Open CASCADE Technology 6.6.0
Public Member Functions
IGESData_ReadWriteModule Class Reference

Defines basic File Access Module, under the control of
IGESReaderTool for Reading and IGESWriter for Writing :
Specific actions concern : Read and Write Own Parameters of
an IGESEntity.
The common parts (Directory Entry, Lists of Associativities
and Properties) are processed by IGESReaderTool & IGESWriter

Each sub-class of ReadWriteModule is used in conjunction with
a sub-class of Protocol from IGESData and processes several
types of IGESEntity (typically, them of a package) :
The Protocol gives a unique positive integer Case Number for
each type of IGESEntity it recognizes, the corresponding
ReadWriteModule processes an Entity by using the Case Number
to known what is to do
On Reading, the general service NewVoid is used to create an
IGES Entity the first time

Warning : Works with an IGESReaderData which stores "DE parts" of Items

#include <IGESData_ReadWriteModule.hxx>

Inheritance diagram for IGESData_ReadWriteModule:
Inheritance graph
[legend]

Public Member Functions

Standard_Integer CaseNum (const Handle< Interface_FileReaderData > &data, const Standard_Integer num) const
 Translates the Type of record <num> in <data> to a positive
Case Number, or 0 if failed.
Works with IGESReaderData which provides Type & Form Numbers,
and calls CaseIGES (see below)

virtual Standard_Integer CaseIGES (const Standard_Integer typenum, const Standard_Integer formnum) const =0
 Defines Case Numbers corresponding to the Entity Types taken
into account by a sub-class of ReadWriteModule (hence, each
sub-class of ReadWriteModule has to redefine this method)
Called by CaseNum. Its result will then be used to call
Read, etc ...

void Read (const Standard_Integer CN, const Handle< Interface_FileReaderData > &data, const Standard_Integer num, Handle< Interface_Check > &ach, const Handle< Standard_Transient > &ent) const
 General Read Function. See IGESReaderTool for more info

virtual void ReadOwnParams (const Standard_Integer CN, const Handle< IGESData_IGESEntity > &ent, const Handle< IGESData_IGESReaderData > &IR, IGESData_ParamReader &PR) const =0
 Reads own parameters from file for an Entity; <PR> gives
access to them, <IR> detains parameter types and values
For each class, there must be a specific action provided
Note that Properties and Associativities Lists are Read by
specific methods (see below), they are called under control
of reading process (only one call) according Stage recorded
in ParamReader

virtual void WriteOwnParams (const Standard_Integer CN, const Handle< IGESData_IGESEntity > &ent, IGESData_IGESWriter &IW) const =0
 Writes own parameters to IGESWriter; defined for each class
(to be redefined for other IGES ReadWriteModules)
Warning : Properties and Associativities are directly managed by
WriteIGES, must not be sent by this method


Member Function Documentation

virtual Standard_Integer IGESData_ReadWriteModule::CaseIGES ( const Standard_Integer  typenum,
const Standard_Integer  formnum 
) const [pure virtual]
Standard_Integer IGESData_ReadWriteModule::CaseNum ( const Handle< Interface_FileReaderData > &  data,
const Standard_Integer  num 
) const [virtual]
void IGESData_ReadWriteModule::Read ( const Standard_Integer  CN,
const Handle< Interface_FileReaderData > &  data,
const Standard_Integer  num,
Handle< Interface_Check > &  ach,
const Handle< Standard_Transient > &  ent 
) const [virtual]
virtual void IGESData_ReadWriteModule::ReadOwnParams ( const Standard_Integer  CN,
const Handle< IGESData_IGESEntity > &  ent,
const Handle< IGESData_IGESReaderData > &  IR,
IGESData_ParamReader PR 
) const [pure virtual]
virtual void IGESData_ReadWriteModule::WriteOwnParams ( const Standard_Integer  CN,
const Handle< IGESData_IGESEntity > &  ent,
IGESData_IGESWriter IW 
) const [pure virtual]

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