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Fixed #13070 -- Introduced fallback code to detect SpatiaLite 2.3.0 versions (which do not have `spatialite_version` function). 

git-svn-id: http://code.djangoproject.com/svn/django/trunk@12882 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Justin Bronn 2010-03-29 19:40:59 +00:00
parent 85e13681b0
commit 85fa7d8894
1 changed files with 26 additions and 10 deletions
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36
django/contrib/gis/db/backends/spatialite/operations.py
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@ -8,6 +8,7 @@ from django.contrib.gis.geometry.backend import Geometry
from django.contrib.gis.measure import Distance
from django.core.exceptions import ImproperlyConfigured
from django.db.backends.sqlite3.base import DatabaseOperations
from django.db.utils import DatabaseError
class SpatiaLiteOperator(SpatialOperation):
"For SpatiaLite operators (e.g. `&&`, `~`)."
@ -115,9 +116,9 @@ class SpatiaLiteOperations(DatabaseOperations, BaseSpatialOperations):
try:
vtup = self.spatialite_version_tuple()
version = vtup[1:]
if version < (2, 3, 1):
if version < (2, 3, 0):
raise ImproperlyConfigured('GeoDjango only supports SpatiaLite versions '
'2.3.1 and above')
'2.3.0 and above')
self.spatial_version = version
except ImproperlyConfigured:
raise
@ -203,12 +204,13 @@ class SpatiaLiteOperations(DatabaseOperations, BaseSpatialOperations):
def _get_spatialite_func(self, func):
"""
Helper routine for calling PostGIS functions and returning their result.
Helper routine for calling SpatiaLite functions and returning
their result.
"""
cursor = self.connection._cursor()
try:
try:
cursor.execute('SELECT %s()' % func)
cursor.execute('SELECT %s' % func)
row = cursor.fetchone()
except:
# Responsibility of caller to perform error handling.
@ -219,25 +221,39 @@ class SpatiaLiteOperations(DatabaseOperations, BaseSpatialOperations):
def geos_version(self):
"Returns the version of GEOS used by SpatiaLite as a string."
return self._get_spatialite_func('geos_version')
return self._get_spatialite_func('geos_version()')
def proj4_version(self):
"Returns the version of the PROJ.4 library used by SpatiaLite."
return self._get_spatialite_func('proj4_version')
return self._get_spatialite_func('proj4_version()')
def spatialite_version(self):
"Returns the SpatiaLite library version as a string."
return self._get_spatialite_func('spatialite_version')
return self._get_spatialite_func('spatialite_version()')
def spatialite_version_tuple(self):
"""
Returns the SpatiaLite version as a tuple (version string, major,
minor, subminor).
"""
# Getting the PostGIS version
version = self.spatialite_version()
m = self.version_regex.match(version)
# Getting the SpatiaLite version.
try:
version = self.spatialite_version()
except DatabaseError:
# The `spatialite_version` function first appeared in version 2.3.1
# of SpatiaLite, so doing a fallback test for 2.3.0 (which is
# used by popular Debian/Ubuntu packages).
version = None
try:
tmp = self._get_spatialite_func("X(GeomFromText('POINT(1 1)'))")
if tmp == 1.0: version = '2.3.0'
except DatabaseError:
pass
# If no version string defined, then just re-raise the original
# exception.
if version is None: raise
m = self.version_regex.match(version)
if m:
major = int(m.group('major'))
minor1 = int(m.group('minor1'))