app/django/contrib/gis/db/backend/base.py
author Lennard de Rijk <ljvderijk@gmail.com>
Sat, 07 Mar 2009 22:14:04 +0000
changeset 1730 2d877bb10306
parent 323 ff1a9aa48cfd
permissions -rw-r--r--
Important roles can now not resign if they are the last in their group. Fixes Issue 288. I've decided to do it outside of the logic because if the need arises to kick the last org admin out of a group we need the ability to do so. Patch by: Lennard de Rijk Reviewed by: to-be-reviewed

"""
 This module holds the base `SpatialBackend` object, which is
 instantiated by each spatial backend with the features it has.
"""
# TODO: Create a `Geometry` protocol and allow user to use
# different Geometry objects -- for now we just use GEOSGeometry.
from django.contrib.gis.geos import GEOSGeometry, GEOSException

class BaseSpatialBackend(object):
    Geometry = GEOSGeometry
    GeometryException = GEOSException

    def __init__(self, **kwargs):
        kwargs.setdefault('distance_functions', {})
        kwargs.setdefault('limited_where', {})
        for k, v in kwargs.iteritems(): setattr(self, k, v)
 
    def __getattr__(self, name):
        """
        All attributes of the spatial backend return False by default.
        """
        try:
            return self.__dict__[name]
        except KeyError:
            return False