| # 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 datetime import datetime |
| |
| from superset.db_engine_specs.base import BaseEngineSpec |
| |
| |
| class KylinEngineSpec(BaseEngineSpec): # pylint: disable=abstract-method |
| """Dialect for Apache Kylin""" |
| |
| engine = "kylin" |
| |
| _time_grain_functions = { |
| None: "{col}", |
| "PT1S": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO SECOND) AS TIMESTAMP)", |
| "PT1M": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO MINUTE) AS TIMESTAMP)", |
| "PT1H": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO HOUR) AS TIMESTAMP)", |
| "P1D": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO DAY) AS DATE)", |
| "P1W": "CAST(TIMESTAMPADD(WEEK, WEEK(CAST({col} AS DATE)) - 1, \ |
| FLOOR(CAST({col} AS TIMESTAMP) TO YEAR)) AS DATE)", |
| "P1M": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO MONTH) AS DATE)", |
| "P0.25Y": "CAST(TIMESTAMPADD(QUARTER, QUARTER(CAST({col} AS DATE)) - 1, \ |
| FLOOR(CAST({col} AS TIMESTAMP) TO YEAR)) AS DATE)", |
| "P1Y": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO YEAR) AS DATE)", |
| } |
| |
| @classmethod |
| def convert_dttm(cls, target_type: str, dttm: datetime) -> str: |
| tt = target_type.upper() |
| if tt == "DATE": |
| return "CAST('{}' AS DATE)".format(dttm.isoformat()[:10]) |
| if tt == "TIMESTAMP": |
| return "CAST('{}' AS TIMESTAMP)".format(dttm.strftime("%Y-%m-%d %H:%M:%S")) |
| return "'{}'".format(dttm.strftime("%Y-%m-%d %H:%M:%S")) |