H`Tc@@sdZddlmZddlmZmZmZmZm Z ddlm Z m Z m Z ddlm Z ddlmZdd lmZmZmZmZmZmZdd lmZmZmZdd lmZmZmZmZmZdd lm Z dd lm!Z"ddl#Z#dZ$dZ%e j&ej'j(ddefdYZ)dZ*de+fdYZ,de+fdYZ-dS(sHeuristics related to join conditions as used in :func:`.relationship`. Provides the :class:`.JoinCondition` object, which encapsulates SQL annotation and aliasing behavior focused on the `primaryjoin` and `secondaryjoin` aspects of :func:`.relationship`. i(tabsolute_importi(tsqltutiltexctschematlogi(tCascadeOptionst _orm_annotatet_orm_deannotate(t dependency(t attributes(t ClauseAdaptertjoin_conditiont_shallow_annotatetvisit_binary_productt_deep_deannotatetselectables_overlap(t operatorst expressiontvisitors(t MANYTOMANYt MANYTOONEt ONETOMANYtStrategizedPropertytPropComparator(tinspect(tmapperNcC@sttj|itd6S(sAnnotate a portion of a primaryjoin expression with a 'remote' annotation. See the section :ref:`relationship_custom_foreign` for a description of use. .. versionadded:: 0.8 .. seealso:: :ref:`relationship_custom_foreign` :func:`.foreign` tremote(t_annotate_columnsRt_clause_element_as_exprtTrue(texpr((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR#scC@sttj|itd6S(sAnnotate a portion of a primaryjoin expression with a 'foreign' annotation. See the section :ref:`relationship_custom_foreign` for a description of use. .. versionadded:: 0.8 .. seealso:: :ref:`relationship_custom_foreign` :func:`.remote` tforeign(RRRR(R((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR 7sssqlalchemy.orm.propertiestRelationshipPropertyc B@seZdZdZeZeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeedZdZ de fdYZ eedZ eeedZ dZd Zejd Zed Zd Zejd ZejejdddZdZdZdZdZdZdZe eeZ!dZ"dZ#dZ$dZ%ejdZ&ejdZ'eeeeedZ(RS(sDescribes an object property that holds a single item or list of items that correspond to a related database table. Public constructor is the :func:`.orm.relationship` function. See also: :ref:`relationship_config_toplevel` t relationshipc!!C@s||_||_||_||_||_| |_t|_| |_||_ ||_ ||_ ||_ ||_ ||_||_||_||_||_||_||_||_||_||_||_| |_||_|ptj|_|j|t|_tj || tk r6| |_!n|rH||_"n|j#d|j f|_"t$|_%| t&k r| nd|_'||_(| |_)|j)r|rt*j+dnt|_,n ||_,dS(sxProvide a relationship between two mapped classes. This corresponds to a parent-child or associative table relationship. The constructed class is an instance of :class:`.RelationshipProperty`. A typical :func:`.relationship`, used in a classical mapping:: mapper(Parent, properties={ 'children': relationship(Child) }) Some arguments accepted by :func:`.relationship` optionally accept a callable function, which when called produces the desired value. The callable is invoked by the parent :class:`.Mapper` at "mapper initialization" time, which happens only when mappers are first used, and is assumed to be after all mappings have been constructed. This can be used to resolve order-of-declaration and other dependency issues, such as if ``Child`` is declared below ``Parent`` in the same file:: mapper(Parent, properties={ "children":relationship(lambda: Child, order_by=lambda: Child.id) }) When using the :ref:`declarative_toplevel` extension, the Declarative initializer allows string arguments to be passed to :func:`.relationship`. These string arguments are converted into callables that evaluate the string as Python code, using the Declarative class-registry as a namespace. This allows the lookup of related classes to be automatic via their string name, and removes the need to import related classes at all into the local module space:: from sqlalchemy.ext.declarative import declarative_base Base = declarative_base() class Parent(Base): __tablename__ = 'parent' id = Column(Integer, primary_key=True) children = relationship("Child", order_by="Child.id") .. seealso:: :ref:`relationship_config_toplevel` - Full introductory and reference documentation for :func:`.relationship`. :ref:`orm_tutorial_relationship` - ORM tutorial introduction. :param argument: a mapped class, or actual :class:`.Mapper` instance, representing the target of the relationship. :paramref:`~.relationship.argument` may also be passed as a callable function which is evaluated at mapper initialization time, and may be passed as a Python-evaluable string when using Declarative. .. seealso:: :ref:`declarative_configuring_relationships` - further detail on relationship configuration when using Declarative. :param secondary: for a many-to-many relationship, specifies the intermediary table, and is typically an instance of :class:`.Table`. In less common circumstances, the argument may also be specified as an :class:`.Alias` construct, or even a :class:`.Join` construct. :paramref:`~.relationship.secondary` may also be passed as a callable function which is evaluated at mapper initialization time. When using Declarative, it may also be a string argument noting the name of a :class:`.Table` that is present in the :class:`.MetaData` collection associated with the parent-mapped :class:`.Table`. The :paramref:`~.relationship.secondary` keyword argument is typically applied in the case where the intermediary :class:`.Table` is not otherwise exprssed in any direct class mapping. If the "secondary" table is also explicitly mapped elsewhere (e.g. as in :ref:`association_pattern`), one should consider applying the :paramref:`~.relationship.viewonly` flag so that this :func:`.relationship` is not used for persistence operations which may conflict with those of the association object pattern. .. seealso:: :ref:`relationships_many_to_many` - Reference example of "many to many". :ref:`orm_tutorial_many_to_many` - ORM tutorial introduction to many-to-many relationships. :ref:`self_referential_many_to_many` - Specifics on using many-to-many in a self-referential case. :ref:`declarative_many_to_many` - Additional options when using Declarative. :ref:`association_pattern` - an alternative to :paramref:`~.relationship.secondary` when composing association table relationships, allowing additional attributes to be specified on the association table. :ref:`composite_secondary_join` - a lesser-used pattern which in some cases can enable complex :func:`.relationship` SQL conditions to be used. .. versionadded:: 0.9.2 :paramref:`~.relationship.secondary` works more effectively when referring to a :class:`.Join` instance. :param active_history=False: When ``True``, indicates that the "previous" value for a many-to-one reference should be loaded when replaced, if not already loaded. Normally, history tracking logic for simple many-to-ones 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` which also need to know the "previous" value of the attribute. :param backref: indicates the string name of a property to be placed on the related mapper's class that will handle this relationship in the other direction. The other property will be created automatically when the mappers are configured. Can also be passed as a :func:`.backref` object to control the configuration of the new relationship. .. seealso:: :ref:`relationships_backref` - Introductory documentation and examples. :paramref:`~.relationship.back_populates` - alternative form of backref specification. :func:`.backref` - allows control over :func:`.relationship` configuration when using :paramref:`~.relationship.backref`. :param back_populates: Takes a string name and has the same meaning as :paramref:`~.relationship.backref`, except the complementing property is **not** created automatically, and instead must be configured explicitly on the other mapper. The complementing property should also indicate :paramref:`~.relationship.back_populates` to this relationship to ensure proper functioning. .. seealso:: :ref:`relationships_backref` - Introductory documentation and examples. :paramref:`~.relationship.backref` - alternative form of backref specification. :param cascade: a comma-separated list of cascade rules which determines how Session operations should be "cascaded" from parent to child. This defaults to ``False``, which means the default cascade should be used - this default cascade is ``"save-update, merge"``. The available cascades are ``save-update``, ``merge``, ``expunge``, ``delete``, ``delete-orphan``, and ``refresh-expire``. An additional option, ``all`` indicates shorthand for ``"save-update, merge, refresh-expire, expunge, delete"``, and is often used as in ``"all, delete-orphan"`` to indicate that related objects should follow along with the parent object in all cases, and be deleted when de-associated. .. seealso:: :ref:`unitofwork_cascades` - Full detail on each of the available cascade options. :ref:`tutorial_delete_cascade` - Tutorial example describing a delete cascade. :param cascade_backrefs=True: a boolean value indicating if the ``save-update`` cascade should operate along an assignment event intercepted by a backref. When set to ``False``, the attribute managed by this relationship will not cascade an incoming transient object into the session of a persistent parent, if the event is received via backref. .. seealso:: :ref:`backref_cascade` - Full discussion and examples on how the :paramref:`~.relationship.cascade_backrefs` option is used. :param collection_class: a class or callable that returns a new list-holding object. will be used in place of a plain list for storing elements. .. seealso:: :ref:`custom_collections` - Introductory documentation and examples. :param comparator_factory: a class which extends :class:`.RelationshipProperty.Comparator` which provides custom SQL clause generation for comparison operations. .. seealso:: :class:`.PropComparator` - some detail on redefining comparators at this level. :ref:`custom_comparators` - Brief intro to this feature. :param distinct_target_key=None: Indicate if a "subquery" eager load should apply the DISTINCT keyword to the innermost SELECT statement. When left as ``None``, the DISTINCT keyword will be applied in those cases when the target columns do not comprise the full primary key of the target table. When set to ``True``, the DISTINCT keyword is applied to the innermost SELECT unconditionally. It may be desirable to set this flag to False when the DISTINCT is reducing performance of the innermost subquery beyond that of what duplicate innermost rows may be causing. .. versionadded:: 0.8.3 - :paramref:`~.relationship.distinct_target_key` allows the subquery eager loader to apply a DISTINCT modifier to the innermost SELECT. .. versionchanged:: 0.9.0 - :paramref:`~.relationship.distinct_target_key` now defaults to ``None``, so that the feature enables itself automatically for those cases where the innermost query targets a non-unique key. .. seealso:: :ref:`loading_toplevel` - includes an introduction to subquery eager loading. :param doc: docstring which will be applied to the resulting descriptor. :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. .. deprecated:: 0.7 Please see :class:`.AttributeEvents`. :param foreign_keys: a list of columns which are to be used as "foreign key" columns, or columns which refer to the value in a remote column, within the context of this :func:`.relationship` object's :paramref:`~.relationship.primaryjoin` condition. That is, if the :paramref:`~.relationship.primaryjoin` condition of this :func:`.relationship` is ``a.id == b.a_id``, and the values in ``b.a_id`` are required to be present in ``a.id``, then the "foreign key" column of this :func:`.relationship` is ``b.a_id``. In normal cases, the :paramref:`~.relationship.foreign_keys` parameter is **not required.** :func:`.relationship` will automatically determine which columns in the :paramref:`~.relationship.primaryjoin` conditition are to be considered "foreign key" columns based on those :class:`.Column` objects that specify :class:`.ForeignKey`, or are otherwise listed as referencing columns in a :class:`.ForeignKeyConstraint` construct. :paramref:`~.relationship.foreign_keys` is only needed when: 1. There is more than one way to construct a join from the local table to the remote table, as there are multiple foreign key references present. Setting ``foreign_keys`` will limit the :func:`.relationship` to consider just those columns specified here as "foreign". .. versionchanged:: 0.8 A multiple-foreign key join ambiguity can be resolved by setting the :paramref:`~.relationship.foreign_keys` parameter alone, without the need to explicitly set :paramref:`~.relationship.primaryjoin` as well. 2. The :class:`.Table` being mapped does not actually have :class:`.ForeignKey` or :class:`.ForeignKeyConstraint` constructs present, often because the table was reflected from a database that does not support foreign key reflection (MySQL MyISAM). 3. The :paramref:`~.relationship.primaryjoin` argument is used to construct a non-standard join condition, which makes use of columns or expressions that do not normally refer to their "parent" column, such as a join condition expressed by a complex comparison using a SQL function. The :func:`.relationship` construct will raise informative error messages that suggest the use of the :paramref:`~.relationship.foreign_keys` parameter when presented with an ambiguous condition. In typical cases, if :func:`.relationship` doesn't raise any exceptions, the :paramref:`~.relationship.foreign_keys` parameter is usually not needed. :paramref:`~.relationship.foreign_keys` may also be passed as a callable function which is evaluated at mapper initialization time, and may be passed as a Python-evaluable string when using Declarative. .. seealso:: :ref:`relationship_foreign_keys` :ref:`relationship_custom_foreign` :func:`.foreign` - allows direct annotation of the "foreign" columns within a :paramref:`~.relationship.primaryjoin` condition. .. versionadded:: 0.8 The :func:`.foreign` annotation can also be applied directly to the :paramref:`~.relationship.primaryjoin` expression, which is an alternate, more specific system of describing which columns in a particular :paramref:`~.relationship.primaryjoin` should be considered "foreign". :param info: Optional data dictionary which will be populated into the :attr:`.MapperProperty.info` attribute of this object. .. versionadded:: 0.8 :param innerjoin=False: when ``True``, joined eager loads will use an inner join to join against related tables instead of an outer join. The purpose of this option is generally one of performance, as inner joins generally perform better than outer joins. This flag can be set to ``True`` when the relationship references an object via many-to-one using local foreign keys that are not nullable, or when the reference is one-to-one or a collection that is guaranteed to have one or at least one entry. If the joined-eager load is chained onto an existing LEFT OUTER JOIN, ``innerjoin=True`` will be bypassed and the join will continue to chain as LEFT OUTER JOIN so that the results don't change. As an alternative, specify the value ``"nested"``. This will instead nest the join on the right side, e.g. using the form "a LEFT OUTER JOIN (b JOIN c)". .. versionadded:: 0.9.4 Added ``innerjoin="nested"`` option to support nesting of eager "inner" joins. .. seealso:: :ref:`what_kind_of_loading` - Discussion of some details of various loader options. :paramref:`.joinedload.innerjoin` - loader option version :param join_depth: when non-``None``, an integer value indicating how many levels deep "eager" loaders should join on a self-referring or cyclical relationship. The number counts how many times the same Mapper shall be present in the loading condition along a particular join branch. When left at its default of ``None``, eager loaders will stop chaining when they encounter a the same target mapper which is already higher up in the chain. This option applies both to joined- and subquery- eager loaders. .. seealso:: :ref:`self_referential_eager_loading` - Introductory documentation and examples. :param lazy='select': specifies how the related items should be loaded. Default value is ``select``. Values include: * ``select`` - items should be loaded lazily when the property is first accessed, using a separate SELECT statement, or identity map fetch for simple many-to-one references. * ``immediate`` - items should be loaded as the parents are loaded, using a separate SELECT statement, or identity map fetch for simple many-to-one references. * ``joined`` - items should be loaded "eagerly" in the same query as that of the parent, using a JOIN or LEFT OUTER JOIN. Whether the join is "outer" or not is determined by the :paramref:`~.relationship.innerjoin` parameter. * ``subquery`` - items should be loaded "eagerly" as the parents are loaded, using one additional SQL statement, which issues a JOIN to a subquery of the original statement, for each collection requested. * ``noload`` - no loading should occur at any time. This is to support "write-only" attributes, or attributes which are populated in some manner specific to the application. * ``dynamic`` - the attribute will return a pre-configured :class:`.Query` object for all read operations, onto which further filtering operations can be applied before iterating the results. See the section :ref:`dynamic_relationship` for more details. * True - a synonym for 'select' * False - a synonym for 'joined' * None - a synonym for 'noload' .. seealso:: :doc:`/orm/loading` - Full documentation on relationship loader configuration. :ref:`dynamic_relationship` - detail on the ``dynamic`` option. :param load_on_pending=False: Indicates loading behavior for transient or pending parent objects. When set to ``True``, causes the lazy-loader to issue a query for a parent object that is not persistent, meaning it has never been flushed. This may take effect for a pending object when autoflush is disabled, or for a transient object that has been "attached" to a :class:`.Session` but is not part of its pending collection. The :paramref:`~.relationship.load_on_pending` flag does not improve behavior when the ORM is used normally - object references should be constructed at the object level, not at the foreign key level, so that they are present in an ordinary way before a flush proceeds. This flag is not not intended for general use. .. seealso:: :meth:`.Session.enable_relationship_loading` - this method establishes "load on pending" behavior for the whole object, and also allows loading on objects that remain transient or detached. :param order_by: indicates the ordering that should be applied when loading these items. :paramref:`~.relationship.order_by` is expected to refer to one of the :class:`.Column` objects to which the target class is mapped, or the attribute itself bound to the target class which refers to the column. :paramref:`~.relationship.order_by` may also be passed as a callable function which is evaluated at mapper initialization time, and may be passed as a Python-evaluable string when using Declarative. :param passive_deletes=False: Indicates loading behavior during delete operations. A value of True indicates that unloaded child items should not be loaded during a delete operation on the parent. Normally, when a parent item is deleted, all child items are loaded so that they can either be marked as deleted, or have their foreign key to the parent set to NULL. Marking this flag as True usually implies an ON DELETE rule is in place which will handle updating/deleting child rows on the database side. Additionally, setting the flag to the string value 'all' will disable the "nulling out" of the child foreign keys, when there is no delete or delete-orphan cascade enabled. This is typically used when a triggering or error raise scenario is in place on the database side. Note that the foreign key attributes on in-session child objects will not be changed after a flush occurs so this is a very special use-case setting. .. seealso:: :ref:`passive_deletes` - Introductory documentation and examples. :param passive_updates=True: Indicates loading and INSERT/UPDATE/DELETE behavior when the source of a foreign key value changes (i.e. an "on update" cascade), which are typically the primary key columns of the source row. When True, it is assumed that ON UPDATE CASCADE is configured on the foreign key in the database, and that the database will handle propagation of an UPDATE from a source column to dependent rows. Note that with databases which enforce referential integrity (i.e. PostgreSQL, MySQL with InnoDB tables), ON UPDATE CASCADE is required for this operation. The relationship() will update the value of the attribute on related items which are locally present in the session during a flush. When False, it is assumed that the database does not enforce referential integrity and will not be issuing its own CASCADE operation for an update. The relationship() will issue the appropriate UPDATE statements to the database in response to the change of a referenced key, and items locally present in the session during a flush will also be refreshed. This flag should probably be set to False if primary key changes are expected and the database in use doesn't support CASCADE (i.e. SQLite, MySQL MyISAM tables). .. seealso:: :ref:`passive_updates` - Introductory documentation and examples. :paramref:`.mapper.passive_updates` - a similar flag which takes effect for joined-table inheritance mappings. :param post_update: this indicates that the relationship should be handled by a second UPDATE statement after an INSERT or before a DELETE. Currently, it also will issue an UPDATE after the instance was UPDATEd as well, although this technically should be improved. This flag is used to handle saving bi-directional dependencies between two individual rows (i.e. each row references the other), where it would otherwise be impossible to INSERT or DELETE both rows fully since one row exists before the other. Use this flag when a particular mapping arrangement will incur two rows that are dependent on each other, such as a table that has a one-to-many relationship to a set of child rows, and also has a column that references a single child row within that list (i.e. both tables contain a foreign key to each other). If a flush operation returns an error that a "cyclical dependency" was detected, this is a cue that you might want to use :paramref:`~.relationship.post_update` to "break" the cycle. .. seealso:: :ref:`post_update` - Introductory documentation and examples. :param primaryjoin: a SQL expression that will be used as the primary join of this child object against the parent object, or in a many-to-many relationship the join of the primary object to the association table. By default, this value is computed based on the foreign key relationships of the parent and child tables (or association table). :paramref:`~.relationship.primaryjoin` may also be passed as a callable function which is evaluated at mapper initialization time, and may be passed as a Python-evaluable string when using Declarative. .. seealso:: :ref:`relationship_primaryjoin` :param remote_side: used for self-referential relationships, indicates the column or list of columns that form the "remote side" of the relationship. :paramref:`.relationship.remote_side` may also be passed as a callable function which is evaluated at mapper initialization time, and may be passed as a Python-evaluable string when using Declarative. .. versionchanged:: 0.8 The :func:`.remote` annotation can also be applied directly to the ``primaryjoin`` expression, which is an alternate, more specific system of describing which columns in a particular ``primaryjoin`` should be considered "remote". .. seealso:: :ref:`self_referential` - in-depth explanation of how :paramref:`~.relationship.remote_side` is used to configure self-referential relationships. :func:`.remote` - an annotation function that accomplishes the same purpose as :paramref:`~.relationship.remote_side`, typically when a custom :paramref:`~.relationship.primaryjoin` condition is used. :param query_class: a :class:`.Query` subclass that will be used as the base of the "appender query" returned by a "dynamic" relationship, that is, a relationship that specifies ``lazy="dynamic"`` or was otherwise constructed using the :func:`.orm.dynamic_loader` function. .. seealso:: :ref:`dynamic_relationship` - Introduction to "dynamic" relationship loaders. :param secondaryjoin: a SQL expression that will be used as the join of an association table to the child object. By default, this value is computed based on the foreign key relationships of the association and child tables. :paramref:`~.relationship.secondaryjoin` may also be passed as a callable function which is evaluated at mapper initialization time, and may be passed as a Python-evaluable string when using Declarative. .. seealso:: :ref:`relationship_primaryjoin` :param single_parent: when True, installs a validator which will prevent objects from being associated with more than one parent at a time. This is used for many-to-one or many-to-many relationships that should be treated either as one-to-one or one-to-many. Its usage is optional, except for :func:`.relationship` constructs which are many-to-one or many-to-many and also specify the ``delete-orphan`` cascade option. The :func:`.relationship` construct itself will raise an error instructing when this option is required. .. seealso:: :ref:`unitofwork_cascades` - includes detail on when the :paramref:`~.relationship.single_parent` flag may be appropriate. :param uselist: a boolean that indicates if this property should be loaded as a list or a scalar. In most cases, this value is determined automatically by :func:`.relationship` at mapper configuration time, based on the type and direction of the relationship - one to many forms a list, many to one forms a scalar, many to many is a list. If a scalar is desired where normally a list would be present, such as a bi-directional one-to-one relationship, set :paramref:`~.relationship.uselist` to False. The :paramref:`~.relationship.uselist` flag is also available on an existing :func:`.relationship` construct as a read-only attribute, which can be used to determine if this :func:`.relationship` deals with collections or scalar attributes:: >>> User.addresses.property.uselist True .. seealso:: :ref:`relationships_one_to_one` - Introduction to the "one to one" relationship pattern, which is typically when the :paramref:`~.relationship.uselist` flag is needed. :param viewonly=False: when set to True, the relationship is used only for loading objects, and not for any persistence operation. A :func:`.relationship` which specifies :paramref:`~.relationship.viewonly` can work with a wider range of SQL operations within the :paramref:`~.relationship.primaryjoin` condition, including operations that feature the use of a variety of comparison operators as well as SQL functions such as :func:`~.sql.expression.cast`. The :paramref:`~.relationship.viewonly` flag is also of general use when defining any kind of :func:`~.relationship` that doesn't represent the full set of related objects, to prevent modifications of the collection from resulting in persistence operations. tlazyssave-update, mergesCbackref and back_populates keyword arguments are mutually exclusiveN(-tuselisttargumentt secondaryt primaryjoint secondaryjoint post_updatetNonet directiontviewonlyR#t single_parentt_user_defined_foreign_keystcollection_classtpassive_deletestcascade_backrefstpassive_updatest remote_sidetenable_typecheckst query_classt innerjointdistinct_target_keytdoctactive_historyt join_depthtlocal_remote_pairst extensiontload_on_pendingR!t Comparatortcomparator_factoryt comparatorRtset_creation_ordertinfotstrategy_classt_strategy_lookuptsett_reverse_propertytFalsetcascadetorder_bytback_populatestsa_exct ArgumentErrortbackref(!tselfR%R&R'R(t foreign_keysR$RIRMRJR)RHR<R,R#R/R0R2R3R4R:R?R-R6R7R8R9R1R=RCt_local_remote_pairsR5RB((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyt__init__^s`                                      c C@s;tj|j|jd|j||d|d|jdS(NR@t parententityR8(R tregister_descriptortclass_tkeyR?R8(RNR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pytinstrument_classGs  R>cB@seZdZdZdddZdZejdZ ejdZ dZ dZ dZ dZdZd Zdd Zdd Zdd Zd ZdZdZejdZRS(sProduce boolean, comparison, and other operators for :class:`.RelationshipProperty` attributes. See the documentation for :class:`.PropComparator` for a brief overview of ORM level operator definition. See also: :class:`.PropComparator` :class:`.ColumnProperty.Comparator` :class:`.ColumnOperators` :ref:`types_operators` :attr:`.TypeEngine.comparator_factory` cC@s1||_||_||_|r-||_ndS(sConstruction of :class:`.RelationshipProperty.Comparator` is internal to the ORM's attribute mechanics. N(tpropt _parentmappert_adapt_to_entityt_of_type(RNRWt parentmappertadapt_to_entitytof_type((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRQgs    cC@s%|j|j|jd|d|jS(NR\R](t __class__tpropertyRXRZ(RNR\((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR\sscC@s |jjS(sThe target :class:`.Mapper` referred to by this :class:`.RelationshipProperty.Comparator`. This is the "target" or "remote" side of the :func:`.relationship`. (R_R(RN((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRxs cC@s |jjS(N(R_tparent(RN((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyt _parententityscC@s$|jr|jjS|jjjSdS(N(RYt selectableR_R`t_with_polymorphic_selectable(RN((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyt_source_selectables  c C@s|j}|jr*t|jj}nd}|jjd|dtd|\}}}}}}|dk rw||@S|SdS(Ntsource_selectabletsource_polymorphicR](RdRZRRR*R_t _create_joinsR( RNt adapt_fromR]tpjtsjtsourcetdestR&ttarget_adapter((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyt__clause_element__s    cC@s%tj|j|jd|jd|S(sProduce a construct that represents a particular 'subtype' of attribute for the parent class. Currently this is usable in conjunction with :meth:`.Query.join` and :meth:`.Query.outerjoin`. R\R](R!R>R_RXRY(RNtcls((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR]s   cC@stddS(sProduce an IN clause - this is not implemented for :func:`~.orm.relationship`-based attributes at this time. svin_() not yet supported for relationships. For a simple many-to-one, use in_() against the set of foreign key values.N(tNotImplementedError(RNtother((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pytin_scC@st|tjtjfr`|jjttgkr>|j St |jj dd|j Sn=|jjr~tjdnt |jj |d|j SdS(sImplement the ``==`` operator. In a many-to-one context, such as:: MyClass.some_prop == this will typically produce a clause such as:: mytable.related_id == Where ```` is the primary key of the given object. The ``==`` operator provides partial functionality for non- many-to-one comparisons: * Comparisons against collections are not supported. Use :meth:`~.RelationshipProperty.Comparator.contains`. * Compared to a scalar one-to-many, will produce a clause that compares the target columns in the parent to the given target. * Compared to a scalar many-to-many, an alias of the association table will be rendered as well, forming a natural join that is part of the main body of the query. This will not work for queries that go beyond simple AND conjunctions of comparisons, such as those which use OR. Use explicit joins, outerjoins, or :meth:`~.RelationshipProperty.Comparator.has` for more comprehensive non-many-to-one scalar membership tests. * Comparisons against ``None`` given in a one-to-many or many-to-many context produce a NOT EXISTS clause. t adapt_sources]Can't compare a collection to an object or collection; use contains() to test for membership.N(t isinstanceRtNoneTypeRtNullR_R+RRt_criterion_existsRt_optimized_compareR*tadapterR$RKtInvalidRequestError(RNRq((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyt__eq__s%     cK@s,t|ddrt|j}|j|j|j}}}|jjr`| r`|j }n|j }|dk r|dk r||@}q|}qn t }d}|j r|j }nd}|jjdtd|d|\} } } } } }xO|D]G}t|jjj|||k}|dkr;|}q||@}qW| dk rht| | @}nt| d|jj}|dk r|r| r|j|}n|dk r|jitd6}n|tjj|@}tjdg|d| j| }| dk r(|j| }n|S( NRZtdest_polymorphictdest_selectableRetexcludetno_replacement_traverseitfrom_obj(tgetattrR*RRZRRbtis_aliased_classR_t_is_self_referentialtaliast_single_table_criterionRGRyRdRgRRTRR3ttraverset _annotateRtTrue_t_ifnonetexiststcorrelate_except(RNt criteriontkwargsRBt target_mappert to_selectableRt single_critReRiRjRkRlR&Rmtktcrittjtex((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRwsN         "    $ cK@s.|jjstjdn|j||S(smProduce an expression that tests a collection against particular criterion, using EXISTS. An expression like:: session.query(MyClass).filter( MyClass.somereference.any(SomeRelated.x==2) ) Will produce a query like:: SELECT * FROM my_table WHERE EXISTS (SELECT 1 FROM related WHERE related.my_id=my_table.id AND related.x=2) Because :meth:`~.RelationshipProperty.Comparator.any` uses a correlated subquery, its performance is not nearly as good when compared against large target tables as that of using a join. :meth:`~.RelationshipProperty.Comparator.any` is particularly useful for testing for empty collections:: session.query(MyClass).filter( ~MyClass.somereference.any() ) will produce:: SELECT * FROM my_table WHERE NOT EXISTS (SELECT 1 FROM related WHERE related.my_id=my_table.id) :meth:`~.RelationshipProperty.Comparator.any` is only valid for collections, i.e. a :func:`.relationship` that has ``uselist=True``. For scalar references, use :meth:`~.RelationshipProperty.Comparator.has`. s9'any()' not implemented for scalar attributes. Use has().(R_R$RKRzRw(RNRR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pytany.s)  cK@s.|jjrtjdn|j||S(sProduce an expression that tests a scalar reference against particular criterion, using EXISTS. An expression like:: session.query(MyClass).filter( MyClass.somereference.has(SomeRelated.x==2) ) Will produce a query like:: SELECT * FROM my_table WHERE EXISTS (SELECT 1 FROM related WHERE related.id==my_table.related_id AND related.x=2) Because :meth:`~.RelationshipProperty.Comparator.has` uses a correlated subquery, its performance is not nearly as good when compared against large target tables as that of using a join. :meth:`~.RelationshipProperty.Comparator.has` is only valid for scalar references, i.e. a :func:`.relationship` that has ``uselist=False``. For collection references, use :meth:`~.RelationshipProperty.Comparator.any`. s4'has()' not implemented for collections. Use any().(R_R$RKRzRw(RNRR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pythas_s  cK@sd|jjstjdn|jj|d|j}|jjdk r`|j||_ n|S(sd Return a simple expression that tests a collection for containment of a particular item. :meth:`~.RelationshipProperty.Comparator.contains` is only valid for a collection, i.e. a :func:`~.orm.relationship` that implements one-to-many or many-to-many with ``uselist=True``. When used in a simple one-to-many context, an expression like:: MyClass.contains(other) Produces a clause like:: mytable.id == Where ```` is the value of the foreign key attribute on ``other`` which refers to the primary key of its parent object. From this it follows that :meth:`~.RelationshipProperty.Comparator.contains` is very useful when used with simple one-to-many operations. For many-to-many operations, the behavior of :meth:`~.RelationshipProperty.Comparator.contains` has more caveats. The association table will be rendered in the statement, producing an "implicit" join, that is, includes multiple tables in the FROM clause which are equated in the WHERE clause:: query(MyClass).filter(MyClass.contains(other)) Produces a query like:: SELECT * FROM my_table, my_association_table AS my_association_table_1 WHERE my_table.id = my_association_table_1.parent_id AND my_association_table_1.child_id = Where ```` would be the primary key of ``other``. From the above, it is clear that :meth:`~.RelationshipProperty.Comparator.contains` will **not** work with many-to-many collections when used in queries that move beyond simple AND conjunctions, such as multiple :meth:`~.RelationshipProperty.Comparator.contains` expressions joined by OR. In such cases subqueries or explicit "outer joins" will need to be used instead. See :meth:`~.RelationshipProperty.Comparator.any` for a less-performant alternative using EXISTS, or refer to :meth:`.Query.outerjoin` as well as :ref:`ormtutorial_joins` for more details on constructing outer joins. s9'contains' not implemented for scalar attributes. Use ==RsN( R_R$RKRzRxRyR(R*t'_Comparator__negated_contains_or_equalstnegation_clause(RNRqRtclause((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pytcontainss8   c @s jjtkrtj|}fd}fd}jjrtjgjjD]H\}}tj |||||||k||dk^q^Sntjgt jj j jj j|D]\}}||k^q}j|S(Nc@s4|jtj|dtdfdS(Ntuniquet callable_c@sjjjS(N(R_Rt_get_committed_attr_by_column((RNtcolto(sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyts (tobjRt bindparamR(txtstateR(RN(RRsb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pytstate_bindparams c@sjrj|S|SdS(N(Ry(R(RN(sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pytadapts  (R_R+RR tinstance_statet_use_getRtand_R;tor_R*tzipRt primary_keytprimary_key_from_instanceRw(RNRqRRRRtyR((RNsb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyt__negated_contains_or_equalss \   +cC@st|tjtjfrf|jjtkrYtj g|jj D]}|dk^q@S|j Sn+|jj rtjdn |j|SdS(s$Implement the ``!=`` operator. In a many-to-one context, such as:: MyClass.some_prop != This will typically produce a clause such as:: mytable.related_id != Where ```` is the primary key of the given object. The ``!=`` operator provides partial functionality for non- many-to-one comparisons: * Comparisons against collections are not supported. Use :meth:`~.RelationshipProperty.Comparator.contains` in conjunction with :func:`~.expression.not_`. * Compared to a scalar one-to-many, will produce a clause that compares the target columns in the parent to the given target. * Compared to a scalar many-to-many, an alias of the association table will be rendered as well, forming a natural join that is part of the main body of the query. This will not work for queries that go beyond simple AND conjunctions of comparisons, such as those which use OR. Use explicit joins, outerjoins, or :meth:`~.RelationshipProperty.Comparator.has` in conjunction with :func:`~.expression.not_` for more comprehensive non-many-to-one scalar membership tests. * Comparisons against ``None`` given in a one-to-many or many-to-many context produce an EXISTS clause. s]Can't compare a collection to an object or collection; use contains() to test for membership.N(RtRRuRRvR_R+RRRt_calculated_foreign_keysR*RwR$RKRzR(RNRqR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyt__ne__s' #   cC@s#tjjrtjjn|jS(N(t mapperlibtMappert _new_mapperst_configure_allRW(RN((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR_s N(t__name__t __module__t__doc__R*RZRQR\Rtmemoized_propertyRRaRdRnR]Rrt__hash__R{RwRRRRRR_(((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR>Ps&       4 B 1 " E ! 5cC@s|tjkrs|dkrW|jr;tjdg|jS|jdd|d|Sq|j|d|d|Sn||j|SdS(Nitvalue_is_parenttalias_secondary( RteqR*R$RRR'RxR@(RNtoptvalueRR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pytcompare"s    cC@sA|dk rtj|}n|jj|d| d|d|S(Ntreverse_directionRRs(R*R Rt_lazy_strategyt lazy_clause(RNRRRsR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRx6s  cC@st|jjjd|jS(Nt.(tstrR`RTRRU(RN((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyt__str__AscC@sJ|r3x*|jD]}||f|krdSqWnd|jkrFdS|j|krYdS|jr|j|jj||} t| dr| j} n|r|j|jj||ng} xv| D]n} tj | } tj | } t || |f<|j | | d|d|}|dk r| j|qqW|s~tj|||j}x=| D]}|j|qdWqF|j|jj||| n||j} | dk rtj | } tj | } t || |f<|j | | d|d|}nd}|s$|||j:scs@s!|]}tj|dVqdS(R3N(RR (RR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pys AsN(sorder_bys primaryjoins secondaryjoins secondarys_user_defined_foreign_keyss remote_side(s primaryjoins secondaryjoin(RRRtsetattrR*RRR RIRGtto_listt column_sett to_column_setR.R3Rt mapped_tableR(RNtattrt attr_valuetvalR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRs,     4c!C@s td|jjd|jjd|jjd|jjd|jd|jd|jd|jjd |jjd |j d |j d |j d |j d|d|j d|j|_}|j|_|j|_|j|_|j |_ |j|_ |j|_|j|_|j|_|j|_dS(Ntparent_selectabletchild_selectabletparent_local_selectabletchild_local_selectableR'R&R(tparent_equivalentstchild_equivalentstconsider_as_foreign_keysR;R3tself_referentialRWt support_synctcan_be_synced_fn(t JoinConditionR`RRt local_tableR'R&R(t_equivalent_columnsR.R;R3RR,t_columns_are_mappedt_join_conditiontdeannotated_primaryjointdeannotated_secondaryjoinR+tremote_columnst local_columnstsynchronize_pairstforeign_key_columnsRtsecondary_synchronize_pairs(RNtjc((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRGs4                      cC@s|j ritj|jjdtj|j ritj d|j|jjj |jjj fn|jj sx^|jj D]J}||jk r|j|jrt jd|j|j|fqqWndS(sOTest that this relationship is legal, warn about inheritance conflicts.RsAttempting to assign a new relationship '%s' to a non-primary mapper on class '%s'. New relationships can only be added to the primary mapper, i.e. the very first mapper created for class '%s' sWarning: relationship '%s' on mapper '%s' supersedes the same relationship on inherited mapper '%s'; this can cause dependency issues during flushN(t is_primaryRRR`RTRGt has_propertyRURKRLRtconcretetiterate_to_rootRtwarn(RNt inheriting((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRds   cC@s|jS(s\Return the current cascade setting for this :class:`.RelationshipProperty`. (R(RN((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyt _get_cascadescC@sPt|}d|jkr+|j|n||_|jrL||j_ndS(NR(Rt__dict__RRt_dependency_processorRH(RNRH((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyt _set_cascades    c C@s|jrG|j rG|jtks1|jtkrGtjd|n|jtkrs|jrstj d|n|jdkrd|ksd|krtjd|n|jr|j j j j |j|jjfndS(NsOn %s, delete-orphan cascade is not supported on a many-to-many or many-to-one relationship when single_parent is not set. Set single_parent=True on the relationship().slOn %s, 'passive_deletes' is normally configured on one-to-many, one-to-one, many-to-many relationships only.tallRs delete-orphans^On %s, can't set passive_deletes='all' in conjunction with 'delete' or 'delete-orphan' cascade(t delete_orphanR-R+RRRKRLR0RR2Rtprimary_mappert_delete_orphansRRUR`RT(RNRH((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRs$        cG@srxk|D]c}|jdk r7|jjj|r7qn|jjjj| r|jjj| rtSqWtS(sReturn True if all columns in the given collection are mapped by the tables referenced by this :class:`.Relationship`. N( R&R*Rtcontains_columnR`RRRGR(RNtcolsR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR$s c C@s|jsdS|jdk r|j rt|jtjrQ|ji}}n|j\}}|jj}t |j j |j }x<|D]4}|j |rtjd|||fqqW|jdk r|jd|jj}|jd|jj}nB|jd|jj}|jdd}|rPtjdn|jd|j}|jj} |jd|j|jd|j|jd |j||_t| |j||d|d |j|} |j|| n|jr|j |jndS( shInterpret the 'backref' instruction to create a :func:`.relationship` complementary to this one.Ns]Error creating backref '%s' on relationship '%s': property of that name exists on mapper '%s'R'R(sOCan't assign 'secondaryjoin' on a backref against a non-secondary relationship.ROR,R)R2RJ(!R.RMR*RJRtRt string_typesRR:RER1tuniontself_and_descendantsR/RKRLR&tpopR%tsecondaryjoin_minus_localtprimaryjoin_minus_localtprimaryjoin_reverse_remoteRzR.R`t setdefaultR,R)R2R!RUt_configure_propertyR( RNt backref_keyRRtchecktmRiRjROR`R"((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR sX           cC@sI|jdkr$|jtk |_n|jsEtjj||_ndS(N( R$R*R+RR,R tDependencyProcessortfrom_relationshipR6(RN((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRs cC@s|j}|jS(sPmemoize the 'use_get' attribute of this RelationshipLoader's lazyloader.(Rtuse_get(RNtstrategy((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRs cC@s|jj|jS(N(RRR`(RN((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR sc C@sH|dkr0|r0|jjr0|jj}q0nt}|dkr|ri|jjri|jj}t}n |jj}|jr|dkr|j }t}qnt}|p|j}|j }|p|dk }|j j ||||\} } } } }|dkr|jj }n|dkr2|jj }n| | ||| | fS(N(R*R`twith_polymorphicRcRGRRRRRRR%t join_targetsR"( RNRfReR|R}R]taliasedt dest_mapperRR'R(R&Rm((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRgs0         !   ()RRRtstrategy_wildcard_keyR*R6RGRRQRVRR>RRxRRR RRRRRRRt deprecatedRR RRRR4R7R_RHRR$R RRRRg(((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR!Lsx     F 6  2       B c@s1fd|dk r-|}n|S(Nc@s>t|tjr*|jj}n|jd|S(Ntclone(RtRt ColumnClauseRtcopyt_copy_internals(telem(RTt annotations(sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRT6s(R*(telementRY((RTRYsb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR5s R!c B@seZd%d%d%d%d%d%d%d%ed%edd ZdZdZedZ edZ e j dZ dZe j dZe j d Zd Zd Zd Zd ZdZdZdZdZdZdZdZdZdZdZdZdZ dZ!dZ"e j dZ#e j dZ$e j dZ%e j dZ&e j d Z'd!Z(d"Z)d%d#Z*ed$Z+RS(&cG@stS(N(R(R((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRRscC@s||_||_||_||_||_| |_||_||_||_| |_ | |_ | |_ ||_ | |_ ||_||_|j|j|j|j|j|j|jt|jdk r|j|jtn|j|j|jdS(N(RRRRRRR'R(R&RRPt _remote_sideRWRRR t_determine_joinst _annotate_fkst_annotate_remotet_annotate_localt _setup_pairst_check_foreign_colsRR*RGt_determine_directiont_check_remote_sidet _log_joins(RNRRRRR'R&R(RRRR;R3RRWRR ((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRQBs6                       cC@sP|jdkrdS|jj}|jd|j|j|jd|j|j|jd|jdjd|jD|jd|jdjd|jpgD|jd|jdjd |j D|jd |jdjd |j D|jd |jdjd |j D|jd|j|j dS(Ns%s setup primary join %ss%s setup secondary join %ss%s synchronize pairs [%s]t,cs@s%|]\}}d||fVqdS(s (%s => %s)N((RtlR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pys yss#%s secondary synchronize pairs [%s]cs@s%|]\}}d||fVqdS(s (%s => %s)N((RRfR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pys |ss%s local/remote pairs [%s]cs@s%|]\}}d||fVqdS(s (%s / %s)N((RRfR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pys ss%s remote columns [%s]cs@s|]}d|VqdS(s%sN((RR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pys ss%s local columns [%s]cs@s|]}d|VqdS(s%sN((RR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pys ss%s relationship direction %s( RWR*tloggerRBR'R(tjoinR*R,R;R(R)R+(RNR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRdps,      c C@s|jdk r7|jdkr7tjd|jny|jpFd}|jdk r|jdkrt|j|jd|j d||_n|j dkrt|j |jd|j d||_ qn9|j dkrt|j |jd|j d||_ nWntj k rd|jdk rKtj d|j|jfqtj d|jn[tjk r|jdk rtjd|j|jfqtjd|jnXdS( sDetermine the 'primaryjoin' and 'secondaryjoin' attributes, if not passed to the constructor already. This is based on analysis of the foreign key relationships between the parent and target mapped selectables. sMProperty %s specified with secondary join condition but no secondary argumentta_subsetRs1Could not determine join condition between parent/child tables on relationship %s - there are no foreign keys linking these tables via secondary table '%s'. Ensure that referencing columns are associated with a ForeignKey or ForeignKeyConstraint, or specify 'primaryjoin' and 'secondaryjoin' expressions.sCould not determine join condition between parent/child tables on relationship %s - there are no foreign keys linking these tables. Ensure that referencing columns are associated with a ForeignKey or ForeignKeyConstraint, or specify a 'primaryjoin' expression.slCould not determine join condition between parent/child tables on relationship %s - there are multiple foreign key paths linking the tables via secondary table '%s'. Specify the 'foreign_keys' argument, providing a list of those columns which should be counted as containing a foreign key reference from the secondary table to each of the parent and child tables.s'Could not determine join condition between parent/child tables on relationship %s - there are multiple foreign key paths linking the tables. Specify the 'foreign_keys' argument, providing a list of those columns which should be counted as containing a foreign key reference to the parent table.N(R(R*R&RKRLRWRR RRR'RRtNoForeignKeysErrortAmbiguousForeignKeysError(RNR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR\sR       cC@st|jddS(NtvaluestlocalR(slocalsremote(RR'(RN((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRCscC@st|jddS(NRlRmR(slocalsremote(RR((RN((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRBs cC@sU|jr(d}tj|ji|S|jrDt|jddSt|jSdS(s(Return the primaryjoin condition suitable for the "reverse" direction. If the primaryjoin was delivered here with pre-existing "remote" annotations, the local/remote annotations are reversed. Otherwise, the local/remote annotations are removed. cS@s|d|jkr<|jj}|d=t|d<|j|Sd|jkrx|jj}|d=t|d<|j|SdS(NRRm(t _annotationsRVRt_with_annotations(RZtv((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pytreplaces   RlRmRN(slocalsremote(t_has_remote_annotationsRtreplacement_traverseR't_has_foreign_annotationsR(RNRq((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRDs    cC@s8x1tj|iD]}||jkrtSqWtSdS(N(RtiterateRnRRG(RNRt annotationR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyt_has_annotationscC@s|j|jdS(NR (RwR'(RN((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRtscC@s|j|jdS(NR(RwR'(RN((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRrscC@s1|jr dS|jr#|jn |jdS(sAnnotate the primaryjoin and secondaryjoin structures with 'foreign' annotations marking columns considered as foreign. N(RtRt_annotate_from_fk_listt_annotate_present_fks(RN((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR]s    c@s[fd}tjji|_jdk rWtjji|_ndS(Nc@s'|jkr#|jitd6SdS(NR (RRR(R(RN(sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pytcheck_fk-s(RRsR'R(R*(RNRz((RNsb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRx,s c@s|jdk r'tj|jjn tfdfd}tj|jii|d6|_|j dk rtj|j ii|d6|_ ndS(Nc@st|tjrMt|tjrM|j|r7|S|j|rM|Snr|kro|kro|S|kr|kr|SndS(N(RtRtColumnt references(tatb(t secondarycols(sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyt is_foreignBsc@st|jtj s,t|jtj r0dSd|jjkrd|jjkr|j|j}|dk r|j|jr|jjit d6|_q|j|jr|jjit d6|_qqndS(NR ( RttleftRt ColumnElementtrightRnR*RRR(tbinaryR(R(sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyt visit_binaryPs   R( R&R*RRRRERtcloned_traverseR'R((RNR((RRsb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRy<s c@sU|j|jtgfd}tj|jii|d6dS(svReturn True if the join condition contains column comparisons where both columns are in both tables. c@s|j|j}}t|tjrt|tjrj|jrj|jrj|jrj|jrtd| r>t|_qtjd|jn:|rit|_n(|r{t|_ntjd|jdS(s[Determine if this relationship is one to many, many to one, many to many. RR sDCan't determine relationship direction for relationship '%s' - foreign key columns within the join condition are present in both the parent and the child's mapped tables. Ensure that only those columns referring to a parent column are marked as foreign, either via the foreign() annotation or via the foreign_keys argument.sCan't determine relationship direction for relationship '%s' - foreign key columns are present in neither the parent nor the child's mapped tablesN(R(R*RR+RRRRRt intersectionR+RR'RERnR(R)t differenceRRRKRLRW( RNt parentcolst targetcolst onetomany_fkt manytoone_fktonetomany_localRtmanytoone_localt self_equated((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRbp sF              cC@s/g|D]$\}}|j|jf^qS(sprovide deannotation for the various lists of pairs, so that using them in hashes doesn't incur high-overhead __eq__() comparisons against original columns mapped. (t _deannotate(RNt collectionRR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyt_deannotate_pairs sc@sg}tjgg}fd}xKj|fj|fgD]+\}}|dkrjqLn|||qLWj_j|_j|_dS(Nc@s&fd}t||dS(Nc@sd|jkrCd|jkrCj|rCj||fnCd|jkrd|jkrj|rj||fn|jtjkrj||rd|jkrj||fqd|jkrj||fqndS(NRR (RnR RtoperatorRRR(RRR(RNRtlrp(sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR s(R(tjoincondRR(RNR(Rsb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pytgo s( Rt OrderedSetR'R(R*RR;R*R,(RNt sync_pairstsecondary_sync_pairsRRR((RNRsb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR` s  cC@s |jdS(NR(t_gather_join_annotations(RN((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR( scC@s |jdS(NRm(R(RN((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR) scC@s |jdS(NR (R(RN((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR+ scC@s t|jS(N(RR'(RN((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR& scC@s$|jdk rt|jSdSdS(N(R(R*R(RN((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR' s cC@slt|j|j|}|jdk rI|j|j|j|ntg|D]}|j^qSS(N(RERR'R(R*tupdateR(RNRvtsR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR scG@sGt|}tgtj|iD]}|j|jr"|^q"S(N(RERRutissubsetRn(RNRRvR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR s c C@st|itd6}|j|j|j}}}|dk re|dk rX||@}qe||@}n|r}|dk r|jdt}t|}t|d|jj |} |dk rt|j t|d|j }n| j |}n^t|dt dd|j}|dk rP|j t|dt dd|j nd} |j |}| pn|} d| _ nd} |||| |fS(s7Given a source and destination selectable, create a join between them. This takes into account aliasing the join clause to reference the appropriate corresponding columns in the target objects, as well as the extra child criterion, equivalent column sets, etc. Rtflatt equivalentst exclude_fnRmRN(R RR'R(R&R*RR RtchainRRt_ColInAnnotationsR( RNReR}RPRR'R(R&tprimary_aliasizertsecondary_aliasizerRm((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRO sL                   c @stjtjttj}rz|jdkrzxv|jD]-\}}|j||f||| s(Rt column_dictt collectionst defaultdicttlistR(R*R;RR'RRsRRtdictR( RNRtequated_columnsRfRRt lazywhereR(t bind_to_col((RRRsb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pytcreate_lazy_clause_ s0     N(,RRR*RGRRQRdR\R_RCRBRRRDRwRtRrR]RxRyRRR^RRRRRRR_RcRaRbRR`R(R)R+R&R'RRROR(((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR!As^  [!    0          6 O $ ERcB@s eZdZdZdZRS(sKSeralizable equivalent to: lambda c: "name" in c._annotations cC@s ||_dS(N(tname(RNR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyRQ scC@s|j|jkS(N(RRn(RNR((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyt__call__ s(RRRRQR(((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyR s (.Rt __future__RtRRRRKRRRRRR R tsql.utilR R R RRRRRRt interfacesRRRRRt inspectionRRRRRR t class_loggert langhelperstdependency_forR!RtobjectR!R(((sb/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/orm/relationships.pyts8(.(    R