IBField.h

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#ifndef __DCL_INTERBASE_FIELD_H__
#define __DCL_INTERBASE_FIELD_H__   20020321
 
__DCL_BEGIN_NAMESPACE
 
class IBField : public SQL::Field
{
    DECLARE_CLASSINFO(IBField)
protected:
    XSQLVAR*    __sqlvar;
    short       __indicator;
 
    size_t      __maxDataSize;
    size_t      __dataSize; // for BLOB
 
protected:
    void setErrorStatus(SQL::Error _error,
                const wchar_t* _filename, int _line);
    void setErrorStatus(const ByteString _message,
                const wchar_t* _filename, int _line);
 
    IBQuery* query() const;
 
public:
    IBField();
    virtual ~IBField();
 
    bool init(SQL::Query* _query, XSQLVAR* _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);
    bool getDate(SQL::Date* p, size_t* _size);
    bool getTime(SQL::Time* p, size_t* _size);
    bool getTimeStamp(SQL::TimeStamp* p, size_t* _size);
    bool getDecimal(char* p, size_t* _size);
    bool getBytes(byte_t* p, size_t* _size);
    bool writeTo(OutputStream* p, size_t* _size);
 
    bool getBlobInfo(isc_blob_handle* phBlob, char blob_info_item, size_t* pn);
    bool getBytesFromBlob(byte_t* p, size_t* _size);
    bool writeToFromBlob(OutputStream* p, size_t* _size);
};
 
inline void IBField::setErrorStatus(SQL::Error _error,
        const wchar_t* _filename, int _line)
{
    ((IBConnection*)Field::connection())
        ->setErrorStatus(_error, _filename, _line);
}
 
inline void IBField::setErrorStatus(const ByteString _message,
        const wchar_t* _filename, int _line)
{
    ((IBConnection*)Field::connection())
        ->setErrorStatus(_message, _filename, _line);
}
 
inline IBQuery* IBField::query() const 
{ 
    return (IBQuery*)Field::__queryHandle; 
}
 
__DCL_END_NAMESPACE
 
#endif  // __DCL_INTERBASE_FIELD_H__