given WorkSession. The following Read Operations must then be called. It is also possible to perform a Write, which produces a complete File of all the content of the WorkSession. .
Standard_EXPORT | IFSelect_SessionFile (const Handle(IFSelect_WorkSession)&WS, const Standard_CString filename)
| Creates a SessionFile which Writes the content of a WorkSession to a File (directly calls Write) Then, IsDone aknowledges on the result of the Operation. But such a SessionFile may not Read a File to a WorkSession. .
Standard_EXPORT void | ClearLines ()
| Clears the lines recorded whatever for writing or for reading .
Standard_EXPORT Standard_Integer | NbLines () const
| Returns the count of recorded lines .
Standard_EXPORT const TCollection_AsciiString & | Line (const Standard_Integer num) const
| Returns a line given its rank in the list of recorded lines .
Standard_EXPORT void | AddLine (const Standard_CString line)
| Adds a line to the list of recorded lines .
Standard_EXPORT void | RemoveLastLine ()
| Removes the last line. Can be called recursively. Does nothing if the list is empty .
Standard_EXPORT Standard_Boolean | WriteFile (const Standard_CString name)
| Writes the recorded lines to a file named <name> then clears the list of lines. Returns False (with no clearing) if the file could not be created .
Standard_EXPORT Standard_Boolean | ReadFile (const Standard_CString name)
| Reads the recorded lines from a file named <name>, after having cleared the list (stops if RecognizeFile fails) Returns False (with no clearing) if the file could not be read .
Standard_EXPORT Standard_Boolean | RecognizeFile (const Standard_CString headerline)
| Recognizes the header line. returns True if OK, False else .
Standard_EXPORT Standard_Integer | Write (const Standard_CString filename)
| Performs a Write Operation from a WorkSession to a File i.e. calls WriteSession then WriteEnd, and WriteFile Returned Value is : 0 for OK, -1 File could not be created, >0 Error during Write (see WriteSession) IsDone can be called too (will return True for OK) .
Standard_EXPORT Standard_Integer | Read (const Standard_CString filename)
| Performs a Read Operation from a file to a WorkSession i.e. calls ReadFile, then ReadSession and ReadEnd Returned Value is : 0 for OK, -1 File could not be opened, >0 Error during Read (see WriteSession) IsDone can be called too (will return True for OK) .
Standard_EXPORT Standard_Integer | WriteSession ()
| Prepares the Write operation from a WorkSession (IFSelect) to a File, i.e. fills the list of lines (the file itself remains to be written; or NbLines/Line may be called) Important Remark : this excludes the reading of the last line, which is performed by WriteEnd Returns 0 if OK, status > 0 in case of error .
Standard_EXPORT Standard_Integer | WriteEnd ()
| Writes the trailing line. It is separate from WriteSession, in order to allow to redefine WriteSession without touching WriteEnd (WriteSession defines the body of the file) WriteEnd fills the list of lines. Returns a status of error, 0 if OK, >0 else .
Standard_EXPORT void | WriteLine (const Standard_CString line, const Standard_Character follow=0)
| Writes a line to the File. If <follow> is given, it is added at the following of the line. ' ' must be added for the end. .
Standard_EXPORT Standard_Boolean | WriteOwn (const Handle(Standard_Transient)&item)
| Writes the Parameters own to each type of Item. Uses the Library of SessionDumpers Returns True if Done, False if <item> could not be treated (hence it remains written with no Own Parameter) .
Standard_EXPORT Standard_Integer | ReadSession ()

Performs a Read Operation from a File to a WorkSession, i.e.
reads the list of line (which must have already been loaded,
by ReadFile or by calls to AddLine)
Important Remark : this excludes the reading of the last line,
which is performed by ReadEnd
Returns 0 for OK, >0 status for Read Error (not a suitable
File, or WorkSession given as Immutable at Creation Time)
IsDone can be called too (will return True for OK)
.

Standard_EXPORT Standard_Integer | ReadEnd ()
| Reads the end of a file (its last line). Returns 0 if OK, status >0 in case of error (not a suitable end line). .
Standard_EXPORT Standard_Boolean | ReadLine ()
| Reads a Line and splits it into a set of alphanumeric items, which can then be queried by NbParams/ParamValue ... .
Standard_EXPORT void | SplitLine (const Standard_CString line)
| Internal routine which processes a line into words and prepares its exploration .
Standard_EXPORT Standard_Boolean | ReadOwn (Handle(Standard_Transient)&item)
| Tries to Read an Item, by calling the Library of Dumpers Sets the list of parameters of the line to be read from the first own one .
Standard_EXPORT void | AddItem (const Handle(Standard_Transient)&item, const Standard_Boolean active=Standard_True)
| Adds an Item to the WorkSession, taken as Name the first item of the read Line. If this Name is not a Name but a Number or if this Name is already recorded in the WorkSession, it adds the Item but with no Name. Then the Name is recorded in order to be used by the method ItemValue <active> commands to make <item> active or not in the session .
Standard_EXPORT Standard_Boolean | IsDone () const
| Returns True if the last Read or Write operation has been corectly performed. ELse returns False. .
Standard_EXPORT Handle_IFSelect_WorkSession | WorkSession () const
| Returns the WorkSession on which a SessionFile works. Remark that it is returned as Immutable. .
Standard_EXPORT void | NewItem (const Standard_Integer ident, const Handle(Standard_Transient)&par)
| At beginning of writing an Item, writes its basics : - either its name in the session if it has one - or its relative number of item in the file, else (preceeded by a '_') - then, its Dynamic Type (in the sense of cdl : pk_class) This basic description can be followed by the parameters which are used in the definition of the item. .
Standard_EXPORT void | SetOwn (const Standard_Boolean mode)
| Sets Parameters to be sent as Own if <mode> is True (their Name or Number or Void Mark or Text Value is preceeded by a Column sign ':') else they are sent normally Hence, the Own Parameter are clearly identified in the File .
Standard_EXPORT void | SendVoid ()
| During a Write action, commands to send a Void Parameter i.e. a Parameter which is present but undefined Its form will be the dollar sign : $ .
Standard_EXPORT void | SendItem (const Handle(Standard_Transient)&par)
| During a Write action, commands to send the identification of a Parameter : if it is Null (undefined) it is send as Void ($) if it is Named in the WorkSession, its Name is sent preceeded by ':', else a relative Ident Number is sent preceeded by '#' (relative to the present Write, i.e. starting at one, without skip, and counted part from Named Items) .
Standard_EXPORT void | SendText (const Standard_CString text)
| During a Write action, commands to send a Text without interpretation. It will be sent as well .
Standard_EXPORT void | SetLastGeneral (const Standard_Integer lastgen)
| Sets the rank of Last General Parameter to a new value. It is followed by the Fist Own Parameter of the item. Used by SessionFile after reading general parameters. .
Standard_EXPORT Standard_Integer | NbParams () const
| During a Read operation, SessionFile processes sequencially the Items to read. For each one, it gives access to the list of its Parameters : they were defined by calls to SendVoid/SendParam/SendText during Writing the File. NbParams returns the count of Parameters for the line currently read. .
Standard_EXPORT Standard_Boolean | IsVoid (const Standard_Integer num) const
| Returns True if a Parameter, given its rank in the Own List (see NbOwnParams), is Void. Returns also True if <num> is out of range (undefined parameters) .
Standard_EXPORT Standard_Boolean | IsText (const Standard_Integer num) const
| Returns True if a Parameter, in the Own List (see NbOwnParams) is a Text (between "..."). Else it is an Item (Parameter, Selection, Dispatch ...), which can be Void. .
Standard_EXPORT const TCollection_AsciiString & | ParamValue (const Standard_Integer num) const
| Returns a Parameter (alphanumeric item of a line) as it has been read .
Standard_EXPORT TCollection_AsciiString | TextValue (const Standard_Integer num) const
| Returns the content of a Text Parameter (without the quotes). Returns an empty string if the Parameter is not a Text. .
Standard_EXPORT Handle_Standard_Transient | ItemValue (const Standard_Integer num) const
| Returns a Parameter as an Item. Returns a Null Handle if the Parameter is a Text, or if it is defined as Void .
Standard_EXPORT void | Destroy ()
| Specific Destructor (closes the File if not yet done) .
| ~IFSelect_SessionFile ()

## Protected Attributes

Handle_IFSelect_WorkSession | thesess
Handle_TColStd_HArray1OfInteger | thenums
Handle_Dico_DictionaryOfInteger | thenames
Standard_Integer | thenl
TColStd_SequenceOfAsciiString | theline

## Private Attributes

Standard_Boolean | themode
TColStd_SequenceOfAsciiString | thelist
TCollection_AsciiString | thebuff
Standard_Integer | thelastgen
Standard_Boolean | thedone
Standard_Boolean | theownflag
Standard_Integer | thenewnum

## Constructor & Destructor Documentation

Standard_EXPORT IFSelect_SessionFile::IFSelect_SessionFile | ( | const Handle(IFSelect_WorkSession)& | WS | ) |

Standard_EXPORT IFSelect_SessionFile::IFSelect_SessionFile | ( | const Handle(IFSelect_WorkSession)& | WS,
|  | const Standard_CString | filename
| ) |

IFSelect_SessionFile::~IFSelect_SessionFile | ( |  | ) | `[inline]`

## Member Function Documentation

Standard_EXPORT void IFSelect_SessionFile::AddItem | ( | const Handle(Standard_Transient)& | item,
|  | const Standard_Boolean | active = `Standard_True`
| ) |

Standard_EXPORT void IFSelect_SessionFile::AddLine | ( | const Standard_CString | line | ) |

Standard_EXPORT void IFSelect_SessionFile::ClearLines | ( |  | ) |

Standard_EXPORT void IFSelect_SessionFile::Destroy | ( |  | ) |

Standard_EXPORT Standard_Boolean IFSelect_SessionFile::IsDone | ( |  | ) | const

Standard_EXPORT Standard_Boolean IFSelect_SessionFile::IsText | ( | const Standard_Integer | num | ) | const

Standard_EXPORT Standard_Boolean IFSelect_SessionFile::IsVoid | ( | const Standard_Integer | num | ) | const

Standard_EXPORT Handle_Standard_Transient IFSelect_SessionFile::ItemValue | ( | const Standard_Integer | num | ) | const

Standard_EXPORT const TCollection_AsciiString& IFSelect_SessionFile::Line | ( | const Standard_Integer | num | ) | const

Standard_EXPORT Standard_Integer IFSelect_SessionFile::NbLines | ( |  | ) | const

Standard_EXPORT Standard_Integer IFSelect_SessionFile::NbParams | ( |  | ) | const

Standard_EXPORT void IFSelect_SessionFile::NewItem | ( | const Standard_Integer | ident,
|  | const Handle(Standard_Transient)& | par
| ) |

void IFSelect_SessionFile::operator delete | ( | void * | anAddress | ) | `[inline]`

void* IFSelect_SessionFile::operator new | ( | size_t | size | ) | `[inline]`

void* IFSelect_SessionFile::operator new | ( | size_t | ,
|  | void * | anAddress
| ) | `[inline]`

Standard_EXPORT const TCollection_AsciiString& IFSelect_SessionFile::ParamValue | ( | const Standard_Integer | num | ) | const

Standard_EXPORT Standard_Integer IFSelect_SessionFile::Read | ( | const Standard_CString | filename | ) |

Standard_EXPORT Standard_Integer IFSelect_SessionFile::ReadEnd | ( |  | ) |

Standard_EXPORT Standard_Boolean IFSelect_SessionFile::ReadFile | ( | const Standard_CString | name | ) |

Standard_EXPORT Standard_Boolean IFSelect_SessionFile::ReadLine | ( |  | ) |

Standard_EXPORT Standard_Boolean IFSelect_SessionFile::ReadOwn | ( | Handle(Standard_Transient)& | item | ) |

Standard_EXPORT Standard_Integer IFSelect_SessionFile::ReadSession | ( |  | ) |

Standard_EXPORT Standard_Boolean IFSelect_SessionFile::RecognizeFile | ( | const Standard_CString | headerline | ) |

Standard_EXPORT void IFSelect_SessionFile::RemoveLastLine | ( |  | ) |

Standard_EXPORT void IFSelect_SessionFile::SendItem | ( | const Handle(Standard_Transient)& | par | ) |

Standard_EXPORT void IFSelect_SessionFile::SendText | ( | const Standard_CString | text | ) |

Standard_EXPORT void IFSelect_SessionFile::SendVoid | ( |  | ) |

Standard_EXPORT void IFSelect_SessionFile::SetLastGeneral | ( | const Standard_Integer | lastgen | ) |

Standard_EXPORT void IFSelect_SessionFile::SetOwn | ( | const Standard_Boolean | mode | ) |

Standard_EXPORT void IFSelect_SessionFile::SplitLine | ( | const Standard_CString | line | ) |

Standard_EXPORT TCollection_AsciiString IFSelect_SessionFile::TextValue | ( | const Standard_Integer | num | ) | const

Standard_EXPORT Handle_IFSelect_WorkSession IFSelect_SessionFile::WorkSession | ( |  | ) | const

Standard_EXPORT Standard_Integer IFSelect_SessionFile::Write | ( | const Standard_CString | filename | ) |

Standard_EXPORT Standard_Integer IFSelect_SessionFile::WriteEnd | ( |  | ) |

Standard_EXPORT Standard_Boolean IFSelect_SessionFile::WriteFile | ( | const Standard_CString | name | ) |

Standard_EXPORT void IFSelect_SessionFile::WriteLine | ( | const Standard_CString | line,
|  | const Standard_Character | follow = `0`
| ) |

Standard_EXPORT Standard_Boolean IFSelect_SessionFile::WriteOwn | ( | const Handle(Standard_Transient)& | item | ) |

Standard_EXPORT Standard_Integer IFSelect_SessionFile::WriteSession | ( |  | ) |

## Field Documentation

TCollection_AsciiString IFSelect_SessionFile::thebuff`[private]`

Standard_Boolean IFSelect_SessionFile::thedone`[private]`

Standard_Integer IFSelect_SessionFile::thelastgen`[private]`

TColStd_SequenceOfAsciiString IFSelect_SessionFile::theline`[protected]`

TColStd_SequenceOfAsciiString IFSelect_SessionFile::thelist`[private]`

Standard_Boolean IFSelect_SessionFile::themode`[private]`

Handle_Dico_DictionaryOfInteger IFSelect_SessionFile::thenames`[protected]`

Standard_Integer IFSelect_SessionFile::thenewnum`[private]`

Standard_Integer IFSelect_SessionFile::thenl`[protected]`

Handle_TColStd_HArray1OfInteger IFSelect_SessionFile::thenums`[protected]`

Standard_Boolean IFSelect_SessionFile::theownflag`[private]`

Handle_IFSelect_WorkSession IFSelect_SessionFile::thesess`[protected]`

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

- IFSelect_SessionFile.hxx