o g?@stddlmZddlmZddlmZddlmZddlmZddlm Z dd l m Z dd l m Z dd l m Z dd l mZdd l mZddl mZddlmZddlmZddlmZededZerhddlmZGddde jZGdddeZddZGdddejeZGdddeZGdd d eZ Gd!d"d"eZ!Gd#d$d$eZ"Gd%d&d&eZ#Gd'd(d(eZ$d)S)*) annotations)Any) TYPE_CHECKING)TypeVar)types)ARRAY) coercions)elements) expression) functions)roles)schema)ColumnCollectionConstraint)TEXT)InternalTraversal_T)bound)_TraverseInternalsTypec@sreZdZUdZdZdZdejfdejfdejfgZ de d<dd Z dd d Z d dZ ejfddZeddZd S)aggregate_order_byaRepresent a PostgreSQL aggregate order by expression. E.g.:: from sqlalchemy.dialects.postgresql import aggregate_order_by expr = func.array_agg(aggregate_order_by(table.c.a, table.c.b.desc())) stmt = select(expr) would represent the expression: .. sourcecode:: sql SELECT array_agg(a ORDER BY b DESC) FROM table; Similarly:: expr = func.string_agg( table.c.a, aggregate_order_by(literal_column("','"), table.c.a) ) stmt = select(expr) Would represent: .. sourcecode:: sql SELECT string_agg(a, ',' ORDER BY a) FROM table; .. versionchanged:: 1.2.13 - the ORDER BY argument may be multiple terms .. seealso:: :class:`_functions.array_agg` postgresqltargettypeorder_byr_traverse_internalscGsjttj||_|jj|_t|}|dkrtd|dkr)ttj|d|_dSt j |dtji|_dS)Nrz)at least one ORDER BY element is requiredr_literal_as_text_role) r expectrExpressionElementRolerrlen TypeErrorrr ClauseList)selfrr_lobr$^/var/www/html/flaskapp/venv/lib/python3.10/site-packages/sqlalchemy/dialects/postgresql/ext.py__init__Ns    zaggregate_order_by.__init__NcCs|SNr$)r"againstr$r$r% self_group^szaggregate_order_by.self_groupcKs |j|jfSr'rr)r"kwargsr$r$r% get_childrenas zaggregate_order_by.get_childrencKs,||jfi||_||jfi||_dSr'r*)r"clonekwr$r$r%_copy_internalsdsz"aggregate_order_by._copy_internalscCs|jj|jjSr')r _from_objectsrr"r$r$r%r0hsz aggregate_order_by._from_objectsr')__name__ __module__ __qualname____doc____visit_name__stringify_dialectrdp_clauseelementdp_typer__annotations__r&r)r,r _cloner/propertyr0r$r$r$r%r s $  rcsPeZdZdZdZdZdZdZe dddd d Z fd d Z dd dZ Z S)ExcludeConstraintzA table-level EXCLUDE constraint. Defines an EXCLUDE constraint as described in the `PostgreSQL documentation`__. __ https://www.postgresql.org/docs/current/static/sql-createtable.html#SQL-CREATETABLE-EXCLUDE exclude_constraintNFrwherez:class:`.ExcludeConstraint`z$:paramref:`.ExcludeConstraint.where`cOsg}g}i|_t|\}}tttj||D]+\\}}} } } | dur(|| |dur/|jn| } | dur:| |j| <||| | fq||_t j |g|R| d| d| dd| dd|_ | d} | durut tj| |_| d i|_dS) a Create an :class:`.ExcludeConstraint` object. E.g.:: const = ExcludeConstraint( (Column("period"), "&&"), (Column("group"), "="), where=(Column("group") != "some group"), ops={"group": "my_operator_class"}, ) The constraint is normally embedded into the :class:`_schema.Table` construct directly, or added later using :meth:`.append_constraint`:: some_table = Table( "some_table", metadata, Column("id", Integer, primary_key=True), Column("period", TSRANGE()), Column("group", String), ) some_table.append_constraint( ExcludeConstraint( (some_table.c.period, "&&"), (some_table.c.group, "="), where=some_table.c.group != "some group", name="some_table_excl_const", ops={"group": "my_operator_class"}, ) ) The exclude constraint defined in this example requires the ``btree_gist`` extension, that can be created using the command ``CREATE EXTENSION btree_gist;``. :param \*elements: A sequence of two tuples of the form ``(column, operator)`` where "column" is either a :class:`_schema.Column` object, or a SQL expression element (e.g. ``func.int8range(table.from, table.to)``) or the name of a column as string, and "operator" is a string containing the operator to use (e.g. `"&&"` or `"="`). In order to specify a column name when a :class:`_schema.Column` object is not available, while ensuring that any necessary quoting rules take effect, an ad-hoc :class:`_schema.Column` or :func:`_expression.column` object should be used. The ``column`` may also be a string SQL expression when passed as :func:`_expression.literal_column` or :func:`_expression.text` :param name: Optional, the in-database name of this constraint. :param deferrable: Optional bool. If set, emit DEFERRABLE or NOT DEFERRABLE when issuing DDL for this constraint. :param initially: Optional string. If set, emit INITIALLY when issuing DDL for this constraint. :param using: Optional string. If set, emit USING when issuing DDL for this constraint. Defaults to 'gist'. :param where: Optional SQL expression construct or literal SQL string. If set, emit WHERE when issuing DDL for this constraint. :param ops: Optional dictionary. Used to define operator classes for the elements; works the same way as that of the :ref:`postgresql_ops ` parameter specified to the :class:`_schema.Index` construct. .. versionadded:: 1.3.21 .. seealso:: :ref:`postgresql_operator_classes` - general description of how PostgreSQL operator classes are specified. Nname deferrable initially)r@rArBusinggistr?ops) operatorszipr expect_col_expression_collectionrDDLConstraintColumnRoleappendr@ _render_exprsrr&getrCrStatementOptionRoler?rE)r"r r.columns render_exprs expressionsrFexprcolumnstrname add_elementoperatorr@r?r$r$r%r&~s>_    zExcludeConstraint.__init__c s&tfdd|jD|_dS)Ncs0g|]\}}}t|ts|nj|||fqSr$) isinstancestrc).0rQr@rUtabler$r% sz1ExcludeConstraint._set_parent..)super _set_parentrK)r"r[r. __class__rZr%r^s   zExcludeConstraint._set_parentc sJfddjD}j|jjjjjd}|jj|S)Ncs&g|]\}}}t|j|fqSr$)r_copy_expressionparent)rYrQ_rUr" target_tabler$r%r\s z+ExcludeConstraint._copy..)r@rArBr?rC) rKr`r@rArBr?rCdispatch_update)r"rer.r rXr$rdr%_copys zExcludeConstraint._copyr')r2r3r4r5r6r? inherit_cachecreate_drop_stringify_dialectr _document_text_coercionr&r^rh __classcell__r$r$r_r%r=ms    r=cOst|d<tjj|i|S)zPostgreSQL-specific form of :class:`_functions.array_agg`, ensures return type is :class:`_postgresql.ARRAY` and not the plain :class:`_types.ARRAY`, unless an explicit ``type_`` is passed. _default_array_type)rr func array_agg)argr.r$r$r%ro$srocs eZdZdZfddZZS) _regconfig_fnTcsrt|}t|dkr!tjtj|dtddtj d}|g}ng}fdd|D}t j ||i|dS)Nrrr@)r@apply_propagate_attrstype_c (g|]}tjtj|tdddqSr@N)r@rrr rrrgetattrrYrXr1r$r%r\@ z*_regconfig_fn.__init__..) listrr rrrpoprwr REGCONFIGr]r&)r"argsr+ initial_arg addtl_argsr_r1r%r&2s    z_regconfig_fn.__init__)r2r3r4rir&rlr$r$r_r%rq/srqc@eZdZdZdZejZdS) to_tsvectoraThe PostgreSQL ``to_tsvector`` SQL function. This function applies automatic casting of the REGCONFIG argument to use the :class:`_postgresql.REGCONFIG` datatype automatically, and applies a return type of :class:`_postgresql.TSVECTOR`. Assuming the PostgreSQL dialect has been imported, either by invoking ``from sqlalchemy.dialects import postgresql``, or by creating a PostgreSQL engine using ``create_engine("postgresql...")``, :class:`_postgresql.to_tsvector` will be used automatically when invoking ``sqlalchemy.func.to_tsvector()``, ensuring the correct argument and return type handlers are used at compile and execution time. .. versionadded:: 2.0.0rc1 TN)r2r3r4r5rirTSVECTORrr$r$r$r%rL rc@r) to_tsqueryaThe PostgreSQL ``to_tsquery`` SQL function. This function applies automatic casting of the REGCONFIG argument to use the :class:`_postgresql.REGCONFIG` datatype automatically, and applies a return type of :class:`_postgresql.TSQUERY`. Assuming the PostgreSQL dialect has been imported, either by invoking ``from sqlalchemy.dialects import postgresql``, or by creating a PostgreSQL engine using ``create_engine("postgresql...")``, :class:`_postgresql.to_tsquery` will be used automatically when invoking ``sqlalchemy.func.to_tsquery()``, ensuring the correct argument and return type handlers are used at compile and execution time. .. versionadded:: 2.0.0rc1 TNr2r3r4r5rirTSQUERYrr$r$r$r%rbrrc@r)plainto_tsqueryaThe PostgreSQL ``plainto_tsquery`` SQL function. This function applies automatic casting of the REGCONFIG argument to use the :class:`_postgresql.REGCONFIG` datatype automatically, and applies a return type of :class:`_postgresql.TSQUERY`. Assuming the PostgreSQL dialect has been imported, either by invoking ``from sqlalchemy.dialects import postgresql``, or by creating a PostgreSQL engine using ``create_engine("postgresql...")``, :class:`_postgresql.plainto_tsquery` will be used automatically when invoking ``sqlalchemy.func.plainto_tsquery()``, ensuring the correct argument and return type handlers are used at compile and execution time. .. versionadded:: 2.0.0rc1 TNrr$r$r$r%rxrrc@r)phraseto_tsqueryaThe PostgreSQL ``phraseto_tsquery`` SQL function. This function applies automatic casting of the REGCONFIG argument to use the :class:`_postgresql.REGCONFIG` datatype automatically, and applies a return type of :class:`_postgresql.TSQUERY`. Assuming the PostgreSQL dialect has been imported, either by invoking ``from sqlalchemy.dialects import postgresql``, or by creating a PostgreSQL engine using ``create_engine("postgresql...")``, :class:`_postgresql.phraseto_tsquery` will be used automatically when invoking ``sqlalchemy.func.phraseto_tsquery()``, ensuring the correct argument and return type handlers are used at compile and execution time. .. versionadded:: 2.0.0rc1 TNrr$r$r$r%rrrc@r)websearch_to_tsqueryaThe PostgreSQL ``websearch_to_tsquery`` SQL function. This function applies automatic casting of the REGCONFIG argument to use the :class:`_postgresql.REGCONFIG` datatype automatically, and applies a return type of :class:`_postgresql.TSQUERY`. Assuming the PostgreSQL dialect has been imported, either by invoking ``from sqlalchemy.dialects import postgresql``, or by creating a PostgreSQL engine using ``create_engine("postgresql...")``, :class:`_postgresql.websearch_to_tsquery` will be used automatically when invoking ``sqlalchemy.func.websearch_to_tsquery()``, ensuring the correct argument and return type handlers are used at compile and execution time. .. versionadded:: 2.0.0rc1 TNrr$r$r$r%rrrcs(eZdZdZdZeZfddZZS) ts_headlineaThe PostgreSQL ``ts_headline`` SQL function. This function applies automatic casting of the REGCONFIG argument to use the :class:`_postgresql.REGCONFIG` datatype automatically, and applies a return type of :class:`_types.TEXT`. Assuming the PostgreSQL dialect has been imported, either by invoking ``from sqlalchemy.dialects import postgresql``, or by creating a PostgreSQL engine using ``create_engine("postgresql...")``, :class:`_postgresql.ts_headline` will be used automatically when invoking ``sqlalchemy.func.ts_headline()``, ensuring the correct argument and return type handlers are used at compile and execution time. .. versionadded:: 2.0.0rc1 Tcst|}t|dkr d}nt|dtjr!|djjtjur!d}nd}|r.)rzrrVr ColumnElementr_type_affinityrrr rrrr{rwr|r]r&)r"r}r+ has_regconfigr~rr_r1r%r&s,    zts_headline.__init__) r2r3r4r5rirrr&rlr$r$r_r%rs rN)% __future__rtypingrrrrarrayrsqlr r r r rr sql.schemar sql.sqltypesr sql.visitorsrrrrrr=roGenericFunctionrqrrrrrrr$r$r$r%s:                 M8