o go+@s~ddlmZddlZddlmZddlZddlm Z ddl m Z ddl m Z GdddZGdd d eZGd d d eZdS) ) annotationsN)ceil)abort)requestc@seZdZdZ     d?d@ddZeddddddAddZedBddZdCddZ dBddZ edBddZ edBd d!Z edBd"d#Z edDd$d%ZedEd&d'Zd(d)dFd*d+ZedDd,d-ZedEd.d/Zd(d)dFd0d1Zd2d2d3d2d4dGd:d;ZdHd=d>ZdS)I PaginationaUApply an offset and limit to the query based on the current page and number of items per page. Don't create pagination objects manually. They are created by :meth:`.SQLAlchemy.paginate` and :meth:`.Query.paginate`. This is a base class, a subclass must implement :meth:`_query_items` and :meth:`_query_count`. Those methods will use arguments passed as ``kwargs`` to perform the queries. :param page: The current page, used to calculate the offset. Defaults to the ``page`` query arg during a request, or 1 otherwise. :param per_page: The maximum number of items on a page, used to calculate the offset and limit. Defaults to the ``per_page`` query arg during a request, or 20 otherwise. :param max_per_page: The maximum allowed value for ``per_page``, to limit a user-provided value. Use ``None`` for no limit. Defaults to 100. :param error_out: Abort with a ``404 Not Found`` error if no items are returned and ``page`` is not 1, or if ``page`` or ``per_page`` is less than 1, or if either are not ints. :param count: Calculate the total number of values by issuing an extra count query. For very complex queries this may be inaccurate or slow, so it can be disabled and set manually if necessary. :param kwargs: Information about the query to paginate. Different subclasses will require different arguments. .. versionchanged:: 3.0 Iterating over a pagination object iterates over its items. .. versionchanged:: 3.0 Creating instances manually is not a public API. NdTpage int | Noneper_page max_per_page error_outboolcountkwargst.AnyreturnNonec Ksx||_|j||||d\}}||_ ||_ ||_ |}|s*|dkr*|r*td||_ |r5|}nd}||_ dS)Nrr r r ) _query_args_prepare_page_argsrr r _query_itemsritems _query_counttotal) selfrr r r rrrrr]/var/www/html/ecg_monitoring/venv/lib/python3.10/site-packages/flask_sqlalchemy/pagination.py__init__.s.   zPagination.__init__rtuple[int, int]c CstrI|dur%z ttjdd}Wnttfy$|r tdd}Ynw|durHz ttjdd}Wn ttfyG|rCtdd}Ynwn |durOd}|durUd}|dur^t||}|dkrk|ritdnd}|dkr{|rytd||fSd}||fS)Nrrrr )rintargsget TypeError ValueErrorrminrrrrrZsD   zPagination._prepare_page_argsr"cCs|jd|jS)z}The index of the first item to query, passed to ``offset()``. :meta private: .. versionadded:: 3.0 r)rr rrrr _query_offsetszPagination._query_offset list[t.Any]cCt)zExecute the query to get the items on the current page. Uses init arguments stored in :attr:`_query_args`. :meta private: .. versionadded:: 3.0 NotImplementedErrorr(rrrr zPagination._query_itemscCr+)zExecute the query to get the total number of items. Uses init arguments stored in :attr:`_query_args`. :meta private: .. versionadded:: 3.0 r,r(rrrrr.zPagination._query_countcCs&t|jdkr dS|jd|jdS)zThe number of the first item on the page, starting from 1, or 0 if there are no items. .. versionadded:: 3.0 rr)lenrrr r(rrrfirstszPagination.firstcCs|j}t||t|jdS)zThe number of the last item on the page, starting from 1, inclusive, or 0 if there are no items. .. versionadded:: 3.0 r)r0maxr/r)rr0rrrlastszPagination.lastcCs(|jdks |jdur dSt|j|jS)zThe total number of pages.rN)rrr r(rrrpagesszPagination.pagescCs |jdkS)z'``True`` if this is not the first page.r)rr(rrrhas_prevs zPagination.has_prevcCs|jsdS|jdS)z@The previous page number, or ``None`` if this is the first page.Nr)r4rr(rrrprev_num zPagination.prev_numF)r cCs2t|d|jd|j|dd|j}|j|_|S)aQuery the :class:`Pagination` object for the previous page. :param error_out: Abort with a ``404 Not Found`` error if no items are returned and ``page`` is not 1, or if ``page`` or ``per_page`` is less than 1, or if either are not ints. rF)rr r rNr)typerr rrrr prrrprevszPagination.prevcCs |j|jkS)z&``True`` if this is not the last page.)rr3r(rrrhas_nexts zPagination.has_nextcCs|jsdS|jdS)z;The next page number, or ``None`` if this is the last page.Nr)r;rr(rrrnext_numr6zPagination.next_numcCs6t|d|jd|j|j|dd|j}|j|_|S)aQuery the :class:`Pagination` object for the next page. :param error_out: Abort with a ``404 Not Found`` error if no items are returned and ``page`` is not 1, or if ``page`` or ``per_page`` is less than 1, or if either are not ints. rF)rr r r rNr)r7rr r rrr8rrrnextszPagination.next) left_edge left_current right_current right_edger@rArBrCt.Iterator[int | None]c cs|jd}|dkr dStd||}td|EdH||kr!dSt||j|}t|j|d|}||dkr|jd}||j|j}|jd}t||S)Nselectsession) rlimitr offsetr)listexecuteuniquescalars)rrXrYrrrrOs  zSelectPagination._query_itemsr"cCsR|jd}|tdd}|jd}|ttj  | }|S)NrX*rY) roptionssa_ormlazyloadorder_bysubqueryr]sarXfuncr select_fromscalar)rrXsubrYoutrrrrUs   zSelectPagination._query_countNrOrNrPrQrRrSrrrrrrrWHs rWc@rV) QueryPaginationzReturned by :meth:`.Query.paginate`. Takes a ``query`` argument in addition to the :class:`Pagination` arguments. .. versionadded:: 3.0 rr*cCs&|jd}||j|j}|SNquery)rrZr r[r)all)rrorkrrrrds zQueryPagination._query_itemsr"cCs|jdd}|Srn)rrdr)rrkrrrriszQueryPagination._query_countNrOrNrlrrrrrm]s rm) __future__rtypingtmathr sqlalchemyrfsqlalchemy.ormormrbflaskrrrrWrmrrrrs     >