Current File : //proc/self/root/opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyc
�
��4]c @ sS d Z d d l Z d d l m Z d d l m Z d d l m Z d d l m Z d d l m Z e j d d
� Z
e j d d � Z e j d
d � Z e j d d � Z
e j d d � Z e j d d d d �Z e j d d d d �Z e j d d d d �Z e j d d d d �Z e j d d d d �Z e j d! d" d d# �Z e j d$ d% d d& �Z e j d' d( d d) �Z e j d* d+ d d, �Z e j d- d. d e e Be Be Be B�Z e j d/ d0 d e e A�Z e j d1 d2 d e e A�Z e j d3 d4 d e e A�Z e j d5 d6 d e e A�Z e j d7 d8 d e e A�Z d9 Z d: Z de Z e j d= � Z! e j d> � Z" e j d? � Z# e j d@ dA � Z$ e j dB dC � Z% e j dD dE � Z& e j dF dG � Z' e( e g � Z) e( d e e
g � Z+ e j dH � Z, e j dI � Z- dJ � Z. dK � Z/ e j0 e � Z1 e j0 dL � Z2 dM � Z3 dN � Z4 dO � Z5 dP � Z6 dQ � Z7 dR � Z8 dS � Z9 e j: e; � dT � � Z< dU � Z= dV � Z> dW � Z? dX � Z@ dY � ZA dZ � ZB d[ � ZC e jD d\ � ZE e j: eF � eG d] � � ZH eI d^ � ZJ d_ e; f d` � � YZK da eK f db � � YZL dc e; f dd � � YZM d S(f s= Constants and rudimental functions used throughout the ORM.
i����Ni ( t exci ( t
inspection( t util( t
expressiont PASSIVE_NO_RESULTs� Symbol returned by a loader callable or other attribute/history
retrieval operation when a value could not be determined, based
on loader callable flags.
t ATTR_WAS_SETs� Symbol returned by a loader callable to indicate the
retrieved value, or values, were assigned to their attributes
on the target object.
t
ATTR_EMPTYs@ Symbol used internally to indicate an attribute had no callable.t NO_VALUEs� Symbol which may be placed as the 'previous' value of an attribute,
indicating no value was loaded for an attribute when it was modified,
and flags indicated we were not to load it.
t NEVER_SETs� Symbol which may be placed as the 'previous' value of an attribute
indicating that the attribute had not been assigned to previously.
t NO_CHANGEs] No callables or SQL should be emitted on attribute access
and no state should change
t canonicali t CALLABLES_OKsE Loader callables can be fired off if a value
is not present.
t SQL_OKsB Loader callables can emit SQL at least on scalar value attributes.t RELATED_OBJECT_OKsZ Callables can use SQL to load related objects as well
as scalar value attributes.
i t INIT_OKs� Attributes should be initialized with a blank
value (None or an empty collection) upon get, if no other
value can be obtained.
i t NON_PERSISTENT_OKs9 Callables can be emitted if the parent is not persistent.i t LOAD_AGAINST_COMMITTEDsU Callables should use committed values as primary/foreign keys during a
load.
i t NO_AUTOFLUSHs* Loader callables should disable autoflush.i@ t NO_RAISEs0 Loader callables should not raise any assertionsi� t PASSIVE_OFFs& Callables can be emitted in all cases.t PASSIVE_RETURN_NEVER_SETs PASSIVE_OFF ^ INIT_OKt PASSIVE_NO_INITIALIZEs' PASSIVE_RETURN_NEVER_SET ^ CALLABLES_OKt PASSIVE_NO_FETCHs PASSIVE_OFF ^ SQL_OKt PASSIVE_NO_FETCH_RELATEDs PASSIVE_OFF ^ RELATED_OBJECT_OKt PASSIVE_ONLY_PERSISTENTs PASSIVE_OFF ^ NON_PERSISTENT_OKt _sa_class_managert _sa_instance_statet mappert instrumentort EXT_CONTINUEt EXT_STOPt EXT_SKIPt ONETOMANYs� Indicates the one-to-many direction for a :func:`.relationship`.
This symbol is typically used by the internals but may be exposed within
certain API features.
t MANYTOONEs� Indicates the many-to-one direction for a :func:`.relationship`.
This symbol is typically used by the internals but may be exposed within
certain API features.
t
MANYTOMANYs� Indicates the many-to-many direction for a :func:`.relationship`.
This symbol is typically used by the internals but may be exposed within
certain API features.
t
NOT_EXTENSIONs� Symbol indicating an :class:`InspectionAttr` that's
not part of sqlalchemy.ext.
Is assigned to the :attr:`.InspectionAttr.extension_type`
attribute.
t SET_DEFERRED_EXPIREDt DEFER_FOR_STATEc s t j � f d � � } | S( s1 Mark a method as generative, e.g. method-chained.c sI | d j � } x � D] } | | | j � q W| | | d | � | S( Ni i ( t _clonet __name__( t fnt argst kwt selft assertion( t
assertions( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt generate� s
( R t decorator( R- R. ( ( R- sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt _generative� s c C s | j j t d � S( N( t __dict__t gett DEFAULT_MANAGER_ATTRt None( t cls( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt manager_of_class� s R1 c C s t t | � � S( s' Return a string describing an instance.( t state_strt instance_state( t instance( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt instance_str� s c C s4 | d k r d Sd | j j t | j � � f Sd S( s= Return a string describing an instance via its InstanceState.R4 s <%s at 0x%x>N( R4 t class_R' t idt obj( t state( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyR7 � s c C s% | d k r d Sd | j j f Sd S( sN Return a string describing an instance's class via its
InstanceState.
R4 s <%s>N( R4 R; R' ( R> ( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt state_class_str� s c C s t | � d | S( Nt .( R: ( R9 t attribute( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt
attribute_str s c C s t | � d | S( NR@ ( R7 ( R> RA ( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt state_attribute_str s c C s
t | � j S( s� Given an object, return the primary Mapper associated with the object
instance.
Raises :class:`sqlalchemy.orm.exc.UnmappedInstanceError`
if no mapping is configured.
This function is available via the inspection system as::
inspect(instance).mapper
Using the inspection system will raise
:class:`sqlalchemy.exc.NoInspectionAvailable` if the instance is
not part of a mapping.
( t object_stateR ( R9 ( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt
object_mapper s c C s2 t | � } | d k r* t j | � � n | Sd S( s� Given an object, return the :class:`.InstanceState`
associated with the object.
Raises :class:`sqlalchemy.orm.exc.UnmappedInstanceError`
if no mapping is configured.
Equivalent functionality is available via the :func:`.inspect`
function as::
inspect(instance)
Using the inspection system will raise
:class:`sqlalchemy.exc.NoInspectionAvailable` if the instance is
not part of a mapping.
N( t _inspect_mapped_objectR4 R t UnmappedInstanceError( R9 R> ( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyRD " s c C s> y t | � SWn) t j k
r% d St j k
r9 d SXd S( N( R8 R t UnmappedClassErrorR4 t NO_STATE( R9 ( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyRF : s c C s8 t j | t � } | d k r% | j St j | � � d S( N( R t inspectt FalseR4 R R RH ( t class_or_mappert insp( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt _class_to_mapperF s c C s- t j | t � } | d k r% | j Sd Sd S( s\ Return the :class:`.Mapper` for the given class or None if the
class is not mapped.
N( R RJ RK R4 R ( t entityRM ( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt _mapper_or_noneN s c C s8 t j | t � } | d k o7 | j o7 | j p7 | j S( sh Return True if the given object is a mapped class,
:class:`.Mapper`, or :class:`.AliasedClass`.
N( R RJ RK R4 t is_clause_elementt is_mappert is_aliased_class( RO RM ( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt _is_mapped_classZ s
c C s' t | d � r | j St j | � Sd S( Nt key( t hasattrRU R t _column_as_key( t attr( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt _attr_as_keyg s c C s[ t j | t � } t | d � rP t | j d � rP g | j j D] } | ^ q@ S| g Sd S( Nt
selectablet c( R RJ RK RV RZ R[ ( RO RM R[ ( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt _orm_columnsn s ! c C s. t j | t � } | d k o- t | d t � S( NRS ( R RJ RK R4 t getattr( RO RM ( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt _is_aliased_classv s c C s� t j | � } | j r* | } | j } nC | j rE | j } | } n( t | d � rg | j j } } n | } y t | | � SWn* t
k
r� t j d | | f � � n Xd S( s� Return a class attribute given an entity and string name.
May return :class:`.InstrumentedAttribute` or user-defined
attribute.
R s Entity '%s' has no property '%s'N(
R RJ t
is_selectableR[ RS RO RV R R; R] t AttributeErrort sa_exct InvalidRequestError( RO RU RM t description( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt _entity_descriptor{ s
s manager.mapperc C sb y& t | � } | j s d S| j } Wn t j k
r= d SX| rZ | j rZ | j � n | Sd S( N( R6 t is_mappedR4 R R RI t _new_mapperst _configure_all( R; t configuret
class_managerR ( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt _inspect_mapped_class� s
c C s` t | d | �} | d k rX t | t � sF t j d | f � � n t j | � � n | Sd S( s� Given a class, return the primary :class:`.Mapper` associated
with the key.
Raises :exc:`.UnmappedClassError` if no mapping is configured
on the given class, or :exc:`.ArgumentError` if a non-class
object is passed.
Equivalent functionality is available via the :func:`.inspect`
function as::
inspect(some_mapped_class)
Using the inspection system will raise
:class:`sqlalchemy.exc.NoInspectionAvailable` if the class is not mapped.
Rh s Class object expected, got '%r'.N( Rj R4 t
isinstancet typeRa t
ArgumentErrorR RH ( R; Rh R ( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt class_mapper� s t InspectionAttrc B sJ e Z d Z d Z e Z e Z e Z e Z e Z e Z
e Z e Z e
Z RS( s A base class applied to all ORM objects that can be returned
by the :func:`.inspect` function.
The attributes defined here allow the usage of simple boolean
checks to test basic facts about the object returned.
While the boolean checks here are basically the same as using
the Python isinstance() function, the flags here can be used without
the need to import all of these classes, and also such that
the SQLAlchemy class system can change while leaving the flags
here intact for forwards-compatibility.
( ( R' t
__module__t __doc__t __slots__RK R_ RS t is_instanceRR t is_propertyt is_attributet _is_internal_proxyRQ R# t extension_type( ( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyRo � s
t InspectionAttrInfoc B s e Z d Z e j d � � Z RS( s Adds the ``.info`` attribute to :class:`.InspectionAttr`.
The rationale for :class:`.InspectionAttr` vs. :class:`.InspectionAttrInfo`
is that the former is compatible as a mixin for classes that specify
``__slots__``; this is essentially an implementation artifact.
c C s i S( s� Info dictionary associated with the object, allowing user-defined
data to be associated with this :class:`.InspectionAttr`.
The dictionary is generated when first accessed. Alternatively,
it can be specified as a constructor argument to the
:func:`.column_property`, :func:`.relationship`, or :func:`.composite`
functions.
.. versionchanged:: 1.0.0 :attr:`.MapperProperty.info` is also
available on extension types via the
:attr:`.InspectionAttrInfo.info` attribute, so that it can apply
to a wider variety of ORM and extension constructs.
.. seealso::
:attr:`.QueryableAttribute.info`
:attr:`.SchemaItem.info`
( ( R+ ( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt info s ( R' Rp Rq R t memoized_propertyRy ( ( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyRx
s t _MappedAttributec B s e Z d Z d Z RS( sV Mixin for attributes which should be replaced by mapper-assigned
attributes.
( ( R' Rp Rq Rr ( ( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyR{ / s ( R R (N Rq t operatort R Ra R R t sqlR t symbolR R R R R R R R R
R R R R R R R R R R R R3 t DEFAULT_STATE_ATTRt
_INSTRUMENTORR R R R R! R" R# t frozensett
_never_setR4 t _none_sett _SET_DEFERRED_EXPIREDt _DEFER_FOR_STATER0 R6 t
attrgetterR8 t
instance_dictR: R7 R? RB RC RE RD t _inspectst objectRF RN RP RT RY R\ R^ Rd t dottedgettert
_state_mapperRl RK Rj t TrueRn Ro Rx R{ ( ( ( sF /opt/alt/python27/lib64/python2.7/site-packages/sqlalchemy/orm/base.pyt <module>
s�
I"
Mini Shell