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Fixed #25853 -- Added support for GeoHash function on SpatiaLite.

This commit is contained in:
Sergey Fedoseev 2015-12-04 09:52:16 +05:00 committed by Tim Graham
parent b61eab18f7
commit 25f5b5c19d
4 changed files with 16 additions and 4 deletions
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9
django/contrib/gis/db/backends/spatialite/operations.py
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@ -1,6 +1,7 @@
"""
SQL functions reference lists:
http://www.gaia-gis.it/spatialite-3.0.0-BETA/spatialite-sql-3.0.0.html
https://web.archive.org/web/20130407175746/http://www.gaia-gis.it/gaia-sins/spatialite-sql-4.0.0.html
http://www.gaia-gis.it/gaia-sins/spatialite-sql-4.2.1.html
"""
import re
@ -95,11 +96,13 @@ class SpatiaLiteOperations(BaseSpatialOperations, DatabaseOperations):
@cached_property
def unsupported_functions(self):
unsupported = {'BoundingCircle', 'ForceRHR', 'GeoHash', 'MemSize'}
unsupported = {'BoundingCircle', 'ForceRHR', 'MemSize'}
if self.spatial_version < (3, 1, 0):
unsupported.add('SnapToGrid')
if self.spatial_version < (4, 0, 0):
unsupported.update({'Perimeter', 'Reverse'})
elif not self.lwgeom_version():
unsupported.add('GeoHash')
return unsupported
@cached_property
@ -212,6 +215,10 @@ class SpatiaLiteOperations(BaseSpatialOperations, DatabaseOperations):
"Returns the version of the PROJ.4 library used by SpatiaLite."
return self._get_spatialite_func('proj4_version()')
def lwgeom_version(self):
"""Return the version of LWGEOM library used by SpatiaLite."""
return self._get_spatialite_func('lwgeom_version()')
def spatialite_version(self):
"Returns the SpatiaLite library version as a string."
return self._get_spatialite_func('spatialite_version()')

2
docs/ref/contrib/gis/db-api.txt
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@ -316,7 +316,7 @@ Function PostGIS Oracle MySQL SpatiaLite
:class:`Distance` X X X (≥ 5.6.1) X
:class:`Envelope` X X X
:class:`ForceRHR` X
:class:`GeoHash` X
:class:`GeoHash` X X (≥ 4.0, LWGEOM)
:class:`Intersection` X X X (≥ 5.6.1) X
:class:`Length` X X X X
:class:`MemSize` X

6
docs/ref/contrib/gis/functions.txt
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@ -266,11 +266,15 @@ GeoHash
.. class:: GeoHash(expression, **extra)
*Availability*: PostGIS
*Availability*: PostGIS, SpatiaLite (≥ 4.0, LWGEOM)
Accepts a single geographic field or expression and returns a `GeoHash`__
representation of the geometry.
.. versionchanged:: 1.10
SpatiaLite support was added.
__ https://en.wikipedia.org/wiki/Geohash
Intersection

3
docs/releases/1.10.txt
View File

@ -80,7 +80,8 @@ Minor features
and :attr:`~django.contrib.gis.gdal.GDALBand.std` attributes.
* Added support for the :class:`~django.contrib.gis.db.models.MakeLine`
aggregate on SpatiaLite.
aggregate and :class:`~django.contrib.gis.db.models.functions.GeoHash`
function on SpatiaLite.
* Added support for the
:class:`~django.contrib.gis.db.models.functions.Difference`,