| #!/usr/bin/env python |
| # encoding: utf-8 |
| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, |
| # software distributed under the License is distributed on an |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| # KIND, either express or implied. See the License for the |
| # specific language governing permissions and limitations |
| # under the License. |
| |
| from flask_sqlalchemy import SQLAlchemy |
| |
| db = SQLAlchemy() |
| |
| |
| class Service(object): |
| __model__ = None |
| |
| def _isinstance(self, model, raise_error=True): |
| valid_type = isinstance(model, self.__model__) |
| if not valid_type and raise_error: |
| raise ValueError('%s is not of type %s' % (model, self.__model__)) |
| return valid_type |
| |
| def save(self, model): |
| self._isinstance(model) |
| db.session.add(model) |
| db.session.commit() |
| return model |
| |
| def get(self, primarykey): |
| return self.__model__.query.get(primarykey) |
| |
| def create(self, **kwargs): |
| return self.save(self.__model__(**kwargs)) |
| |
| def delete(self, model): |
| self._isinstance(model) |
| db.session.delete(model) |
| db.session.commit() |