SqField.h

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#ifndef __DCL_SQ_FIELD_H__
#define __DCL_SQ_FIELD_H__      20260117
 
__DCL_BEGIN_NAMESPACE
 
class OutputStream;
 
class SqField : public SQL::Field
{
    DECLARE_CLASSINFO(SqField)
protected:
    int         __index;        // 0, 1, 2, ...
    String      __declType;
    size_t      __maxsize;
 
protected:
    SqQuery* query() const;
    SqConnection* conn() const;
 
public:
    SqField();
    virtual ~SqField();
 
    bool init(SQL::Query* _query, int _index);
 
    // interfaces
    virtual const wchar_t* serverDataTypeName() const;
    virtual bool __getDataSize(size_t* _size, bool _maxsize);
 
    virtual bool __getData(
        void* _buf,
        size_t* _size,
        SQL::DataType  _bufType
    );
 
protected:
    // implementation
    bool getInteger(void* _buf, size_t* _size);
    bool getUInteger(void* _buf, size_t* _size);
    bool getFloat(void* _buf, size_t* _size);
    bool getDate(SQL::Date* _buf, size_t* _size);
    bool getTime(SQL::Time* _buf, size_t* _size);
    bool getTimeStamp(SQL::TimeStamp* _buf, size_t* _size);
    bool getInterval(SQL::Interval* _buf, size_t* _size);
    bool getNumeric(char* _buf, size_t* _size);
    bool getBytes(char* _buf, size_t* _size);
    bool writeTo(OutputStream* _output, size_t* _size);
};
 
inline SqQuery* SqField::query() const 
{ 
    return (SqQuery*)Field::__queryHandle; 
}
 
inline SqConnection* SqField::conn() const
{
    return query()->conn();
}
 
__DCL_END_NAMESPACE
 
#endif  // __DCL_SQ_FIELD_H__