app/django/contrib/gis/db/backend/base.py
author Todd Larsen <tlarsen@google.com>
Sat, 22 Nov 2008 07:57:00 +0000
changeset 543 280a1ac6bcc1
parent 323 ff1a9aa48cfd
permissions -rw-r--r--
Merge soc/logic/out_of_band.py into soc/views/out_of_band.py. Merge errorResponse() and requestLogin() from soc/views/simple.py into out_of_band.Error and out_of_band.LoginRequest exception classes, respectively. Remove no-longer-used soc/logic/out_of_band.py and soc/views/simple.py. Fix some problems where usage of out_of_band was broken. Patch by: Todd Larsen

"""
 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