
H`Tc           @   sJ  d  Z  d d l m Z m Z d d l m Z d d l m Z m Z m Z d   Z d e	 f d     YZ
 d	 e	 f d
     YZ d e f d     YZ d e	 f d     YZ d e e f d     YZ d e f d     YZ d e f d     YZ d e f d     YZ d e f d     YZ d e f d     YZ d e f d     YZ d S(   s   The internals for the unit of work system.

The session's flush() process passes objects to a contextual object
here, which assembles flush tasks based on mappers and their properties,
organizes them in order of dependency, and executes.

i   (   t   utilt   event(   t   topologicali   (   t
   attributest   persistenceR    c            s   | j      f d   }   f d   }   f d   } t j |  d | d t d t t j |  d | d t d t t j |  d | d t d t d	 S(
   s\   Establish event listeners on object attributes which handle
    cascade-on-set/append.

    c            s   | d  k r d  S|  j } | r | j r8 | j d  n  |  j j j   } t j |  } | j	 j
 r | j s~   | j k r | j |  r | j |  q n  | S(   Ns   collection append(   t   Nonet   sessiont   _warn_on_eventst   _flush_warningt   managert   mappert   _propsR   t   instance_statet   _cascadet   save_updatet   cascade_backrefst   keyt   _contains_statet   _save_or_update_state(   t   statet   itemt	   initiatort   sesst   propt
   item_state(   R   (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   append   s    		c            s   | d  k r d  S|  j } | r |  j j j   } | j rZ | j | j rP d n d  n  t j	 |  } | j
 j r | | j k r | j j |  r | j |  q n  d  S(   Ns   collection removes   related attribute delete(   R   R   R	   R
   R   R   R   t   uselistR   R   R   t   delete_orphant   _newt
   _is_orphant   expunge(   R   R   R   R   R   R   (   R   (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   remove0   s    		
c      	      s-  | | k r | S|  j  } | r)| j r8 | j d  n  |  j j j   } | d  k	 r t j |  } | j	 j
 r | j s   | j k r | j |  r | j |  q n  | d  k	 r)| t j k	 r)| t j k	 r)| j	 j r)t j |  } | | j k r&| j j |  r&| j |  q&q)n  | S(   Ns   related attribute set(   R   R   R   R	   R
   R   R   R   R   R   R   R   R   R   R   t	   NEVER_SETt   PASSIVE_NO_RESULTR   R   R   R   (   R   t   newvaluet   oldvalueR   R   R   t   newvalue_statet   oldvalue_state(   R   (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   set_F   s,    		R   t   rawt   retvalR   t   setN(   R   R   t   listent   True(   t
   descriptorR   R   R   R&   (    (   R   s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   track_cascade_events   s    	 t   UOWTransactionc           B   s   e  Z d    Z e d    Z d   Z d   Z d   Z e j	 d  Z
 d   Z d   Z e e e d d d  Z d	   Z d
   Z e j d    Z d   Z d   Z d   Z d   Z d   Z RS(   c         C   sv   | |  _  i  |  _ t j t  |  _ t j t  |  _ i  |  _ i  |  _ t   |  _	 i  |  _
 t j d    |  _ d  S(   Nc           S   s   t    t    f S(   N(   R)   (    (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   <lambda>   s    (   R   R   R    t   defaultdictR)   t   depst   mapperst   presort_actionst   postsort_actionst   dependenciest   statest   post_update_states(   t   selfR   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   __init__l   s    					c         C   s   t  |  j  S(   N(   t   boolR6   (   R8   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   has_work   s    c         C   s   | |  j  k o |  j  | d S(   sW   return true if the given state is marked as deleted
        within this uowtransaction.i    (   R6   (   R8   R   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt
   is_deleted   s    c         C   s6   | |  j  k r |  j  | S|   |  j  | <} | Sd  S(   N(   R   (   R8   R   t	   callable_t   ret(    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   memo   s    c         C   s(   |  j  | d } | t f |  j  | <d S(   s;   remove pending actions for a state from the uowtransaction.i    N(   R6   R+   (   R8   R   t   isdelete(    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   remove_state_actions   s    c   	      C   s.  d | | f } | |  j  k r |  j  | \ } } } | t  j @r*| t  j @r*| j | j } | j | | j t  j t  j B } | r | j r | j	   } n | } | | | f |  j  | <q*ni | j | j } | j | | j | t  j B } | r| j r| j	   } n | } | | | f |  j  | <| S(   sO   facade to attributes.get_state_history(), including
        caching of results.t   history(
   R   t   SQL_OKR	   t   implt   get_historyt   dictt   PASSIVE_OFFt   LOAD_AGAINST_COMMITTEDt   uses_objectst   as_state(	   R8   R   R   t   passivet   hashkeyRB   t   state_historyt   cached_passiveRD   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   get_attribute_history   s,    c         C   s   | t  f |  j k S(   N(   R+   R3   (   R8   t	   processor(    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   has_dep   s    c         C   s8   | | f } | |  j  k r4 t | |  |  j  | <n  d  S(   N(   R3   t
   Preprocess(   R8   RP   t
   fromparentR   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   register_preprocessor   s    c         C   s   |  j  j |  sR | j rN | d  k	 rN t j d t j |  | | f  n  t S| |  j	 k r | j
 j } | |  j k r |  j |  n  |  j | j |  | | f |  j	 | <n) | r | s | r | t f |  j	 | <n  t S(   NsJ   Object of type %s not in session, %s operation along '%s' will not proceed(   R   R   t   deletedR   R    t   warnt   orm_utilt   state_class_strt   FalseR6   R	   R
   R2   t   _per_mapper_flush_actionst   addR+   (   R8   R   R@   t   listonlyt   cancel_deletet	   operationR   R
   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   register_object   s    	c         C   s@   | j  j j } |  j | \ } } | j |  | j |  d  S(   N(   R	   R
   t   base_mapperR7   R[   t   update(   R8   R   t   post_update_colsR
   R6   t   cols(    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   issue_post_update   s    c         C   s   t  |  | j  } t |  | j  } |  j j | | f  x | j D] } | j |   qD Wx6 | j D]+ } | j rz qe n  | j	 } | j |   qe Wd  S(   N(
   t   SaveUpdateAllR`   t	   DeleteAllR5   R[   t   _dependency_processorst   per_property_preprocessorst   relationshipst   viewonlyt   _dependency_processor(   R8   R
   t   savest   deletest   depR   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyRZ      s    		c         C   s   t  j d    S(   s  return a dynamic mapping of (Mapper, DependencyProcessor) to
        True or False, indicating if the DependencyProcessor operates
        on objects of that Mapper.

        The result is stored in the dictionary persistently once
        calculated.

        c         S   s(   |  d j  j |  d j  |  d j k S(   Ni    i   (   R   t   getR   R   (   t   tup(    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR/     s    (   R    t   PopulateDict(   R8   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   _mapper_for_dep  s    
c         C   s6   |  j  } g  | D]" } | | j j | f r | ^ q S(   sm   Filter the given list of InstanceStates to those relevant to the
        given DependencyProcessor.

        (   Rr   R	   R
   (   R8   Rn   R6   t   mapper_for_dept   s(    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   filter_states_for_dep  s    	c         c   sZ   | | f } xG | j  j D]9 } x0 |  j | D]! } |  j | | k r- | Vq- q- Wq Wd  S(   N(   R`   t   self_and_descendantsR2   R6   (   R8   R
   R@   R\   t   checktupR   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   states_for_mapper_hierarchy$  s
    c      	      s  xR t  rT t } x5 t   j j    D] } | j    r% t  } q% q% W| s Pq q Wt j   j t   j	 j       _
 } | rt   f d   | D  } xt   j  D] } d | k s | d j s | d j s | j |  r   j j |  q | d | k rV  j j |  x | | d D]  }   j j | | d f  q/Wq | d | k r   j j |  x3 | | d D]  }   j j | d | f  qWq q Wn  t g    j	 j   D] } | j s| ^ q j |  S(   s}   Generate the full, unsorted collection of PostSortRecs as
        well as dependency pairs for this UOWTransaction.

        c         3   s*   |  ]  } | t  | j     f Vq d  S(   N(   R)   t   per_state_flush_actions(   t   .0t   rec(   R8   (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pys	   <genexpr>D  s   i    i   N(   R+   RY   t   listR3   t   valuest   executeR   t   find_cyclesR5   R4   t   cyclesRF   R   t   disabledt
   issupersetR   R[   R)   t
   difference(   R8   R>   t   actionR   t   convertt   edgeRn   t   a(    (   R8   s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   _generate_actions+  s<    	!(c         C   s   |  j    } |  j ra xv t j |  j |  D]/ } x& | rY | j   } | j |  |  q4 Wq+ Wn- x* t j |  j |  D] } | j |   qw Wd  S(   N(	   R   R   R   t   sort_as_subsetsR5   t   popt   execute_aggregatet   sortR~   (   R8   R4   R&   t   nR{   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR~   ^  s    
				c         C   sa   t  |  j  } t  d   |  j j   D  } | j |  } |  j j |  |  j j |  d S(   s   mark processed objects as clean / deleted after a successful
        flush().

        this method is called within the flush() method after the
        execute() method has succeeded and the transaction has been committed.

        c         s   s'   |  ] \ } \ } } | r | Vq d  S(   N(    (   Rz   Rt   R@   R\   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pys	   <genexpr>  s    N(   R)   R6   t   itemsR   R   t   _remove_newly_deletedt   _register_newly_persistent(   R8   R6   t   isdelt   other(    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   finalize_flush_changesv  s    N(   t   __name__t
   __module__R9   t   propertyR;   R<   R?   RA   R   t   PASSIVE_NO_INITIALIZERO   RQ   RT   RY   R   R_   Rd   RZ   R    t   memoized_propertyRr   Ru   Rx   R   R~   R   (    (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR.   k   s&   	-			)							3	t   IterateMappersMixinc           B   s   e  Z d    Z RS(   c            s@     j  r/ t    f d     j j j D  S  j j j Sd  S(   Nc         3   s+   |  ]! }   j  |  j f r | Vq d  S(   N(   Rr   t   dependency_processor(   Rz   t   m(   t   uowR8   (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pys	   <genexpr>  s    (   RS   t   iterR   t   parentRv   R
   (   R8   R   (    (   R8   R   s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   _mappers  s
    	(   R   R   R   (    (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR     s   RR   c           B   s   e  Z d    Z d   Z RS(   c         C   s+   | |  _  | |  _ t   |  _ t |  _ d  S(   N(   R   RS   R)   t	   processedRY   t   setup_flush_actions(   R8   R   RS   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR9     s    		c         C   sU  t    } t    } xz |  j |  D]i } x` | j | j |  j  D]E } | j | \ } } | sB | rw | j |  q | j |  qB qB Wq" W| r |  j j | |  |  j j	 |  n  | r |  j j
 | |  |  j j	 |  n  | s | rM|  j rI|  j j | | t  s-|  j j | | t  rI|  j j |  t |  _ n  t St Sd  S(   N(   R)   R   R2   R   R   R6   R[   R   t   presort_deletesRa   t   presort_savesR   t   prop_has_changesR+   RY   t   per_property_flush_actions(   R8   R   t   delete_statest   save_statesR
   R   R@   R\   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR~     s2    		 
		(   R   R   R9   R~   (    (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyRR     s   	t   PostSortRecc           B   s)   e  Z e Z d    Z d   Z d   Z RS(   c         G   sI   |  f | } | | j  k r' | j  | St j |   | j  | <} | Sd  S(   N(   R4   t   objectt   __new__(   t   clsR   t   argsR   R>   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR     s
    c         C   s   |  j  |  d  S(   N(   R~   (   R8   R   t   recs(    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR     s    c         C   s0   d |  j  j d j d   |  j j   D  f S(   Ns   %s(%s)t   ,c         s   s   |  ] } t  |  Vq d  S(   N(   t   str(   Rz   t   x(    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pys	   <genexpr>  s    (   t	   __class__R   t   joint   __dict__R}   (   R8   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyt   __repr__  s    	(   R   R   RY   R   R   R   R   (    (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR     s   	
	t
   ProcessAllc           B   s5   e  Z d    Z d   Z d   Z d   Z d   Z RS(   c         C   s9   | |  _  | |  _ | |  _ | j | j j j |  d  S(   N(   R   t   deleteRS   R1   R   R`   R[   (   R8   R   R   R   RS   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR9     s
    			c         C   sE   |  j  |  } |  j r. |  j j | |  n |  j j | |  d  S(   N(   t	   _elementsR   R   t   process_deletest   process_saves(   R8   R   R6   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR~     s    	c         C   s
   t  g   S(   N(   R   (   R8   R   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyRy     s    c         C   s   d |  j  j |  j |  j f S(   Ns   %s(%s, delete=%s)(   R   R   R   R   (   R8   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR     s    	c         c   sg   x` |  j  |  D]O } xF | j | D]7 } | j | \ } } | |  j k r$ | r$ | Vq$ q$ Wq Wd  S(   N(   R   R2   R6   R   (   R8   R   R
   R   R@   R\   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR     s
    (   R   R   R9   R~   Ry   R   R   (    (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR     s
   				t   IssuePostUpdatec           B   s   e  Z d    Z d   Z RS(   c         C   s   | |  _  | |  _ d  S(   N(   R
   R@   (   R8   R   R
   R@   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR9     s    	c         C   sf   | j  |  j \ } } g  | D]& } | j | d |  j k r | ^ q } t j |  j | | |  d  S(   Ni    (   R7   R
   R6   R@   R   t   post_update(   R8   R   R6   Rc   Rt   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR~     s    3(   R   R   R9   R~   (    (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR     s   	Re   c           B   s#   e  Z d    Z d   Z d   Z RS(   c         C   s"   | |  _  | | j k s t  d  S(   N(   R
   R`   t   AssertionError(   R8   R   R
   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR9     s    	c         C   s,   t  j |  j | j |  j t t  |  d  S(   N(   R   t   save_objR
   Rx   RY   (   R8   R   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR~   
  s    c   	      c   s   t  | j |  j t t   } |  j j } t | |  } x; | D]3 } t | | |  } | j j | | f  | Vq@ Wx= | j	 |  j D]+ } | j
 | |  } | j | | t  q Wd  S(   N(   R|   Rx   R
   RY   R`   Rf   t   SaveUpdateStateR5   R[   R1   Ru   Ry   (	   R8   R   R6   R`   t
   delete_allR   R   Rn   t   states_for_prop(    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyRy     s    		(   R   R   R9   R~   Ry   (    (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyRe     s   		Rf   c           B   s#   e  Z d    Z d   Z d   Z RS(   c         C   s"   | |  _  | | j k s t  d  S(   N(   R
   R`   R   (   R8   R   R
   (    (    s_   /var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/unitofwork.pyR9   #  s    	c         C   s,   t  j |  j | j |  j t t  |  d  S(   N(   R   t
   delete_objR
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 |  j D]+ } | j | |  } | j | | t  q Wd  S(   N(   R|   Rx   R
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