o Rc@sddlmZddlZddlZddlZddlZddlm Z ej r%ddl m Z GdddZ Gdd d ZGd d d eZGd d d eZdddZdddZGdddeeejjZdS)) annotationsN)Query) SQLAlchemyc@s:eZdZdZejddd Zejdd d Zdd d ZdS)_QueryPropertyzRA class property that creates a query object for a model. :meta private: objNonecls t.Type[Model]returnrcCdSNselfrr rr8D:\Flask\env\Lib\site-packages\flask_sqlalchemy/model.py__get__z_QueryProperty.__get__ModelcCr r rrrrrrr Model | NonecCs|j||jdS)N)session) query_class__fsa__rrrrrrs N)rrr r r r)rrr r r r)rrr r r r)__name__ __module__ __qualname____doc__toverloadrrrrrrs  rc@sDeZdZUdZded< eZded< eZded< d d d Z d S)raThe base class of the :attr:`.SQLAlchemy.Model` declarative model class. To define models, subclass :attr:`db.Model <.SQLAlchemy.Model>`, not this. To customize ``db.Model``, subclass this and pass it as ``model_class`` to :class:`.SQLAlchemy`. To customize ``db.Model`` at the metaclass level, pass an already created declarative model class as ``model_class``. zt.ClassVar[SQLAlchemy]rzt.ClassVar[t.Type[Query]]rzt.ClassVar[Query]queryr strcCsdt|}|jrdt|d}n|jrdt|d}n dtt|j}dt |j d|dS)Nz (transient )z (pending z, < >) sainspect transientidpendingjoinmapr identitytyper)rstatepkrrr__repr__@s zModel.__repr__N)r r ) rrrr__annotations__rrrrr0rrrrr#s  rcs4eZdZUdZded<ded<dfdd ZZS) BindMetaMixinaMetaclass mixin that sets a model's ``metadata`` based on its ``__bind_key__``. If the model sets ``metadata`` or ``__table__`` directly, ``__bind_key__`` is ignored. If the ``metadata`` is the same as the parent model, it will not be set directly on the child model. rr sa.MetaDatametadatanamer basestuple[type, ...]ddict[str, t.Any]kwargst.Anyr rc sbd|jvs#d|jvs#t|dd}t|dd}|j|}||ur#||_tj|||fi|dS)Nr4 __table__Z __bind_key__)__dict__getattrrZ_make_metadatar4super__init__)r r5r6r8r:Zbind_keyZparent_metadatar4 __class__rrr@Xs   zBindMetaMixin.__init__ r5r r6r7r8r9r:r;r r)rrrrr1r@ __classcell__rrrArr2Ms r2csFeZdZUdZded<ded<ded<dfdd ZdddZZS) NameMetaMixinaPMetaclass mixin that sets a model's ``__tablename__`` by converting the ``CamelCase`` class name to ``snake_case``. A name is set for non-abstract models that do not otherwise define ``__tablename__``. If a model does not define a primary key, it will not generate a name or ``__table__``, for single-table inheritance. r3r4r __tablename__zsa.Tabler<r5r6r7r8r9r:r;r rc sbt|r t|j|_tj|||fi|d|jvr+d|jvr-|jddur/|`dSdSdSdS)NrFr<)should_set_tablenamecamel_to_snake_caserrFr?r@r=r<)r r5r6r8r:rArrr@qs   zNameMetaMixin.__init__argssa.Table | NonecOs|d}|dur|d}n |d|d}||jjvr%tj|i|S|D]}t|tjr2|js8t|tjrBtj|i|Sq'|j ddD] }d|j vrSn qJtj|i|Sd|j vrc|` dS) aThis is called by SQLAlchemy during mapper setup. It determines the final table object that the model will use. If no primary key is found, that indicates single-table inheritance, so no table will be created and ``__tablename__`` will be unset. schemaNr.rr<rF) getr4Ztablesr%Table isinstanceColumnZ primary_keyZPrimaryKeyConstraint__mro__r=rF)r rIr:rKkeyargbaserrr __table_cls__s(     zNameMetaMixin.__table_cls__rC)rIr;r:r;r rJ)rrrrr1r@rVrDrrrArrEfs rEr r-r boolcCs|jddstdd|jddDsdS|jD]*}d|jvr"qt|jdtjjr/dS||upA|jddpAt|tjj SdS) aDetermine whether ``__tablename__`` should be generated for a model. - If no class in the MRO sets a name, one should be generated. - If a declared attr is found, it should be used instead. - If a name is found, it should be used if the class is a mixin, otherwise one should be generated. - Abstract models should not have one generated. Later, ``__table_cls__`` will determine if the model looks like single or joined-table inheritance. If no primary key is found, the name will be unset. Z __abstract__Fcss|] }t|tjjVqdSr )rPr%ormDeclarativeMeta).0brrr s z'should_set_tablename..rNrFT) r=rNanyrRrPr%rXZ declared_attrrY)r rUrrrrGs    rGr5r cCstdd|}|dS)z/Convert a ``CamelCase`` name to ``snake_case``.z(((?<=[a-z0-9])[A-Z]|(?!^)[A-Z](?=[a-z]))z_\1_)resublowerlstrip)r5rrrrHsrHc@seZdZdZdS) DefaultMetazgSQLAlchemy declarative metaclass that provides ``__bind_key__`` and ``__tablename__`` support. N)rrrrrrrrrcsrc)r r-r rW)r5r r r ) __future__rr_typingrZ sqlalchemyr%Zsqlalchemy.ormrr TYPE_CHECKING extensionrrrr-r2rErGrHrXrYrcrrrrs   * E !