| """ |
| 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 |
| |
| |
| |
| |
