Class PostGISOperations

Declaration

Methods

• ▶ def convert_extent(self, box) override

  Return a 4-tuple extent for the `Extent` aggregate by converting the bounding box text returned by PostGIS (`box` argument), for example: "BOX(-90.0 30.0, -85.0 40.0)".

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  This method overrides django.contrib.gis.db.backends.base.operations.BaseSpatialOperations.convert_extent.

• ▶ def convert_extent3d(self, box3d) override

  Return a 6-tuple extent for the `Extent3D` aggregate by converting the 3d bounding-box text returned by PostGIS (`box3d` argument), for example: "BOX3D(-90.0 30.0 1, -85.0 40.0 2)".

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  This method overrides django.contrib.gis.db.backends.base.operations.BaseSpatialOperations.convert_extent3d.

• ▷ def distance_expr_for_lookup(self, lhs, rhs, **kwargs)

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• ▷ def function_names(self) @cached_property

  @cached_property
  def function_names(self)

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• ▶ def geo_db_type(self, f) override

  Return the database field type for the given spatial field.

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  This method overrides django.contrib.gis.db.backends.base.operations.BaseSpatialOperations.geo_db_type.

• ▶ def geometry_columns(self) override

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  This method overrides django.contrib.gis.db.backends.base.operations.BaseSpatialOperations.geometry_columns.

• ▶ def get_area_att_for_field(self, field) override

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  This method overrides django.contrib.gis.db.backends.base.operations.BaseSpatialOperations.get_area_att_for_field.

• ▶ def get_distance(self, f, dist_val, lookup_type) override

  Retrieve the distance parameters for the given geometry field, distance lookup value, and the distance lookup type.

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  This method overrides django.contrib.gis.db.backends.base.operations.BaseSpatialOperations.get_distance.

  This is the most complex implementation of the spatial backends due to
  what is supported on geodetic geometry columns vs. what's available on
  projected geometry columns.  In addition, it has to take into account
  the geography column type.

• ▶ def get_geom_placeholder(self, f, value, compiler) override

  Provide a proper substitution value for Geometries or rasters that are not in the SRID of the field. Specifically, this routine will substitute in the ST_Transform() function call.

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  This method overrides django.contrib.gis.db.backends.base.operations.BaseSpatialOperations.get_geom_placeholder.

• ▶ def get_geometry_converter(self, expression) override

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  This method overrides django.contrib.gis.db.backends.base.operations.BaseSpatialOperations.get_geometry_converter.

• ▷ def parse_raster(self, value)

  Convert a PostGIS HEX String into a dict readable by GDALRaster.

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• ▷ def postgis_full_version(self)

  Return PostGIS version number and compile-time options.

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• ▷ def postgis_geos_version(self)

  Return the version of the GEOS library used with PostGIS.

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• ▷ def postgis_lib_version(self)

  Return the version number of the PostGIS library used with PostgreSQL.

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• ▷ def postgis_proj_version(self)

  Return the version of the PROJ library used with PostGIS.

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• ▷ def postgis_version(self)

  Return PostGIS version number and compile-time options.

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• ▷ def postgis_version_tuple(self)

  Return the PostGIS version as a tuple (version string, major, minor, subminor).

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• ▷ def proj_version_tuple(self)

  Return the version of PROJ used by PostGIS as a tuple of the major, minor, and subminor release numbers.

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• ▶ def spatial_aggregate_name(self, agg_name) override

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  This method overrides django.contrib.gis.db.backends.base.operations.BaseSpatialOperations.spatial_aggregate_name.

• ▶ def spatial_ref_sys(self) override

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  This method overrides django.contrib.gis.db.backends.base.operations.BaseSpatialOperations.spatial_ref_sys.

• ▷ def spatial_version(self) @cached_property

  Determine the version of the PostGIS library.

  @cached_property
  def spatial_version(self)

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Inherited methods

• Methods inherited from django.contrib.gis.db.backends.base.operations.BaseSpatialOperations:
  check_expression_support, geo_quote_name, get_db_converters, get_distance_att_for_field, select_extent, spatial_function_name
• Methods inherited from django.db.backends.postgresql.operations.DatabaseOperations:
  adapt_datefield_value, adapt_datetimefield_value, adapt_decimalfield_value, adapt_ipaddressfield_value, adapt_timefield_value, bulk_insert_sql, date_extract_sql, date_trunc_sql, datetime_cast_date_sql, datetime_cast_time_sql, datetime_extract_sql, datetime_trunc_sql, deferrable_sql, distinct_sql, explain_query_prefix, fetch_returned_insert_rows, ignore_conflicts_suffix_sql, last_executed_query, lookup_cast, max_name_length, no_limit_value, prep_for_iexact_query, prepare_sql_script, quote_name, return_insert_columns, sequence_reset_by_name_sql, sequence_reset_sql, set_time_zone_sql, sql_flush, subtract_temporals, tablespace_sql, time_trunc_sql, unification_cast_sql
• Methods inherited from django.db.backends.base.operations.BaseDatabaseOperations:
  __init__, adapt_unknown_value, autoinc_sql, binary_placeholder_sql, bulk_batch_size, cache_key_culling_sql, combine_duration_expression, combine_expression, compiler, conditional_expression_supported_in_where_clause, convert_durationfield_value, end_transaction_sql, execute_sql_flush, fetch_returned_insert_columns, field_cast_sql, for_update_sql, force_no_ordering, insert_statement, integer_field_range, last_insert_id, limit_offset_sql, max_in_list_size, modify_insert_params, pk_default_value, prep_for_like_query, process_clob, regex_lookup, savepoint_commit_sql, savepoint_create_sql, savepoint_rollback_sql, start_transaction_sql, time_extract_sql, validate_autopk_value, window_frame_end, window_frame_range_start_end, window_frame_rows_start_end, window_frame_start, year_lookup_bounds_for_date_field, year_lookup_bounds_for_datetime_field

Reexports

• Imported in django.contrib.gis.db.backends.postgis.base.

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