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Maintains a separate collection of user-specified arguments and dialect-specified default arguments. c 0Ul0Ulgrxr1 _defaultsr[s r]r_DialectArgDict.__init__s-/)+r`cp[[UR5RUR55$rx)r0rr1unionrJr[s r]r7_DialectArgDict.__len__s'3t))*00@AAr`cp[[UR5RUR55$rx)iterrr1rMrJr[s r]r>_DialectArgDict.__iter__s'C**+11$..ABBr`c\XR;aURU$URU$rxrIrs r]r$_DialectArgDict.__getitem__s. $$ $%%c* *>>#& &r`c X RU'grxr1r\rr(s r]r)_DialectArgDict.__setitem__s"'3r`cURU grxrUrs r]r,_DialectArgDict.__delitem__s   s #r`)rJr1NrrD)rz Iterator[str]rArBrC) rbrcrdrerrr7r>r$r)r,rgrar`r]rGrGs',BC' ($r`rGzsqlalchemy.dialectsc[RRRR U5nUR cg[ UR 5$rx)r+ preloadeddialectsregistryloadconstruct_argumentsdict)r; dialect_clss r]_kw_reg_for_dialectrbsB..))2277 EK&&.  // 00r`c,\rSrSr%SrSrS\R4/rS\ S'SSS.SS jjr \ SS j5r \ SS j5r\ SS j5r\R""\5rS \ S'\ SSj5r\R*SSj5rSSjrSrg)r@ia!Establish the ability for a class to have dialect-specific arguments with defaults and constructor validation. The :class:`.DialectKWArgs` interacts with the :attr:`.DefaultDialect.construct_arguments` present on a dialect. .. seealso:: :attr:`.DefaultDialect.construct_arguments` rar!zList[Tuple[str, Any]]"_dialect_kwargs_traverse_internalsN)else_deprecated_fallbackc [RURnUcU$X%RUR05;GaUbURU:XaUR URU$URUR ;aCUUR URR ;aUR URU$X@R ;a]UUR UR ;a@[SUSUSURSURSUS3 SS9 UR UU$UR URU$U$)aReturn the value of a dialect-specific option, or *else_* if this dialect does not register the given argument. This is useful for DDL compilers that may be inherited by third-party dialects whose ``construct_arguments`` do not include the same set of keys as the parent dialect. :param dialect: The dialect for which to retrieve the option. :param argument_name: The name of the argument to retrieve. :param else\_: The value to return if the argument is not present. :param deprecated_fallback: Optional dialect name to fall back to if the argument is not present for the current dialect. 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NzRDialect '%s' does have keyword-argument validation and defaults enabled configured)r@rir*r')r{r;rjr|construct_arg_dictionarys r] argument_forDialectKWArgs.argument_for0s_R  & &| 4 ! $ +##=?KL   .,. $ )7>%m4r`c[U5$)aLA collection of keyword arguments specified as dialect-specific options to this construct. The arguments are present here in their original ``_`` format. Only arguments that were actually passed are included; unlike the :attr:`.DialectKWArgs.dialect_options` collection, which contains all options known by this dialect including defaults. The collection is also writable; keys are accepted of the form ``_`` where the value will be assembled into the list of options. .. seealso:: :attr:`.DialectKWArgs.dialect_options` - nested dictionary form )rr[s r]dialect_kwargsDialectKWArgs.dialect_kwargsds&t$$r`cUR$)z4A synonym for :attr:`.DialectKWArgs.dialect_kwargs`.)rrr[s r]rDialectKWArgs.kwargsys"""r`z0util.PopulateDict[str, Optional[Dict[Any, Any]]]ric[RUn[5nUcURR SS05 U$[ UR 5H'nX;dM URR X 5 M) U$)N*)r@rirGrJupdatereversed__mro__)r{r;rnds r]_kw_reg_for_dialect_cls%DialectKWArgs._kw_reg_for_dialect_clssv#0#=#=l#K   # + KK  T{ +   ,2KK&&'?'DE-r`cB[R"UR5$)aA collection of keyword arguments specified as dialect-specific options to this construct. This is a two-level nested registry, keyed to ```` and ````. For example, the ``postgresql_where`` argument would be locatable as:: arg = my_object.dialect_options["postgresql"]["where"] .. versionadded:: 0.9.2 .. seealso:: :attr:`.DialectKWArgs.dialect_kwargs` - flat dictionary form )r+ PopulateDictr|r[s r]r!DialectKWArgs.dialect_optionss&  !=!=>>r`c BU(dgUHn[R"SU5nU(d[SU-5eURSS5upEURUnSU;a1XV;a,[ R "SU<SU<SUR<35eXXe'M g![ Raj [R"S U<S U<35 [5=URU'nURRSS05 XURU'GMf=f) Nz ^(.+?)_(.+)$zGAdditional arguments should be named _, got '%s'rr(rwz Argument z is not accepted by dialect z on behalf of zCan't validate argument z,; can't locate any SQLAlchemy dialect named )rematch TypeErrorgroupr!r*r'rr"r+warnrGrJrxr1)r\rkmr;arg_namernr{s r]_validate_dialect_kwargs&DialectKWArgs._validate_dialect_kwargss! A+A?ABC&'WWQ] "L C+/+?+? +M(77 @++lDNN< :@,6?(( 6 ,( :I9JJ$$\2Q ""C;/,2I) 6sB  A9DD) rrRrjrrerrf Optional[str]rr)r;rrjrr|rrr)rr)r;rrrG)rz'util.PopulateDict[str, _DialectArgDict])rDict[str, Any]rr)rbrcrdrerrr'dp_dialect_optionsrdrrkrropropertyrrrr+rrbrir|memoized_propertyr!rrgrar`r]r@r@s# I -@@AA&(=-1 GGG  G + G GR1?1?/21?=@1? 1?1?f%%(## -.B   ??(%Cr`r@c\rSrSr%SrSr0rS\S'S\S'\SSj5r S r \SS j5r \SS j5r \SS j5r S rg) CompileStateiaProduces additional object state necessary for a statement to be compiled. the :class:`.CompileState` class is at the base of classes that assemble state for a particular statement object that is then used by the compiler. This process is essentially an extension of the process that the SQLCompiler.visit_XYZ() method takes, however there is an emphasis on converting raw user intent into more organized structures rather than producing string output. The top-level :class:`.CompileState` for the statement being executed is also accessible when the execution context works with invoking the statement and collecting results. The production of :class:`.CompileState` is specific to the compiler, such as within the :meth:`.SQLCompiler.visit_insert`, :meth:`.SQLCompiler.visit_select` etc. methods. These methods are also responsible for associating the :class:`.CompileState` with the :class:`.SQLCompiler` itself, if the statement is the "toplevel" statement, i.e. the outermost SQL statement that's actually being executed. There can be other :class:`.CompileState` objects that are not the toplevel, such as when a SELECT subquery or CTE-nested INSERT/UPDATE/DELETE is generated. .. versionadded:: 1.4 ) statement_ambiguous_table_name_mapz)Dict[Tuple[str, str], Type[CompileState]]pluginsz Optional[_AmbiguousTableNameMap]rc ^UR(abURRSS5nURRXAR4S5nUcURSUR4nOURSUR4nXPLa U"X40UD6$UR"X40UD6$Ncompile_state_pluginr|)_propagate_attrsrr_effective_plugin_targetcreate_for_statement)r{rcompilerr plugin_nameklasss r]r!CompileState.create_for_statements  % %#4488& KKKOO@@A4E}  B BC KKI>>?E <y1b1 1--iHRH Hr`c Xlgrxr)r\rrrs r]rCompileState.__init__ s"r`cURRSS5nU(a+X!R4nX0R;aURU$URSUR4$![a gf=fr)rrrrr)r{rrrs r]get_plugin_classCompileState.get_plugin_class s| 0044 "D   B BCCkk!{{3''  ;; 9+M+MNO O  sA++ A87A8cXURX!R4$![a gf=frx)rrr)r{rrs r]_get_plugin_class_for_plugin)CompileState._get_plugin_class_for_plugin"s8 ;;@@A   s  ))c^^^UUU4SjnU$)Nc*>UTRTT4'U$rx)r)cls_to_decorater{r visit_names r]decorate)CompileState.plugin_for..decorate1s5DCKKj1 2" "r`ra)r{rrrs``` r] plugin_forCompileState.plugin_for-s #r`rN)r Executablerr;rrrr)rrrOptional[Type[CompileState]])rrrrrr)rrrrrCallable[[_Fn], _Fn])rbrcrdrerrrrrrrrrrrgrar`r]rrs4;I9;G 6;??I"I.9IADI II6#" %*"14 %+. r`rc"\rSrSrSrSSjrSrg) Generativei8zQProvide a method-chaining pattern in conjunction with the @_generative decorator.cFURnURnURU5nU(aKURR 5R 5VVs0sHupEXA;dM XE_M snnUlU$URR 5UlU$s snnfrx)_memoized_keysrr__dict__copyitems)r\skipr{srvs r]rGenerative._generate<s""nn KK  "&!3!3!5!;!;!=!=!=AJ ++-AJ s  B+BraNr)rbrcrdrerrrgrar`r]rr8s  r`rc&\rSrSrSrSrSSjrSrg)InPlaceGenerativeiJzgProvide a method-chaining pattern in conjunction with the @_generative decorator that mutates in place.rachURnUHnURRUS5 M! U$rx)rrr)r\rrs r]rInPlaceGenerative._generatePs0""A MM  a & r`Nr)rbrcrdrerrrrgrar`r]rrJs5Ir`rcb\rSrSr%SrSrS\S'\Rr S\S'\ Rr Sr g) HasCompileStateiXz=A class that has a :class:`.CompileState` associated with it.Nr_compile_state_pluginutil.immutabledict[str, Any] _attributesra)rbrcrdrerrrr+ EMPTY_DICTrrr_compile_state_factoryrgrar`r]rrXs,G:>7>04K-?)>>r`rc\\rSrSr%SrS\S'Sr\(aS SjrS Sjr S Sjr S r g S r g ) _MetaOptionsibzmetaclass for the Options class. This metaclass is actually necessary despite the availability of the ``__init_subclass__()`` hook as this type also provides custom class-level behavior for the ``__add__()`` method. Tuple[str, ...] _cache_attrscU"5n[U5RUR5(a5[SU<S[U5RUR5<35eURR U5 U$NzURn[[SU555Ul[TU]5 g)Nc3f# UH'nURS5(aMUS;dM#Uv M) g7f)__)_cache_key_traversalN) startswith)r2r{s r]r3,Options.__init_subclass__..s5A||D)66s 11 1)rtuplesortedrsuper__init_subclass__)r{dict_rs r]rOptions.__init_subclass__s;     !#r`c :URRU5 grx)rrxrs r]rOptions.__init__s R r`cURRUR5nURRUR5 [ U5R UR 5(a5[SU<S[ U5R UR 5<35eURRU5 U$r)rrrrxrrrrrs r]rOptions.__add__s ^^ # #DNN 3 4==) u: !2!2 3 3U..t/@/@AC  5! r`c[URUR5Hup#[X5[X5:wdM g gNFT)rrgetattr)r\rr r s r]__eq__Options.__eq__s>  1 153E3EFDAt75#44Gr`c^TRR<SSRU4SjTR55<S3$)N(, c3t># UH-nUTR;dMU<STRU<3v M/ g7f)=Nr)r2rr\s r]r3#Options.__repr__..s4*A %01dmmA./*s88))rrbjoinrr[s`r]r^Options.__repr__s; NN # # II**   r`c[X5$rx) issubclass)r{rs r] isinstanceOptions.isinstances #%%r`c&X[X5U-0-$rx)r)r\rZr(s r]add_to_elementOptions.add_to_elementsWT058999r`cUR$rxrr[s r]_state_dict_instOptions._state_dict_insts }}r`r_state_dict_constcUR$rx)r )r{s r] _state_dictOptions._state_dicts$$$r`c TUR5nXRLaUR(av[UR5R UR5(aC[ SU<SU<S[UR5R UR5<35eX-$)Nzother element z is not empty, is not of type z+, and contains attributes not covered here )rrrrrr)r{rr{s r] safe_mergeOptions.safe_merges      &""E&&'2233C3CDD**+66s7G7GH  wr`c8UR[U5RU55nURX5nU(aW0nUH"nSU-n X;aX8Xy'MX;dMXHXy'M$ Xg-n [R "U5R X05nX4$Xc4$)aprocess Options argument in terms of execution options. e.g.:: ( load_options, execution_options, ) = QueryContext.default_load_options.from_execution_options( "_sa_orm_load_options", {"populate_existing", "autoflush", "yield_per"}, execution_options, statement._execution_options, ) get back the Options and refresh "_sa_orm_load_options" in the exec options dict w/ the Options as well r)rrrMrr+ immutabledict merge_with) r{rattrs exec_optionsstatement_exec_optionscheck_argnamesexisting_optionsresultargnamelocal new_optionss r]from_execution_optionsOptions.from_execution_optionss<++   # #$: ; (++C5 F)g *$0$9FM6$:$CFM *+3K--l;FF"L, ,$1 1r`cgrxrars r]rOptions.__getattr__rr`cgrxrarVs r]rOptions.__setattr__ rr`cgrxrars r]rOptions.__delattr__"rr`r)rrrrrr)rz Type[Any]rr)rZrr(rrr)rMapping[str, Any])rz 'Options'rr) rrrzset[str]rr(rr(rz#Tuple['Options', Mapping[str, Any]]rArBrC)rbrcrdrerrrrrrrr^rrr-rr r+rr  classlevelrrrrrrrrg __classcell__)rs@r]rrs6I!! $!   &&::7;oo3E  %!%032 3232( 32 !2 32 - 3232j3@44 r`r) metaclassc\rSrSrSr\SSj5r\RSSj5r\S Sj5r Sr g) CacheableOptionsi%rac0[R"XU5$rx)r!_gen_cache_key)r\rH bindparamss r]_gen_cache_key_inst$CacheableOptions._gen_cache_key_inst(s))$*EEr`c US4$rra)r{rHr0s r]r/CacheableOptions._gen_cache_key.sRyr`c.[R"U5$rx)r!_generate_cache_key_for_objectr[s r]_generate_cache_key$CacheableOptions._generate_cache_key4s99$??r`N)rHrr0List[BindParameter[Any]]rzOptional[Tuple[Any]])rHz 'anon_map'r0r9rzTuple[CacheableOptions, Any])rzOptional[CacheKey]) rbrcrdrerr-r1r)r/r7rgrar`r]r-r-%s~IFF)AF FF ##!/G %$ @@r`r-cl\rSrSr%Sr\R rS\S'Sr S\S'Sr S \S 'S r S \S 'S r Sr g)ExecutableOptioni9rarM _annotationsexecutable_optionr__visit_name__Fr_is_has_cache_keyT_is_corec URRUR5n[UR5UlU$)z/Create a shallow copy of this ExecutableOption.)rrr`r)r\rrs r]rExecutableOption._cloneDs/ NN " "4>> 2$--( r`N)rbrcrdrerr+rr<rr>r?r@rrgrar`r]r;r;9s:I-1__L*<-NC-#t#Hdr`r;c\rSrSr%SrSrS\S'\Rr S\S'Sr S\S 'S r S \S 'S r S \S'S\S'S \ R4S\R 4S\R"4/rSrS\S'SrS\S'SrS\S'SrS\S'SrS\S'SrS\S'SrS\S'\(a6S\S'SSS.S-SjjrS.SjrS/Sjr\R<S0S j5r\ S1S!j5r!\"S2S"j5r#\"S3S#j5r$\"S4S$j5r%\"S5S%j5r&\'S&S&S&SSS&S&S&S&SSS&S&S&S&S&SS'.S6S(jj5r(\'S7S)j5r(\"S8S*j5r(S9S+jr)S,r*g):riKzMark a :class:`_expression.ClauseElement` as supporting execution. :class:`.Executable` is a superclass for all "statement" types of objects, including :func:`select`, :func:`delete`, :func:`update`, :func:`insert`, :func:`text`. Trsupports_executionrM_execution_optionsF_is_default_generatorrazTuple[ExecutableOption, ...] _with_optionsz6Tuple[Tuple[Callable[[CompileState], None], Any], ...]_with_context_optionsz9Optional[Union[Type[CacheableOptions], CacheableOptions]]_compile_optionsr is_selectis_from_statement is_update is_insertis_text is_deleteis_dmlrr>N)for_executemanyschema_translate_mapc grxra)r\rcompiled_cache column_keysrQrRrs r]_compile_w_cacheExecutable._compile_w_cacheqs r`cgrxrar\ connectiondistilled_paramsexecution_optionss r]_execute_on_connection!Executable._execute_on_connection~s !$r`cgrxrarYs r]_execute_on_scalarExecutable._execute_on_scalars r`c[5erxrr[s r]_all_selected_columns Executable._all_selected_columnsrr`cUR$rx)r>r[s r]r#Executable._effective_plugin_targets"""r`cPU=R[SU55- slU$)aApply options to this statement. In the general sense, options are any kind of Python object that can be interpreted by the SQL compiler for the statement. These options can be consumed by specific dialects or specific kinds of compilers. The most commonly known kind of option are the ORM level options that apply "eager load" and other loading behaviors to an ORM query. However, options can theoretically be used for many other purposes. For background on specific kinds of options for specific kinds of statements, refer to the documentation for those option objects. .. versionchanged:: 1.4 - added :meth:`.Executable.options` to Core statement objects towards the goal of allowing unified Core / ORM querying capabilities. .. seealso:: :ref:`loading_columns` - refers to options specific to the usage of ORM queries :ref:`relationship_loader_options` - refers to options specific to the usage of ORM queries c3l# UH*n[R"[RU5v M, g7frx)r4expectrExecutableOptionRole)r2r#s r]r3%Executable.options..s-$    U77 = =s24)rGrr\optionss r]rmExecutable.optionss0< e$ $    r`cXlU$)zlAssign the compile options to a new value. :param compile_options: appropriate CacheableOptions structure rI)r\compile_optionss r]_set_compile_optionsExecutable._set_compile_optionss!0 r`cNURceU=RU- slU$)z*update the _compile_options with new keys.rprls r]_update_compile_options"Executable._update_compile_optionss,$$000 ( r`c4U=RX44- slU$)aAdd a context option to this statement. These are callable functions that will be given the CompileState object upon compilation. A second argument cache_args is required, which will be combined with the ``__code__`` identity of the function itself in order to produce a cache key. )rH)r\ callable_ cache_argss r]_add_context_optionExecutable._add_context_options "" '>&@@" r`.)rT logging_tokenisolation_level no_parametersstream_resultsmax_row_buffer yield_perinsertmanyvalues_page_sizerRpopulate_existing autoflushsynchronize_session dml_strategy render_nullsis_delete_usingis_update_frompreserve_rowcountc grxra)r\rTr|r}r~rrrrrRrrrrrrrrr#s r]r\Executable.execution_optionss,r`c grxra)r\r#s r]r\rs58r`c SU;a[R"S5eSU;a[R"S5eURRU5UlU$)a.Set non-SQL options for the statement which take effect during execution. Execution options can be set at many scopes, including per-statement, per-connection, or per execution, using methods such as :meth:`_engine.Connection.execution_options` and parameters which accept a dictionary of options such as :paramref:`_engine.Connection.execute.execution_options` and :paramref:`_orm.Session.execute.execution_options`. The primary characteristic of an execution option, as opposed to other kinds of options such as ORM loader options, is that **execution options never affect the compiled SQL of a query, only things that affect how the SQL statement itself is invoked or how results are fetched**. That is, execution options are not part of what's accommodated by SQL compilation nor are they considered part of the cached state of a statement. The :meth:`_sql.Executable.execution_options` method is :term:`generative`, as is the case for the method as applied to the :class:`_engine.Engine` and :class:`_orm.Query` objects, which means when the method is called, a copy of the object is returned, which applies the given parameters to that new copy, but leaves the original unchanged:: statement = select(table.c.x, table.c.y) new_statement = statement.execution_options(my_option=True) An exception to this behavior is the :class:`_engine.Connection` object, where the :meth:`_engine.Connection.execution_options` method is explicitly **not** generative. The kinds of options that may be passed to :meth:`_sql.Executable.execution_options` and other related methods and parameter dictionaries include parameters that are explicitly consumed by SQLAlchemy Core or ORM, as well as arbitrary keyword arguments not defined by SQLAlchemy, which means the methods and/or parameter dictionaries may be used for user-defined parameters that interact with custom code, which may access the parameters using methods such as :meth:`_sql.Executable.get_execution_options` and :meth:`_engine.Connection.get_execution_options`, or within selected event hooks using a dedicated ``execution_options`` event parameter such as :paramref:`_events.ConnectionEvents.before_execute.execution_options` or :attr:`_orm.ORMExecuteState.execution_options`, e.g.:: from sqlalchemy import event @event.listens_for(some_engine, "before_execute") def _process_opt(conn, statement, multiparams, params, execution_options): "run a SQL function before invoking a statement" if execution_options.get("do_special_thing", False): conn.exec_driver_sql("run_special_function()") Within the scope of options that are explicitly recognized by SQLAlchemy, most apply to specific classes of objects and not others. The most common execution options include: * :paramref:`_engine.Connection.execution_options.isolation_level` - sets the isolation level for a connection or a class of connections via an :class:`_engine.Engine`. This option is accepted only by :class:`_engine.Connection` or :class:`_engine.Engine`. * :paramref:`_engine.Connection.execution_options.stream_results` - indicates results should be fetched using a server side cursor; this option is accepted by :class:`_engine.Connection`, by the :paramref:`_engine.Connection.execute.execution_options` parameter on :meth:`_engine.Connection.execute`, and additionally by :meth:`_sql.Executable.execution_options` on a SQL statement object, as well as by ORM constructs like :meth:`_orm.Session.execute`. * :paramref:`_engine.Connection.execution_options.compiled_cache` - indicates a dictionary that will serve as the :ref:`SQL compilation cache ` for a :class:`_engine.Connection` or :class:`_engine.Engine`, as well as for ORM methods like :meth:`_orm.Session.execute`. Can be passed as ``None`` to disable caching for statements. This option is not accepted by :meth:`_sql.Executable.execution_options` as it is inadvisable to carry along a compilation cache within a statement object. * :paramref:`_engine.Connection.execution_options.schema_translate_map` - a mapping of schema names used by the :ref:`Schema Translate Map ` feature, accepted by :class:`_engine.Connection`, :class:`_engine.Engine`, :class:`_sql.Executable`, as well as by ORM constructs like :meth:`_orm.Session.execute`. .. seealso:: :meth:`_engine.Connection.execution_options` :paramref:`_engine.Connection.execute.execution_options` :paramref:`_orm.Session.execute.execution_options` :ref:`orm_queryguide_execution_options` - documentation on all ORM-specific execution options r}z'isolation_level' execution option may only be specified on Connection.execution_options(), or per-engine using the isolation_level argument to create_engine().rTzm'compiled_cache' execution option may only be specified on Connection.execution_options(), not per statement.)r*r'rErMrs r]r\rshP  "##/  r !##H #'"9"9"?"?"C r`cUR$)zGet the non-SQL options which will take effect during execution. .. versionadded:: 1.3 .. seealso:: :meth:`.Executable.execution_options` )rEr[s r]get_execution_options Executable.get_execution_optionsps&&&r`)rIrE)rrRrTOptional[CompiledCacheType]rUz List[str]rQrrR Optional[SchemaTranslateMapType]rrrzCTuple[Compiled, Optional[Sequence[BindParameter[Any]]], CacheStats])rZrIr[rKr\rQrzCursorResult[Any])rZrIr[rKr\rQrr)rrFr')rmr;rr2)rqr-rr2)rmr-rr2)rxzCallable[[CompileState], None]ryrrr2)&rTrr|rr}rSr~rrrrrErrErrErRrrrrrrr8rr7rrrrrrrrr#rrr2)r#rrr2)rrrr2)rrL)+rbrcrdrerrDrr+rrErFrGrHr'dp_executable_optionsr%dp_with_context_optionsdp_propagate_attrs_executable_traverse_internalsrJrKrLrMrNrOrPrrVr]r`rrcrrrrmrrrurzrr\rrgrar`r]rrKsX $#37??0B"'4'24M/4  PO +AAB # % = =  6IIJ &"It#t#ItItGTItFD%*EI  8  #  " #C     $" $6 $ ;  $   $ " 6  ;      ""$#$##!!F1  $7: *-#$!*-AD"':=,/ #""''4  (   %(? 8* !"#$%& '()* +.88ttl 'r`rcD\rSrSr%SrS\S'S SjrS SjrSrg) SchemaEventTargeti|zBase class for elements that are the targets of :class:`.DDLEvents` events. This includes :class:`.SchemaItem` as well as :class:`.SchemaType`. zdispatcher[SchemaEventTarget]dispatchc g)z0Associate with this SchemaEvent's parent object.Nrar\parentrs r] _set_parentSchemaEventTarget._set_parentsr`c URRX5 UR"U40UD6 URRX5 grx)rbefore_parent_attachrafter_parent_attachrs r]_set_parent_with_dispatch+SchemaEventTarget._set_parent_with_dispatchs; **48 &2& ))$7r`raN)rrrrrr) rbrcrdrerrrrrgrar`r]rr|s1,+?8'8/28 8r`rc\rSrSrSrSrg)SchemaVisitableizbBase class for elements that are targets of a :class:`.SchemaVisitor`. .. versionadded:: 2.0.41 raN)rbrcrdrerrgrar`r]rrsr`rc,\rSrSr%SrSS0rS\S'Srg) SchemaVisitorizXDefine the visiting for ``SchemaItem`` and more generally ``SchemaVisitable`` objects. schema_visitorTr__traverse_options__raN)rbrcrdrerrrrgrar`r]rrs -=d+C.Cr`rc0\rSrSrSrSrSrSrSrSr Sr S r g ) _SentinelDefaultCharacterizationinoneunknown clientsidesentinel_default serversideidentitysequenceraN) rbrcrdreNONEUNKNOWN CLIENTSIDESENTINEL_DEFAULT SERVERSIDEIDENTITYSEQUENCErgrar`r]rrs& DGJ)JHHr`rcb\rSrSr%SrS\S'SrS\S'SrS\S'\Rr S \S 'S r g) _SentinelColumnCharacterizationiNzOptional[Sequence[Column[Any]]]columnsFr is_explicit is_autoincrdefault_characterizationra) rbrcrdrerrrrrrrrgrar`r]rrs7/3G ,3KJ(-->r`r_COLKEY_COL_coColumnElement[Any]T)rn covariant_COLc`\rSrSr%SrS\S'S SjrS SjrS SjrS Sjr Sr g )_ColumnMetricsi)columnrrcX lURnU(a'URHnX4RU5 M ggrx)r _proxy_index_expanded_proxy_setadd)r\ collectioncolpieps_cols r]r_ColumnMetrics.__init__s<  $ $ 22 %3 r`c.URR$rx)rrr[s r]get_expanded_proxy_set%_ColumnMetrics.get_expanded_proxy_sets{{...r`cURnU(dgURRH=nURUS5nU(aUR U5 UcM2U(aM;X# M? grx)rrrrdiscard)r\rrrcolsets r]dispose_ColumnMetrics.disposesU  $ $ ;;22CVVC&Ft$!&&G 3r`cURRnURU5H%nUR[ U/55(aM% g gr)rrrrr)r\ target_setexpanded_proxy_setts r]embedded_ColumnMetrics.embeddedsJ "[[<<&&'9:A%22>1#3FGG;r`N)rzColumnCollection[Any, _COL_co]rrrrr)r"ColumnCollection[_COLKEY, _COL_co]rr)rz=Union[Set[ColumnElement[Any]], FrozenSet[ColumnElement[Any]]]rr) rbrcrdrerrrrrrrgrar`r]rrsLI O &8 &?F &  &/      r`rc\rSrSr%SrSrS\S'S\S'S\S 'S \S 'S5S6S jjr\R"S5S7Sj5r S8Sjr \ S9Sj5r S:SjrS9SjrS;SjrSSjr\S?Sj5r\S@Sj5r\SASj5rSBSjrSCSjrSDSjrSESjrSFSjr\S5SGS jj5r\SHS!j5rS5SIS"jjrSJS#jrSKS$jrSLS%jrSMS&jrSNS'jrSOS(jr SPS)jr!S r"S*\S+'S8S,jr#S5SQS-jjr$SRS.jr%SSS/jr&STS0jr'SUS1jr(SVS2jr)SWSXS3jjr*S4r+g )YColumnCollectioniaoCollection of :class:`_expression.ColumnElement` instances, typically for :class:`_sql.FromClause` objects. The :class:`_sql.ColumnCollection` object is most commonly available as the :attr:`_schema.Table.c` or :attr:`_schema.Table.columns` collection on the :class:`_schema.Table` object, introduced at :ref:`metadata_tables_and_columns`. The :class:`_expression.ColumnCollection` has both mapping- and sequence- like behaviors. A :class:`_expression.ColumnCollection` usually stores :class:`_schema.Column` objects, which are then accessible both via mapping style access as well as attribute access style. To access :class:`_schema.Column` objects using ordinary attribute-style access, specify the name like any other object attribute, such as below a column named ``employee_name`` is accessed:: >>> employee_table.c.employee_name To access columns that have names with special characters or spaces, index-style access is used, such as below which illustrates a column named ``employee ' payment`` is accessed:: >>> employee_table.c["employee ' payment"] As the :class:`_sql.ColumnCollection` object provides a Python dictionary interface, common dictionary method names like :meth:`_sql.ColumnCollection.keys`, :meth:`_sql.ColumnCollection.values`, and :meth:`_sql.ColumnCollection.items` are available, which means that database columns that are keyed under these names also need to use indexed access:: >>> employee_table.c["values"] The name for which a :class:`_schema.Column` would be present is normally that of the :paramref:`_schema.Column.key` parameter. In some contexts, such as a :class:`_sql.Select` object that uses a label style set using the :meth:`_sql.Select.set_label_style` method, a column of a certain key may instead be represented under a particular label name such as ``tablename_columnname``:: >>> from sqlalchemy import select, column, table >>> from sqlalchemy import LABEL_STYLE_TABLENAME_PLUS_COL >>> t = table("t", column("c")) >>> stmt = select(t).set_label_style(LABEL_STYLE_TABLENAME_PLUS_COL) >>> subq = stmt.subquery() >>> subq.c.t_c :class:`.ColumnCollection` also indexes the columns in order and allows them to be accessible by their integer position:: >>> cc[0] Column('x', Integer(), table=None) >>> cc[1] Column('y', Integer(), table=None) .. versionadded:: 1.4 :class:`_expression.ColumnCollection` allows integer-based index access to the collection. Iterating the collection yields the column expressions in order:: >>> list(cc) [Column('x', Integer(), table=None), Column('y', Integer(), table=None)] The base :class:`_expression.ColumnCollection` object can store duplicates, which can mean either two columns with the same key, in which case the column returned by key access is **arbitrary**:: >>> x1, x2 = Column("x", Integer), Column("x", Integer) >>> cc = ColumnCollection(columns=[(x1.name, x1), (x2.name, x2)]) >>> list(cc) [Column('x', Integer(), table=None), Column('x', Integer(), table=None)] >>> cc["x"] is x1 False >>> cc["x"] is x2 True Or it can also mean the same column multiple times. These cases are supported as :class:`_expression.ColumnCollection` is used to represent the columns in a SELECT statement which may include duplicates. A special subclass :class:`.DedupeColumnCollection` exists which instead maintains SQLAlchemy's older behavior of not allowing duplicates; this collection is used for schema level objects like :class:`_schema.Table` and :class:`.PrimaryKeyConstraint` where this deduping is helpful. The :class:`.DedupeColumnCollection` class also has additional mutation methods as the schema constructs have more use cases that require removal and replacement of columns. .. versionchanged:: 1.4 :class:`_expression.ColumnCollection` now stores duplicate column keys as well as the same column in multiple positions. The :class:`.DedupeColumnCollection` class is added to maintain the former behavior in those cases where deduplication as well as additional replace/remove operations are needed. ) _collection_index_colsetrz6List[Tuple[_COLKEY, _COL_co, _ColumnMetrics[_COL_co]]]rz4Dict[Union[None, str, int], Tuple[_COLKEY, _COL_co]]rz6Dict[ColumnElement[Any], Set[_ColumnMetrics[_COL_co]]]rz Set[_COL_co]rNcB[RUS[55 [RUS05 [RUS[R"[ R 55 [RUS/5 U(aURU5 gg)Nrrrr)rrr collections defaultdictr+ OrderedSet_initial_populate)r\rs r]rColumnCollection.__init__[sx 4CE242. .+"9"9$//"J  43   " "7 + r`zsqlalchemy.sql.elementsc[RRnUR"UR[ R SS.6$)NF)_literal_as_text_roler)r+r[ sql_elementsr= _all_columnsrColumnsClauseRoler\r5s r]__clause_element__#ColumnCollection.__clause_element__gs=>>..""  #("9"9  r`c&URU5 grx_populate_separate_keysr\iter_s r]r"ColumnCollection._initial_populateqs $$U+r`cPURVVs/sHupoPM snn$s snnfrxrr\rrs r]rColumnCollection._all_columnsvs&'+'7'78'7 '7888"cRURVVs/sHun o!PM snn$s snnf)zIReturn a sequence of string key names for all columns in this collection.r)r\rrs r]keysColumnCollection.keyszs*$(#3#34#3iq!Q#3444s#cPURVVs/sHupoPM snn$s snnf)zvReturn a sequence of :class:`_sql.ColumnClause` or :class:`_schema.Column` objects for all columns in this collection.rrs r]r6ColumnCollection.valuess((,'7'78'7 '7888rcZURVVVs/sH upo1U4PM snnn$s snnnf)zReturn a sequence of (key, column) tuples for all columns in this collection each consisting of a string key name and a :class:`_sql.ColumnClause` or :class:`_schema.Column` object. r)r\rrrs r]rColumnCollection.itemss*-1,<,<=,<[aaC,<===s&c,[UR5$rx)rrr[s r]__bool__ColumnCollection.__bool__sD$$%%r`c,[UR5$rx)r0rr[s r]r7ColumnCollection.__len__s4##$$r`c b[URVVs/sHupoPM snn5$s snnfrx)rPrrs r]r>ColumnCollection.__iter__s+$*:*:;*:YQQS*:;<<;s+ cgrxrars r]r$ColumnCollection.__getitem__s.s1F-W1!1Fsc3B># UHnTRUv M g7frxr)r2rr\s r]r3rsDWDKK0srr) rrslicerr as_readonlyrrrrE IndexError)r\rcolsrs` r]r$rs #u~..c5))151A1A#1FD EDD'-99;;{{3'** #((1+s++ !-36  sA+B/B C  .s+dc!ffdsr)rrbrr[s r]__str__ColumnCollection.__str__s+ NN # # II+d+ +  r`c[5erxrrVs r]r)ColumnCollection.__setitem__ !##r`c[5erxrrs r]r,ColumnCollection.__delitem__r5r`c[5erxr)r\rrs r]rColumnCollection.__setattr__r5r`c[5e)zIDictionary clear() is not implemented for :class:`_sql.ColumnCollection`.rr[s r]clearColumnCollection.clear "##r`c[5erxr)r\rs r]removeColumnCollection.remover5r`c[5e)zJDictionary update() is not implemented for :class:`_sql.ColumnCollection`.rrs r]rxColumnCollection.updater=r`z Optional[int]__hash__c UVVs/sHup#X#[X54PM snn=URSS&nURRSU55 URR[ U5VVVVs0sH unup#oeX#4_M snnnn5 URR[ U5VVVs0sH up'obX'4_M snnn5 gs snnfs snnnnfs snnnf)*populate from an iterator of (key, column)Nc3F# UHupoR5v M g7frx _deannotate)r2rrs r]r3;ColumnCollection._populate_separate_keys..sF:aMMOO:!)rrrrxr enumeratery)r\rrrridxrrs r]r(ColumnCollection._populate_separate_keys s 9>, 8=Q>$* +,  j F:FF /8/D E/D^S)11&[/D E  *9MN9MIAAxK9MNO, FNsC9C:C" cpUc URnOUn[UR5n[[U5nURR X5[ X545 URRUR55 X54URU'X0R;aX54URU'gg)aAdd a column to this :class:`_sql.ColumnCollection`. .. note:: This method is **not normally used by user-facing code**, as the :class:`_sql.ColumnCollection` is usually part of an existing object such as a :class:`_schema.Table`. To add a :class:`_schema.Column` to an existing :class:`_schema.Table` object, use the :meth:`_schema.Table.append_column` method. N) rr0rr rappendrrrrHr)r\rrcolkeyr#_columns r]rColumnCollection.adds ;ZZFF   ! w'  nT; <  ,,./ * A  $#)"3DKK  %r`ctURVVVs/sH upo1U4PM snnnURS.$s snnnf)NrrrT)r\rrrs r] __getstate__ColumnCollection.__getstate__;s6262B2BC2BwqQF2BCkk  Cs3c[RUSUS5 [RUS[R"[R 55 [RUSUSVVs/sHup#X#[ X54PM snn5 [RUSURVVVs1sHup$oTiM snnn5 gs snnfs snnnf)Nrrrr)rrrrr+rrr)r\staterrrrs r] __setstate__ColumnCollection.__setstate__As45?; .+"9"9$//"J    $M2 2FQ~d./2    )43C3CD3Ciaac3CD   Es -C/C czXR;a,[U[5(a[R"S5egg)z3Checks if a column object exists in this collectionzZcontains_column cannot be used with string arguments. Use ``col_name in table.c`` instead.FT)rrrr*r'r\rs r]contains_column ColumnCollection.contains_columnRs9 ll "#s##'';r`c[U5$)zAReturn a "read only" form of this :class:`_sql.ColumnCollection`.)ReadOnlyColumnCollectionr[s r]rColumnCollection.as_readonly^s(--r`cURnU(agURH8u p#URRnUHnXR U5 M M: g)apopulate the "proxy index", if empty. proxy index is added in 2.0 to provide more efficient operation for the corresponding_column() method. For reasons of both time to construct new .c collections as well as memory conservation for large numbers of large .c collections, the proxy_index is only filled if corresponding_column() is called. once filled it stays that way, and new _ColumnMetrics objects created after that point will populate it with new data. Note this case would be unusual, if not nonexistent, as it means a .c collection is being mutated after corresponding_column() were used, however it is tested in test/base/test_utils.py. N)rrrrr)r\rrmetricsepsrs r]_init_proxy_index"ColumnCollection._init_proxy_indexdsP    !--MAq..44C (.r`c ^ XR;aU$Sup4URnURm T (dUR5 U 4SjU5GHtnU(aUR U5(dM#UcUnM*UR UR R5nUc%UR UR R5n[U5[U5:aUnUnMXs:XdM[UR R5Vs/sH7nURU5(dMURRSS5PM9 sn5n [UR R5Vs/sH7nURU5(dMURRSS5PM9 sn5n X:dGMpUnUnGMw U(a UR $S$s snfs snf)a*Given a :class:`_expression.ColumnElement`, return the exported :class:`_expression.ColumnElement` object from this :class:`_expression.ColumnCollection` which corresponds to that original :class:`_expression.ColumnElement` via a common ancestor column. :param column: the target :class:`_expression.ColumnElement` to be matched. :param require_embedded: only return corresponding columns for the given :class:`_expression.ColumnElement`, if the given :class:`_expression.ColumnElement` is actually present within a sub-element of this :class:`_expression.Selectable`. Normally the column will match if it merely shares a common ancestor with one of the exported columns of this :class:`_expression.Selectable`. .. seealso:: :meth:`_expression.Selectable.corresponding_column` - invokes this method against the collection returned by :attr:`_expression.Selectable.exported_columns`. .. versionchanged:: 1.4 the implementation for ``corresponding_column`` was moved onto the :class:`_expression.ColumnCollection` itself. )NNc3N># UHoT;dM TUHo"v M M g7frxra)r2tsmmrs r]r38ColumnCollection.corresponding_column..s& #2RxB"R&BB&Bs %%Nweightr)rrrrerrrrr0r5_uncached_proxy_listshares_lineager<r) r\rrequire_embeddedselected_intersectionselected_metricsrcurrent_metricscurrent_intersectionscselected_col_distancecurrent_col_distancers @r]corresponding_column%ColumnCollection.corresponding_column~sH \\ !M2</%%     " " $ # O$'?'? 'K'K#+'6$'1'>'>#**>>($)0,6,C,C(//CC-)+,s3H/II (7$,@))B-0!1 7 7 L L N!O!# "008 =BOO//!< N-),/!0 6 6 K K M!N!# "008 =BOO//!< M,(,C+:(0D-q t+;&&DD+sG - G 5G%  G% rarx)rz+Optional[Iterable[Tuple[_COLKEY, _COL_co]]])rr=)rz!Iterable[Tuple[_COLKEY, _COL_co]]rr)rz List[_COL_co])rz List[_COLKEY])rzList[Tuple[_COLKEY, _COL_co]])rrrD)rzIterator[_COL_co])rzUnion[str, int]rr)rzTuple[Union[str, int], ...]r*ReadOnlyColumnCollection[_COLKEY, _COL_co])rrrry)rz3Union[str, int, slice, Tuple[Union[str, int], ...]]rz:Union[ReadOnlyColumnCollection[_COLKEY, _COL_co], _COL_co])rrrr)rrrr)rrrr)rrrr)rrr|rrzOptional[_COL_co])rrr|rrzUnion[_COL_co, _COL])rrr|zOptional[_COL]rzOptional[Union[_COL_co, _COL]]r')rrr(rrr)rrrr)rrrrrr)rr)rrrr)rrrr)rrrzOptional[_COLKEY]rr)rrrXrrr)rrrr)rryr)F)rrrorrzOptional[Union[_COL, _COL_co]]),rbrcrdrerrrrr+preload_modulerrrrrr6rrr7r>rr$rr r%rrr1r)r,rr;r?rxrCrrrUrYr]rrerwrgrar`r]rrsjXEIGG @@HH FJ ,B , 23 4 ,6, , 995 9 >&%=?? 9.9 39999 399F C,/ #KK GG37  !/  '  $$$$ $$ #Hm" P6 P  PDH"4("4/@"4 "4H  " . )66;hEhE.2hE 'hEhEr`r _NAMEDCOLzNamedColumn[Any]c|\rSrSrSrS S SjjrS SjrSSjrSSjrSSjr S SS jjr S r g)DedupeColumnCollectioniaYA :class:`_expression.ColumnCollection` that maintains deduplicating behavior. This is useful by schema level objects such as :class:`_schema.Table` and :class:`.PrimaryKeyConstraint`. The collection includes more sophisticated mutator methods as well to suit schema objects which require mutable column collections. .. versionadded:: 1.4 NcrUb&URU:wa[R"S5eURnUc[R"S5eX R;aIURUSnX1LagUR U5 [ R RUS5 gURX!5 g)NKDedupeColumnCollection requires columns be under the same key as their .keyz-Can't add unnamed column to column collectionrr) rr*r'rreplacer+rreset_append_new_column)r\rrexistings r]rDedupeColumnCollection.adds ?vzzS0##- jj ;##?  ++ {{3'*H! LL  " " ( ( =  # #C 0r`c [UR5nURRX[X545 URR UR 55 X4URU'X4URU'grx)r0rrOrrrrHr)r\r named_columnr#s r]r)DedupeColumnCollection._append_new_columnsq   !  t B C  1134, A. Cr`c [U5n/nUHupEURU:wa[R"S5eURUR ;a-URUR:waUR U5 MrURUR ;aUR U5 MXE4UR U'URR XE[X545 M URRSUR55 UR RS[UR555 UHnURU5 M g)rErc3F# UHupo2R5v M g7frxrG)r2rrrs r]r3ADedupeColumnCollection._populate_separate_keys..4sN=M qMMOO=MrJc36# UHunup#oAX#44v M g7frxra)r2rLrrrs r]r3r6s  0Knc9A!1&M0KsN) listrr*r'rZrrOrrrrxrKr)r\rr replace_colrrs r]r.DedupeColumnCollection._populate_separate_keys sE{ FAww!|''1xx4;;&377chh+>""3'DKK'""3'"# A  ''1J(KL NT=M=MNN  09$:J:J0K  C LL r`c4URSU55 g)Nc3<# UHoRU4v M g7frx)r)r2rs r]r30DedupeColumnCollection.extend..=s$Euggs^usrrs r]extendDedupeColumnCollection.extend<s $$$Eu$EEr`c rXR;a[SU-5eURUR URR U5 UR VVVs/sHup#nX1LdM X#U4PM snnnUR SS&UR RUS5HnURU5 M URR[UR 5VVVVs0sH unup&ouX&4_M snnnn5 UR[UR 5 gs snnnfs snnnnf)Nz8Can't remove column %r; column is not in this collectionra) rrrrr?rrrrrxrKr0)r\rrrrcrLrrs r]r?DedupeColumnCollection.remove?s  %J  KK # F#$(#3#3 #3w Q7O#3  ((,,VR8G OOD !9 3,>?4:+<+<=4 0F0FG41H1HIr`cSUR0$Nrrr[s r]rU%ReadOnlyColumnCollection.__getstate__s4<<((r`c0USnURU5 gr)r)r\rXrs r]rY%ReadOnlyColumnCollection.__setstate__sy! fr`c$UR5 grx _readonly)r\rrs r]rReadOnlyColumnCollection.add  r`c$UR5 grxrrs r]rReadOnlyColumnCollection.extendrr`c$UR5 grxr)r\items r]r?ReadOnlyColumnCollection.removerr`raN)rr)rzDict[str, _COL_co]rz).)rrrrrr)r5rrr)rrrr) rbrcrdrerrrUrYrrr?rgrar`r]r`r`s(IJ)r`r`c8\rSrSrSSjrS SjrSrS SjrSrg) ColumnSetic X;$rxrar\s r]r]ColumnSet.contains_columns {r`c8UHnURU5 M grx)r)r\rrs r]rColumnSet.extendsC HHSMr`c/nUH7nUH.nURU5(dMURX4:H5 M0 M9 [R"U6$rx)rnrOr5and_)r\rr#rrs r]rColumnSet.__eq__sK A##E**HHQZ(}}a  r`c8[[SU555$)Nc3$# UHov M g7frxra)r2rs r]r3%ColumnSet.__hash__..s*T!Ts)hashrr[s r]rCColumnSet.__hash__sE*T**++r`raN)rColumnClause[Any]rr)rz Iterable[Any]rrrD) rbrcrdrer]rrrCrgrar`r]rrs!,r`rrc[[U5R$![aM [R "[[ U55H#n[U5(dMURs s$ ef=f)zReturn the nearest .entity_namespace for the given entity. If not immediately available, does an iterate to find a sub-element that has one, if any. )r rrrr iterater&r)entityr s r]_entity_namespacersd'0AAA $$T*?%HID'--,,,J  s?A3A3/A3c[U5nU[La [X1U5$[X15$![a%n[R "SU<SU<S35UeSnAff=f)zReturn an entry from an entity_namespace. 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"*(#/+'-*""#/6#%'$&'%+$(.+&"#%;3<.,5?+2:"IHH%T% II '' E' T e8CH-.'S1 z 42:1D1D2. CxC8(8 0 s#  @ <  /  3;LM%m,,%0: ??? N8 nS#X.8 v$nS#X.$@*+1,1uCuCpiiX$  ?j?545B_5 _5D@w @('$n'$$n'b 8))8*'););DMDtj )U49-s 3 )#74 Hv12)WW%)XEww/0ED K'9 : lN-c9n=lN^,Wg-=>:, 34,( =,6< = 3 r`