3
g                  @   s   d dl Z d dlZd dlZd dlZd dlZd dlZd dlmZ d dlm	Z	 ej
dZG dd dZG dd deZd	d
 Zdd Zdd Zdd ZdddZdd Zdd Zdd ZdS )    N)contextmanager)NotSupportedErrorzdjango.db.backendsc               @   sx   e Zd Zdd ZeddddgZdd Zd	d
 Zdd Zdd Z	dddZ
dddZdd Zdd Zdd Zdd ZdS )CursorWrapperc             C   s   || _ || _d S )N)cursordb)selfr   r    r   V/var/www/tester-filtro-web/env/lib/python3.6/site-packages/django/db/backends/utils.py__init__   s    zCursorWrapper.__init__ZfetchoneZ	fetchmanyZfetchallZnextsetc             C   s*   t | j|}|tjkr"| jj|S |S d S )N)getattrr   r   WRAP_ERROR_ATTRSr   wrap_database_errors)r   attrZcursor_attrr   r   r	   __getattr__   s    
zCursorWrapper.__getattr__c          	   c   s$   | j j | jE d H  W d Q R X d S )N)r   r   r   )r   r   r   r	   __iter__   s    
zCursorWrapper.__iter__c             C   s   | S )Nr   )r   r   r   r	   	__enter__    s    zCursorWrapper.__enter__c             C   s,   y| j   W n | jjjk
r&   Y nX d S )N)closer   ZDatabaseError)r   typevalue	tracebackr   r   r	   __exit__#   s    zCursorWrapper.__exit__Nc             C   s   |d k	r| j jj rtd| j j  | j jP |d krL|d krL| jj|S |d krb| jj||S |phf }| jj|||S W d Q R X d S )NzKKeyword parameters for callproc are not supported on this database backend.)r   featuresZsupports_callproc_kwargsr   validate_no_broken_transactionr   r   callproc)r   ZprocnameparamsZkparamsr   r   r	   r   /   s    

zCursorWrapper.callprocc             C   s   | j ||d| jdS )NF)manyexecutor)_execute_with_wrappers_execute)r   sqlr   r   r   r	   executeA   s    zCursorWrapper.executec             C   s   | j ||d| jdS )NT)r   r   )r   _executemany)r   r    
param_listr   r   r	   executemanyD   s    zCursorWrapper.executemanyc             C   s<   | j | d}x t| j jD ]}tj||}qW |||||S )N)
connectionr   )r   reversedZexecute_wrappers	functoolspartial)r   r    r   r   r   contextwrapperr   r   r	   r   G   s    z$CursorWrapper._execute_with_wrappersc          
   G   sD   | j j  | j j( |d kr(| jj|S | jj||S W d Q R X d S )N)r   r   r   r   r!   )r   r    r   ignored_wrapper_argsr   r   r	   r   M   s
    

zCursorWrapper._executec          
   G   s,   | j j  | j j | jj||S Q R X d S )N)r   r   r   r   r$   )r   r    r#   r+   r   r   r	   r"   V   s    

zCursorWrapper._executemany)NN)N)__name__
__module____qualname__r
   	frozensetr   r   r   r   r   r   r!   r$   r   r   r"   r   r   r   r	   r      s   

	r   c                   s8   e Zd Zd	 fdd	Z fddZed
ddZ  ZS )CursorDebugWrapperNc          
      s*   | j ||dd t j||S Q R X d S )NT)use_last_executed_query)	debug_sqlsuperr!   )r   r    r   )	__class__r   r	   r!   `   s    zCursorDebugWrapper.executec          
      s*   | j ||dd t j||S Q R X d S )NT)r   )r2   r3   r$   )r   r    r#   )r4   r   r	   r$   d   s    zCursorDebugWrapper.executemanyFc       	      c   s   t j }z
d V  W d t j }|| }|r<| jjj| j||}y|rJt|nd}W n tk
rh   d}Y nX | jjj	|rd||f n|d| d t
jd||||||dd X d S )	N ?z%s times: %sz%.3f)r    timez(%.3f) %s; args=%s)durationr    r   )extra)r7   	monotonicr   opsZlast_executed_queryr   len	TypeErrorZqueries_logappendloggerdebug)	r   r    r   r1   r   startstopr8   timesr   r   r	   r2   h   s(    

zCursorDebugWrapper.debug_sql)N)NNFF)r,   r-   r.   r!   r$   r   r2   __classcell__r   r   )r4   r	   r0   \   s   r0   c             C   s   | rt jtt| jd S d S )N-)datetimedatemapintsplit)sr   r   r	   typecast_date   s    rL   c             C   s`   | sd S | j d\}}}d|kr0|j d\}}nd}tjt|t|t|t|d d d S )N:.0000000   )rJ   rF   r7   rI   )rK   hourminutessecondsmicrosecondsr   r   r	   typecast_time   s    rV   c             C   s   | sd S d| krt | S | j \}}d|kr>|jdd\}}nd|krV|jdd\}}|jd}|jd}|d }d|kr|jd\}}nd}tjt|d	 t|d t|d t|d	 t|d t|t|d
 d d S )N rE      +rM      rN   rO   r   rP   rQ   )rL   rJ   rF   rI   )rK   dt_datesrC   rT   rU   r   r   r	   typecast_timestamp   s&    

r_   c             C   sF   y| j d\}}W n tk
r0   d|  }}Y nX |jd|jdfS )z
    Split an SQL identifier into a two element tuple of (namespace, name).

    The identifier could be a table, column, or sequence name might be prefixed
    by a namespace.
    z"."r5   ")rJ   
ValueErrorstrip)
identifier	namespacenamer   r   r	   split_identifier   s
    rf      c             C   sV   t | \}}|dks t||kr$| S t||d}d|r>d| nd|d||  |f S )z
    Shorten an SQL identifier to a repeatable mangled version with the given
    length.

    If a quote stripped name contains a namespace, e.g. USERNAME"."TABLE,
    truncate the table portion only.
    N)lengthz%s%s%sz%s"."r5   )rf   r<   names_digest)rc   rh   Zhash_lenrd   re   digestr   r   r	   truncate_name   s
    rk   c             G   s4   t j }x|D ]}|j|j  qW |j d|  S )zk
    Generate a 32-bit digest of a set of arguments that can be used to shorten
    identifying names.
    N)hashlibmd5updateencode	hexdigest)rh   argshargr   r   r	   ri      s    
ri   c             C   sl   | dkrdS t j j }|dk	r&||_|dk	rL| jt jdj| |d} nd|jt j< |j	| } dj
| S )zc
    Format a number into a string with the requisite number of digits and
    decimal places.
    NrX   )r)   z{:f})decimal
getcontextcopyprecquantizeDecimalscalebZtrapsRoundedcreate_decimalformat)r   Z
max_digitsZdecimal_placesr)   r   r   r	   format_number   s    
r~   c             C   s(   | j do| jd}|r$| dd S | S )z
    Strip quotes off of quoted table names to make them safe for use in index
    names, sequence names, etc. For example '"USER"."TABLE"' (an Oracle naming
    scheme) becomes 'USER"."TABLE'.
    r`   rX   )
startswithendswith)Z
table_nameZ
has_quotesr   r   r	   strip_quotes   s    r   )Nrg   )rF   rt   r'   rl   loggingr7   
contextlibr   Z	django.dbr   	getLoggerr?   r   r0   rL   rV   r_   rf   rk   ri   r~   r   r   r   r   r	   <module>   s$   
N,
