def _create_application_event(self):

        return ApplicationEvent(application=self)
OneToOne fields are constrained to a single database
dataset/ETHPy150Open enthought/envisage/envisage/application.py/Application._create_application_event--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/tests/regressiontests/multiple_database/tests.py/QueryTestCase.test_o2o_separation