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o �h/ � @ s| d Z ddlmZ ddlmZmZmZ ddlmZ g d�Z G dd� de�Z G dd � d e�Z G d d � d e�Z G d d � d e�Z dS )zR Query subclasses which provide extra functionality beyond simple data retrieval. � )� FieldError)�CURSOR�GET_ITERATOR_CHUNK_SIZE� NO_RESULTS)�Query)� DeleteQuery� UpdateQuery� InsertQuery�AggregateQueryc @ s$ e Zd ZdZdZdd� Zdd� ZdS )r zA DELETE SQL query.�SQLDeleteCompilerc C sX || j | i| _ || _| �|��t�}|r*|� |jW d � S 1 s%w Y dS )Nr )� alias_map�where� get_compiler� execute_sqlr �rowcount)�self�tabler �using�cursor� r �U/usr/local/CyberPanel/lib/python3.10/site-packages/django/db/models/sql/subqueries.py�do_query s �zDeleteQuery.do_queryc C sl d}| � � j}tdt|�t�D ]$}| �� | �|j� d�|||t � � || j| � � j | j |d�7 }q|S )z� Set up and execute delete queries for all the objects in pk_list. More than one physical query may be executed if there are a lot of values in pk_list. r �__in)r ) �get_meta�pk�range�lenr � clear_where� add_filter�attnamer �db_tabler )r �pk_listr � num_deleted�field�offsetr r r � delete_batch s � �zDeleteQuery.delete_batchN)�__name__� __module__� __qualname__�__doc__�compilerr r% r r r r r s r c s` e Zd ZdZdZ� fdd�Zdd� Z� fdd�Zd d � Zd d � Z d d� Z dd� Z dd� Z � Z S )r zAn UPDATE SQL query.�SQLUpdateCompilerc s t � j|i |�� | �� d S �N)�super�__init__� _setup_query)r �args�kwargs�� __class__r r r. 5 s zUpdateQuery.__init__c C s g | _ d| _i | _dS )z� Run on initialization and at the end of chaining. Any attributes that would normally be set in __init__() should go here instead. N)�values� related_ids�related_updates)r r r r r/ 9 s zUpdateQuery._setup_queryc s t � �� }| j�� |_|S r, )r- �cloner6 �copy)r �objr2 r r r7 B s zUpdateQuery.clonec C sT | � |� tdt|�t�D ]}| �� | �d|||t � � | �|��t� q d S )Nr �pk__in) �add_update_valuesr r r r r r r r )r r! r4 r r$ r r r � update_batchG s ��zUpdateQuery.update_batchc C s� g }|� � D ]A\}}| �� �|�}|jo|j p |j }|jjj}|r*|jr0|j r0t d| ��|| �� jur?| � |||� q|� |||f� q| � |�S )z� Convert a dictionary of field name to value mappings into an update query. This is the entry point for the public update() method on querysets. zMCannot update model field %r (only non-relations and foreign keys permitted).)�itemsr � get_field� auto_created�concrete�model�_meta�concrete_model� is_relation� many_to_manyr �add_related_update�append�add_update_fields)r r4 � values_seq�name�valr# �directrA r r r r; P s" � �� z UpdateQuery.add_update_valuesc C s@ |D ]\}}}t |d�r|j| ddd�}| j�|||f� qdS )z� Append a sequence of (field, model, value) triples to the internal list that will be used to generate the UPDATE query. Might be more usefully called add_update_targets() to hint at the extra information here. �resolve_expressionFT)� allow_joins�for_saveN)�hasattrrM r4 rG )r rI r# rA rK r r r rH h s �z UpdateQuery.add_update_fieldsc C s | j �|g ��|d|f� dS )z� Add (name, value) to an update query for an ancestor model. Update are coalesced so that only one update query per ancestor is run. N)r6 � setdefaultrG )r rA r# �valuer r r rF t s z UpdateQuery.add_related_updatec C sZ | j sg S g }| j �� D ] \}}t|�}||_| jdur%|�d| j| � |�|� q |S )z� Return a list of query objects: one for each update required to an ancestor model. Each query will have the same filtering conditions as the current query but will only update a single table. Nr: )r6 r= r r4 r5 r rG )r �resultrA r4 �queryr r r �get_related_updates| s z UpdateQuery.get_related_updates)r& r' r( r) r* r. r/ r7 r< r; rH rF rU � __classcell__r r r2 r r 0 s r c s4 e Zd ZdZdddd�� fdd� Zd dd�Z� ZS ) r �SQLInsertCompilerN)� on_conflict� update_fields� unique_fieldsc s< t � j|i |�� g | _g | _|| _|pg | _|pg | _d S r, )r- r. �fields�objsrX rY rZ )r rX rY rZ r0 r1 r2 r r r. � s zInsertQuery.__init__Fc C s || _ || _|| _d S r, )r[ r\ �raw)r r[ r\ r] r r r � insert_values� s zInsertQuery.insert_values)F)r& r' r( r* r. r^ rV r r r2 r r � s � r c s$ e Zd ZdZdZ� fdd�Z� ZS )r zu Take another query as a parameter to the FROM clause and only select the elements in the provided list. �SQLAggregateCompilerc s || _ t� �|� d S r, )� inner_queryr- r. )r rA r` r2 r r r. � s zAggregateQuery.__init__)r& r' r( r) r* r. rV r r r2 r r � s r N)r) �django.core.exceptionsr � django.db.models.sql.constantsr r r �django.db.models.sql.queryr �__all__r r r r r r r r �<module> s $^
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