ÿØÿàJFIFÿþ ÿÛC       ÿÛC ÿÀÿÄÿÄ"#QrÿÄÿÄ&1!A"2qQaáÿÚ ?Øy,æ/3JæݹÈ߲؋5êXw²±ÉyˆR”¾I0ó2—PI¾IÌÚiMö¯–þrìN&"KgX:Šíµ•nTJnLK„…@!‰-ý ùúmë;ºgµŒ&ó±hw’¯Õ@”Ü— 9ñ-ë.²1<yà‚¹ïQÐU„ہ?.’¦èûbß±©Ö«Âw*VŒ) `$‰bØԟ’ëXÖ-ËTÜíGÚ3ð«g Ÿ§¯—Jx„–’U/ÂÅv_s(Hÿ@TñJÑãõçn­‚!ÈgfbÓc­:él[ðQe 9ÀPLbÃãCµm[5¿ç'ªjglå‡Ûí_§Úõl-;"PkÞÞÁQâ¼_Ñ^¢SŸx?"¸¦ùY騐ÒOÈ q’`~~ÚtËU¹CڒêV  I1Áß_ÿÙ 4]c@@sdZddlmZddlmZddlmZddlmZddlm Z dd lm Z dd lmZdd l m Z d gZ e jd efd YZdS(s|MapperProperty implementations. This is a private module which defines the behavior of individual ORM- mapped attributes. i(tabsolute_importi(t attributes(tPropComparator(tStrategizedProperty(t_orm_full_deannotatei(tlog(tutil(t expressiontColumnPropertycB@seZdZdZd#Zejd d$dZejdddZ dZ e dZ dZ dZdZejdZdZd ejefd!YZd"ZRS(%sDescribes an object attribute that corresponds to a table column. Public constructor is the :func:`.orm.column_property` function. tcolumnt _orig_columnstcolumnstgrouptdeferredt instrumenttcomparator_factoryt descriptort extensiontactive_historytexpire_on_flushtinfotdoct strategy_keyt_creation_ordert_is_polymorphic_discriminatort_mapped_by_synonymt_deferred_column_loaders0.7s:class:`.AttributeExtension` is deprecated in favor of the :class:`.AttributeEvents` listener interface. The :paramref:`.column_property.extension` parameter will be removed in a future release.cO@s tt|jg|D]}tj|^q|_g|D]}tjt|^q?|_|jdd|_ |jdt |_ |jdt |_|jd|jj|_|jdd|_|jdd|_|jdt |_|jdt |_d |kr2|jd |_nd |krS|jd |_nNxKt|jD]1}t|d d}|dk rc||_PqcqcWd|_|rtd |jjd jt|jfntj |d|j fd |jff|_!dS(s\ Provide a column-level property for use with a Mapper. Column-based properties can normally be applied to the mapper's ``properties`` dictionary using the :class:`.Column` element directly. Use this function when the given column is not directly present within the mapper's selectable; examples include SQL expressions, functions, and scalar SELECT queries. Columns that aren't present in the mapper's selectable won't be persisted by the mapper and are effectively "read-only" attributes. :param \*cols: list of Column objects to be mapped. :param active_history=False: When ``True``, indicates that the "previous" value for a scalar attribute should be loaded when replaced, if not already loaded. Normally, history tracking logic for simple non-primary-key scalar values only needs to be aware of the "new" value in order to perform a flush. This flag is available for applications that make use of :func:`.attributes.get_history` or :meth:`.Session.is_modified` which also need to know the "previous" value of the attribute. :param comparator_factory: a class which extends :class:`.ColumnProperty.Comparator` which provides custom SQL clause generation for comparison operations. :param group: a group name for this property when marked as deferred. :param deferred: when True, the column property is "deferred", meaning that it does not load immediately, and is instead loaded when the attribute is first accessed on an instance. See also :func:`~sqlalchemy.orm.deferred`. :param doc: optional string that will be applied as the doc on the class-bound descriptor. :param expire_on_flush=True: Disable expiry on flush. A column_property() which refers to a SQL expression (and not a single table-bound column) is considered to be a "read only" property; populating it has no effect on the state of data, and it can only return database state. For this reason a column_property()'s value is expired whenever the parent object is involved in a flush, that is, has any kind of "dirty" state within a flush. Setting this parameter to ``False`` will have the effect of leaving any existing value present after the flush proceeds. Note however that the :class:`.Session` with default expiration settings still expires all attributes after a :meth:`.Session.commit` call, however. :param info: Optional data dictionary which will be populated into the :attr:`.MapperProperty.info` attribute of this object. :param extension: an :class:`.AttributeExtension` instance, or list of extensions, which will be prepended to the list of attribute listeners for the resulting descriptor placed on the class. R R t _instrumentRRRRRRRs.%s received unexpected keyword argument(s): %ss, RN("tsuperRt__init__Rt_labeledR RR tpoptNoneR tFalseR tTrueRt __class__t ComparatorRRRRRRRtreversedtgetattrt TypeErrort__name__tjointsortedtkeysRtset_creation_orderR(tselfR tkwargstctcolR((sL/opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/properties.pyR:s:K%+     .  ssqlalchemy.orm.statessqlalchemy.orm.strategiescC@s+|jj|jj|j|j|jS(N(t InstanceStatet"_instance_level_callable_processortparentt class_managertLoadDeferredColumnstkey(R-tstatet strategies((sL/opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/properties.pyt&_memoized_attr__deferred_column_loaders  cC@s|jS(ssAllow the ColumnProperty to work in expression before it is turned into an instrumented attribute. (R(R-((sL/opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/properties.pyt__clause_element__scC@s |jdS(sJReturn the primary column or expression for this ColumnProperty. i(R (R-((sL/opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/properties.pyRsc C@sH|js dStj|j|jd|j||d|d|jdS(Nt comparatort parententityR(RRtregister_descriptortclass_R6RR(R-tmapper((sL/opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/properties.pytinstrument_classs  cC@s~tt|jt|jdkrzt|jjj|jrzt j d|j|jd|jd|j fndS(NisOn mapper %s, primary key column '%s' is being combined with distinct primary key column '%s' in attribute '%s'. Use explicit properties to give each column its own mapped attribute name.i( RRtdo_inittlenR tsetR3t primary_keyt issupersetRtwarnR6(R-((sL/opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/properties.pyRAs ' cC@s(td|jd|jd|j|jS(NR R R(RR R RR (R-((sL/opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/properties.pytcopys   cC@s"|j|jj||d|S(Ntpassive(tget_implR6tget_committed_value(R-R7tdict_R RH((sL/opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/properties.pyt _getcommittedsc C@s|js dS|j|krj||j} |s?| ||jR(R6(R-((sL/opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/properties.pyt__str__As(R R R R RRRRRRRRRRRRR(s0.7s:class:`.AttributeExtension` is deprecated in favor of the :class:`.AttributeEvents` listener interface. The :paramref:`.column_property.extension` parameter will be removed in a future release.(R(RjRktstrategy_wildcard_keyRlRtdeprecated_paramsRt dependenciesR9R:tpropertyRR@RARGRt PASSIVE_OFFRLRZt MemoizedSlotsRR$Ro(((sL/opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/properties.pyRs@ s    7N(Rkt __future__RtRt interfacesRRRRRtsqlRt__all__t class_loggerR(((sL/opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/properties.pyt s