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https://github.com/apache/superset.git
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fb51632e18
* Add typing to db_engine_specs * Add more type annotations and docstrings * Add docstrings and typing to sql_parse and db_engine_specs * Refine select_star * Fix execute and add more docstrings * Revert kwargs change from execute * Remove redundant or * Align view and table getter schema types * Fix return type of latest_partition * Remove some typing from presto * Improve docstring for __extract_from_token
50 lines
2.1 KiB
Python
50 lines
2.1 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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# pylint: disable=C,R,W
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from datetime import datetime
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from superset.db_engine_specs.base import BaseEngineSpec
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class KylinEngineSpec(BaseEngineSpec):
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"""Dialect for Apache Kylin"""
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engine = "kylin"
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time_grain_functions = {
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None: "{col}",
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"PT1S": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO SECOND) AS TIMESTAMP)",
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"PT1M": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO MINUTE) AS TIMESTAMP)",
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"PT1H": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO HOUR) AS TIMESTAMP)",
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"P1D": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO DAY) AS DATE)",
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"P1W": "CAST(TIMESTAMPADD(WEEK, WEEK(CAST({col} AS DATE)) - 1, \
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FLOOR(CAST({col} AS TIMESTAMP) TO YEAR)) AS DATE)",
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"P1M": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO MONTH) AS DATE)",
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"P0.25Y": "CAST(TIMESTAMPADD(QUARTER, QUARTER(CAST({col} AS DATE)) - 1, \
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FLOOR(CAST({col} AS TIMESTAMP) TO YEAR)) AS DATE)",
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"P1Y": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO YEAR) AS DATE)",
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}
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@classmethod
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def convert_dttm(cls, target_type: str, dttm: datetime) -> str:
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tt = target_type.upper()
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if tt == "DATE":
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return "CAST('{}' AS DATE)".format(dttm.isoformat()[:10])
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if tt == "TIMESTAMP":
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return "CAST('{}' AS TIMESTAMP)".format(dttm.strftime("%Y-%m-%d %H:%M:%S"))
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return "'{}'".format(dttm.strftime("%Y-%m-%d %H:%M:%S"))
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