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o �h� � @ sZ d dl mZ d dlmZ d dlmZ d dlmZ d dlm Z d dl m Z G dd� d�Z dS ) � )� GeometryField)�Distance)�Area)�NotSupportedError)�cached_propertyc s� e Zd ZdZdZdZdZdZdZdZ e dd� �Z dZ dZ i Zh d�ZdZd d � Zd d � Zd d� Zdd� Zdd� Zdd� Z� fdd�Zdd� Zdd� Zdd � Zd d � Ze e �Z � fd d �Z d!d"� Z d#d$� Z!d%d&� Z"� Z#S )'�BaseSpatialOperationsFN�%sc C s | j S �N)�select��self� r �d/usr/local/CyberPanel/lib/python3.10/site-packages/django/contrib/gis/db/backends/base/operations.py� select_extent s z#BaseSpatialOperations.select_extentr � >! r �AsGML�AsKML�AsSVG�Scale�Union�Length�Azimuth�FromWKB�FromWKT�GeoHash�IsEmpty�IsValid�MemSize�Reverse�Centroidr �Envelope� AsGeoJSON� MakeValid� NumPoints� Perimeter� Transform� Translate� Difference� SnapToGrid� Intersection� NumGeometries� SymDifference�BoundingCircle�PointOnSurface�LineLocatePoint�GeometryDistancec C � t d��)Nz:Aggregate extent not implemented for this spatial backend.��NotImplementedError�r �box�sridr r r �convert_extentM � �z$BaseSpatialOperations.convert_extentc C r0 )Nz=Aggregate 3D extent not implemented for this spatial backend.r1 r3 r r r �convert_extent3dR r7 z&BaseSpatialOperations.convert_extent3dc C s d| S )Nz'%s'r )r �namer r r �geo_quote_nameX s z$BaseSpatialOperations.geo_quote_namec C r0 )zh Return the database column type for the geometry field on the spatial backend. zGsubclasses of BaseSpatialOperations must provide a geo_db_type() methodr1 )r �fr r r � geo_db_type\ � �z!BaseSpatialOperations.geo_db_typec C r0 )zu Return the distance parameters for the given geometry field, lookup value, and lookup type. z:Distance operations not available on this spatial backend.r1 )r r; �value� lookup_typer r r � get_distancee r= z"BaseSpatialOperations.get_distancec C s� dd� }t |d�r||j|�rd| �d�|jf S dS |||�r.d| �d�| j|j|jf S | jjjr;d| j|jf S d | j S ) a Return the placeholder for the given geometry field with the given value. Depending on the spatial backend, the placeholder may contain a stored procedure call to the transformation function of the spatial backend. c S s | d uo | j |j kS r )r5 )r> �fieldr r r �transform_valuev s zCBaseSpatialOperations.get_geom_placeholder.<locals>.transform_value�as_sqlz %s(%%s, %s)r% r z%s(%s(%%s,%s), %s)z %s(%%s,%s)z%s(%%s))�hasattr� output_field�spatial_function_namer5 � from_text� connection�features�has_spatialrefsys_table)r r; r> �compilerrB r r r �get_geom_placeholdern s" ��� � z*BaseSpatialOperations.get_geom_placeholderc s* t || j�r td|j ��t� �|� d S )NzA%s spatial aggregation is not supported by this database backend.)� isinstance�disallowed_aggregatesr r9 �super�check_expression_support�r � expression�� __class__r r rP � s ��z.BaseSpatialOperations.check_expression_supportc C r0 )Nz;Aggregate support not implemented for this spatial backend.r1 )r �agg_namer r r �spatial_aggregate_name� r7 z,BaseSpatialOperations.spatial_aggregate_namec C s* || j v r td| ��| j�|| j| �S )Nz-This backend doesn't support the %s function.)�unsupported_functionsr �function_names�get�geom_func_prefix)r � func_namer r r rF � s �z+BaseSpatialOperations.spatial_function_namec C r0 )NzMSubclasses of BaseSpatialOperations must provide a geometry_columns() method.r1 r r r r �geometry_columns� r7 z&BaseSpatialOperations.geometry_columnsc C r0 )NzKsubclasses of BaseSpatialOperations must a provide spatial_ref_sys() methodr1 r r r r �spatial_ref_sys� r7 z%BaseSpatialOperations.spatial_ref_sysc s, t � �|�}t|jt�r|�| �|�� |S r )rO �get_db_convertersrM rE r �append�get_geometry_converter)r rR � convertersrS r r r^ � s z'BaseSpatialOperations.get_db_convertersc C r0 )NzSSubclasses of BaseSpatialOperations must provide a get_geometry_converter() method.r1 rQ r r r r` � r7 z,BaseSpatialOperations.get_geometry_converterc C s@ |� | j�r| jjjr dS td��|�| j�}|r t�|�S d S )N�sq_mz2Area on geodetic coordinate systems not supported.)�geodeticrH rI �supports_area_geodeticr2 � units_name� AreaMeasure� unit_attname)r rA re r r r �get_area_att_for_field� s � �z,BaseSpatialOperations.get_area_att_for_fieldc C s@ d }|� | j�r| jjjrd}|S |�| j�}|r t�|�}|S )N�m)rc rH rI �supports_distance_geodeticre �DistanceMeasurerg )r rA �dist_att�unitsr r r �get_distance_att_for_field� s � z0BaseSpatialOperations.get_distance_att_for_field)$�__name__� __module__� __qualname__�postgis� spatialite�mariadb�mysql�oracle�spatial_versionr r r rN rZ rX rW rG r6 r8 r: r< r@ rL rP rV rF r\ r] � staticmethodr �distance_expr_for_lookupr^ r` rh rn � __classcell__r r rS r r s> % r N) � django.contrib.gis.db.modelsr �&django.contrib.gis.db.models.functionsr �django.contrib.gis.measurer rf rk � django.dbr �django.utils.functionalr r r r r r �<module> s
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