OwlCyberSecurity - MANAGER
Edit File: indexes.cpython-39.pyc
a ���e_. � @ s� d dl mZmZ d dlmZmZmZmZmZ d dl m Z d dl m Z d dl mZ d dlmZ dgZG dd� d�ZG d d � d e�Zd S ) � )� names_digest�split_identifier)�Col�ExpressionList�F�Func�OrderBy��Collate)�Q)�Query)� partition�Indexc @ sz e Zd ZdZdZddddddd�dd�Zedd � �Zd d � Zdd d�Z dd� Z dd� Z dd� Z dd� Z dd� Zdd� ZdS ) r �idx� � N)�fields�name� db_tablespace� opclasses� condition�includec G st |r|st d��t|td �tf�s*t d��|r:|s:t d��t|ttf�sPt d��t|ttf�sft d��|sv|svt d��|r�|r�t d��|r�|s�t d��|r�|r�t d ��|r�t|�t|�kr�t d ��|r�td d � |D ��s�t d ��|r�|s�t d��t|td �ttf��st d��t|�| _dd� | jD �| _ |�p2d| _ || _ || _ || _ |�rVt|�nd| _tdd � |D ��| _d S )Nz(An index must be named to use opclasses.z%Index.condition must be a Q instance.z(An index must be named to use condition.z%Index.fields must be a list or tuple.z(Index.opclasses must be a list or tuple.z@At least one field or expression is required to define an index.z4Index.fields and expressions are mutually exclusive.z*An index must be named to use expressions.zgIndex.opclasses cannot be used with expressions. Use django.contrib.postgres.indexes.OpClass() instead.zGIndex.fields and Index.opclasses must have the same number of elements.c s s | ]}t |t�V qd S �N)� isinstance�str)�.0�fieldr r �Y/home/gouroczh/virtualenv/pat/3.9/lib/python3.9/site-packages/django/db/models/indexes.py� <genexpr>9 � z!Index.__init__.<locals>.<genexpr>z8Index.fields must contain only strings with field names.z A covering index must be named.z&Index.include must be a list or tuple.c S s. g | ]&}|� d �r"|dd� dfn|df�qS )�-� NZDESC� )� startswith�r � field_namer r r � <listcomp>A s �z"Index.__init__.<locals>.<listcomp>r" r c s s$ | ] }t |t�rt|�n|V qd S r )r r r )r � expressionr r r r J s �)� ValueErrorr �typer �list�tuple�len�allr � fields_ordersr r r r r � expressions)�selfr r r r r r r/ r r r �__init__ s\ ���� � �zIndex.__init__c C s t | j�S r )�boolr/ �r0 r r r �contains_expressionsO s zIndex.contains_expressionsc s` | j d u rd S t|dd�}|�| j �}|j� jd�}|�|� j�\}}|t� fdd�|D �� S )NF)�model� alias_cols)� connectionc 3 s | ]}� � |�V qd S r )Z quote_value)r �p�� schema_editorr r r Z r z+Index._get_condition_sql.<locals>.<genexpr>)r r Z build_whereZ get_compilerr7 �as_sqlr+ )r0 r5 r: �query�where�compiler�sql�paramsr r9 r �_get_condition_sqlS s zIndex._get_condition_sqlr" c s� � fdd�| j D �}| �� |�}| jrtg }| jD ]"}t|�} | �|j� |�| � q0t|� �t � dd��} d } d } nD� fdd�| j D �} |jj j r�dd� | j D �} ndgt | j � } d } |j� f| | j|| j| | j||| d� |��S ) Nc s g | ]}� j �|�j�qS r ��_meta� get_field�columnr$ �r5 r r r& ] s z$Index.create_sql.<locals>.<listcomp>F)r6 c s g | ]\}}� j �|��qS r )rC rD )r r% �_rF r r r& m s �c S s g | ] }|d �qS )r! r )r �orderr r r r& r r r" ) r r �usingr � col_suffixesr r r r/ )r rA r/ �IndexExpression�set_wrapper_classesr7 �appendr �resolve_expressionr r. �featuresZ supports_index_column_orderingr, Z_create_index_sqlr r r ) r0 r5 r: rI �kwargsr r �index_expressionsr' Zindex_expressionr/ r rJ r rF r � create_sql\ sJ � � � �� �zIndex.create_sqlc K s |j || jfi |��S r )Z_delete_index_sqlr )r0 r5 r: rP r r r � remove_sql� s zIndex.remove_sqlc C s� d| j j| j jf }|�dd�}d| ji}| jr:| j|d< | jd urN| j|d< | jr^| j|d< | jrn| j|d< | j r~| j |d < || j |fS ) Nz%s.%szdjango.db.models.indexeszdjango.db.modelsr r r r r r ) � __class__� __module__�__name__�replacer r r r r r r/ )r0 �pathrP r r r � deconstruct� s zIndex.deconstructc C s | � � \}}}| j|i |��S )z Create a copy of this Index.)rY rT )r0 rG �argsrP r r r �clone� s z Index.clonec s� t � jj�\}}� fdd�| jD �}dd� t|| j�D �}|g| | jg }d|dd� |d dd� d t|d d i�| jf f | _t| j�| j kr�t d ��| jd d ks�| jd � � r�d| jdd� | _dS )a Generate a unique name for the index. The name is divided into 3 parts - table name (12 chars), field name (8 chars) and unique hash + suffix (10 chars). Each part is made to fit its size by truncating the excess length. c s g | ]\}}� j �|�j�qS r rB )r r% rH rF r r r& � s �z-Index.set_name_with_model.<locals>.<listcomp>c S s$ g | ] \}\}}|rd nd| �qS )z-%sz%sr )r Z column_namer% rH r r r r& � s �z%s_%s_%sN� r � z%s_%s�length� zVIndex too long for multiple database support. Is self.suffix longer than 3 characters?rG zD%sr! ) r rC Zdb_tabler. �zip�suffixr r r, �max_name_lengthr( �isdigit)r0 r5 rG Z table_nameZ column_namesZcolumn_names_with_orderZ hash_datar rF r �set_name_with_model� s* ��� �� zIndex.set_name_with_modelc C s� d| j j| jsdn dt| j� | js(dn dt| j� | js>dn dt| j� | jd u rXdn dt| j� | jd u rrdnd| j | js�dn dt| j� | j s�dn d t| j � f S ) Nz<%s:%s%s%s%s%s%s%s>r" z fields=%sz expressions=%sz name=%sz db_tablespace=%sz condition=%sz include=%sz opclasses=%s) rT � __qualname__r �reprr/ r r r r r r3 r r r �__repr__� s � �zIndex.__repr__c C s | j |j kr | �� |�� kS tS r )rT rY �NotImplemented)r0 �otherr r r �__eq__� s z Index.__eq__)r" )rV rU re ra rb r1 �propertyr4 rA rR rS rY r[ rd rg rj r r r r r s& � > (#c sL e Zd ZdZdZeefZddd�Ze dd� �Z d� fd d � Z d d � Z � Z S )rK z7Order and wrap expressions for CREATE INDEX statements.z%(expressions)sNc C s& |r"|j jr"tdd� | jD ��| _d S )Nc S s g | ]}|t ur|�qS r r �r Z wrapper_clsr r r r& � s �z7IndexExpression.set_wrapper_classes.<locals>.<listcomp>)rO Zcollate_as_index_expressionr+ �wrapper_classes)r0 r7 r r r rL � s ��z#IndexExpression.set_wrapper_classesc G s || _ d S r )rm )�clsrm r r r �register_wrappers� s z!IndexExpression.register_wrappersTFc sb t � �� �}t� fdd�|�\}}dd� |D �} t| �tt| ��krbtdd�dd� � jD �� ��|dt|�d � |kr�td d�d d� � jD �� ��|d } | �|||||�} t | t �s�t | d d �} |�rBt |� fd d�d�}dd� |D �}t |d d� �D ] \} } | �|| d g� �q |d �| g� � �|d g� n � �| g� t� �|||||�S )Nc s t | � j�S r )r rm )�er3 r r �<lambda>� r z4IndexExpression.resolve_expression.<locals>.<lambda>c S s g | ] }t |��qS r )r) �r �wrapperr r r r& � r z6IndexExpression.resolve_expression.<locals>.<listcomp>zAMultiple references to %s can't be used in an indexed expression.z, c S s g | ] }|j �qS r �re rl r r r r& � r r! z8%s must be topmost expressions in an indexed expression.c S s g | ] }|j �qS r rt rl r r r r& r z(%(expressions)s))�templatec s � j �t| ��S r )rm �indexr) )�wr3 r r rq r )�keyc S s g | ] }|� � �qS r )�copyrr r r r r& r ���r )r* �flattenr r, �setr( �joinrm rN r r r �sorted� enumerateZset_source_expressions�super)r0 r< Z allow_joinsZreuseZ summarizeZfor_saver/ rQ ZwrappersZ wrapper_typesZroot_expressionZresolve_root_expression�irs �rT r3 r rN � s\ �������� � �z"IndexExpression.resolve_expressionc K s | j ||fi |��S r )r; )r0 r> r7 Z extra_contextr r r � as_sqlite% s zIndexExpression.as_sqlite)N)NTNFF)rV rU re �__doc__ru r r rm rL � classmethodro rN r� � __classcell__r r r� r rK � s �=rK N)Zdjango.db.backends.utilsr r Z django.db.models.expressionsr r r r r Zdjango.db.models.functionsr Z django.db.models.query_utilsr Zdjango.db.models.sqlr Zdjango.utils.functionalr �__all__r rK r r r r �<module> s I