craig-rueda commented on a change in pull request #9129: [datasets] new, API using command pattern URL: https://github.com/apache/incubator-superset/pull/9129#discussion_r386543605
########## File path: superset/datasets/commands/create.py ########## @@ -0,0 +1,82 @@ +# 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_appbuilder.security.sqla.models import User +from marshmallow import UnmarshalResult, ValidationError + +from superset.commands.base import BaseCommand, CommandValidateReturn +from superset.datasets.commands.base import populate_owners +from superset.datasets.commands.exceptions import ( + DatabaseNotFoundValidationError, + DatasetCreateFailedError, + DatasetExistsValidationError, + DatasetInvalidError, + TableNotFoundValidationError, +) +from superset.datasets.dao import DatasetDAO + + +class CreateDatasetCommand(BaseCommand): + def __init__(self, user: User, unmarshal: UnmarshalResult): + self._actor = user + self._properties = unmarshal.data.copy() + self._errors = unmarshal.errors + + def run(self): + is_valid, exceptions = self.validate() + if not is_valid: + for exception in exceptions: + self._errors.update(exception.normalized_messages()) + raise DatasetInvalidError() + + dataset = DatasetDAO.create(self._properties) + + if not dataset: + raise DatasetCreateFailedError() + return dataset + + def validate(self) -> CommandValidateReturn: + is_valid, exceptions = True, list() + database_id = self._properties["database"] + table_name = self._properties["table_name"] + schema = self._properties.get("schema", "") + + # Validate uniqueness + if not DatasetDAO.validate_uniqueness(database_id, table_name): Review comment: DAO stuff should be a little more generic here. Instead, just have something like `dataset_dao.find_by_tablename()` which then returns a dataset. In the command, we would check for a result, and raise if a dataset already exists. This allows the DAO to be a bit more low-level and pulls "business logic" up ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
