sdaiCreateADB

valueType argument to specify what type of data caller wants to put Table 1 shows type of buffer the caller should provide depending on the valueType for sdaiCreateADB, and it works similarly for all put-functions. Note: with SDAI API it is impossible to check buffer type at compilation or execution time and this is responsibility of a caller to ensure that requested valueType is matching with the value argument, a mismatch will lead to unpredictable results.

Table 1 � Required value buffer depending on valueType (on the example of sdaiCreateADB but valid for all put-functions)

valueType               C/C++                                                       C#

sdaiINTEGER             int_t val = 123;                                            int_t val = 123;
                        SdaiADB adb = sdaiCreateADB (sdaiINTEGER, &val);            int_t adb = ifcengine.sdaiCreateADB (ifcengine.sdaiINTEGER, ref val);

sdaiREAL or sdaiNUMBER  double val = 123.456;                                       double val = 123.456;
                        SdaiADB adb = sdaiCreateADB (sdaiREAL, &val);               int_t adb = ifcengine.sdaiCreateADB (ifcengine.sdaiREAL, ref val);

sdaiBOOLEAN             bool val = true;                                            bool val = true;
                        SdaiADB adb = sdaiCreateADB (sdaiBOOLEAN, &val);            int_t adb = ifcengine.sdaiCreateADB (ifcengine.sdaiBOOLEAN, ref val);

sdaiLOGICAL             const TCHAR* val = "U";                                     string val = "U";
                        SdaiADB adb = sdaiCreateADB (sdaiLOGICAL, val);             int_t adb = ifcengine.sdaiCreateADB (ifcengine.sdaiLOGICAL, val);

sdaiENUM                const TCHAR* val = "NOTDEFINED";                            string val = "NOTDEFINED";
                        SdaiADB adb = sdaiCreateADB (sdaiENUM, val);                int_t adb = ifcengine.sdaiCreateADB (ifcengine.sdaiENUM, val);

sdaiBINARY              const TCHAR* val = "0123456ABC";                            string val = "0123456ABC";
                        SdaiADB adb = sdaiCreateADB (sdaiBINARY, val);              int_t adb = ifcengine.sdaiCreateADB (ifcengine.sdaiBINARY, val);

sdaiSTRING              const char* val = "My Simple String";                       string val = "My Simple String";
                        SdaiADB adb = sdaiCreateADB (sdaiSTRING, val);              int_t adb = ifcengine.sdaiCreateADB (ifcengine.sdaiSTRING, val);

sdaiUNICODE             const wchar_t* val = L"Any Unicode String";                 string val = "Any Unicode String";
                        SdaiADB adb = sdaiCreateADB (sdaiUNICODE, val);             int_t adb = ifcengine.sdaiCreateADB (ifcengine.sdaiUNICODE, val);

sdaiEXPRESSSTRING       const char* val = "EXPRESS format, i.e. \\X2\\00FC\\X0\\";  string val = "EXPRESS format, i.e. \\X2\\00FC\\X0\\";
                        SdaiADB adb = sdaiCreateADB (sdaiEXPRESSSTRING, val);       int_t adb = ifcengine.sdaiCreateADB (ifcengine.sdaiEXPRESSSTRING, val);

sdaiINSTANCE            SdaiInstance val = sdaiCreateInstanceBN (model, "IFCSITE"); int_t val = ifcengine.sdaiCreateInstanceBN (model, "IFCSITE");
                        SdaiADB adb = sdaiCreateADB (sdaiINSTANCE, val);            int_t adb = ifcengine.sdaiCreateADB (ifcengine.sdaiINSTANCE, val);

sdaiAGGR                SdaiAggr val = sdaiCreateAggr (inst, 0);                    int_t val = sdaiCreateAggr (inst, 0);
                        sdaiAppend (val, sdaiINSTANCE, inst);                       ifcengine.sdaiAppend (val, ifcengine.sdaiINSTANCE, inst);
                        SdaiADB adb = sdaiCreateADB (sdaiAGGR, val);                int_t adb = ifcengine.sdaiCreateADB (ifcengine.sdaiAGGR, val);

sdaiADB                 not applicable

TCHAR is �char� or �wchar_t� depending on setStringUnicode. (Non-standard behavior) sdaiLOGICAL behaves differently from ISO 10303-24-2001: it expects char* while standard declares int_t (Non-standard extension) sdiADB in C++ has an option to work without sdaiCreateEmptyADB and sdaiDeleteADB as shown in the table

Table 2 - valueType can be requested depending on actual model data.

valueType       Works for following values in the model
                  integer      real     .T. or .F.     .U.      other enum    binary      string     instance      list      $ (empty)
sdaiINTEGER         Yes          .           .           .           .           .           .           .           .           .
sdaiREAL             .          Yes          .           .           .           .           .           .           .           .
sdaiNUMBER           .          Yes          .           .           .           .           .           .           .           .
sdaiBOOLEAN          .           .          Yes          .           .           .           .           .           .           .
sdaiLOGICAL          .           .          Yes         Yes          .           .           .           .           .           .
sdaiENUM             .           .          Yes         Yes         Yes          .           .           .           .           .
sdaiBINARY           .           .           .           .           .          Yes          .           .           .           .
sdaiSTRING           .           .           .           .           .           .          Yes          .           .           .
sdaiUNICODE          .           .           .           .           .           .          Yes          .           .           .
sdaiEXPRESSSTRING    .           .           .           .           .           .          Yes          .           .           .
sdaiINSTANCE         .           .           .           .           .           .           .          Yes          .           .
sdaiAGGR             .           .           .           .           .           .           .           .          Yes          .
sdaiADB              .           .           .           .           .           .           .           .           .           .

Syntax

//
//   Strong typing definition
//
SdaiADB         sdaiCreateADB(
                        SdaiPrimitiveType       valueType,
                        const void              * value
                    );

static  inline  SdaiADB sdaiCreateADB(
                                SdaiPrimitiveType       valueType,
                                SdaiInstance            value
                            )
{
    return  sdaiCreateADB(
                    valueType,
                    (const void*) value
                );
}


//
//   Weak typing definition
//
void    __declspec(dllexport) * __stdcall   sdaiCreateADB(
                                                    int_t                   valueType,
                                                    const void              * value
                                                );

static  inline  void    * sdaiCreateADB(
                                int_t                   valueType,
                                int_t                   value
                            )
{
    return  sdaiCreateADB(
                    valueType,
                    (const void*) value
                );
}

Property valueType

Size: 32 bit / 4 byte (value)
...

Property value

Size: 32 bit / 4 byte (reference)
...

Example (based on pure API calls)

Here you can find code snippits that show how the API call sdaiCreateADB can be used.

#include    "./include/ifcengine.h"
//
//  #13131 = IFCMEASUREWITHUNIT(IFCPLANEANGLEMEASURE(1.745E-2), #31313);
//  #31313 = IFCSIUNIT(*, .PLANEANGLEUNIT., $, .RADIAN.);
//

int_t   buildSIUnitInstance(int_t model, char * UnitType, char * Prefix, char * Name)
{
    //  #31313 = IFCSIUNIT(*, .PLANEANGLEUNIT., $, .RADIAN.);
    int_t   ifcSIUnitInstance = sdaiCreateInstanceBN(model, "IFCSIUNIT");

    sdaiPutAttrBN(ifcSIUnitInstance, "UnitType", sdaiENUM, UnitType);
    if  (Prefix) {
        sdaiPutAttrBN(ifcSIUnitInstance, "Prefix", sdaiENUM, Prefix);
    }
    sdaiPutAttrBN(ifcSIUnitInstance, "Name", sdaiENUM, Name);

    return  ifcSIUnitInstance;
}

int_t   buildMeasureWithUnitInstance(int_t model)
{
    void    * valueComponentADB;
    double  valueComponent= 0.01745;

    //  #13131 = IFCMEASUREWITHUNIT(IFCPLANEANGLEMEASURE(1.745E-2), #31313);
    int_t   ifcMeasureWithUnitInstance = sdaiCreateInstanceBN(model, "IFCMEASUREWITHUNIT");

    valueComponentADB = sdaiCreateADB(sdaiREAL, &valueComponent);
    sdaiPutADBTypePath(valueComponentADB, 1, "IFCPLANEANGLEMEASURE"); 
    sdaiPutAttrBN(ifcMeasureWithUnitInstance, "ValueComponent", sdaiADB, (void*) valueComponentADB);

    sdaiPutAttrBN(ifcMeasureWithUnitInstance, "UnitComponent", sdaiINSTANCE, (void*) buildSIUnitInstance(model, "PLANEANGLEUNIT", 0, "RADIAN"));

    return  ifcMeasureWithUnitInstance;
}