IBField.h

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#ifndef __DCL_IB_FIELD_H__
#define __DCL_IB_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:
    IBQuery* query() const;
    IBConnection* conn() const;
 
public:
    IBField();
    virtual ~IBField();
 
    bool init(SQL::Query* _query, XSQLVAR* _sqlvar);
    bool onAfterFetch();
 
    // 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 getDecimal(char* _buf, size_t* _size);
    bool getBytes(byte_t* _buf, size_t* _size);
    bool writeTo(OutputStream* _output, size_t* _size);
 
    bool getBlobInfo(
        isc_blob_handle* _blobHandle,
        char _blob_info_item, size_t* _buf
    );
    bool getBytesFromBlob(byte_t* _buf, size_t* _size);
    bool writeToFromBlob(OutputStream* _output, size_t* _size);
};
 
inline IBQuery* IBField::query() const 
{ 
    return (IBQuery*)Field::__queryHandle; 
}
 
inline IBConnection* IBField::conn() const
{
    return query()->conn();
}
 
const wchar_t* __dataTypeName(const XSQLVAR* _sqlvar);
 
__DCL_END_NAMESPACE
 
#endif  // __DCL_IB_FIELD_H__