IFXField.h

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#ifndef __DCL_INFORMIX_FIELD_H__
#define __DCL_INFORMIX_FIELD_H__    20030717
 
__DCL_BEGIN_NAMESPACE
 
#define __USE_IFX_VAR   0
 
class IFXField : public SQL::Field
{
    DECLARE_CLASSINFO(IFXField)
protected:
    ifx_sqlvar_t*   __sqlvar;
    short int   __indicator;
 
    size_t      __maxDataSize;
    size_t      __dataSize; // for SQLDECIMAL, SQLVCHAR, SQLNCHAR
 
protected:
    void setErrorStatus(SQL::Error _error, long _SQLCODE,   
            const wchar_t* _filename, int _line);
    void setErrorStatus(const ByteString& _message,
            const wchar_t* _filename, int _line);
 
    IFXQuery* query() const;
 
public:
    IFXField();
    virtual ~IFXField();
 
    bool init(SQL::Query* _query, ifx_sqlvar_t* _sqlvar);
    bool onAfterFetch();
 
    // interfaces
    virtual bool isNull() const;
    virtual const wchar_t* serverDataTypeName() const;
    virtual bool __getDataSize(size_t* _size, bool _maxSize);
    virtual bool __getData(void* _pv, size_t* _size, SQL::DataType _dataType);
 
protected:
    // implementation
    bool getInteger(void* _pv, size_t* _size);
    bool getUInteger(void* _pv, size_t* _size);
    bool getFloat(void* _pv, size_t* _size);
};
 
 
inline void IFXField::setErrorStatus(SQL::Error _error, long _SQLCODE,    
        const wchar_t* _filename, int _line)
{
    ((IFXConnection*)Field::connection())->setErrorStatus(
            _error,
            _SQLCODE,
            _filename,
            _line
            );
}
 
inline void IFXField::setErrorStatus(const ByteString& _message,
        const wchar_t* _filename, int _line)
{
    ((IFXConnection*)Field::connection())->setErrorStatus(
            _message,
            _filename,
            _line
            );
}
 
inline IFXQuery* IFXField::query() const 
{ 
    return (IFXQuery*)Field::__queryHandle; 
}
 
__DCL_END_NAMESPACE
 
#endif  // __DCL_INTERBASE_FIELD_H__