17 lines
757 B
Python
17 lines
757 B
Python
from django.contrib.gis.db.backends.base.features import BaseSpatialFeatures
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from django.db.backends.sqlite3.features import DatabaseFeatures as SQLiteDatabaseFeatures
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from django.utils.functional import cached_property
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class DatabaseFeatures(BaseSpatialFeatures, SQLiteDatabaseFeatures):
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supports_distance_geodetic = False
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# SpatiaLite can only count vertices in LineStrings
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supports_num_points_poly = False
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@cached_property
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def supports_initspatialmetadata_in_one_transaction(self):
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# SpatiaLite 4.1+ support initializing all metadata in one transaction
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# which can result in a significant performance improvement when
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# creating the database.
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return self.connection.ops.spatial_version >= (4, 1, 0)
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