Converted GIS lookups to use the new Lookup API
Thanks Tim Graham, Anssi Kääriäinen and Marc Tamlyn for the reviews.
This commit is contained in:
Claude Paroz
parent
4ef9618e12
commit
2bd1bbc424
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@ -42,19 +42,19 @@ class BaseSpatialFeatures(object):
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@property
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def supports_bbcontains_lookup(self):
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return 'bbcontains' in self.connection.ops.gis_terms
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return 'bbcontains' in self.connection.ops.gis_operators
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@property
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def supports_contained_lookup(self):
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return 'contained' in self.connection.ops.gis_terms
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return 'contained' in self.connection.ops.gis_operators
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@property
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def supports_dwithin_lookup(self):
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return 'dwithin' in self.connection.ops.distance_functions
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return 'dwithin' in self.connection.ops.gis_operators
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@property
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def supports_relate_lookup(self):
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return 'relate' in self.connection.ops.gis_terms
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return 'relate' in self.connection.ops.gis_operators
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# For each of those methods, the class will have a property named
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# `has_<name>_method` (defined in __init__) which accesses connection.ops
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@ -97,12 +97,6 @@ class BaseSpatialOperations(object):
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instantiated by each spatial database backend with the features
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it has.
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"""
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distance_functions = {}
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geometry_functions = {}
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geometry_operators = {}
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geography_operators = {}
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geography_functions = {}
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gis_terms = set()
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truncate_params = {}
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# Quick booleans for the type of this spatial backend, and
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@ -215,9 +209,6 @@ class BaseSpatialOperations(object):
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def spatial_aggregate_sql(self, agg):
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raise NotImplementedError('Aggregate support not implemented for this spatial backend.')
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def spatial_lookup_sql(self, lvalue, lookup_type, value, field):
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raise NotImplementedError('subclasses of BaseSpatialOperations must a provide spatial_lookup_sql() method')
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# Routines for getting the OGC-compliant models.
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def geometry_columns(self):
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raise NotImplementedError('subclasses of BaseSpatialOperations must a provide geometry_columns() method')
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@ -2,6 +2,7 @@ from django.db.backends.mysql.base import DatabaseOperations
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from django.contrib.gis.db.backends.adapter import WKTAdapter
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from django.contrib.gis.db.backends.base import BaseSpatialOperations
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from django.contrib.gis.db.backends.utils import SpatialOperator
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class MySQLOperations(DatabaseOperations, BaseSpatialOperations):
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@ -16,27 +17,25 @@ class MySQLOperations(DatabaseOperations, BaseSpatialOperations):
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Adapter = WKTAdapter
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Adaptor = Adapter # Backwards-compatibility alias.
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geometry_functions = {
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'bbcontains': 'MBRContains', # For consistency w/PostGIS API
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'bboverlaps': 'MBROverlaps', # .. ..
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'contained': 'MBRWithin', # .. ..
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'contains': 'MBRContains',
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'disjoint': 'MBRDisjoint',
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'equals': 'MBREqual',
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'exact': 'MBREqual',
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'intersects': 'MBRIntersects',
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'overlaps': 'MBROverlaps',
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'same_as': 'MBREqual',
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'touches': 'MBRTouches',
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'within': 'MBRWithin',
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gis_operators = {
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'bbcontains': SpatialOperator(func='MBRContains'), # For consistency w/PostGIS API
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'bboverlaps': SpatialOperator(func='MBROverlaps'), # .. ..
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'contained': SpatialOperator(func='MBRWithin'), # .. ..
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'contains': SpatialOperator(func='MBRContains'),
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'disjoint': SpatialOperator(func='MBRDisjoint'),
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'equals': SpatialOperator(func='MBREqual'),
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'exact': SpatialOperator(func='MBREqual'),
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'intersects': SpatialOperator(func='MBRIntersects'),
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'overlaps': SpatialOperator(func='MBROverlaps'),
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'same_as': SpatialOperator(func='MBREqual'),
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'touches': SpatialOperator(func='MBRTouches'),
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'within': SpatialOperator(func='MBRWithin'),
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}
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gis_terms = set(geometry_functions) | {'isnull'}
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def geo_db_type(self, f):
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return f.geom_type
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def get_geom_placeholder(self, value, srid):
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def get_geom_placeholder(self, f, value):
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"""
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The placeholder here has to include MySQL's WKT constructor. Because
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MySQL does not support spatial transformations, there is no need to
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@ -47,19 +46,3 @@ class MySQLOperations(DatabaseOperations, BaseSpatialOperations):
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else:
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placeholder = '%s(%%s)' % self.from_text
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return placeholder
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def spatial_lookup_sql(self, lvalue, lookup_type, value, field, qn):
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geo_col, db_type = lvalue
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lookup_info = self.geometry_functions.get(lookup_type, False)
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if lookup_info:
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sql = "%s(%s, %s)" % (lookup_info, geo_col,
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self.get_geom_placeholder(value, field.srid))
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return sql, []
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# TODO: Is this really necessary? MySQL can't handle NULL geometries
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# in its spatial indexes anyways.
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if lookup_type == 'isnull':
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return "%s IS %sNULL" % (geo_col, ('' if value else 'NOT ')), []
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raise TypeError("Got invalid lookup_type: %s" % repr(lookup_type))
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@ -244,6 +244,12 @@ class OracleOperations(DatabaseOperations, BaseSpatialOperations):
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else:
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return 'SDO_GEOMETRY(%%s, %s)' % f.srid
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def check_relate_argument(self, arg):
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masks = 'TOUCH|OVERLAPBDYDISJOINT|OVERLAPBDYINTERSECT|EQUAL|INSIDE|COVEREDBY|CONTAINS|COVERS|ANYINTERACT|ON'
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mask_regex = re.compile(r'^(%s)(\+(%s))*$' % (masks, masks), re.I)
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if not self.mask_regex.match(arg):
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raise ValueError('Invalid SDO_RELATE mask: "%s"' % (self.relate_func, arg))
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def spatial_lookup_sql(self, lvalue, lookup_type, value, field, qn):
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"Returns the SQL WHERE clause for use in Oracle spatial SQL construction."
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geo_col, db_type = lvalue
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@ -1,73 +1,46 @@
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import re
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from decimal import Decimal
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from django.conf import settings
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from django.contrib.gis.db.backends.base import BaseSpatialOperations
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from django.contrib.gis.db.backends.utils import SpatialOperation, SpatialFunction
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from django.contrib.gis.db.backends.postgis.adapter import PostGISAdapter
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from django.contrib.gis.db.backends.utils import SpatialOperator
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from django.contrib.gis.geometry.backend import Geometry
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from django.contrib.gis.measure import Distance
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from django.core.exceptions import ImproperlyConfigured
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from django.db.backends.postgresql_psycopg2.base import DatabaseOperations
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from django.db.utils import ProgrammingError
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from django.utils import six
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from django.utils.functional import cached_property
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from .models import PostGISGeometryColumns, PostGISSpatialRefSys
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#### Classes used in constructing PostGIS spatial SQL ####
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class PostGISOperator(SpatialOperation):
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"For PostGIS operators (e.g. `&&`, `~`)."
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def __init__(self, operator):
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super(PostGISOperator, self).__init__(operator=operator)
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class PostGISOperator(SpatialOperator):
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def __init__(self, geography=False, **kwargs):
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# Only a subset of the operators and functions are available
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# for the geography type.
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self.geography = geography
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super(PostGISOperator, self).__init__(**kwargs)
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def as_sql(self, connection, lookup, *args):
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if lookup.lhs.source.geography and not self.geography:
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raise ValueError('PostGIS geography does not support the "%s" '
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'function/operator.' % (self.func or self.op,))
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return super(PostGISOperator, self).as_sql(connection, lookup, *args)
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class PostGISFunction(SpatialFunction):
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"For PostGIS function calls (e.g., `ST_Contains(table, geom)`)."
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def __init__(self, prefix, function, **kwargs):
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super(PostGISFunction, self).__init__(prefix + function, **kwargs)
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class PostGISDistanceOperator(PostGISOperator):
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sql_template = '%(func)s(%(lhs)s, %(rhs)s) %(op)s %%s'
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class PostGISFunctionParam(PostGISFunction):
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"For PostGIS functions that take another parameter (e.g. DWithin, Relate)."
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sql_template = '%(function)s(%(geo_col)s, %(geometry)s, %%s)'
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class PostGISDistance(PostGISFunction):
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"For PostGIS distance operations."
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dist_func = 'Distance'
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sql_template = '%(function)s(%(geo_col)s, %(geometry)s) %(operator)s %%s'
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def __init__(self, prefix, operator):
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super(PostGISDistance, self).__init__(prefix, self.dist_func,
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operator=operator)
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class PostGISSpheroidDistance(PostGISFunction):
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"For PostGIS spherical distance operations (using the spheroid)."
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dist_func = 'distance_spheroid'
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sql_template = '%(function)s(%(geo_col)s, %(geometry)s, %%s) %(operator)s %%s'
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def __init__(self, prefix, operator):
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# An extra parameter in `end_subst` is needed for the spheroid string.
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super(PostGISSpheroidDistance, self).__init__(prefix, self.dist_func,
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operator=operator)
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class PostGISSphereDistance(PostGISDistance):
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"For PostGIS spherical distance operations."
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dist_func = 'distance_sphere'
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class PostGISRelate(PostGISFunctionParam):
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"For PostGIS Relate(<geom>, <pattern>) calls."
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pattern_regex = re.compile(r'^[012TF\*]{9}$')
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def __init__(self, prefix, pattern):
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if not self.pattern_regex.match(pattern):
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raise ValueError('Invalid intersection matrix pattern "%s".' % pattern)
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super(PostGISRelate, self).__init__(prefix, 'Relate')
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def as_sql(self, connection, lookup, template_params, sql_params):
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if not lookup.lhs.source.geography and lookup.lhs.source.geodetic(connection):
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sql_template = self.sql_template
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if len(lookup.rhs) == 3 and lookup.rhs[-1] == 'spheroid':
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template_params.update({'op': self.op, 'func': 'ST_Distance_Spheroid'})
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sql_template = '%(func)s(%(lhs)s, %(rhs)s, %%s) %(op)s %%s'
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else:
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template_params.update({'op': self.op, 'func': 'ST_Distance_Sphere'})
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return sql_template % template_params, sql_params
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return super(PostGISDistanceOperator, self).as_sql(connection, lookup, template_params, sql_params)
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class PostGISOperations(DatabaseOperations, BaseSpatialOperations):
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@ -82,104 +55,43 @@ class PostGISOperations(DatabaseOperations, BaseSpatialOperations):
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Adapter = PostGISAdapter
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Adaptor = Adapter # Backwards-compatibility alias.
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gis_operators = {
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'bbcontains': PostGISOperator(op='~'),
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'bboverlaps': PostGISOperator(op='&&', geography=True),
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'contained': PostGISOperator(op='@'),
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'contains': PostGISOperator(func='ST_Contains'),
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'overlaps_left': PostGISOperator(op='&<'),
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'overlaps_right': PostGISOperator(op='&>'),
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'overlaps_below': PostGISOperator(op='&<|'),
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'overlaps_above': PostGISOperator(op='|&>'),
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'left': PostGISOperator(op='<<'),
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'right': PostGISOperator(op='>>'),
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'strictly_below': PostGISOperator(op='<<|'),
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'stricly_above': PostGISOperator(op='|>>'),
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'same_as': PostGISOperator(op='~='),
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'exact': PostGISOperator(op='~='), # alias of same_as
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'contains_properly': PostGISOperator(func='ST_ContainsProperly'),
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'coveredby': PostGISOperator(func='ST_CoveredBy', geography=True),
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'covers': PostGISOperator(func='ST_Covers', geography=True),
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'crosses': PostGISOperator(func='ST_Crosses)'),
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'disjoint': PostGISOperator(func='ST_Disjoint'),
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'equals': PostGISOperator(func='ST_Equals'),
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'intersects': PostGISOperator(func='ST_Intersects', geography=True),
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'overlaps': PostGISOperator(func='ST_Overlaps'),
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'relate': PostGISOperator(func='ST_Relate'),
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'touches': PostGISOperator(func='ST_Touches'),
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'within': PostGISOperator(func='ST_Within'),
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'dwithin': PostGISOperator(func='ST_DWithin', geography=True),
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'distance_gt': PostGISDistanceOperator(func='ST_Distance', op='>', geography=True),
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'distance_gte': PostGISDistanceOperator(func='ST_Distance', op='>=', geography=True),
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'distance_lt': PostGISDistanceOperator(func='ST_Distance', op='<', geography=True),
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'distance_lte': PostGISDistanceOperator(func='ST_Distance', op='<=', geography=True),
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}
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def __init__(self, connection):
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super(PostGISOperations, self).__init__(connection)
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prefix = self.geom_func_prefix
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# PostGIS-specific operators. The commented descriptions of these
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# operators come from Section 7.6 of the PostGIS 1.4 documentation.
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self.geometry_operators = {
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# The "&<" operator returns true if A's bounding box overlaps or
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# is to the left of B's bounding box.
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'overlaps_left': PostGISOperator('&<'),
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# The "&>" operator returns true if A's bounding box overlaps or
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# is to the right of B's bounding box.
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'overlaps_right': PostGISOperator('&>'),
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# The "<<" operator returns true if A's bounding box is strictly
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# to the left of B's bounding box.
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'left': PostGISOperator('<<'),
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# The ">>" operator returns true if A's bounding box is strictly
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# to the right of B's bounding box.
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'right': PostGISOperator('>>'),
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# The "&<|" operator returns true if A's bounding box overlaps or
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# is below B's bounding box.
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'overlaps_below': PostGISOperator('&<|'),
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# The "|&>" operator returns true if A's bounding box overlaps or
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# is above B's bounding box.
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'overlaps_above': PostGISOperator('|&>'),
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# The "<<|" operator returns true if A's bounding box is strictly
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# below B's bounding box.
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'strictly_below': PostGISOperator('<<|'),
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# The "|>>" operator returns true if A's bounding box is strictly
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# above B's bounding box.
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'strictly_above': PostGISOperator('|>>'),
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# The "~=" operator is the "same as" operator. It tests actual
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# geometric equality of two features. So if A and B are the same feature,
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# vertex-by-vertex, the operator returns true.
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'same_as': PostGISOperator('~='),
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'exact': PostGISOperator('~='),
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# The "@" operator returns true if A's bounding box is completely contained
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# by B's bounding box.
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'contained': PostGISOperator('@'),
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# The "~" operator returns true if A's bounding box completely contains
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# by B's bounding box.
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'bbcontains': PostGISOperator('~'),
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# The "&&" operator returns true if A's bounding box overlaps
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# B's bounding box.
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'bboverlaps': PostGISOperator('&&'),
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}
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self.geometry_functions = {
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'equals': PostGISFunction(prefix, 'Equals'),
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'disjoint': PostGISFunction(prefix, 'Disjoint'),
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'touches': PostGISFunction(prefix, 'Touches'),
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'crosses': PostGISFunction(prefix, 'Crosses'),
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'within': PostGISFunction(prefix, 'Within'),
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'overlaps': PostGISFunction(prefix, 'Overlaps'),
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'contains': PostGISFunction(prefix, 'Contains'),
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'intersects': PostGISFunction(prefix, 'Intersects'),
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'relate': (PostGISRelate, six.string_types),
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'coveredby': PostGISFunction(prefix, 'CoveredBy'),
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'covers': PostGISFunction(prefix, 'Covers'),
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'contains_properly': PostGISFunction(prefix, 'ContainsProperly'),
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}
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# Valid distance types and substitutions
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dtypes = (Decimal, Distance, float) + six.integer_types
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def get_dist_ops(operator):
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"Returns operations for both regular and spherical distances."
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return {'cartesian': PostGISDistance(prefix, operator),
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'sphere': PostGISSphereDistance(prefix, operator),
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'spheroid': PostGISSpheroidDistance(prefix, operator),
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}
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self.distance_functions = {
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'distance_gt': (get_dist_ops('>'), dtypes),
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'distance_gte': (get_dist_ops('>='), dtypes),
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'distance_lt': (get_dist_ops('<'), dtypes),
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'distance_lte': (get_dist_ops('<='), dtypes),
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'dwithin': (PostGISFunctionParam(prefix, 'DWithin'), dtypes)
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}
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# Adding the distance functions to the geometries lookup.
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self.geometry_functions.update(self.distance_functions)
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# Only a subset of the operators and functions are available
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# for the geography type.
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self.geography_functions = self.distance_functions.copy()
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self.geography_functions.update({
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'coveredby': self.geometry_functions['coveredby'],
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'covers': self.geometry_functions['covers'],
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'intersects': self.geometry_functions['intersects'],
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})
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self.geography_operators = {
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'bboverlaps': PostGISOperator('&&'),
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}
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# Creating a dictionary lookup of all GIS terms for PostGIS.
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self.gis_terms = {'isnull'}
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self.gis_terms.update(self.geometry_operators)
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self.gis_terms.update(self.geometry_functions)
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self.area = prefix + 'Area'
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self.bounding_circle = prefix + 'MinimumBoundingCircle'
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@ -452,95 +364,6 @@ class PostGISOperations(DatabaseOperations, BaseSpatialOperations):
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else:
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raise Exception('Could not determine PROJ.4 version from PostGIS.')
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def num_params(self, lookup_type, num_param):
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"""
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Helper routine that returns a boolean indicating whether the number of
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parameters is correct for the lookup type.
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"""
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def exactly_two(np):
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return np == 2
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def two_to_three(np):
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return np >= 2 and np <= 3
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if (lookup_type in self.distance_functions and
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lookup_type != 'dwithin'):
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return two_to_three(num_param)
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else:
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return exactly_two(num_param)
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def spatial_lookup_sql(self, lvalue, lookup_type, value, field, qn):
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"""
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Constructs spatial SQL from the given lookup value tuple a
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(alias, col, db_type), the lookup type string, lookup value, and
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the geometry field.
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"""
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geo_col, db_type = lvalue
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if lookup_type in self.geometry_operators:
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if field.geography and lookup_type not in self.geography_operators:
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raise ValueError('PostGIS geography does not support the '
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'"%s" lookup.' % lookup_type)
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# Handling a PostGIS operator.
|
||||
op = self.geometry_operators[lookup_type]
|
||||
return op.as_sql(geo_col, self.get_geom_placeholder(field, value))
|
||||
elif lookup_type in self.geometry_functions:
|
||||
if field.geography and lookup_type not in self.geography_functions:
|
||||
raise ValueError('PostGIS geography type does not support the '
|
||||
'"%s" lookup.' % lookup_type)
|
||||
|
||||
# See if a PostGIS geometry function matches the lookup type.
|
||||
tmp = self.geometry_functions[lookup_type]
|
||||
|
||||
# Lookup types that are tuples take tuple arguments, e.g., 'relate' and
|
||||
# distance lookups.
|
||||
if isinstance(tmp, tuple):
|
||||
# First element of tuple is the PostGISOperation instance, and the
|
||||
# second element is either the type or a tuple of acceptable types
|
||||
# that may passed in as further parameters for the lookup type.
|
||||
op, arg_type = tmp
|
||||
|
||||
# Ensuring that a tuple _value_ was passed in from the user
|
||||
if not isinstance(value, (tuple, list)):
|
||||
raise ValueError('Tuple required for `%s` lookup type.' % lookup_type)
|
||||
|
||||
# Geometry is first element of lookup tuple.
|
||||
geom = value[0]
|
||||
|
||||
# Number of valid tuple parameters depends on the lookup type.
|
||||
nparams = len(value)
|
||||
if not self.num_params(lookup_type, nparams):
|
||||
raise ValueError('Incorrect number of parameters given for `%s` lookup type.' % lookup_type)
|
||||
|
||||
# Ensuring the argument type matches what we expect.
|
||||
if not isinstance(value[1], arg_type):
|
||||
raise ValueError('Argument type should be %s, got %s instead.' % (arg_type, type(value[1])))
|
||||
|
||||
# For lookup type `relate`, the op instance is not yet created (has
|
||||
# to be instantiated here to check the pattern parameter).
|
||||
if lookup_type == 'relate':
|
||||
op = op(self.geom_func_prefix, value[1])
|
||||
elif lookup_type in self.distance_functions and lookup_type != 'dwithin':
|
||||
if not field.geography and field.geodetic(self.connection):
|
||||
# Setting up the geodetic operation appropriately.
|
||||
if nparams == 3 and value[2] == 'spheroid':
|
||||
op = op['spheroid']
|
||||
else:
|
||||
op = op['sphere']
|
||||
else:
|
||||
op = op['cartesian']
|
||||
else:
|
||||
op = tmp
|
||||
geom = value
|
||||
|
||||
# Calling the `as_sql` function on the operation instance.
|
||||
return op.as_sql(geo_col, self.get_geom_placeholder(field, geom))
|
||||
|
||||
elif lookup_type == 'isnull':
|
||||
# Handling 'isnull' lookup type
|
||||
return "%s IS %sNULL" % (geo_col, ('' if value else 'NOT ')), []
|
||||
|
||||
raise TypeError("Got invalid lookup_type: %s" % repr(lookup_type))
|
||||
|
||||
def spatial_aggregate_sql(self, agg):
|
||||
"""
|
||||
Returns the spatial aggregate SQL template and function for the
|
||||
|
|
|
|||
|
|
@ -1,9 +1,8 @@
|
|||
import re
|
||||
import sys
|
||||
from decimal import Decimal
|
||||
|
||||
from django.contrib.gis.db.backends.base import BaseSpatialOperations
|
||||
from django.contrib.gis.db.backends.utils import SpatialOperation, SpatialFunction
|
||||
from django.contrib.gis.db.backends.utils import SpatialOperator
|
||||
from django.contrib.gis.db.backends.spatialite.adapter import SpatiaLiteAdapter
|
||||
from django.contrib.gis.geometry.backend import Geometry
|
||||
from django.contrib.gis.measure import Distance
|
||||
|
|
@ -14,52 +13,6 @@ from django.utils import six
|
|||
from django.utils.functional import cached_property
|
||||
|
||||
|
||||
class SpatiaLiteOperator(SpatialOperation):
|
||||
"For SpatiaLite operators (e.g. `&&`, `~`)."
|
||||
def __init__(self, operator):
|
||||
super(SpatiaLiteOperator, self).__init__(operator=operator)
|
||||
|
||||
|
||||
class SpatiaLiteFunction(SpatialFunction):
|
||||
"For SpatiaLite function calls."
|
||||
def __init__(self, function, **kwargs):
|
||||
super(SpatiaLiteFunction, self).__init__(function, **kwargs)
|
||||
|
||||
|
||||
class SpatiaLiteFunctionParam(SpatiaLiteFunction):
|
||||
"For SpatiaLite functions that take another parameter."
|
||||
sql_template = '%(function)s(%(geo_col)s, %(geometry)s, %%s)'
|
||||
|
||||
|
||||
class SpatiaLiteDistance(SpatiaLiteFunction):
|
||||
"For SpatiaLite distance operations."
|
||||
dist_func = 'Distance'
|
||||
sql_template = '%(function)s(%(geo_col)s, %(geometry)s) %(operator)s %%s'
|
||||
|
||||
def __init__(self, operator):
|
||||
super(SpatiaLiteDistance, self).__init__(self.dist_func,
|
||||
operator=operator)
|
||||
|
||||
|
||||
class SpatiaLiteRelate(SpatiaLiteFunctionParam):
|
||||
"For SpatiaLite Relate(<geom>, <pattern>) calls."
|
||||
pattern_regex = re.compile(r'^[012TF\*]{9}$')
|
||||
|
||||
def __init__(self, pattern):
|
||||
if not self.pattern_regex.match(pattern):
|
||||
raise ValueError('Invalid intersection matrix pattern "%s".' % pattern)
|
||||
super(SpatiaLiteRelate, self).__init__('Relate')
|
||||
|
||||
|
||||
# Valid distance types and substitutions
|
||||
dtypes = (Decimal, Distance, float) + six.integer_types
|
||||
|
||||
|
||||
def get_dist_ops(operator):
|
||||
"Returns operations for regular distances; spherical distances are not currently supported."
|
||||
return (SpatiaLiteDistance(operator),)
|
||||
|
||||
|
||||
class SpatiaLiteOperations(DatabaseOperations, BaseSpatialOperations):
|
||||
compiler_module = 'django.contrib.gis.db.models.sql.compiler'
|
||||
name = 'spatialite'
|
||||
|
|
@ -101,42 +54,32 @@ class SpatiaLiteOperations(DatabaseOperations, BaseSpatialOperations):
|
|||
from_wkb = 'GeomFromWKB'
|
||||
select = 'AsText(%s)'
|
||||
|
||||
geometry_functions = {
|
||||
'equals': SpatiaLiteFunction('Equals'),
|
||||
'disjoint': SpatiaLiteFunction('Disjoint'),
|
||||
'touches': SpatiaLiteFunction('Touches'),
|
||||
'crosses': SpatiaLiteFunction('Crosses'),
|
||||
'within': SpatiaLiteFunction('Within'),
|
||||
'overlaps': SpatiaLiteFunction('Overlaps'),
|
||||
'contains': SpatiaLiteFunction('Contains'),
|
||||
'intersects': SpatiaLiteFunction('Intersects'),
|
||||
'relate': (SpatiaLiteRelate, six.string_types),
|
||||
gis_operators = {
|
||||
'equals': SpatialOperator(func='Equals'),
|
||||
'disjoint': SpatialOperator(func='Disjoint'),
|
||||
'touches': SpatialOperator(func='Touches'),
|
||||
'crosses': SpatialOperator(func='Crosses'),
|
||||
'within': SpatialOperator(func='Within'),
|
||||
'overlaps': SpatialOperator(func='Overlaps'),
|
||||
'contains': SpatialOperator(func='Contains'),
|
||||
'intersects': SpatialOperator(func='Intersects'),
|
||||
'relate': SpatialOperator(func='Relate'),
|
||||
# Returns true if B's bounding box completely contains A's bounding box.
|
||||
'contained': SpatiaLiteFunction('MbrWithin'),
|
||||
'contained': SpatialOperator(func='MbrWithin'),
|
||||
# Returns true if A's bounding box completely contains B's bounding box.
|
||||
'bbcontains': SpatiaLiteFunction('MbrContains'),
|
||||
'bbcontains': SpatialOperator(func='MbrContains'),
|
||||
# Returns true if A's bounding box overlaps B's bounding box.
|
||||
'bboverlaps': SpatiaLiteFunction('MbrOverlaps'),
|
||||
'bboverlaps': SpatialOperator(func='MbrOverlaps'),
|
||||
# These are implemented here as synonyms for Equals
|
||||
'same_as': SpatiaLiteFunction('Equals'),
|
||||
'exact': SpatiaLiteFunction('Equals'),
|
||||
'same_as': SpatialOperator(func='Equals'),
|
||||
'exact': SpatialOperator(func='Equals'),
|
||||
|
||||
'distance_gt': SpatialOperator(func='Distance', op='>'),
|
||||
'distance_gte': SpatialOperator(func='Distance', op='>='),
|
||||
'distance_lt': SpatialOperator(func='Distance', op='<'),
|
||||
'distance_lte': SpatialOperator(func='Distance', op='<='),
|
||||
}
|
||||
|
||||
distance_functions = {
|
||||
'distance_gt': (get_dist_ops('>'), dtypes),
|
||||
'distance_gte': (get_dist_ops('>='), dtypes),
|
||||
'distance_lt': (get_dist_ops('<'), dtypes),
|
||||
'distance_lte': (get_dist_ops('<='), dtypes),
|
||||
}
|
||||
geometry_functions.update(distance_functions)
|
||||
|
||||
def __init__(self, connection):
|
||||
super(DatabaseOperations, self).__init__(connection)
|
||||
|
||||
# Creating the GIS terms dictionary.
|
||||
self.gis_terms = {'isnull'}
|
||||
self.gis_terms.update(self.geometry_functions)
|
||||
|
||||
@cached_property
|
||||
def spatial_version(self):
|
||||
"""Determine the version of the SpatiaLite library."""
|
||||
|
|
@ -316,58 +259,6 @@ class SpatiaLiteOperations(DatabaseOperations, BaseSpatialOperations):
|
|||
sql_function = getattr(self, agg_name)
|
||||
return sql_template, sql_function
|
||||
|
||||
def spatial_lookup_sql(self, lvalue, lookup_type, value, field, qn):
|
||||
"""
|
||||
Returns the SpatiaLite-specific SQL for the given lookup value
|
||||
[a tuple of (alias, column, db_type)], lookup type, lookup
|
||||
value, the model field, and the quoting function.
|
||||
"""
|
||||
geo_col, db_type = lvalue
|
||||
|
||||
if lookup_type in self.geometry_functions:
|
||||
# See if a SpatiaLite geometry function matches the lookup type.
|
||||
tmp = self.geometry_functions[lookup_type]
|
||||
|
||||
# Lookup types that are tuples take tuple arguments, e.g., 'relate' and
|
||||
# distance lookups.
|
||||
if isinstance(tmp, tuple):
|
||||
# First element of tuple is the SpatiaLiteOperation instance, and the
|
||||
# second element is either the type or a tuple of acceptable types
|
||||
# that may passed in as further parameters for the lookup type.
|
||||
op, arg_type = tmp
|
||||
|
||||
# Ensuring that a tuple _value_ was passed in from the user
|
||||
if not isinstance(value, (tuple, list)):
|
||||
raise ValueError('Tuple required for `%s` lookup type.' % lookup_type)
|
||||
|
||||
# Geometry is first element of lookup tuple.
|
||||
geom = value[0]
|
||||
|
||||
# Number of valid tuple parameters depends on the lookup type.
|
||||
if len(value) != 2:
|
||||
raise ValueError('Incorrect number of parameters given for `%s` lookup type.' % lookup_type)
|
||||
|
||||
# Ensuring the argument type matches what we expect.
|
||||
if not isinstance(value[1], arg_type):
|
||||
raise ValueError('Argument type should be %s, got %s instead.' % (arg_type, type(value[1])))
|
||||
|
||||
# For lookup type `relate`, the op instance is not yet created (has
|
||||
# to be instantiated here to check the pattern parameter).
|
||||
if lookup_type == 'relate':
|
||||
op = op(value[1])
|
||||
elif lookup_type in self.distance_functions:
|
||||
op = op[0]
|
||||
else:
|
||||
op = tmp
|
||||
geom = value
|
||||
# Calling the `as_sql` function on the operation instance.
|
||||
return op.as_sql(geo_col, self.get_geom_placeholder(field, geom))
|
||||
elif lookup_type == 'isnull':
|
||||
# Handling 'isnull' lookup type
|
||||
return "%s IS %sNULL" % (geo_col, ('' if value else 'NOT ')), []
|
||||
|
||||
raise TypeError("Got invalid lookup_type: %s" % repr(lookup_type))
|
||||
|
||||
# Routines for getting the OGC-compliant models.
|
||||
def geometry_columns(self):
|
||||
from django.contrib.gis.db.backends.spatialite.models import SpatialiteGeometryColumns
|
||||
|
|
|
|||
|
|
@ -4,43 +4,24 @@ backends.
|
|||
"""
|
||||
|
||||
|
||||
class SpatialOperation(object):
|
||||
class SpatialOperator(object):
|
||||
"""
|
||||
Base class for generating spatial SQL.
|
||||
Class encapsulating the behavior specific to a GIS operation (used by lookups).
|
||||
"""
|
||||
sql_template = '%(geo_col)s %(operator)s %(geometry)s'
|
||||
sql_template = None
|
||||
|
||||
def __init__(self, function='', operator='', result='', **kwargs):
|
||||
self.function = function
|
||||
self.operator = operator
|
||||
self.result = result
|
||||
self.extra = kwargs
|
||||
def __init__(self, op=None, func=None):
|
||||
self.op = op
|
||||
self.func = func
|
||||
|
||||
def as_sql(self, geo_col, geometry='%s'):
|
||||
return self.sql_template % self.params(geo_col, geometry), []
|
||||
@property
|
||||
def default_template(self):
|
||||
if self.func:
|
||||
return '%(func)s(%(lhs)s, %(rhs)s)'
|
||||
else:
|
||||
return '%(lhs)s %(op)s %(rhs)s'
|
||||
|
||||
def params(self, geo_col, geometry):
|
||||
params = {'function': self.function,
|
||||
'geo_col': geo_col,
|
||||
'geometry': geometry,
|
||||
'operator': self.operator,
|
||||
'result': self.result,
|
||||
}
|
||||
params.update(self.extra)
|
||||
return params
|
||||
|
||||
|
||||
class SpatialFunction(SpatialOperation):
|
||||
"""
|
||||
Base class for generating spatial SQL related to a function.
|
||||
"""
|
||||
sql_template = '%(function)s(%(geo_col)s, %(geometry)s)'
|
||||
|
||||
def __init__(self, func, result='', operator='', **kwargs):
|
||||
# Getting the function prefix.
|
||||
default = {'function': func,
|
||||
'operator': operator,
|
||||
'result': result
|
||||
}
|
||||
kwargs.update(default)
|
||||
super(SpatialFunction, self).__init__(**kwargs)
|
||||
def as_sql(self, connection, lookup, template_params, sql_params):
|
||||
sql_template = self.sql_template or lookup.sql_template or self.default_template
|
||||
template_params.update({'op': self.op, 'func': self.func})
|
||||
return sql_template % template_params, sql_params
|
||||
|
|
|
|||
|
|
@ -1,15 +0,0 @@
|
|||
from django.db.models.sql.constants import QUERY_TERMS
|
||||
|
||||
GIS_LOOKUPS = {
|
||||
'bbcontains', 'bboverlaps', 'contained', 'contains',
|
||||
'contains_properly', 'coveredby', 'covers', 'crosses', 'disjoint',
|
||||
'distance_gt', 'distance_gte', 'distance_lt', 'distance_lte',
|
||||
'dwithin', 'equals', 'exact',
|
||||
'intersects', 'overlaps', 'relate', 'same_as', 'touches', 'within',
|
||||
'left', 'right', 'overlaps_left', 'overlaps_right',
|
||||
'overlaps_above', 'overlaps_below',
|
||||
'strictly_above', 'strictly_below'
|
||||
}
|
||||
ALL_TERMS = GIS_LOOKUPS | QUERY_TERMS
|
||||
|
||||
__all__ = ['ALL_TERMS', 'GIS_LOOKUPS']
|
||||
|
|
@ -2,8 +2,7 @@ from django.db.models.fields import Field
|
|||
from django.db.models.sql.expressions import SQLEvaluator
|
||||
from django.utils.translation import ugettext_lazy as _
|
||||
from django.contrib.gis import forms
|
||||
from django.contrib.gis.db.models.constants import GIS_LOOKUPS
|
||||
from django.contrib.gis.db.models.lookups import GISLookup
|
||||
from django.contrib.gis.db.models.lookups import gis_lookups
|
||||
from django.contrib.gis.db.models.proxy import GeometryProxy
|
||||
from django.contrib.gis.geometry.backend import Geometry, GeometryException
|
||||
from django.utils import six
|
||||
|
|
@ -243,16 +242,15 @@ class GeometryField(Field):
|
|||
parameters into the correct units for the coordinate system of the
|
||||
field.
|
||||
"""
|
||||
if lookup_type in connection.ops.gis_terms:
|
||||
# special case for isnull lookup
|
||||
if lookup_type == 'isnull':
|
||||
return []
|
||||
|
||||
# special case for isnull lookup
|
||||
if lookup_type == 'isnull':
|
||||
return []
|
||||
elif lookup_type in self.class_lookups:
|
||||
# Populating the parameters list, and wrapping the Geometry
|
||||
# with the Adapter of the spatial backend.
|
||||
if isinstance(value, (tuple, list)):
|
||||
params = [connection.ops.Adapter(value[0])]
|
||||
if lookup_type in connection.ops.distance_functions:
|
||||
if self.class_lookups[lookup_type].distance:
|
||||
# Getting the distance parameter in the units of the field.
|
||||
params += self.get_distance(value[1:], lookup_type, connection)
|
||||
elif lookup_type in connection.ops.truncate_params:
|
||||
|
|
@ -291,9 +289,9 @@ class GeometryField(Field):
|
|||
"""
|
||||
return connection.ops.get_geom_placeholder(self, value)
|
||||
|
||||
for lookup_name in GIS_LOOKUPS:
|
||||
lookup = type(lookup_name, (GISLookup,), {'lookup_name': lookup_name})
|
||||
GeometryField.register_lookup(lookup)
|
||||
|
||||
for klass in gis_lookups.values():
|
||||
GeometryField.register_lookup(klass)
|
||||
|
||||
|
||||
# The OpenGIS Geometry Type Fields
|
||||
|
|
|
|||
|
|
@ -1,10 +1,20 @@
|
|||
from __future__ import unicode_literals
|
||||
import re
|
||||
|
||||
from django.db.models.constants import LOOKUP_SEP
|
||||
from django.db.models.fields import FieldDoesNotExist
|
||||
from django.db.models.lookups import Lookup
|
||||
from django.db.models.sql.expressions import SQLEvaluator
|
||||
from django.utils import six
|
||||
|
||||
gis_lookups = {}
|
||||
|
||||
|
||||
class GISLookup(Lookup):
|
||||
sql_template = None
|
||||
transform_func = None
|
||||
distance = False
|
||||
|
||||
@classmethod
|
||||
def _check_geo_field(cls, opts, lookup):
|
||||
"""
|
||||
|
|
@ -45,10 +55,19 @@ class GISLookup(Lookup):
|
|||
else:
|
||||
return False
|
||||
|
||||
def as_sql(self, qn, connection):
|
||||
# We use the same approach as was used by GeoWhereNode. It would
|
||||
# be a good idea to upgrade GIS to use similar code that is used
|
||||
# for other lookups.
|
||||
def get_db_prep_lookup(self, value, connection):
|
||||
# get_db_prep_lookup is called by process_rhs from super class
|
||||
if isinstance(value, (tuple, list)):
|
||||
# First param is assumed to be the geometric object
|
||||
params = [connection.ops.Adapter(value[0])] + list(value)[1:]
|
||||
else:
|
||||
params = [connection.ops.Adapter(value)]
|
||||
return ('%s', params)
|
||||
|
||||
def process_rhs(self, qn, connection):
|
||||
rhs, rhs_params = super(GISLookup, self).process_rhs(qn, connection)
|
||||
|
||||
geom = self.rhs
|
||||
if isinstance(self.rhs, SQLEvaluator):
|
||||
# Make sure the F Expression destination field exists, and
|
||||
# set an `srid` attribute with the same as that of the
|
||||
|
|
@ -57,13 +76,256 @@ class GISLookup(Lookup):
|
|||
if not geo_fld:
|
||||
raise ValueError('No geographic field found in expression.')
|
||||
self.rhs.srid = geo_fld.srid
|
||||
db_type = self.lhs.output_field.db_type(connection=connection)
|
||||
params = self.lhs.output_field.get_db_prep_lookup(
|
||||
self.lookup_name, self.rhs, connection=connection)
|
||||
lhs_sql, lhs_params = self.process_lhs(qn, connection)
|
||||
# lhs_params not currently supported.
|
||||
assert not lhs_params
|
||||
data = (lhs_sql, db_type)
|
||||
spatial_sql, spatial_params = connection.ops.spatial_lookup_sql(
|
||||
data, self.lookup_name, self.rhs, self.lhs.output_field, qn)
|
||||
return spatial_sql, spatial_params + params
|
||||
elif isinstance(self.rhs, (list, tuple)):
|
||||
geom = self.rhs[0]
|
||||
|
||||
rhs = connection.ops.get_geom_placeholder(self.lhs.source, geom)
|
||||
return rhs, rhs_params
|
||||
|
||||
def as_sql(self, qn, connection):
|
||||
lhs_sql, sql_params = self.process_lhs(qn, connection)
|
||||
rhs_sql, rhs_params = self.process_rhs(qn, connection)
|
||||
sql_params.extend(rhs_params)
|
||||
|
||||
template_params = {'lhs': lhs_sql, 'rhs': rhs_sql}
|
||||
backend_op = connection.ops.gis_operators[self.lookup_name]
|
||||
return backend_op.as_sql(connection, self, template_params, sql_params)
|
||||
|
||||
|
||||
# ------------------
|
||||
# Geometry operators
|
||||
# ------------------
|
||||
|
||||
class OverlapsLeftLookup(GISLookup):
|
||||
"""
|
||||
The overlaps_left operator returns true if A's bounding box overlaps or is to the
|
||||
left of B's bounding box.
|
||||
"""
|
||||
lookup_name = 'overlaps_left'
|
||||
gis_lookups['overlaps_left'] = OverlapsLeftLookup
|
||||
|
||||
|
||||
class OverlapsRightLookup(GISLookup):
|
||||
"""
|
||||
The 'overlaps_right' operator returns true if A's bounding box overlaps or is to the
|
||||
right of B's bounding box.
|
||||
"""
|
||||
lookup_name = 'overlaps_right'
|
||||
gis_lookups['overlaps_right'] = OverlapsRightLookup
|
||||
|
||||
|
||||
class OverlapsBelowLookup(GISLookup):
|
||||
"""
|
||||
The 'overlaps_below' operator returns true if A's bounding box overlaps or is below
|
||||
B's bounding box.
|
||||
"""
|
||||
lookup_name = 'overlaps_below'
|
||||
gis_lookups['overlaps_below'] = OverlapsBelowLookup
|
||||
|
||||
|
||||
class OverlapsAboveLookup(GISLookup):
|
||||
"""
|
||||
The 'overlaps_above' operator returns true if A's bounding box overlaps or is above
|
||||
B's bounding box.
|
||||
"""
|
||||
lookup_name = 'overlaps_above'
|
||||
gis_lookups['overlaps_above'] = OverlapsAboveLookup
|
||||
|
||||
|
||||
class LeftLookup(GISLookup):
|
||||
"""
|
||||
The 'left' operator returns true if A's bounding box is strictly to the left
|
||||
of B's bounding box.
|
||||
"""
|
||||
lookup_name = 'left'
|
||||
gis_lookups['left'] = LeftLookup
|
||||
|
||||
|
||||
class RightLookup(GISLookup):
|
||||
"""
|
||||
The 'right' operator returns true if A's bounding box is strictly to the right
|
||||
of B's bounding box.
|
||||
"""
|
||||
lookup_name = 'right'
|
||||
gis_lookups['right'] = RightLookup
|
||||
|
||||
|
||||
class StrictlyBelowLookup(GISLookup):
|
||||
"""
|
||||
The 'strictly_below' operator returns true if A's bounding box is strictly below B's
|
||||
bounding box.
|
||||
"""
|
||||
lookup_name = 'strictly_below'
|
||||
gis_lookups['strictly_below'] = StrictlyBelowLookup
|
||||
|
||||
|
||||
class StrictlyAboveLookup(GISLookup):
|
||||
"""
|
||||
The 'strictly_above' operator returns true if A's bounding box is strictly above B's
|
||||
bounding box.
|
||||
"""
|
||||
lookup_name = 'strictly_above'
|
||||
gis_lookups['strictly_above'] = StrictlyAboveLookup
|
||||
|
||||
|
||||
class SameAsLookup(GISLookup):
|
||||
"""
|
||||
The "~=" operator is the "same as" operator. It tests actual geometric
|
||||
equality of two features. So if A and B are the same feature,
|
||||
vertex-by-vertex, the operator returns true.
|
||||
"""
|
||||
lookup_name = 'same_as'
|
||||
gis_lookups['same_as'] = SameAsLookup
|
||||
|
||||
|
||||
class ExactLookup(SameAsLookup):
|
||||
# Alias of same_as
|
||||
lookup_name = 'exact'
|
||||
gis_lookups['exact'] = ExactLookup
|
||||
|
||||
|
||||
class BBContainsLookup(GISLookup):
|
||||
"""
|
||||
The 'bbcontains' operator returns true if A's bounding box completely contains
|
||||
by B's bounding box.
|
||||
"""
|
||||
lookup_name = 'bbcontains'
|
||||
gis_lookups['bbcontains'] = BBContainsLookup
|
||||
|
||||
|
||||
class BBOverlapsLookup(GISLookup):
|
||||
"""
|
||||
The 'bboverlaps' operator returns true if A's bounding box overlaps B's bounding box.
|
||||
"""
|
||||
lookup_name = 'bboverlaps'
|
||||
gis_lookups['bboverlaps'] = BBOverlapsLookup
|
||||
|
||||
|
||||
class ContainedLookup(GISLookup):
|
||||
"""
|
||||
The 'contained' operator returns true if A's bounding box is completely contained
|
||||
by B's bounding box.
|
||||
"""
|
||||
lookup_name = 'contained'
|
||||
gis_lookups['contained'] = ContainedLookup
|
||||
|
||||
|
||||
# ------------------
|
||||
# Geometry functions
|
||||
# ------------------
|
||||
|
||||
class ContainsLookup(GISLookup):
|
||||
lookup_name = 'contains'
|
||||
gis_lookups['contains'] = ContainsLookup
|
||||
|
||||
|
||||
class ContainsProperlyLookup(GISLookup):
|
||||
lookup_name = 'contains_properly'
|
||||
gis_lookups['contains_properly'] = ContainsProperlyLookup
|
||||
|
||||
|
||||
class CoveredByLookup(GISLookup):
|
||||
lookup_name = 'coveredby'
|
||||
gis_lookups['coveredby'] = CoveredByLookup
|
||||
|
||||
|
||||
class CoversLookup(GISLookup):
|
||||
lookup_name = 'covers'
|
||||
gis_lookups['covers'] = CoversLookup
|
||||
|
||||
|
||||
class CrossesLookup(GISLookup):
|
||||
lookup_name = 'crosses'
|
||||
gis_lookups['crosses'] = CrossesLookup
|
||||
|
||||
|
||||
class DisjointLookup(GISLookup):
|
||||
lookup_name = 'disjoint'
|
||||
gis_lookups['disjoint'] = DisjointLookup
|
||||
|
||||
|
||||
class EqualsLookup(GISLookup):
|
||||
lookup_name = 'equals'
|
||||
gis_lookups['equals'] = EqualsLookup
|
||||
|
||||
|
||||
class IntersectsLookup(GISLookup):
|
||||
lookup_name = 'intersects'
|
||||
gis_lookups['intersects'] = IntersectsLookup
|
||||
|
||||
|
||||
class OverlapsLookup(GISLookup):
|
||||
lookup_name = 'overlaps'
|
||||
gis_lookups['overlaps'] = OverlapsLookup
|
||||
|
||||
|
||||
class RelateLookup(GISLookup):
|
||||
lookup_name = 'relate'
|
||||
sql_template = '%(func)s(%(lhs)s, %(rhs)s, %%s)'
|
||||
pattern_regex = re.compile(r'^[012TF\*]{9}$')
|
||||
|
||||
def get_db_prep_lookup(self, value, connection):
|
||||
if len(value) != 2:
|
||||
raise ValueError('relate must be passed a two-tuple')
|
||||
# Check the pattern argument
|
||||
backend_op = connection.ops.gis_operators[self.lookup_name]
|
||||
if hasattr(backend_op, 'check_relate_argument'):
|
||||
backend_op.check_relate_argument(value[1])
|
||||
else:
|
||||
pattern = value[1]
|
||||
if not isinstance(pattern, six.string_types) or not self.pattern_regex.match(pattern):
|
||||
raise ValueError('Invalid intersection matrix pattern "%s".' % pattern)
|
||||
return super(RelateLookup, self).get_db_prep_lookup(value, connection)
|
||||
gis_lookups['relate'] = RelateLookup
|
||||
|
||||
|
||||
class TouchesLookup(GISLookup):
|
||||
lookup_name = 'touches'
|
||||
gis_lookups['touches'] = TouchesLookup
|
||||
|
||||
|
||||
class WithinLookup(GISLookup):
|
||||
lookup_name = 'within'
|
||||
gis_lookups['within'] = WithinLookup
|
||||
|
||||
|
||||
class DistanceLookupBase(GISLookup):
|
||||
distance = True
|
||||
sql_template = '%(func)s(%(lhs)s, %(rhs)s) %(op)s %%s'
|
||||
|
||||
def get_db_prep_lookup(self, value, connection):
|
||||
if isinstance(value, (tuple, list)):
|
||||
if not 2 <= len(value) <= 3:
|
||||
raise ValueError("2 or 3-element tuple required for '%s' lookup." % self.lookup_name)
|
||||
params = [connection.ops.Adapter(value[0])]
|
||||
# Getting the distance parameter in the units of the field.
|
||||
params += connection.ops.get_distance(self.lhs.output_field, value[1:], self.lookup_name)
|
||||
return ('%s', params)
|
||||
else:
|
||||
return super(DistanceLookupBase, self).get_db_prep_lookup(value, connection)
|
||||
|
||||
|
||||
class DWithinLookup(DistanceLookupBase):
|
||||
lookup_name = 'dwithin'
|
||||
sql_template = '%(func)s(%(lhs)s, %(rhs)s, %%s)'
|
||||
gis_lookups['dwithin'] = DWithinLookup
|
||||
|
||||
|
||||
class DistanceGTLookup(DistanceLookupBase):
|
||||
lookup_name = 'distance_gt'
|
||||
gis_lookups['distance_gt'] = DistanceGTLookup
|
||||
|
||||
|
||||
class DistanceGTELookup(DistanceLookupBase):
|
||||
lookup_name = 'distance_gte'
|
||||
gis_lookups['distance_gte'] = DistanceGTELookup
|
||||
|
||||
|
||||
class DistanceLTLookup(DistanceLookupBase):
|
||||
lookup_name = 'distance_lt'
|
||||
gis_lookups['distance_lt'] = DistanceLTLookup
|
||||
|
||||
|
||||
class DistanceLTELookup(DistanceLookupBase):
|
||||
lookup_name = 'distance_lte'
|
||||
gis_lookups['distance_lte'] = DistanceLTELookup
|
||||
|
|
|
|||
|
|
@ -1,7 +1,7 @@
|
|||
from django.db import connections
|
||||
from django.db.models.query import sql
|
||||
from django.db.models.sql.constants import QUERY_TERMS
|
||||
|
||||
from django.contrib.gis.db.models.constants import ALL_TERMS
|
||||
from django.contrib.gis.db.models.fields import GeometryField
|
||||
from django.contrib.gis.db.models.lookups import GISLookup
|
||||
from django.contrib.gis.db.models.sql import aggregates as gis_aggregates
|
||||
|
|
@ -13,7 +13,7 @@ class GeoQuery(sql.Query):
|
|||
A single spatial SQL query.
|
||||
"""
|
||||
# Overridding the valid query terms.
|
||||
query_terms = ALL_TERMS
|
||||
query_terms = QUERY_TERMS | set(GeometryField.class_lookups.keys())
|
||||
aggregates_module = gis_aggregates
|
||||
|
||||
compiler = 'GeoSQLCompiler'
|
||||
|
|
|
|||
|
|
@ -612,6 +612,9 @@ Miscellaneous
|
|||
:func:`~django.core.urlresolvers.reverse_lazy` now return Unicode strings
|
||||
instead of byte strings.
|
||||
|
||||
* GIS-specific lookups have been refactored to use the
|
||||
:class:`django.db.models.Lookup` API.
|
||||
|
||||
.. _deprecated-features-1.8:
|
||||
|
||||
Features deprecated in 1.8
|
||||
|
|
|
|||
Loading…
Reference in New Issue