관리-도구
편집 파일: exc.cpython-37.pyc
B ��4]� � @ s d Z ddlmZ ddlmZ eefZG dd� dej�Z e Z G dd� dej�Z G dd � d ej �Z G d d � d ej�ZG d d � d ej�ZG dd� de �ZG dd� de �ZG dd� dej �ZG dd� dej �ZG dd� dej �ZG dd� dej �ZG dd� dej �Zd d � Ze�d �d d � �Zd!S )"zSQLAlchemy ORM exceptions.� )�exc)�utilc @ s e Zd ZdZdS )�StaleDataErroraa An operation encountered database state that is unaccounted for. Conditions which cause this to happen include: * A flush may have attempted to update or delete rows and an unexpected number of rows were matched during the UPDATE or DELETE statement. Note that when version_id_col is used, rows in UPDATE or DELETE statements are also matched against the current known version identifier. * A mapped object with version_id_col was refreshed, and the version number coming back from the database does not match that of the object itself. * A object is detached from its parent object, however the object was previously attached to a different parent identity which was garbage collected, and a decision cannot be made if the new parent was really the most recent "parent". N)�__name__� __module__� __qualname__�__doc__� r r �E/opt/alt/python37/lib64/python3.7/site-packages/sqlalchemy/orm/exc.pyr s r c @ s e Zd ZdZdS )� FlushErrorz0A invalid condition was detected during flush().N)r r r r r r r r r - s r c @ s e Zd ZdZdS )� UnmappedErrorz?Base for exceptions that involve expected mappings not present.N)r r r r r r r r r 1 s r c @ s e Zd ZdZdS )�ObjectDereferencedErrorzPAn operation cannot complete due to an object being garbage collected. N)r r r r r r r r r 5 s r c @ s e Zd ZdZdZdS )�DetachedInstanceErrorzSAn attempt to access unloaded attributes on a mapped instance that is detached.Zbhk3N)r r r r �coder r r r r < s r c @ s, e Zd ZdZe�d�ddd��Zdd� ZdS ) �UnmappedInstanceErrorz;An mapping operation was requested for an unknown instance.zsqlalchemy.orm.baseNc C sz |sjy*|� t|�� tt|��}d||f }W n: tk rh tt|��}t|t�rd|dt|� 7 }Y nX t�| |� d S )Nz�Class %r is mapped, but this instance lacks instrumentation. This occurs when the instance is created before sqlalchemy.orm.mapper(%s) was called.z;; was a class (%s) supplied where an instance was required?)Z class_mapper�type�_safe_cls_name�UnmappedClassError�_default_unmapped� isinstancer �__init__)�self�base�obj�msg�namer r r r F s z UnmappedInstanceError.__init__c C s | j d | jd ffS )N� )� __class__�args)r r r r � __reduce__[ s z UnmappedInstanceError.__reduce__)N)r r r r r � dependenciesr r r r r r r C s r c @ s" e Zd ZdZddd�Zdd� ZdS )r z8An mapping operation was requested for an unknown class.Nc C s |s t |�}t�| |� d S )N)r r r )r �clsr r r r r b s zUnmappedClassError.__init__c C s | j d | jd ffS )Nr )r r )r r r r r g s z UnmappedClassError.__reduce__)N)r r r r r r r r r r r _ s r c @ s, e Zd ZdZe�d�ddd��Zdd� ZdS ) �ObjectDeletedErrora� A refresh operation failed to retrieve the database row corresponding to an object's known primary key identity. A refresh operation proceeds when an expired attribute is accessed on an object, or when :meth:`.Query.get` is used to retrieve an object which is, upon retrieval, detected as expired. A SELECT is emitted for the target row based on primary key; if no row is returned, this exception is raised. The true meaning of this exception is simply that no row exists for the primary key identifier associated with a persistent object. The row may have been deleted, or in some cases the primary key updated to a new value, outside of the ORM's management of the target object. zsqlalchemy.orm.baseNc C s$ |sd|� |� }tj�| |� d S )NzDInstance '%s' has been deleted, or its row is otherwise not present.)Z state_str�sa_exc�InvalidRequestErrorr )r r �stater r r r r s zObjectDeletedError.__init__c C s | j d | jd ffS )Nr )r r )r r r r r � s z ObjectDeletedError.__reduce__)N)r r r r r r r r r r r r r" k s r" c @ s e Zd ZdZdS )�UnmappedColumnErrorz5Mapping operation was requested on an unknown column.N)r r r r r r r r r& � s r& c @ s e Zd ZdZdS )� NoResultFoundz2A database result was required but none was found.N)r r r r r r r r r' � s r' c @ s e Zd ZdZdS )�MultipleResultsFoundzCA single database result was required but more than one were found.N)r r r r r r r r r( � s r( c @ s e Zd ZdZdd� ZdS )�LoaderStrategyExceptionz2A loader strategy for an attribute does not exist.c C sP |d kr t j�| d||f � n,t j�| dt�|�|t�|�t�|�f � d S )Nz Can't find strategy %s for %szuCan't apply "%s" strategy to property "%s", which is a "%s"; this loader strategy is intended to be used with a "%s".)r# r$ r r Zclsname_as_plain_name)r Zapplied_to_property_typeZrequesting_propertyZ applies_toZactual_strategy_typeZ strategy_keyr r r r � s z LoaderStrategyException.__init__N)r r r r r r r r r r) � s r) c C sL yd� | j| jf�}W n0 tk rF t| dd �}|d krBt| �}Y nX |S )N�.r )�joinr r �AttributeError�getattr�repr)r! Zcls_namer r r r � s r zsqlalchemy.orm.basec C sX y| � |�j}W n. tk r( i }Y n tk r> i }Y nX t|�}|sTd| S d S )NzClass '%s' is not mapped)Zmanager_of_class�mappers�NO_STATE� TypeErrorr )r r! r/ r r r r r � s r N)r � r r# r r, �KeyErrorr0 ZSQLAlchemyErrorr ZConcurrentModificationErrorr r$ r r r r r r" r& r' r( r) r r r r r r r �<module> s$ "