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Editing: fields.cpython-310.pyc
o �a 6 � @ sZ d dl mZmZ d dlmZmZ d dlmZ d dlm Z d dl m Z m Z m Z mZmZmZmZmZmZ d dlmZ d dlmZ d dlmZ ee�a ed g d ��Z d d � Z G d d� de�Z G dd� de �Z G dd� de �Z!G dd� de �Z"G dd� de �Z#G dd� de �Z$G dd� de �Z%G dd � d e �Z&G d d � d e �Z'G d d � d e�Z(G d!d"� d"e �Z)d#S )$� )� defaultdict� namedtuple)�forms�gdal)� SpatialProxy)� GDALException) �GeometryCollection� GEOSException� GEOSGeometry� LineString�MultiLineString� MultiPoint� MultiPolygon�Point�Polygon)�ImproperlyConfigured)�Field)� gettext_lazy�SRIDCacheEntry��units� units_name�spheroid�geodeticc s� ddl m} z�j�� � W n ty d� Y nw � r%�j� �fdd�fnd|f\}}| t| vrP|| �}|j\}}t||d|d |j |j f |j d�t| | < t| | S ) z� Return the units, unit name, and spheroid WKT associated with the given SRID from the `spatial_ref_sys` (or equivalent) spatial database table for the given database connection. These results are cached. r )�SpatialReferenceNc s � j ��j�j| d�jS )N��srid)�objects�using�alias�get�srsr �� SpatialRefSys� connection� �E/usr/lib/python3/dist-packages/django/contrib/gis/db/models/fields.py�<lambda>' s z get_srid_info.<locals>.<lambda>zSPHEROID["%s",%s,%s]r r ) �django.contrib.gis.gdalr �ops�spatial_ref_sys�NotImplementedErrorr � _srid_cacher r � semi_major�inverse_flattening� geographic)r r$ r r �get_srsr! r r r% r" r& � get_srid_info s( ��� � r1 c s� e Zd ZdZed�ZdZd � fdd� Z� fd d �Zd d � Z d d� Z dd� Z dd� Z dd� Z dd� Zdd� Z� fdd�Zdd � Z� fd d �Z� ZS ) �BaseSpatialFieldz� The Base GIS Field. It's used as a base class for GeometryField and RasterField. Defines properties that are common to all GIS fields such as the characteristics of the spatial reference system of the field. zThe base GIS field.FN�� Tc s* || _ || _||d< t� jdi |�� dS )a� The initialization function for base spatial fields. Takes the following as keyword arguments: srid: The spatial reference system identifier, an OGC standard. Defaults to 4326 (WGS84). spatial_index: Indicates whether to create a spatial index. Defaults to True. Set this instead of 'db_index' for geographic fields since index creation is different for geometry columns. � verbose_nameNr% )� spatial_indexr �super�__init__)�selfr4 r r5 �kwargs�� __class__r% r& r7 C s zBaseSpatialField.__init__c s< t � �� \}}}}| j|d< | jdur| j|d< ||||fS )Nr Tr5 )r6 � deconstructr r5 �r8 �name�path�argsr9 r: r% r& r< _ s z BaseSpatialField.deconstructc C s |j �| �S �N)r) � geo_db_type�r8 r$ r% r% r& �db_typeh � zBaseSpatialField.db_typec C � t | j|�jS rA )r1 r r rC r% r% r& r k � zBaseSpatialField.spheroidc C rF rA )r1 r r rC r% r% r& r n rG zBaseSpatialField.unitsc C rF rA )r1 r r rC r% r% r& r q rG zBaseSpatialField.units_namec C rF )z� Return true if this field's SRID corresponds with a coordinate system that uses non-projected units (e.g., latitude/longitude). )r1 r r rC r% r% r& r t s zBaseSpatialField.geodeticc C s |j �| ||�S )z\ Return the placeholder for the spatial column for the given value. )r) �get_geom_placeholder)r8 �value�compilerr$ r% r% r& �get_placeholder{ s z BaseSpatialField.get_placeholderc C s4 |j }|du s| j dks|dkr| j dkr| j S |S )a Return the default SRID for the given geometry or raster, taking into account the SRID set for the field. For example, if the input geometry or raster doesn't have an SRID, then the SRID of the field will be returned. N���r )r8 �objr r% r% r& �get_srid� s $zBaseSpatialField.get_sridc sR |d u rd S |j jt� j||g|�R i |��fi | jr%|jjr%ddi��S i ��S )N� geographyT)r) �Adapterr6 �get_db_prep_valuerO �features�supports_geography)r8 rI r$ r@ r9 r: r% r& rQ � s �����z"BaseSpatialField.get_db_prep_valuec C sl t |tj�r|S |rzt�|�W S ty Y dS w t |t�r4zt�|�W S ty3 td| ��w dS )zY Return a GDALRaster if conversion is successful, otherwise return None. �6Couldn't create spatial object from lookup value '%s'.N)� isinstancer � GDALRasterr �dict� ValueError)r8 rI � is_candidater% r% r& �get_raster_prep_value� s � ��z&BaseSpatialField.get_raster_prep_valuec s� t � �|�}|d u r d S t|t�rn8t|ttf�p t|d�}| �||�}|r)|}n!|rAzt|�}W n tt fy@ t d| ��w t dt |�j ��| � |�|_|S )N�__geo_interface__rT z>Cannot use object with type %s for a spatial lookup parameter.)r6 �get_prep_valuerU r �bytes�str�hasattrrZ r r rX �type�__name__rN r )r8 rI rM rY �rasterr: r% r& r\ � s$ � z BaseSpatialField.get_prep_value)Nr3 T)ra � __module__� __qualname__�__doc__�_� description�empty_strings_allowedr7 r< rD r r r r rK rN rQ rZ r\ � __classcell__r% r% r: r& r2 8 s r2 c sl e Zd ZdZed�ZejZdZ dZ dddd �� fd d � Z � fd d �Z � fdd�Z � fdd�Zdd� Z� ZS )� GeometryFieldzU The base Geometry field -- maps to the OpenGIS Specification Geometry type. uL The base Geometry field — maps to the OpenGIS Specification Geometry type.�GEOMETRYN� F�g �f�g �V�g �f@g �V@皙�����?)�extent� tolerancec s2 || _ || _|| _|| _t� jdd|i|�� dS )a� The initialization function for geometry fields. In addition to the parameters from BaseSpatialField, it takes the following as keyword arguments: dim: The number of dimensions for this geometry. Defaults to 2. extent: Customize the extent, in a 4-tuple of WGS 84 coordinates, for the geometry field entry in the `USER_SDO_GEOM_METADATA` table. Defaults to (-180.0, -90.0, 180.0, 90.0). tolerance: Define the tolerance, in meters, to use for the geometry field entry in the `USER_SDO_GEOM_METADATA` table. Defaults to 0.05. r4 Nr% )�dimrO �_extent� _tolerancer6 r7 )r8 r4 rq rO ro rp r9 r: r% r& r7 � s zGeometryField.__init__c sn t � �� \}}}}| jdkr| j|d< | jdur | j|d< | jdkr'| j|d< | jdkr1| j|d< ||||fS ) Nrl rq FrO rm ro rn rp )r6 r< rq rO rr rs r= r: r% r& r< � s zGeometryField.deconstructc s8 t � j||fi |�� t|| jt| jpt| td�� d S )N)� load_func)r6 �contribute_to_class�setattr�attnamer � geom_classr �r8 �clsr> r9 r: r% r& ru s "z!GeometryField.contribute_to_classc sR | j | j| jd�|�}| jdkr t|d jdd�s |�dtj� t � j di |��S )N)� form_class� geom_typer rl r{ � supports_3dF�widgetr% ) r{ r| r rq �getattrr~ � setdefaultr �Textarear6 � formfield)r8 r9 �defaultsr: r% r& r� s �� zGeometryField.formfieldc C s" |j js |jjj| |fS ||fS )z� Return the selection format string, depending on the requirements of the spatial backend. For example, Oracle and MySQL require custom selection formats in order to retrieve geometries in OGC WKB. )�query�subqueryr$ r) �select)r8 rJ �sql�paramsr% r% r& � select_format s zGeometryField.select_format)Nrl F)ra rc rd re rf rg r rj r{ r| rx r7 r< ru r� r� ri r% r% r: r& rj � s � rj c @ �" e Zd ZdZeZejZe d�Z dS )� PointField�POINTr N) ra rc rd r| r rx r r� r{ rf rg r% r% r% r& r� � r� c @ r� )�LineStringField� LINESTRINGz Line stringN) ra rc rd r| r rx r r� r{ rf rg r% r% r% r& r� $ r� r� c @ r� )� PolygonField�POLYGONr N) ra rc rd r| r rx r r� r{ rf rg r% r% r% r& r� + r� r� c @ r� )�MultiPointField� MULTIPOINTz Multi-pointN) ra rc rd r| r rx r r� r{ rf rg r% r% r% r& r� 2 r� r� c @ r� )�MultiLineStringField�MULTILINESTRINGzMulti-line stringN) ra rc rd r| r rx r r� r{ rf rg r% r% r% r& r� 9 r� r� c @ r� )�MultiPolygonField� MULTIPOLYGONz Multi polygonN) ra rc rd r| r rx r r� r{ rf rg r% r% r% r& r� @ r� r� c @ r� )�GeometryCollectionField�GEOMETRYCOLLECTIONzGeometry collectionN) ra rc rd r| r rx r r� r{ rf rg r% r% r% r& r� G r� r� c @ s( e Zd ZdZed�Zdd� Zdd� ZdS )� ExtentFieldz/Used as a return value from an extent aggregatezExtent Aggregate Fieldc C s dS )Nr� r% )r8 r% r% r& �get_internal_typeS s z ExtentField.get_internal_typec C s" |j jj}|r || |fS ||fS rA )r$ r) � select_extent)r8 rJ r� r� r� r% r% r& r� V s zExtentField.select_formatN)ra rc rd re rf rg r� r� r% r% r% r& r� N s r� c sX e Zd ZdZed�ZdZdZdd� Z� fdd�Z d d � Z � fd d �Z � fd d�Z � Z S )� RasterFieldzJ Raster field for GeoDjango -- evaluates into GDALRaster objects. z Raster Field�RASTERFc C s |j jr|j js td��d S )Nz3Raster fields require backends with raster support.)rR � gis_enabled�supports_rasterr rC r% r% r& �_check_connectiond s �z RasterField._check_connectionc s | � |� t� �|�S rA )r� r6 rD rC r: r% r& rD i s zRasterField.db_typec C s |j �|�S rA )r) � parse_raster)r8 rI � expressionr$ r% r% r& � from_db_valuem rE zRasterField.from_db_valuec s0 t � j||fi |�� t|| jttj| �� d S rA )r6 ru rv rw r r rV ry r: r% r& ru p s z RasterField.contribute_to_classc sH ddl m} zt|�}td|fd|i�W S ty Y nw t� �|�S )Nr )�RasterBandTransform�SpecificRasterBandTransform� band_index)�$django.contrib.gis.db.models.lookupsr� �intr` rX r6 � get_transform)r8 r> r� r� r: r% r& r� x s � � zRasterField.get_transform)ra rc rd re rf rg r| rO r� rD r� ru r� ri r% r% r: r& r� [ s r� N)*� collectionsr r �django.contrib.gisr r �"django.contrib.gis.db.models.proxyr � django.contrib.gis.gdal.errorr �django.contrib.gis.geosr r r r r r r r r �django.core.exceptionsr �django.db.modelsr �django.utils.translationr rf rW r, r r1 r2 rj r� r� r� r� r� r� r� r� r� r% r% r% r& �<module> s. , ! 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