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    بf,                     @   s*   d dl mZ d dlmZ G dd dZdS )    )ProgrammingError)cached_propertyc                   @   s  e Zd ZdZdZdZg ZdZdZdZ	dZ
dZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZ dZ!dZ"dZ#dZ$dZ%dZ&dZ'dZ(dZ)dZ*dZ+dZ,dZ-dZ.dZ/dZ0dZ1dZ2dZ3dZ4dZ5dZ6dZ7dZ8dZ9dZ:dZ;dZ<dZ=dZ>dZ?dZ@dZAdZBdZCdZDdZEdZFdZGeHZIdZJdZKdZLdZMdZNdZOdZPdZQdZRdZSdZTdZUdZVdZWdZXdZYdZZdZ[dZ\dZ]dZ^dZ_e` ZadZbdZcdZddZedZfdZgdZhdd	 Ziejd
d Zkejdd ZldS )BaseDatabaseFeaturesFTNZBigAutoFieldZBooleanField    c                 C   s
   || _ d S )N)
connection)selfr    r	   X/var/www/dscantool/venv/lib/python3.10/site-packages/django/db/backends/base/features.py__init__   s   
zBaseDatabaseFeatures.__init__c                 C   s   | j jjduS )z5Does this backend support explaining query execution?N)r   opsZexplain_prefix)r   r	   r	   r
   #supports_explaining_query_execution#  s   z8BaseDatabaseFeatures.supports_explaining_query_executionc                 C   s   | j  5}|d | j d |d | j   | j d |d | \}|d W d   |dkS 1 s=w   Y  |dkS )	z!Confirm support for transactions.z"CREATE TABLE ROLLBACK_TEST (X INT)Fz(INSERT INTO ROLLBACK_TEST (X) VALUES (8)Tz"SELECT COUNT(X) FROM ROLLBACK_TESTzDROP TABLE ROLLBACK_TESTNr   )r   cursorexecuteZset_autocommitrollbackZfetchone)r   r   countr	   r	   r
   supports_transactions(  s   
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		z*BaseDatabaseFeatures.supports_transactions)m__name__
__module____qualname__Zgis_enabledZallows_group_by_pkZallows_group_by_selected_pksZempty_fetchmany_valueZupdate_can_self_selectZ!interprets_empty_strings_as_nullsZ$supports_nullable_unique_constraintsZ.supports_partially_nullable_unique_constraintsZcan_use_chunked_readsZcan_return_id_from_insertZcan_return_ids_from_bulk_insertZhas_bulk_insertZuses_savepointsZcan_release_savepointsZrelated_fields_match_typeZallow_sliced_subqueries_with_inZhas_select_for_updateZhas_select_for_update_nowaitZ!has_select_for_update_skip_lockedZhas_select_for_update_ofZselect_for_update_of_columnZ#test_db_allows_multiple_connectionsZsupports_unspecified_pkZsupports_forward_referencesZtruncates_namesZhas_real_datatypeZsupports_subqueries_in_group_byZhas_native_uuid_fieldZhas_native_duration_fieldZsupports_temporal_subtractionZsupports_regex_backreferencingZ!supports_date_lookup_using_stringZsupports_timezonesZhas_zoneinfo_databaseZ-requires_explicit_null_ordering_when_groupingZnulls_order_largestZmax_query_paramsZallows_auto_pk_0Zcan_defer_constraint_checksZ(supports_mixed_date_datetime_comparisonsZsupports_tablespacesZsupports_sequence_resetZcan_introspect_defaultZcan_introspect_foreign_keysZcan_introspect_autofieldZ can_introspect_big_integer_fieldZcan_introspect_binary_fieldZcan_introspect_decimal_fieldZcan_introspect_duration_fieldZcan_introspect_ip_address_fieldZ%can_introspect_positive_integer_fieldZ"can_introspect_small_integer_fieldZcan_introspect_time_fieldZ introspected_big_auto_field_typeZintrospected_boolean_field_typeZsupports_index_column_orderingZ!can_introspect_materialized_viewsZcan_distinct_on_fieldsZ"autocommits_when_autocommit_is_offZatomic_transactionsZcan_rollback_ddlZ!supports_atomic_references_renameZsupports_combined_altersZsupports_foreign_keysZ!supports_column_check_constraintsZ supports_table_check_constraintsZsupports_paramstyle_pyformatZrequires_literal_defaultsZconnection_persists_old_columnsr   Zclosed_cursor_error_classZhas_case_insensitive_likeZbare_select_suffixZimplied_column_nullZ%supports_select_for_update_with_limitZgreatest_least_ignores_nullsZcan_clone_databasesZignores_table_name_caseZfor_update_after_fromZsupports_select_unionZsupports_select_intersectionZsupports_select_differenceZ%supports_slicing_ordering_in_compoundZ supports_parentheses_in_compoundZ supports_aggregate_filter_clauseZsupports_index_on_text_fieldZsupports_over_clauseZsupports_cast_with_precisionZtime_cast_precisionZ(create_test_procedure_without_params_sqlZ(create_test_procedure_with_int_param_sqlZsupports_callproc_kwargsZ!db_functions_convert_bytes_to_strsetZsupported_explain_formatsZvalidates_explain_optionsZsupports_default_in_lead_lagZsupports_ignore_conflictsZrequires_casted_case_in_updatesZsupports_partial_indexesZ%supports_functions_in_partial_indexesZ*allows_multiple_constraints_on_same_fieldsr   r   r   r   r	   r	   r	   r
   r      s    
r   N)Zdjango.db.utilsr   Zdjango.utils.functionalr   r   r	   r	   r	   r
   <module>   s    