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편집 파일: result.cpython-38.pyc
U -?�f�v � @ s d dl mZ d dlZd dlmZ d dlmZ d dlmZ d dlmZ d dlmZ d dlm Z d d lm Z d d lm Z d d l m Z d dl mZ d dlmZ d dlmZ d dlmZ d dlmZ d dlmZ d dlmZ d dlmZ d dlmZ d dlmZ d dl m Z d dl m Z d dl m!Z! d dl m"Z" e �rRd d lm#Z# d d lm$Z$ d d lm%Z% e d ed �Z&e d!e ed"f d �Z'G d#d$� d$ee �Z(G d%d&� d&ee(ee' �Z)G d'd(� d(e(e �Z*G d)d*� d*ee(e �Z+G d+d,� d,e(e ej,�Z-e d-d.d �Z.d-d/d-d0�d1d2�Z/dS )3� )� annotationsN)�Any)� AsyncIterator)�Optional)�overload)�Sequence)�Tuple)� TYPE_CHECKING)�TypeVar� )�exc� )�util)�Result)�_NO_ROW)�_R)� _WithKeys)� FilterResult)� FrozenResult)�ResultMetaData)�Row)� RowMapping)� _generative)�greenlet_spawn)�Literal)�Self)� CursorResult)� _KeyIndexType)�_UniqueFilterType�_T)�bound�_TP.c @ sB e Zd ZU dZded< ded< dd�dd �Zed d�d d ��Zd S )� AsyncCommon� � Result[Any]� _real_resultr � _metadata�None��returnc � s t | jj�I dH dS )zClose this result.N)r r% �close��selfr# r# �M/opt/hc_python/lib64/python3.8/site-packages/sqlalchemy/ext/asyncio/result.pyr* 2 s zAsyncCommon.close�boolc C s | j jS )z�proxies the .closed attribute of the underlying result object, if any, else raises ``AttributeError``. .. versionadded:: 2.0.0b3 )r% �closedr+ r# r# r- r/ 7 s zAsyncCommon.closedN)�__name__� __module__� __qualname__� __slots__�__annotations__r* �propertyr/ r# r# r# r- r" , s r" c @ s e Zd ZU dZdZded< dd�dd�Zedd �d d ��Zdd �d d �Z e dVddd�dd��Z ddd�dd�Z dWddd�dd �Z d d �d d �Zd d �d!d"�ZdXdd d�d#d$�Zd d �d%d&�Zd'd �d(d)�Zd*d �d+d,�Zd d �d-d.�Zd d �d/d0�Zed1d2d3�d4d5��Zed6d �d7d5��Zd6d �d8d5�Zed1d9d3�d:d;��Zed<d �d=d;��Zd<d �d>d;�Zd*d �d?d@�Zed1d9d3�dAdB��Zed6d �dCdB��Zd6d �dDdB�ZdEd �dFdG�Zed1dHdIdJ�dKdL��Z ed1dId3�dMdL��Z edYddOdP�dQdL��Z dZddOdP�dRdL�Z dSd �dTdU�Z dS )[� AsyncResultal An asyncio wrapper around a :class:`_result.Result` object. The :class:`_asyncio.AsyncResult` only applies to statement executions that use a server-side cursor. It is returned only from the :meth:`_asyncio.AsyncConnection.stream` and :meth:`_asyncio.AsyncSession.stream` methods. .. note:: As is the case with :class:`_engine.Result`, this object is used for ORM results returned by :meth:`_asyncio.AsyncSession.execute`, which can yield instances of ORM mapped objects either individually or within tuple-like rows. Note that these result objects do not deduplicate instances or rows automatically as is the case with the legacy :class:`_orm.Query` object. For in-Python de-duplication of instances or rows, use the :meth:`_asyncio.AsyncResult.unique` modifier method. .. versionadded:: 1.4 r# z Result[_TP]r% )� real_resultc C s< || _ |j| _|j| _d | _d|jkr8| �d|jd � d S )NZ _row_getter)r% r& �_unique_filter_state�_post_creational_filter�__dict__Z_set_memoized_attribute)r, r7 r# r# r- �__init__[ s �zAsyncResult.__init__zAsyncTupleResult[_TP]r( c C s | S )z�Apply a "typed tuple" typing filter to returned rows. The :attr:`_asyncio.AsyncResult.t` attribute is a synonym for calling the :meth:`_asyncio.AsyncResult.tuples` method. .. versionadded:: 2.0 r# r+ r# r# r- �ti s z AsyncResult.tc C s | S )aB Apply a "typed tuple" typing filter to returned rows. This method returns the same :class:`_asyncio.AsyncResult` object at runtime, however annotates as returning a :class:`_asyncio.AsyncTupleResult` object that will indicate to :pep:`484` typing tools that plain typed ``Tuple`` instances are returned rather than rows. This allows tuple unpacking and ``__getitem__`` access of :class:`_engine.Row` objects to by typed, for those cases where the statement invoked itself included typing information. .. versionadded:: 2.0 :return: the :class:`_result.AsyncTupleResult` type at typing time. .. seealso:: :attr:`_asyncio.AsyncResult.t` - shorter synonym :attr:`_engine.Row.t` - :class:`_engine.Row` version r# r+ r# r# r- �tuplesu s zAsyncResult.tuplesN�Optional[_UniqueFilterType]r ��strategyr) c C s t � |f| _| S )z�Apply unique filtering to the objects returned by this :class:`_asyncio.AsyncResult`. Refer to :meth:`_engine.Result.unique` in the synchronous SQLAlchemy API for a complete behavioral description. ��setr8 �r, r@ r# r# r- �unique� s zAsyncResult.uniquer ��col_expressionsr) c G s | � |�S )z�Establish the columns that should be returned in each row. Refer to :meth:`_engine.Result.columns` in the synchronous SQLAlchemy API for a complete behavioral description. �Z_column_slices�r, rF r# r# r- �columns� s zAsyncResult.columns� Optional[int]z!AsyncIterator[Sequence[Row[_TP]]]��sizer) c C s, | j }t|| |�I dH }|r(|V qq(qdS )a� Iterate through sub-lists of rows of the size given. An async iterator is returned:: async def scroll_results(connection): result = await connection.stream(select(users_table)) async for partition in result.partitions(100): print("list of rows: %s" % partition) Refer to :meth:`_engine.Result.partitions` in the synchronous SQLAlchemy API for a complete behavioral description. N��_manyrow_getterr �r, rL �getter� partitionr# r# r- � partitions� s zAsyncResult.partitionszSequence[Row[_TP]]c � s t | j�I dH S )zcA synonym for the :meth:`_asyncio.AsyncResult.all` method. .. versionadded:: 2.0 N�r Z_allrowsr+ r# r# r- �fetchall� s zAsyncResult.fetchallzOptional[Row[_TP]]c � s& t | j| �I dH }|tkr dS |S dS )a� Fetch one row. When all rows are exhausted, returns None. This method is provided for backwards compatibility with SQLAlchemy 1.x.x. To fetch the first row of a result only, use the :meth:`_asyncio.AsyncResult.first` method. To iterate through all rows, iterate the :class:`_asyncio.AsyncResult` object directly. :return: a :class:`_engine.Row` object if no filters are applied, or ``None`` if no rows remain. N�r �_onerow_getterr �r, �rowr# r# r- �fetchone� s zAsyncResult.fetchonec � s t | j| |�I dH S )a� Fetch many rows. When all rows are exhausted, returns an empty list. This method is provided for backwards compatibility with SQLAlchemy 1.x.x. To fetch rows in groups, use the :meth:`._asyncio.AsyncResult.partitions` method. :return: a list of :class:`_engine.Row` objects. .. seealso:: :meth:`_asyncio.AsyncResult.partitions` N�r rN �r, rL r# r# r- � fetchmany� s zAsyncResult.fetchmanyc � s t | j�I dH S )z�Return all rows in a list. Closes the result set after invocation. Subsequent invocations will return an empty list. :return: a list of :class:`_engine.Row` objects. NrS r+ r# r# r- �all� s zAsyncResult.allzAsyncResult[_TP]c C s | S �Nr# r+ r# r# r- � __aiter__ s zAsyncResult.__aiter__zRow[_TP]c � s* t | j| �I d H }|tkr"t� �n|S d S r^ �r rV r �StopAsyncIterationrW r# r# r- � __anext__ s zAsyncResult.__anext__c � s t | jddd�I dH S )a� Fetch the first row or ``None`` if no row is present. Closes the result set and discards remaining rows. .. note:: This method returns one **row**, e.g. tuple, by default. To return exactly one single scalar value, that is, the first column of the first row, use the :meth:`_asyncio.AsyncResult.scalar` method, or combine :meth:`_asyncio.AsyncResult.scalars` and :meth:`_asyncio.AsyncResult.first`. Additionally, in contrast to the behavior of the legacy ORM :meth:`_orm.Query.first` method, **no limit is applied** to the SQL query which was invoked to produce this :class:`_asyncio.AsyncResult`; for a DBAPI driver that buffers results in memory before yielding rows, all rows will be sent to the Python process and all but the first row will be discarded. .. seealso:: :ref:`migration_20_unify_select` :return: a :class:`_engine.Row` object, or None if no rows remain. .. seealso:: :meth:`_asyncio.AsyncResult.scalar` :meth:`_asyncio.AsyncResult.one` FN�r Z _only_one_rowr+ r# r# r- �first s "zAsyncResult.firstc � s t | jddd�I dH S )a� Return at most one result or raise an exception. Returns ``None`` if the result has no rows. Raises :class:`.MultipleResultsFound` if multiple rows are returned. .. versionadded:: 1.4 :return: The first :class:`_engine.Row` or ``None`` if no row is available. :raises: :class:`.MultipleResultsFound` .. seealso:: :meth:`_asyncio.AsyncResult.first` :meth:`_asyncio.AsyncResult.one` TFNrc r+ r# r# r- � one_or_none/ s zAsyncResult.one_or_nonezAsyncResult[Tuple[_T]]r �r, r) c � s d S r^ r# r+ r# r# r- � scalar_oneF s zAsyncResult.scalar_oner c � s d S r^ r# r+ r# r# r- rg I s c � s t | jddd�I dH S )a6 Return exactly one scalar result or raise an exception. This is equivalent to calling :meth:`_asyncio.AsyncResult.scalars` and then :meth:`_asyncio.AsyncResult.one`. .. seealso:: :meth:`_asyncio.AsyncResult.one` :meth:`_asyncio.AsyncResult.scalars` TNrc r+ r# r# r- rg L s � Optional[_T]c � s d S r^ r# r+ r# r# r- �scalar_one_or_none[ s z AsyncResult.scalar_one_or_none� Optional[Any]c � s d S r^ r# r+ r# r# r- ri ` s c � s t | jddd�I dH S )a< Return exactly one scalar result or ``None``. This is equivalent to calling :meth:`_asyncio.AsyncResult.scalars` and then :meth:`_asyncio.AsyncResult.one_or_none`. .. seealso:: :meth:`_asyncio.AsyncResult.one_or_none` :meth:`_asyncio.AsyncResult.scalars` TFNrc r+ r# r# r- ri c s c � s t | jddd�I dH S )a� Return exactly one row or raise an exception. Raises :class:`.NoResultFound` if the result returns no rows, or :class:`.MultipleResultsFound` if multiple rows would be returned. .. note:: This method returns one **row**, e.g. tuple, by default. To return exactly one single scalar value, that is, the first column of the first row, use the :meth:`_asyncio.AsyncResult.scalar_one` method, or combine :meth:`_asyncio.AsyncResult.scalars` and :meth:`_asyncio.AsyncResult.one`. .. versionadded:: 1.4 :return: The first :class:`_engine.Row`. :raises: :class:`.MultipleResultsFound`, :class:`.NoResultFound` .. seealso:: :meth:`_asyncio.AsyncResult.first` :meth:`_asyncio.AsyncResult.one_or_none` :meth:`_asyncio.AsyncResult.scalar_one` TFNrc r+ r# r# r- �oner s zAsyncResult.onec � s d S r^ r# r+ r# r# r- �scalar� s zAsyncResult.scalarc � s d S r^ r# r+ r# r# r- rl � s c � s t | jddd�I dH S )a� Fetch the first column of the first row, and close the result set. Returns ``None`` if there are no rows to fetch. No validation is performed to test if additional rows remain. After calling this method, the object is fully closed, e.g. the :meth:`_engine.CursorResult.close` method will have been called. :return: a Python scalar value, or ``None`` if no rows remain. FTNrc r+ r# r# r- rl � s zFrozenResult[_TP]c � s t t| �I dH S )a Return a callable object that will produce copies of this :class:`_asyncio.AsyncResult` when invoked. The callable object returned is an instance of :class:`_engine.FrozenResult`. This is used for result set caching. The method must be called on the result when it has been unconsumed, and calling the method will consume the result fully. When the :class:`_engine.FrozenResult` is retrieved from a cache, it can be called any number of times where it will produce a new :class:`_engine.Result` object each time against its stored set of rows. .. seealso:: :ref:`do_orm_execute_re_executing` - example usage within the ORM to implement a result-set cache. N)r r r+ r# r# r- �freeze� s zAsyncResult.freezez Literal[0]zAsyncScalarResult[_T])r, �indexr) c C s d S r^ r# �r, rn r# r# r- �scalars� s zAsyncResult.scalarsc C s d S r^ r# r+ r# r# r- rp � s r zAsyncScalarResult[Any])rn r) c C s d S r^ r# ro r# r# r- rp � s c C s t | j|�S )a> Return an :class:`_asyncio.AsyncScalarResult` filtering object which will return single elements rather than :class:`_row.Row` objects. Refer to :meth:`_result.Result.scalars` in the synchronous SQLAlchemy API for a complete behavioral description. :param index: integer or row key indicating the column to be fetched from each row, defaults to ``0`` indicating the first column. :return: a new :class:`_asyncio.AsyncScalarResult` filtering object referring to this :class:`_asyncio.AsyncResult` object. )�AsyncScalarResultr% ro r# r# r- rp � s �AsyncMappingResultc C s t | j�S )a� Apply a mappings filter to returned rows, returning an instance of :class:`_asyncio.AsyncMappingResult`. When this filter is applied, fetching rows will return :class:`_engine.RowMapping` objects instead of :class:`_engine.Row` objects. :return: a new :class:`_asyncio.AsyncMappingResult` filtering object referring to the underlying :class:`_result.Result` object. )rr r% r+ r# r# r- �mappings� s zAsyncResult.mappings)N)N)N)r )r ) r0 r1 r2 �__doc__r3 r4 r; r5 r< r= r rD rI rR rT rY r\ r] r_ rb rd re r rg ri rk rl rm rp rs r# r# r# r- r6 B s\ � � $ r6 c @ s� e Zd ZdZdZdZddd�dd�Zd)d d d �d d�Zd*ddd�dd�Zdd�dd�Z d+ddd�dd�Z dd�dd�Z d d�d d �Z d d�d d!�Z d"d�d#d$�Zd"d�d%d&�Zd d�d'd(�Zd S ),rq a� A wrapper for a :class:`_asyncio.AsyncResult` that returns scalar values rather than :class:`_row.Row` values. The :class:`_asyncio.AsyncScalarResult` object is acquired by calling the :meth:`_asyncio.AsyncResult.scalars` method. Refer to the :class:`_result.ScalarResult` object in the synchronous SQLAlchemy API for a complete behavioral description. .. versionadded:: 1.4 r# Fr$ r )r7 rn c C sD || _ |jr |j| _d | _n |j�|g�| _t�d�| _|j| _d S �Nr )r% �_source_supports_scalarsr& r9 �_reduce�operator� itemgetterr8 )r, r7 rn r# r# r- r; � s zAsyncScalarResult.__init__Nr> r r? c C s t � |f| _| S )z�Apply unique filtering to the objects returned by this :class:`_asyncio.AsyncScalarResult`. See :meth:`_asyncio.AsyncResult.unique` for usage details. rA rC r# r# r- rD s zAsyncScalarResult.uniquerJ �AsyncIterator[Sequence[_R]]rK c C s, | j }t|| |�I dH }|r(|V qq(qdS )z�Iterate through sub-lists of elements of the size given. Equivalent to :meth:`_asyncio.AsyncResult.partitions` except that scalar values, rather than :class:`_engine.Row` objects, are returned. NrM rO r# r# r- rR s z AsyncScalarResult.partitions� Sequence[_R]r( c � s t | j�I dH S )z@A synonym for the :meth:`_asyncio.AsyncScalarResult.all` method.NrS r+ r# r# r- rT ( s zAsyncScalarResult.fetchallc � s t | j| |�I dH S )z�Fetch many objects. Equivalent to :meth:`_asyncio.AsyncResult.fetchmany` except that scalar values, rather than :class:`_engine.Row` objects, are returned. NrZ r[ r# r# r- r\ - s zAsyncScalarResult.fetchmanyc � s t | j�I dH S )z�Return all scalar values in a list. Equivalent to :meth:`_asyncio.AsyncResult.all` except that scalar values, rather than :class:`_engine.Row` objects, are returned. NrS r+ r# r# r- r] 7 s zAsyncScalarResult.allzAsyncScalarResult[_R]c C s | S r^ r# r+ r# r# r- r_ A s zAsyncScalarResult.__aiter__r c � s* t | j| �I d H }|tkr"t� �n|S d S r^ r` rW r# r# r- rb D s zAsyncScalarResult.__anext__� Optional[_R]c � s t | jddd�I dH S )z�Fetch the first object or ``None`` if no object is present. Equivalent to :meth:`_asyncio.AsyncResult.first` except that scalar values, rather than :class:`_engine.Row` objects, are returned. FNrc r+ r# r# r- rd K s zAsyncScalarResult.firstc � s t | jddd�I dH S )z�Return at most one object or raise an exception. Equivalent to :meth:`_asyncio.AsyncResult.one_or_none` except that scalar values, rather than :class:`_engine.Row` objects, are returned. TFNrc r+ r# r# r- re U s z AsyncScalarResult.one_or_nonec � s t | jddd�I dH S )z�Return exactly one object or raise an exception. Equivalent to :meth:`_asyncio.AsyncResult.one` except that scalar values, rather than :class:`_engine.Row` objects, are returned. TFNrc r+ r# r# r- rk _ s zAsyncScalarResult.one)N)N)N)r0 r1 r2 rt r3 �_generate_rowsr; rD rR rT r\ r] r_ rb rd re rk r# r# r# r- rq � s � � rq c @ s� e Zd ZdZdZdZe�d�Zdd�dd�Z d.d d d �d d�Z dd d�dd�Z d/ddd�dd�Z dd�dd�Z d d�d d �Zd0ddd�d d �Zdd�d!d"�Zd d�d#d$�Zd%d�d&d'�Zd d�d(d)�Zd d�d*d+�Zd%d�d,d-�Zd S )1rr a� A wrapper for a :class:`_asyncio.AsyncResult` that returns dictionary values rather than :class:`_engine.Row` values. The :class:`_asyncio.AsyncMappingResult` object is acquired by calling the :meth:`_asyncio.AsyncResult.mappings` method. Refer to the :class:`_result.MappingResult` object in the synchronous SQLAlchemy API for a complete behavioral description. .. versionadded:: 1.4 r# T�_mappingr$ )�resultc C s0 || _ |j| _|j| _|jr,| j�dg�| _d S ru )r% r8 r& rv rw )r, r r# r# r- r; ~ s zAsyncMappingResult.__init__Nr> r r? c C s t � |f| _| S )z�Apply unique filtering to the objects returned by this :class:`_asyncio.AsyncMappingResult`. See :meth:`_asyncio.AsyncResult.unique` for usage details. rA rC r# r# r- rD � s zAsyncMappingResult.uniquer rE c G s | � |�S )z:Establish the columns that should be returned in each row.rG rH r# r# r- rI � s zAsyncMappingResult.columnsrJ z#AsyncIterator[Sequence[RowMapping]]rK c C s, | j }t|| |�I dH }|r(|V qq(qdS )z�Iterate through sub-lists of elements of the size given. Equivalent to :meth:`_asyncio.AsyncResult.partitions` except that :class:`_engine.RowMapping` values, rather than :class:`_engine.Row` objects, are returned. NrM rO r# r# r- rR � s z AsyncMappingResult.partitionszSequence[RowMapping]r( c � s t | j�I dH S )zAA synonym for the :meth:`_asyncio.AsyncMappingResult.all` method.NrS r+ r# r# r- rT � s zAsyncMappingResult.fetchallzOptional[RowMapping]c � s& t | j| �I dH }|tkr dS |S dS )z�Fetch one object. Equivalent to :meth:`_asyncio.AsyncResult.fetchone` except that :class:`_engine.RowMapping` values, rather than :class:`_engine.Row` objects, are returned. NrU rW r# r# r- rY � s zAsyncMappingResult.fetchonec � s t | j| |�I dH S )z�Fetch many rows. Equivalent to :meth:`_asyncio.AsyncResult.fetchmany` except that :class:`_engine.RowMapping` values, rather than :class:`_engine.Row` objects, are returned. NrZ r[ r# r# r- r\ � s z AsyncMappingResult.fetchmanyc � s t | j�I dH S )z�Return all rows in a list. Equivalent to :meth:`_asyncio.AsyncResult.all` except that :class:`_engine.RowMapping` values, rather than :class:`_engine.Row` objects, are returned. NrS r+ r# r# r- r] � s zAsyncMappingResult.allc C s | S r^ r# r+ r# r# r- r_ � s z AsyncMappingResult.__aiter__r c � s* t | j| �I d H }|tkr"t� �n|S d S r^ r` rW r# r# r- rb � s z AsyncMappingResult.__anext__c � s t | jddd�I dH S )z�Fetch the first object or ``None`` if no object is present. Equivalent to :meth:`_asyncio.AsyncResult.first` except that :class:`_engine.RowMapping` values, rather than :class:`_engine.Row` objects, are returned. FNrc r+ r# r# r- rd � s zAsyncMappingResult.firstc � s t | jddd�I dH S )z�Return at most one object or raise an exception. Equivalent to :meth:`_asyncio.AsyncResult.one_or_none` except that :class:`_engine.RowMapping` values, rather than :class:`_engine.Row` objects, are returned. TFNrc r+ r# r# r- re � s z AsyncMappingResult.one_or_nonec � s t | jddd�I dH S )z�Return exactly one object or raise an exception. Equivalent to :meth:`_asyncio.AsyncResult.one` except that :class:`_engine.RowMapping` values, rather than :class:`_engine.Row` objects, are returned. TFNrc r+ r# r# r- rk � s zAsyncMappingResult.one)N)N)N)r0 r1 r2 rt r3 r} rx � attrgetterr9 r; rD rI rR rT rY r\ r] r_ rb rd re rk r# r# r# r- rr j s( � � � rr c @ sJ e Zd ZdZdZe�rFd2ddd�dd�Zd d �d d �Zd d �dd�Zd3dd d�dd�Z d d �dd�Z dd �dd�Z dd �dd�Z d d �dd�Z d d �d d �Zdd �d d �Zed d!d"�d#d$��Zed%d �d&d$��Zd%d �d'd$�Zed d(d"�d)d*��Zed+d �d,d*��Zd+d �d-d*�Zed d(d"�d.d/��Zed%d �d0d/��Zd%d �d1d/�ZdS )4�AsyncTupleResulta A :class:`_asyncio.AsyncResult` that's typed as returning plain Python tuples instead of rows. Since :class:`_engine.Row` acts like a tuple in every way already, this class is a typing only class, regular :class:`_asyncio.AsyncResult` is still used at runtime. r# NrJ rz rK c � s dS )z�Iterate through sub-lists of elements of the size given. Equivalent to :meth:`_result.Result.partitions` except that tuple values, rather than :class:`_engine.Row` objects, are returned. Nr# r[ r# r# r- rR s zAsyncTupleResult.partitionsr| r( c � s dS )z�Fetch one tuple. Equivalent to :meth:`_result.Result.fetchone` except that tuple values, rather than :class:`_engine.Row` objects, are returned. Nr# r+ r# r# r- rY s zAsyncTupleResult.fetchoner{ c � s dS )z:A synonym for the :meth:`_engine.ScalarResult.all` method.Nr# r+ r# r# r- rT # s zAsyncTupleResult.fetchallc � s dS )z�Fetch many objects. Equivalent to :meth:`_result.Result.fetchmany` except that tuple values, rather than :class:`_engine.Row` objects, are returned. Nr# r[ r# r# r- r\ ' s zAsyncTupleResult.fetchmanyc � s dS )z�Return all scalar values in a list. Equivalent to :meth:`_result.Result.all` except that tuple values, rather than :class:`_engine.Row` objects, are returned. Nr# r+ r# r# r- r] 1 s zAsyncTupleResult.allzAsyncIterator[_R]c � s d S r^ r# r+ r# r# r- r_ ; � zAsyncTupleResult.__aiter__r c � s d S r^ r# r+ r# r# r- rb = r� zAsyncTupleResult.__anext__c � s dS )z�Fetch the first object or ``None`` if no object is present. Equivalent to :meth:`_result.Result.first` except that tuple values, rather than :class:`_engine.Row` objects, are returned. Nr# r+ r# r# r- rd ? s zAsyncTupleResult.firstc � s dS )z�Return at most one object or raise an exception. Equivalent to :meth:`_result.Result.one_or_none` except that tuple values, rather than :class:`_engine.Row` objects, are returned. Nr# r+ r# r# r- re J s z AsyncTupleResult.one_or_nonec � s dS )z�Return exactly one object or raise an exception. Equivalent to :meth:`_result.Result.one` except that tuple values, rather than :class:`_engine.Row` objects, are returned. Nr# r+ r# r# r- rk T s zAsyncTupleResult.onezAsyncTupleResult[Tuple[_T]]r rf c � s d S r^ r# r+ r# r# r- rg ^ s zAsyncTupleResult.scalar_oner c � s d S r^ r# r+ r# r# r- rg a s c � s dS )a6 Return exactly one scalar result or raise an exception. This is equivalent to calling :meth:`_engine.Result.scalars` and then :meth:`_engine.Result.one`. .. seealso:: :meth:`_engine.Result.one` :meth:`_engine.Result.scalars` Nr# r+ r# r# r- rg d s rh c � s d S r^ r# r+ r# r# r- ri s s z#AsyncTupleResult.scalar_one_or_nonerj c � s d S r^ r# r+ r# r# r- ri x s c � s dS )a6 Return exactly one or no scalar result. This is equivalent to calling :meth:`_engine.Result.scalars` and then :meth:`_engine.Result.one_or_none`. .. seealso:: :meth:`_engine.Result.one_or_none` :meth:`_engine.Result.scalars` Nr# r+ r# r# r- ri { s c � s d S r^ r# r+ r# r# r- rl � s zAsyncTupleResult.scalarc � s d S r^ r# r+ r# r# r- rl � s c � s dS )a� Fetch the first column of the first row, and close the result set. Returns ``None`` if there are no rows to fetch. No validation is performed to test if additional rows remain. After calling this method, the object is fully closed, e.g. the :meth:`_engine.CursorResult.close` method will have been called. :return: a Python scalar value , or ``None`` if no rows remain. Nr# r+ r# r# r- rl � s )N)N)r0 r1 r2 rt r3 r rR rY rT r\ r] r_ rb rd re rk r rg ri rl r# r# r# r- r� � s: � r� �_RTr$ r )r �calling_methodr) c � s| z | j }W n tk r" | Y S X |s6t| dd �}n| }|rx|jjrxt|j�I d H t�d|j j j |j |j j j f ��| S )N�rawzuCan't use the %s.%s() method with a server-side cursor. Use the %s.stream() method for an async streaming result set.) Z _is_cursor�AttributeError�getattr�contextZ_is_server_sider r* � async_excZAsyncMethodRequired�__self__� __class__r0 )r r� Z is_cursorZ cursor_resultr# r# r- �_ensure_sync_result� s$ ��� r� )0� __future__r rx �typingr r r r r r r r � r r� r Zenginer Z engine.resultr r r r r r Z engine.rowr r Zsql.baser Zutil.concurrencyr Z util.typingr r r r r r r! r" r6 rq rr Z TypingOnlyr� r� r� r# r# r# r- �<module> sV * &