OwlCyberSecurity - MANAGER
Edit File: ddl_references.cpython-39.pyc
a ���e� � @ s� d Z ddlmZ G dd� d�ZG dd� de�ZG dd� de�ZG d d � d e�ZG d d � d e�ZG d d� de�ZG dd� de�Z G dd� de�Z G dd� de�Z dS )z~ Helpers to manipulate deferred DDL statements that might need to be adjusted or discarded within when executing a migration. � )�deepcopyc @ s@ e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dS )� Referencez0Base class that defines the reference interface.c C s dS )zU Return whether or not this instance references the specified table. F� ��self�tabler r �b/home/gouroczh/virtualenv/pat/3.9/lib/python3.9/site-packages/django/db/backends/ddl_references.py�references_table s zReference.references_tablec C s dS )zV Return whether or not this instance references the specified column. Fr �r r �columnr r r �references_column s zReference.references_columnc C s dS )zI Rename all references to the old_name to the new_table. Nr �r � old_table� new_tabler r r �rename_table_references s z!Reference.rename_table_referencesc C s dS )zL Rename all references to the old_column to the new_column. Nr �r r � old_column� new_columnr r r �rename_column_references s z"Reference.rename_column_referencesc C s d| j jt| �f S )Nz<%s %r>)� __class__�__name__�str�r r r r �__repr__# s zReference.__repr__c C s t d��d S )Nz>Subclasses must define how they should be converted to string.)�NotImplementedErrorr r r r �__str__& s �zReference.__str__N) r � __module__� __qualname__�__doc__r r r r r r r r r r r s r c @ s0 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd S ) �Tablez Hold a reference to a table.c C s || _ || _d S �N)r � quote_name)r r r! r r r �__init__/ s zTable.__init__c C s | j |kS r �r r r r r r 3 s zTable.references_tablec C s | j |kr|| _ d S r r# r r r r r 6 s z Table.rename_table_referencesc C s | � | j�S r )r! r r r r r r : s z Table.__str__N)r r r r r" r r r r r r r r , s r c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) � TableColumnsz9Base class for references to multiple columns of a table.c C s || _ || _d S r �r �columns)r r r& r r r r" A s zTableColumns.__init__c C s | j |ko|| jv S r r% r r r r r E s z TableColumns.references_columnc C s4 | j |kr0t| j�D ]\}}||kr|| j|< qd S r )r � enumerater& )r r r r �indexr r r r r H s z%TableColumns.rename_column_referencesN)r r r r r" r r r r r r r$ > s r$ c s* e Zd ZdZd� fdd� Zdd� Z� ZS )�Columnsz(Hold a reference to one or many columns.r c s || _ || _t� �||� d S r )r! � col_suffixes�superr" )r r r& r! r* �r r r r" R s zColumns.__init__c s* �fdd�� d� � fdd�t�j�D ��S )Nc s@ � � | �}z � j| }|r&d�||�}W n ty: Y n0 |S �Nz{} {})r! r* �format� IndexError�r �idx�col�suffixr r r �col_strX s z Columns.__str__.<locals>.col_str�, c 3 s | ]\}}� ||�V qd S r r ��.0r1 r �r4 r r � <genexpr>b s z"Columns.__str__.<locals>.<genexpr>��joinr' r& r r �r4 r r r W s �zColumns.__str__)r �r r r r r" r � __classcell__r r r, r r) O s r) c s( e Zd ZdZ� fdd�Zdd� Z� ZS )� IndexNamez"Hold a reference to an index name.c s || _ || _t� �||� d S r )r3 �create_index_namer+ r" )r r r& r3 r@ r, r r r" j s zIndexName.__init__c C s | � | j| j| j�S r )r@ r r& r3 r r r r r o s zIndexName.__str__r= r r r, r r? g s r? c s& e Zd Zd� fdd� Zdd� Z� ZS )� IndexColumnsr c s || _ t� �||||� d S r )� opclassesr+ r" )r r r& r! r* rB r, r r r" t s zIndexColumns.__init__c s* �fdd�� d� � fdd�t�j�D ��S )Nc sN d� � �| �� j| �}z � j| }|r4d� ||�}W n tyH Y n0 |S r- )r. r! rB r* r/ r0 r r r r4 y s z%IndexColumns.__str__.<locals>.col_strr5 c 3 s | ]\}}� ||�V qd S r r r6 r8 r r r9 � s z'IndexColumns.__str__.<locals>.<genexpr>r: r r r< r r x s �zIndexColumns.__str__)r r )r r r r" r r> r r r, r rA s s rA c sX e Zd ZdZ� fdd�Z� fdd�Z� fdd�Z� fdd �Z� fd d �Zd d � Z � Z S )�ForeignKeyNamez'Hold a reference to a foreign key name.c s* t ||�| _|| _|| _t� �||� d S r )r$ � to_reference�suffix_template�create_fk_namer+ r" )r Z from_tableZ from_columns�to_tableZ to_columnsrE rF r, r r r" � s �zForeignKeyName.__init__c s t � �|�p| j�|�S r )r+ r rD r r, r r r � s �z ForeignKeyName.references_tablec s t � �||�p| j�||�S r )r+ r rD r r, r r r � s � �z ForeignKeyName.references_columnc s t � �||� | j�||� d S r )r+ r rD r r, r r r � s z&ForeignKeyName.rename_table_referencesc s$ t � �|||� | j�|||� d S r )r+ r rD r r, r r r � s z'ForeignKeyName.rename_column_referencesc C s. | j | jj| jjd d� }| �| j| j|�S )Nr )rG Z to_column)rE rD r r& rF )r r3 r r r r � s �zForeignKeyName.__str__) r r r r r" r r r r r r> r r r, r rC � s rC c @ s@ e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dS )� Statementz� Statement template and formatting parameters container. Allows keeping a reference to a statement without interpolating identifiers that might have to be adjusted if they're referencing a table or column that is removed c K s || _ || _d S r ��template�parts)r rJ rK r r r r" � s zStatement.__init__c s t � fdd�| j�� D ��S )Nc 3 s" | ]}t |d �o|�� �V qdS )r N)�hasattrr �r7 �partr# r r r9 � s �z-Statement.references_table.<locals>.<genexpr>��anyrK �valuesr r r# r r � s �zStatement.references_tablec s t � �fdd�| j�� D ��S )Nc 3 s$ | ] }t |d �o|��� �V qdS )r N)rL r rM �r r r r r9 � s �z.Statement.references_column.<locals>.<genexpr>rO r r rR r r � s �zStatement.references_columnc C s* | j �� D ]}t|d�r |�||� q d S )Nr )rK rQ rL r )r r r rN r r r r � s z!Statement.rename_table_referencesc C s, | j �� D ] }t|d�r |�|||� q d S )Nr )rK rQ rL r )r r r r rN r r r r � s z"Statement.rename_column_referencesc C s | j | j S r rI r r r r r � s zStatement.__str__N) r r r r r" r r r r r r r r r rH � s rH c s8 e Zd Z� fdd�Z� fdd�Zdd� Zdd� Z� ZS ) � Expressionsc s@ || _ || _|| _dd� | j j�| jg�D �}t� �||� d S )Nc S s g | ] }|j j�qS r )�targetr )r7 r2 r r r � <listcomp>� s �z(Expressions.__init__.<locals>.<listcomp>)�compiler� expressions� quote_value�query� _gen_colsr+ r" )r r rW rV rX r& r, r r r" � s �zExpressions.__init__c s2 | j |krd S | j�||i�| _t� �||� d S r )r rW Zrelabeled_cloner+ r r r, r r r � s z#Expressions.rename_table_referencesc C sb | j |krd S t| j�}g | _| jj�|g�D ](}|jj|krF||j_| j� |jj� q.|| _d S r ) r r rW r& rV rY rZ rT r �append)r r r r rW r2 r r r r � s z$Expressions.rename_column_referencesc C s* | j �| j�\}}t| j|�}|t|� S r )rV �compilerW �maprX �tuple)r �sql�paramsr r r r � s zExpressions.__str__)r r r r" r r r r> r r r, r rS � s rS N) r �copyr r r r$ r) r? rA rC rH rS r r r r �<module> s $ .'