Fixed #28654 -- Dropped support for SpatiaLite 4.0.

django/contrib/gis/db/backends/spatialite/base.py

@@ -61,5 +61,4 @@ class DatabaseWrapper(SQLiteDatabaseWrapper):
         with self.cursor() as cursor:
             cursor.execute("PRAGMA table_info(geometry_columns);")
             if cursor.fetchall() == []:
-                arg = "1" if self.features.supports_initspatialmetadata_in_one_transaction else ""
-                cursor.execute("SELECT InitSpatialMetaData(%s)" % arg)
+                cursor.execute("SELECT InitSpatialMetaData(1)")

django/contrib/gis/db/backends/spatialite/features.py

@@ -8,13 +8,6 @@ from django.utils.functional import cached_property
 class DatabaseFeatures(BaseSpatialFeatures, SQLiteDatabaseFeatures):
     supports_3d_storage = True
 
-    @cached_property
-    def supports_initspatialmetadata_in_one_transaction(self):
-        # SpatiaLite 4.1+ support initializing all metadata in one transaction
-        # which can result in a significant performance improvement when
-        # creating the database.
-        return self.connection.ops.spatial_version >= (4, 1, 0)
-
     @cached_property
     def supports_area_geodetic(self):
         return bool(self.connection.ops.lwgeom_version())

django/contrib/gis/db/backends/spatialite/introspection.py

@@ -41,9 +41,9 @@ class SpatiaLiteIntrospection(DatabaseIntrospection):
             # from OGC geom type name to Django field.
             ogr_type = row[2]
             if isinstance(ogr_type, int) and ogr_type > 1000:
-                # SpatiaLite versions >= 4 use the new SFSQL 1.2 offsets
-                # 1000 (Z), 2000 (M), and 3000 (ZM) to indicate the presence of
-                # higher dimensional coordinates (M not yet supported by Django).
+                # SpatiaLite uses SFSQL 1.2 offsets 1000 (Z), 2000 (M), and
+                # 3000 (ZM) to indicate the presence of higher dimensional
+                # coordinates (M not yet supported by Django).
                 ogr_type = ogr_type % 1000 + OGRGeomType.wkb25bit
             field_type = OGRGeomType(ogr_type).django
 

django/contrib/gis/db/backends/spatialite/operations.py

 """
 SQL functions reference lists:
-https://web.archive.org/web/20130407175746/https://www.gaia-gis.it/gaia-sins/spatialite-sql-4.0.0.html
 https://www.gaia-gis.it/gaia-sins/spatialite-sql-4.2.1.html
 """
 from django.contrib.gis.db.backends.base.operations import (
@@ -96,8 +95,8 @@ class SpatiaLiteOperations(BaseSpatialOperations, DatabaseOperations):
                     self.connection.settings_dict['NAME'],
                 )
             ) from exc
-        if version < (4, 0, 0):
-            raise ImproperlyConfigured('GeoDjango only supports SpatiaLite versions 4.0.0 and above.')
+        if version < (4, 1, 0):
+            raise ImproperlyConfigured('GeoDjango only supports SpatiaLite versions 4.1.0 and above.')
         return version
 
     def convert_extent(self, box):

docs/ref/contrib/gis/install/geolibs.txt

@@ -13,7 +13,7 @@ Program                   Description                           Required
 :doc:`GDAL <../gdal>`     Geospatial Data Abstraction Library   Yes                               2.2, 2.1, 2.0, 1.11, 1.10, 1.9
 :doc:`GeoIP <../geoip2>`  IP-based geolocation library          No                                2
 `PostGIS`__               Spatial extensions for PostgreSQL     Yes (PostgreSQL only)             2.3, 2.2, 2.1
-`SpatiaLite`__            Spatial extensions for SQLite         Yes (SQLite only)                 4.3, 4.2, 4.1, 4.0
+`SpatiaLite`__            Spatial extensions for SQLite         Yes (SQLite only)                 4.3, 4.2, 4.1
 ========================  ====================================  ================================  ===================================
 
 Note that older or more recent versions of these libraries *may* also work
@@ -32,7 +32,6 @@ totally fine with GeoDjango. Your mileage may vary.
     PostGIS 2.1.0 2013-08-17
     PostGIS 2.2.0 2015-10-17
     PostGIS 2.3.0 2016-09-26
-    SpatiaLite 4.0.0 2012-11-25
     SpatiaLite 4.1.0 2013-06-04
     SpatiaLite 4.2.0 2014-07-25
     SpatiaLite 4.3.0 2015-09-07

docs/ref/contrib/gis/install/index.txt

@@ -61,7 +61,7 @@ Database            Library Requirements            Supported Versions  Notes
 PostgreSQL          GEOS, GDAL, PROJ.4, PostGIS     9.4+                Requires PostGIS.
 MySQL               GEOS, GDAL                      5.6+                Not OGC-compliant; :ref:`limited functionality <mysql-spatial-limitations>`.
 Oracle              GEOS, GDAL                      12.1+               XE not supported.
-SQLite              GEOS, GDAL, PROJ.4, SpatiaLite  3.6.+               Requires SpatiaLite 4.0+
+SQLite              GEOS, GDAL, PROJ.4, SpatiaLite  3.6.+               Requires SpatiaLite 4.1+
 ==================  ==============================  ==================  =========================================
 
 See also `this comparison matrix`__ on the OSGeo Wiki for

docs/releases/2.1.txt

@@ -200,6 +200,11 @@ Database backend API
 
 * ...
 
+:mod:`django.contrib.gis`
+-------------------------
+
+* Support for SpatiaLite 4.0 is removed.
+
 Dropped support for MySQL 5.5
 -----------------------------