Файловый менеджер - Редактировать - /opt/imh-python/lib/python3.9/site-packages/sqlalchemy/orm/__pycache__/descriptor_props.cpython-39.pyc
Ðазад
a _�hTr � @ s4 d Z ddlmZ ddlmZ ddlmZ ddlmZ ddlmZ ddlm Z dd lm Z dd lm Z dd lm Z dd lmZ dd lmZ ddlmZ G dd� de�Zejjddd�G dd� de��Zejjddd�G dd� de��Zejjddd�G dd� de��Zejjddd�e�dd�G d d � d e���Zd S ) z�Descriptor properties are more "auxiliary" properties that exist as configurational elements, but don't participate as actively in the load/persist ORM loop. � )� attributes)� properties)�query)�MapperProperty)�PropComparator)� _none_set� )�event)�exc)�schema)�sql)�util)� expressionc @ s e Zd ZdZdZdZdd� ZdS )�DescriptorPropertyzO:class:`.MapperProperty` which proxies access to a user-defined descriptor.NFc s� ��G �fdd�dt �}�jd u rBt� j�jd �}� �|�rB|�_�jd u r��fdd�}�fdd�}�fdd�}t|||d ��_t��j��j j�j�j� �fd d ��j �d �}|�j�|_ � j � �j|� d S ) Nc sL e Zd ZdZdZdZe� fdd��Zdd� Ze � d�rHe j f� fdd � Z d S ) z7DescriptorProperty.instrument_class.<locals>._ProxyImplFTc s � j S �N)� uses_objects��self��prop� ��/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/sqlalchemy/orm/descriptor_props.pyr , s zDDescriptorProperty.instrument_class.<locals>._ProxyImpl.uses_objectsc S s || _ d S r ��key)r r r r r �__init__0 s z@DescriptorProperty.instrument_class.<locals>._ProxyImpl.__init__� get_historyc s � � |||�S r )r )r �state�dict_�passiver r r r 5 s zCDescriptorProperty.instrument_class.<locals>._ProxyImpl.get_historyN) �__name__� __module__� __qualname__Zaccepts_scalar_loaderZexpire_missingZ collection�propertyr r �hasattrr � PASSIVE_OFFr r r r r � _ProxyImpl' s �r% c s t | � j|� d S r )�setattr�name)�obj�valuer r r �fsetA s z1DescriptorProperty.instrument_class.<locals>.fsetc s t | � j� d S r )�delattrr' �r( r r r �fdelD s z1DescriptorProperty.instrument_class.<locals>.fdelc s t | � j�S r )�getattrr' r, r r r �fgetG s z1DescriptorProperty.instrument_class.<locals>.fget)r/ r* r- c s �� � �S r )�_comparator_factoryr )�mapperr r r �<lambda>P � z5DescriptorProperty.instrument_class.<locals>.<lambda>)�docZoriginal_property)�object� descriptorr. �class_r Z_is_userland_descriptorr" r Zcreate_proxied_attribute�parentr4 �implZ class_managerZinstrument_attribute)r r1 r% �descr* r- r/ Z proxy_attrr )r1 r r r �instrument_class$ s* � z#DescriptorProperty.instrument_class)r r r! �__doc__r4 r r; r r r r r s r zsqlalchemy.orm.propertiesT)Z add_to_allc s� e Zd ZdZejdd�� fdd��Z� fdd�Zdd � Ze � Z d d � Z ej d d � �Z ej dd� �Zedd� �Zdd� Zdd� Zej dd� �Zejfdd�Zdd� ZG d d � d ej�ZG d d � d e�Z d d!� Z � Z S )"�CompositePropertyz�Defines a "composite" mapped attribute, representing a collection of columns as one attribute. :class:`.CompositeProperty` is constructed using the :func:`.composite` function. .. seealso:: :ref:`mapper_composite` )�0.7z�:class:`.AttributeExtension` is deprecated in favor of the :class:`.AttributeEvents` listener interface. The :paramref:`.composite.extension` parameter will be removed in a future release.)� extensionc s� t t| ��� || _|| _|�dd�| _|�dd�| _|�dd�| _|� d| j j �| _ d|v rj|� d�| _ t�| � | �� dS )aQ Return a composite column-based property for use with a Mapper. See the mapping documentation section :ref:`mapper_composite` for a full usage example. The :class:`.MapperProperty` returned by :func:`.composite` is the :class:`.CompositeProperty`. :param class\_: The "composite type" class, or any classmethod or callable which will produce a new instance of the composite object given the column values in order. :param \*cols: List of Column objects to be mapped. :param active_history=False: When ``True``, indicates that the "previous" value for a scalar attribute should be loaded when replaced, if not already loaded. See the same flag on :func:`.column_property`. :param group: A group name for this property when marked as deferred. :param deferred: When True, the column property is "deferred", meaning that it does not load immediately, and is instead loaded when the attribute is first accessed on an instance. See also :func:`~sqlalchemy.orm.deferred`. :param comparator_factory: a class which extends :class:`.CompositeProperty.Comparator` which provides custom SQL clause generation for comparison operations. :param doc: optional string that will be applied as the doc on the class-bound descriptor. :param info: Optional data dictionary which will be populated into the :attr:`.MapperProperty.info` attribute of this object. :param extension: an :class:`.AttributeExtension` instance, or list of extensions, which will be prepended to the list of attribute listeners for the resulting descriptor placed on the class. �active_historyF�deferred�groupN�comparator_factory�info)�superr= r �attrs�composite_class�getr@ rA rB �pop� __class__� ComparatorrC rD r �set_creation_order�_create_descriptor)r r7 rF �kwargs�rJ r r r f s :� zCompositeProperty.__init__c s t t| ��|� | �� d S r )rE r= r; �_setup_event_handlers�r r1 rO r r r; � s z"CompositeProperty.instrument_classc C s | � � dS )zInitialization which occurs after the :class:`.CompositeProperty` has been associated with its parent mapper. N)�_setup_arguments_on_columnsr r r r �do_init� s zCompositeProperty.do_initc s6 � fdd�}� fdd�}� fdd�}t |||�� _dS )ztCreate the Python descriptor that will serve as the access point on instances of the mapped class. c s� t �� �}t �� �}�j|vrx� fdd��jD �}�j|vrx|jd usPt�|�sx�j|� |�j< |jj � |�j �jg� |� �jd �S )Nc s g | ]}t � |��qS r )r. ��.0r ��instancer r � <listcomp>� s zFCompositeProperty._create_descriptor.<locals>.fget.<locals>.<listcomp>) r � instance_dict�instance_stater �_attribute_keysr � issupersetrG �manager�dispatch�refresh�_COMPOSITE_FGETrH )rW r r �valuesr rV r r/ � s � �� �z2CompositeProperty._create_descriptor.<locals>.fgetc s� t �| �}t �| �}|j� j }|�� jt j�}|jjD ]}|||||j �}q8||� j< |d u rz� j D ]}t | |d � qfn&t � j |� � �D ]\}}t | ||� q�d S r )r rY rZ r] r rH �NO_VALUEr^ �setr9 r[ r& �zip�__composite_values__)rW r) r r �attr�previous�fnr r r r r* � s � z2CompositeProperty._create_descriptor.<locals>.fsetc s^ t �| �}t �| �}|�� jt j�}|j� j }|j�|||j � � j D ]}t | |d � qHd S r ) r rZ rY rI r rb r] r^ �remover9 r[ r& )rW r r rg rf r r r r r- � s z2CompositeProperty._create_descriptor.<locals>.fdelN)r" r6 )r r/ r* r- r r r rM � s z$CompositeProperty._create_descriptorc s � fdd�� j D �S )Nc s g | ]}t � jj|j��qS r )r. r8 r7 r �rU r r r r rX � r3 z:CompositeProperty._comparable_elements.<locals>.<listcomp>��propsr r r r �_comparable_elements� s z&CompositeProperty._comparable_elementsc C sx g }| j D ]h}t|t�r*| jj|dd�}n>t|tj�rD| jj| }n$t|tj �rX|j }nt � d|f ��|� |� q |S )NF)Z_configure_mappersz[Composite expects Column objects or mapped attributes/attribute names as arguments, got: %r)rF � isinstance�strr8 Z get_propertyr �Column�_columntopropertyr ZInstrumentedAttributer" �sa_exc� ArgumentError�append)r rl rf r r r r rl � s �� zCompositeProperty.propsc C s dd� | j D �S )Nc S s g | ]}t |tj�r|�qS r )rn r rp )rU �ar r r rX r3 z-CompositeProperty.columns.<locals>.<listcomp>)rF r r r r �columns s zCompositeProperty.columnsc C s4 | j D ](}| j|_| jr&| j|_d|_| j|_qdS )zwPropagate configuration arguments made on this composite to the target columns, for those that apply. ))rA T)Z instrumentTN)rl r@ rA Z strategy_keyrB )r r r r r rR s z-CompositeProperty._setup_arguments_on_columnsc s� � fdd�}� �fdd�}�fdd�� �fdd�}�fd d �}t j�jd |d d � t j�jd|d d � t j�jd|d d d� t j�jd|d d d� t j�jd|d d d� dS )z>Establish events that populate/expire the composite attribute.c s � | |d dd� d S )NF�� is_refreshr )r �context)�_load_refresh_handlerr r � load_handler$ s z=CompositeProperty._setup_event_handlers.<locals>.load_handlerc s. |r�j h��j��|�r*� | ||dd� d S )NTrw )r �unionr[ � intersection)r ry �to_load�rz r r r �refresh_handler' s ��z@CompositeProperty._setup_event_handlers.<locals>.refresh_handlerc s` � j }|r|�ju r"�j|v r"d S �jD ]}||vr( d S q(�j� fdd��jD �� |�j< d S )Nc s g | ]}� j | �qS r )�dictrT �r r r rX H r3 zZCompositeProperty._setup_event_handlers.<locals>._load_refresh_handler.<locals>.<listcomp>)r� r` r r[ rG )r ry r~ rx r �kr r� r rz / s ��� �zFCompositeProperty._setup_event_handlers.<locals>._load_refresh_handlerc s, |d u st � j��|�r(| j�� jd � d S r )rc r[ r} r� rI r )r �keysr r r �expire_handlerK s z?CompositeProperty._setup_event_handlers.<locals>.expire_handlerc s |j �� jd� dS )z�After an insert or update, some columns may be expired due to server side defaults, or re-populated due to client side defaults. Pop out the composite value here so that it recreates. N)r� rI r )r1 � connectionr r r r �insert_update_handlerO s zFCompositeProperty._setup_event_handlers.<locals>.insert_update_handlerZ after_insertT)�rawZ after_update�load)r� � propagater_ ZexpireN)r �listenr8 )r r{ r� r� r� r r r rP ! s( � � � � �z'CompositeProperty._setup_event_handlersc C s dd� | j D �S )Nc S s g | ] }|j �qS r r rj r r r rX m r3 z5CompositeProperty._attribute_keys.<locals>.<listcomp>rk r r r r r[ k s z!CompositeProperty._attribute_keysc C s� g }g }d}| j D ]j}|j}|j| j�||�} | �� r<d}| �� } | rT|�| � n |�d� | j rr|�| j � q|�d� q|r�t � | j |� gd| j |� g�S t � d| j |� gd�S dS )z>Provided for userland code that uses attributes.get_history().FTNr ) rl r r] r9 r Z has_changes� non_deleted�extendrt �deletedr ZHistoryrG ) r r r r �addedr� Z has_historyr r �histr� r r r r o s, �z CompositeProperty.get_historyc C s | � | |�S r �rC rQ r r r r0 � s z%CompositeProperty._comparator_factoryc s$ e Zd Z� fdd�Zdd� Z� ZS )z!CompositeProperty.CompositeBundlec s& || _ ttj| �j|jg|�R � d S r )r" rE r= �CompositeBundler r )r Z property_�exprrO r r r � s ��z*CompositeProperty.CompositeBundle.__init__c s � �fdd�}|S )Nc s �j j� fdd��D �� S )Nc s g | ] }|� ��qS r r )rU �proc��rowr r rX � r3 zXCompositeProperty.CompositeBundle.create_row_processor.<locals>.proc.<locals>.<listcomp>)r" rG r� ��procsr r� r r� � s �zDCompositeProperty.CompositeBundle.create_row_processor.<locals>.procr )r r r� �labelsr� r r� r �create_row_processor� s z6CompositeProperty.CompositeBundle.create_row_processor)r r r! r r� � __classcell__r r rO r r� � s r� c @ sV e Zd ZdZdZedd� �Zdd� Zdd� Zd d � Z e j d d � �Z d d� Z dd� ZdS )z CompositeProperty.Comparatora� Produce boolean, comparison, and other operators for :class:`.CompositeProperty` attributes. See the example in :ref:`composite_operations` for an overview of usage , as well as the documentation for :class:`.PropComparator`. .. seealso:: :class:`.PropComparator` :class:`.ColumnOperators` :ref:`types_operators` :attr:`.TypeEngine.comparator_factory` Nc C s | � � S r )�__clause_element__r r r r �clauses� s z$CompositeProperty.Comparator.clausesc C s t j| jddi�S )NrB F)r Z ClauseListrm r r r r r� � s ��z/CompositeProperty.Comparator.__clause_element__c C s t �| j| �� �S r )r= r� r r� r r r r �_query_clause_element� s �z2CompositeProperty.Comparator._query_clause_elementc C sT |d u r dd� | j jD �}n,t|| j j�r4|�� }nt�d| j |f ��t| j|�S )Nc S s g | ]}d �qS r r rT r r r rX � r3 zDCompositeProperty.Comparator._bulk_update_tuples.<locals>.<listcomp>z)Can't UPDATE composite attribute %s to %r) r r[ rn rG re rr rs rd rm )r r) ra r r r �_bulk_update_tuples� s ��z0CompositeProperty.Comparator._bulk_update_tuplesc s( � j r � fdd�� jjD �S � jjS d S )Nc s g | ]}t � jj|j��qS r )r. �_adapt_to_entity�entityr rj r r r rX � s �zECompositeProperty.Comparator._comparable_elements.<locals>.<listcomp>)r� r rm r r r r rm � s �z1CompositeProperty.Comparator._comparable_elementsc s^ |d u r d gt � jj� }n|�� }dd� t� jj|�D �}� jrT� fdd�|D �}tj|� S )Nc S s g | ]\}}||k�qS r r )rU ru �br r r rX � s z7CompositeProperty.Comparator.__eq__.<locals>.<listcomp>c s g | ]}� � |��qS r )�adapter)rU �xr r r rX � r3 )�lenr rm re rd r� r �and_)r �otherra Z comparisonsr r r �__eq__� s �z#CompositeProperty.Comparator.__eq__c C s t �| �|��S r )r �not_r� )r r� r r r �__ne__� s z#CompositeProperty.Comparator.__ne__)r r r! r< �__hash__r" r� r� r� r� r �memoized_propertyrm r� r� r r r r rK � s rK c C s t | jjj�d | j S )N�.)ro r8 r7 r r r r r r �__str__� s zCompositeProperty.__str__) r r r! r< r Zdeprecated_paramsr r; rS r5 r` rM r� rm rl r" rv rR rP r[ r r$ r r0 r ZBundler� r rK r� r� r r rO r r= X s0 � A = J Ir= c s( e Zd ZdZdd� Z� fdd�Z� ZS )�ConcreteInheritedPropertya4 A 'do nothing' :class:`.MapperProperty` that disables an attribute on a concrete subclass that is only present on the inherited mapper, not the concrete classes' mapper. Cases where this occurs include: * When the superclass mapper is mapped against a "polymorphic union", which includes all attributes from all subclasses. * When a relationship() is configured on an inherited mapper, but not on the subclass mapper. Concrete mappers require that relationship() is configured explicitly on each subclass. c C s8 d }| j �� D ]$}|j| j }t|t�s|j} q4q|S r )r8 Ziterate_to_rootZ_propsr rn r� rC )r r1 Zcomparator_callable�m�pr r r r0 s z-ConcreteInheritedProperty._comparator_factoryc s< t t� ��� � fdd��G � �fdd�dt�}|� � _d S )Nc s t d� j� j� jf ��d S )NzgConcrete %s does not implement attribute %r at the instance level. Add this property explicitly to %s.)�AttributeErrorr8 r r r r r �warn s ��z0ConcreteInheritedProperty.__init__.<locals>.warnc s2 e Zd Z�fdd�Z�fdd�Z� �fdd�ZdS )zDConcreteInheritedProperty.__init__.<locals>.NoninheritedConcretePropc s � � d S r r )�sr( r) �r� r r �__set__ s zLConcreteInheritedProperty.__init__.<locals>.NoninheritedConcreteProp.__set__c s � � d S r r )r� r( r� r r � __delete__ s zOConcreteInheritedProperty.__init__.<locals>.NoninheritedConcreteProp.__delete__c s |d u r� j S �� d S r )r6 )r� r( �owner�r r� r r �__get__ s zLConcreteInheritedProperty.__init__.<locals>.NoninheritedConcreteProp.__get__N)r r r! r� r� r� r r� r r �NoninheritedConcreteProp s r� )rE r� r r5 r6 )r r� rO r� r r s z"ConcreteInheritedProperty.__init__)r r r! r< r0 r r� r r rO r r� � s r� c sP e Zd Zd� fdd� Zedd� �Zejdd� �Zdd � Z d d � Z d d � Z � Z S )�SynonymPropertyNc sR t t| ��� || _|| _|| _|| _|p6|r4|jp6d| _|rD|| _ t � | � dS )a� Denote an attribute name as a synonym to a mapped property, in that the attribute will mirror the value and expression behavior of another attribute. e.g.:: class MyClass(Base): __tablename__ = 'my_table' id = Column(Integer, primary_key=True) job_status = Column(String(50)) status = synonym("job_status") :param name: the name of the existing mapped property. This can refer to the string name ORM-mapped attribute configured on the class, including column-bound attributes and relationships. :param descriptor: a Python :term:`descriptor` that will be used as a getter (and potentially a setter) when this attribute is accessed at the instance level. :param map_column: **For classical mappings and mappings against an existing Table object only**. if ``True``, the :func:`.synonym` construct will locate the :class:`_schema.Column` object upon the mapped table that would normally be associated with the attribute name of this synonym, and produce a new :class:`.ColumnProperty` that instead maps this :class:`_schema.Column` to the alternate name given as the "name" argument of the synonym; in this way, the usual step of redefining the mapping of the :class:`_schema.Column` to be under a different name is unnecessary. This is usually intended to be used when a :class:`_schema.Column` is to be replaced with an attribute that also uses a descriptor, that is, in conjunction with the :paramref:`.synonym.descriptor` parameter:: my_table = Table( "my_table", metadata, Column('id', Integer, primary_key=True), Column('job_status', String(50)) ) class MyClass(object): @property def _job_status_descriptor(self): return "Status: %s" % self._job_status mapper( MyClass, my_table, properties={ "job_status": synonym( "_job_status", map_column=True, descriptor=MyClass._job_status_descriptor) } ) Above, the attribute named ``_job_status`` is automatically mapped to the ``job_status`` column:: >>> j1 = MyClass() >>> j1._job_status = "employed" >>> j1.job_status Status: employed When using Declarative, in order to provide a descriptor in conjunction with a synonym, use the :func:`sqlalchemy.ext.declarative.synonym_for` helper. However, note that the :ref:`hybrid properties <mapper_hybrids>` feature should usually be preferred, particularly when redefining attribute behavior. :param info: Optional data dictionary which will be populated into the :attr:`.InspectionAttr.info` attribute of this object. .. versionadded:: 1.0.0 :param comparator_factory: A subclass of :class:`.PropComparator` that will provide custom comparison behavior at the SQL expression level. .. note:: For the use case of providing an attribute which redefines both Python-level and SQL-expression level behavior of an attribute, please refer to the Hybrid attribute introduced at :ref:`mapper_hybrids` for a more effective technique. .. seealso:: :ref:`synonyms` - Overview of synonyms :func:`.synonym_for` - a helper oriented towards Declarative :ref:`mapper_hybrids` - The Hybrid Attribute extension provides an updated approach to augmenting attribute behavior more flexibly than can be achieved with synonyms. N) rE r� r r' � map_columnr6 rC r< r4 rD r rL )r r' r� r6 rC r4 rD rO r r r & s pzSynonymProperty.__init__c C s t | jj| j�jjS r )r. r8 r7 r' r9 r r r r r r � s z SynonymProperty.uses_objectsc C sH t | jj| j�}t|d�r&t|jt�sBt� d| jjj | j|f ��|jS )Nr" zGsynonym() attribute "%s.%s" only supports ORM mapped attributes, got %r) r. r8 r7 r' r# rn r" r rr ZInvalidRequestErrorr )r rf r r r �_proxied_property� s ���z!SynonymProperty._proxied_propertyc C s* | j }| jr| �||�}n |�||�}|S r )r� rC )r r1 r �compr r r r0 � s z#SynonymProperty._comparator_factoryc O s" t | jj| j�}|jj|i |��S r )r. r8 r7 r' r9 r )r �arg�kwrf r r r r � s zSynonymProperty.get_historyc C s� | j r�| j|jjvr2t�d| j|jj| jf ��nN|jj| j |jv r�|j|jj| j j| jkr�t�d| j| j| j| jf ��t � |jj| j �}|j | j||dd� | j|_ || _ d S )Nz>Can't compile synonym '%s': no column on table '%s' named '%s'zpCan't call map_column=True for synonym %r=%r, a ColumnProperty already exists keyed to the name %r for column %rT)�initZ setparent)r� r Zpersist_selectable�crr rs r' � descriptionrq r ZColumnPropertyZ_configure_propertyZ_mapped_by_synonymr8 )r r8 r� r� r r r � set_parent� s> ��� �� ����� �zSynonymProperty.set_parent)NNNNN) r r r! r r" r r r� r� r0 r r� r� r r rO r r� $ s �| r� r> z�:func:`.comparable_property` is deprecated and will be removed in a future release. Please refer to the :mod:`~sqlalchemy.ext.hybrid` extension.c s* e Zd ZdZd� fdd� Zdd� Z� ZS )�ComparablePropertyz;Instruments a Python property for use in query expressions.Nc sF t t| ��� || _|| _|p*|r(|jp*d| _|r8|| _t� | � dS )a� Provides a method of applying a :class:`.PropComparator` to any Python descriptor attribute. Allows any Python descriptor to behave like a SQL-enabled attribute when used at the class level in queries, allowing redefinition of expression operator behavior. In the example below we redefine :meth:`.PropComparator.operate` to wrap both sides of an expression in ``func.lower()`` to produce case-insensitive comparison:: from sqlalchemy.orm import comparable_property from sqlalchemy.orm.interfaces import PropComparator from sqlalchemy.sql import func from sqlalchemy import Integer, String, Column from sqlalchemy.ext.declarative import declarative_base class CaseInsensitiveComparator(PropComparator): def __clause_element__(self): return self.prop def operate(self, op, other): return op( func.lower(self.__clause_element__()), func.lower(other) ) Base = declarative_base() class SearchWord(Base): __tablename__ = 'search_word' id = Column(Integer, primary_key=True) word = Column(String) word_insensitive = comparable_property(lambda prop, mapper: CaseInsensitiveComparator( mapper.c.word, mapper) ) A mapping like the above allows the ``word_insensitive`` attribute to render an expression like:: >>> print(SearchWord.word_insensitive == "Trucks") lower(search_word.word) = lower(:lower_1) :param comparator_factory: A PropComparator subclass or factory that defines operator behavior for this property. :param descriptor: Optional when used in a ``properties={}`` declaration. The Python descriptor or property to layer comparison behavior on top of. The like-named descriptor will be automatically retrieved from the mapped class if left blank in a ``properties`` declaration. :param info: Optional data dictionary which will be populated into the :attr:`.InspectionAttr.info` attribute of this object. .. versionadded:: 1.0.0 N) rE r� r r6 rC r< r4 rD r rL )r rC r6 r4 rD rO r r r � s BzComparableProperty.__init__c C s | � | |�S r r� rQ r r r r0 ; s z&ComparableProperty._comparator_factory)NNN)r r r! r< r r0 r� r r rO r r� � s �Jr� N)r< � r r r Z interfacesr r r r r r rr r r r r Z langhelpersZdependency_forr= r� r� Zdeprecated_clsr� r r r r �<module> s: < 5 C�
| ver. 1.1 | |
.
| PHP 8.3.30 | Ð“ÐµÐ½ÐµÑ€Ð°Ñ†Ð¸Ñ Ñтраницы: 0 |
proxy
|
phpinfo
|
ÐаÑтройка