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o �h� � @ sT d Z ddlmZ ddlmZmZ ddlmZ G dd� dej�Z G dd� dej�Z d S ) zR This module holds simple classes to convert geospatial values from the database. � )�Decimal)�Area�Distance)�modelsc sB e Zd ZdZ� fdd�Zdd� Zd dd�Zd d � Zd d � Z� Z S )� AreaFieldzWrapper for Area values.c � t � �� || _d S �N��super�__init__� geo_field��selfr �� __class__� �a/usr/local/CyberPanel/lib/python3.10/site-packages/django/contrib/gis/db/models/sql/conversion.pyr � zAreaField.__init__c C s t |t�s td��|S )Nz0AreaField only accepts Area measurement objects.)� isinstancer � ValueError�r �valuer r r �get_prep_value s zAreaField.get_prep_valueFc C s, |d u rd S |j �| j�}|rt||�S |S r )�ops�get_area_att_for_fieldr �getattr)r r � connection�prepared�area_attr r r �get_db_prep_value s zAreaField.get_db_prep_valuec C sF |d u rd S t |t�rt|�}|j�| j�}|r!tdi ||i��S |S �Nr )r r �floatr r r r )r r � expressionr r r r r � from_db_value s zAreaField.from_db_valuec C � dS )Nr r �r r r r �get_internal_type( � zAreaField.get_internal_type�F� �__name__� __module__� __qualname__�__doc__r r r r# r& � __classcell__r r r r r s r c sF e Zd ZdZ� fdd�Z� fdd�Zd dd�Zd d � Zd d � Z� Z S )� DistanceFieldz Wrapper for Distance values.c r r r r r r r r / r zDistanceField.__init__c s t |t�r|S t� �|�S r )r r r r r r r r r 3 s z DistanceField.get_prep_valueFc C s2 t |t�s|S |j�| j�}|std��t||�S )Nz?Distance measure is supplied, but units are unknown for result.)r r r �get_distance_att_for_fieldr r r )r r r r � distance_attr r r r 8 s � z DistanceField.get_db_prep_valuec C s4 |d u rd S |j �| j�}|rtdi ||i��S |S r )r r0 r r )r r r" r r1 r r r r# B s zDistanceField.from_db_valuec C r$ )Nr/ r r% r r r r& H r' z DistanceField.get_internal_typer( r) r r r r r/ , s r/ N) r- �decimalr �django.contrib.gis.measurer r � django.dbr � FloatFieldr r/ r r r r �<module> s !
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