func (c *Conn) PrepareODBCStmt(query string) (*ODBCStmt, error) {
var out api.SQLHANDLE
ret := api.SQLAllocHandle(api.SQL_HANDLE_STMT, api.SQLHANDLE(c.h), &out)
if IsError(ret) {
return nil, NewError("SQLAllocHandle", c.h)
}
h := api.SQLHSTMT(out)
drv.Stats.updateHandleCount(api.SQL_HANDLE_STMT, 1)
b := api.StringToUTF16(query)
ret = api.SQLPrepare(h,
(*api.SQLWCHAR)(unsafe.Pointer(&b[0])), api.SQLINTEGER(len(b)))
if IsError(ret) {
defer releaseHandle(h)
return nil, NewError("SQLPrepare", h)
}
ps, err := ExtractParameters(h)
if err != nil {
defer releaseHandle(h)
return nil, err
}
return &ODBCStmt{
h: h,
Parameters: ps,
usedByStmt: true,
}, nil
}
func (s *ODBCStmt) releaseHandle() error {
h := s.h
s.h = api.SQLHSTMT(api.SQL_NULL_HSTMT)
return releaseHandle(h)
}