3
gz                 @   sz   d dl Z d dlZd dlmZ d dlmZ d dlmZ G dd dZG dd dej	eZ
G d	d
 d
ZG dd de
ZdS )    N)import_module)router)QuerySetc                   s   e Zd ZdZdZdZ fddZ fddZdd Zd	d
 Z	dd Z
dd Zedd Zed$ddZdd Zdd Zd%ddZedd Zdd Zdd Zd d! Zd"d# Z  ZS )&BaseManagerr   Fc                s   t  j| }||f|_|S )N)super__new___constructor_args)clsargskwargsobj)	__class__ V/var/www/tester-filtro-web/env/lib/python3.6/site-packages/django/db/models/manager.pyr      s    
zBaseManager.__new__c                s.   t  j  | j  d | _d | _d | _i | _d S )N)r   __init___set_creation_countermodelname_db_hints)self)r   r   r   r      s    
zBaseManager.__init__c             C   s   d| j jj| jf S )z,Return "app_label.model_label.manager_name".z%s.%s)r   _metalabelr   )r   r   r   r   __str__"   s    zBaseManager.__str__c             O   s   | S )Nr   )r	   r
   r   r   r   r   __class_getitem__&   s    zBaseManager.__class_getitem__c             C   s   | j }t| ddr,ddd|j|jf ddfS | j}| jj}t|}t||s\td||f dd||f d| jd | jd fS dS )	z
        Return a 5-tuple of the form (as_manager (True), manager_class,
        queryset_class, args, kwargs).

        Raise a ValueError if the manager is dynamically generated.
        Z_built_with_as_managerFTNz%s.%szCould not find manager %s in %s.
Please note that you need to inherit from managers you dynamically generated with 'from_queryset()'.r      )	_queryset_classgetattr
__module____name__r   r   hasattr
ValueErrorr   )r   Zqs_classmodule_namer   moduler   r   r   deconstruct)   s&    

zBaseManager.deconstructc             K   s   g S )Nr   )r   r   r   r   r   checkN   s    zBaseManager.checkc             C   sl   dd }i }xZt j|t jdD ]F\}}t| |r2qt|dd }|s|d krV|jdrVq|||||< qW |S )Nc                s     fdd}|j |_ |j|_|S )Nc                s   t | j  ||S )N)r   get_queryset)r   r
   r   )r   r   r   manager_methodT   s    zPBaseManager._get_queryset_methods.<locals>.create_method.<locals>.manager_method)r   __doc__)r   methodr'   r   )r   r   create_methodS   s    z8BaseManager._get_queryset_methods.<locals>.create_method)	predicatequeryset_only_)inspect
getmembers
isfunctionr    r   
startswith)r	   queryset_classr*   Znew_methodsr   r)   r,   r   r   r   _get_queryset_methodsQ   s    
z!BaseManager._get_queryset_methodsNc             C   s4   |d krd| j |j f }t|| fd|i| j|S )Nz%sFrom%sr   )r   typer3   )r	   r2   
class_namer   r   r   from_querysetg   s
    zBaseManager.from_querysetc             C   s2   | j p|| _ || _t||t|  |jj|  d S )N)r   r   setattrManagerDescriptorr   Zadd_manager)r   r	   r   r   r   r   contribute_to_classp   s    zBaseManager.contribute_to_classc             C   s   t j| _t  jd7  _dS )zn
        Set the creation counter value for this instance and increment the
        class-level copy.
        r   N)r   creation_counter)r   r   r   r   r   x   s    z!BaseManager._set_creation_counterc             C   s&   t j | }|p| j|_|p| j|_|S )N)copyr   r   )r   usinghintsr   r   r   r   
db_manager   s    
zBaseManager.db_managerc             C   s   | j ptj| jf| jS )N)r   r   Zdb_for_readr   r   )r   r   r   r   db   s    zBaseManager.dbc             C   s   | j | j| j| jdS )z
        Return a new QuerySet object. Subclasses can override this method to
        customize the behavior of the Manager.
        )r   r<   r=   )r   r   r   r   )r   r   r   r   r&      s    zBaseManager.get_querysetc             C   s   | j  S )N)r&   )r   r   r   r   all   s    zBaseManager.allc             C   s   t || jo| j|jkS )N)
isinstancer   r   )r   otherr   r   r   __eq__   s    zBaseManager.__eq__c             C   s   t | S )N)id)r   r   r   r   __hash__   s    zBaseManager.__hash__)N)NN)r   r   __qualname__r:   Zauto_createdZuse_in_migrationsr   r   r   r   r$   r%   classmethodr3   r6   r9   r   r>   propertyr?   r&   r@   rC   rE   __classcell__r   r   )r   r   r   	   s(   %
	r   c               @   s   e Zd ZdS )ManagerN)r   r   rF   r   r   r   r   rJ      s   rJ   c               @   s   e Zd Zdd ZdddZdS )r8   c             C   s
   || _ d S )N)manager)r   rK   r   r   r   r      s    zManagerDescriptor.__init__Nc             C   s`   |d k	rt d|j |jjr0t d|jjf |jjrPt d|jj|jjf |jj| jj	 S )Nz)Manager isn't accessible via %s instancesz'Manager isn't available; %s is abstractz7Manager isn't available; '%s' has been swapped for '%s')
AttributeErrorr   r   ZabstractZobject_nameZswappedr   Zmanagers_maprK   r   )r   instancer	   r   r   r   __get__   s    zManagerDescriptor.__get__)N)r   r   rF   r   rN   r   r   r   r   r8      s   r8   c                   s(   e Zd Z fddZ fddZ  ZS )EmptyManagerc                s   t  j  || _d S )N)r   r   r   )r   r   )r   r   r   r      s    
zEmptyManager.__init__c                s   t  j j S )N)r   r&   none)r   )r   r   r   r&      s    zEmptyManager.get_queryset)r   r   rF   r   r&   rI   r   r   )r   r   rO      s   rO   )r;   r.   	importlibr   Z	django.dbr   Zdjango.db.models.queryr   r   r6   rJ   r8   rO   r   r   r   r   <module>   s     