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# Copyright (C) 2015 Linaro Limited
#
# Author: Stevan Radakovic <stevan.radakovic@linaro.org>
#
# SPDX-License-Identifier: GPL-2.0-or-later
from django.db import models
class MaterializedViewManager(models.Manager):
"""Custom Manager for materialized views.
Inherits the django Manager class and prevents users from doing view
create, update and delete calls.
"""
def bulk_create(self, *args, **kwargs):
raise NotImplementedError
def create(self, *args, **kwargs):
raise NotImplementedError
def get_or_create(self, *args, **kwargs):
raise NotImplementedError
def delete(self, *args, **kwargs):
raise NotImplementedError
def update(self, *args, **kwargs):
raise NotImplementedError
class MaterializedView(models.Model):
"""Materialized view model."""
objects = MaterializedViewManager()
class Meta:
abstract = True
managed = False
def delete(self, *args, **kwargs):
raise NotImplementedError
def save(self, *args, **kwargs):
raise NotImplementedError
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