1 """

     2  This module provides the backend for spatial SQL construction with Django.

     3 

     4  Specifically, this module will import the correct routines and modules

     5  needed for GeoDjango to interface with the spatial database.

     6 """

     7 from django.conf import settings

     8 from django.contrib.gis.db.backend.util import gqn

     9 

    10 # Retrieving the necessary settings from the backend.

    11 if settings.DATABASE_ENGINE == 'postgresql_psycopg2':

    12     from django.contrib.gis.db.backend.postgis import create_test_spatial_db, get_geo_where_clause, SpatialBackend

    13 elif settings.DATABASE_ENGINE == 'oracle':

    14     from django.contrib.gis.db.backend.oracle import create_test_spatial_db, get_geo_where_clause, SpatialBackend

    15 elif settings.DATABASE_ENGINE == 'mysql':

    16     from django.contrib.gis.db.backend.mysql import create_test_spatial_db, get_geo_where_clause, SpatialBackend

    17 elif settings.DATABASE_ENGINE == 'sqlite3':

    18     from django.contrib.gis.db.backend.spatialite import create_test_spatial_db, get_geo_where_clause, SpatialBackend

    19 else:

    20     raise NotImplementedError('No Geographic Backend exists for %s' % settings.DATABASE_ENGINE)