mirror of
https://github.com/apache/superset.git
synced 2026-04-19 08:04:53 +00:00
95291facff
* Refactor db_engine_specs into package * Rename bigquery class and add epoch funcs * Fix flake8 errors * Dynamically load all engine specs * Fix linting errors and unit tests * Implement Snowflake epoch time funcs * Implement Teradata epoch time func * Fix presto datasource query and remove unused import * Fix broken datasource query * Add mypy ignore for false positive * Add missing license files * Make create_time_grains_tuple public * Fix flake8 quote * Fix incorrect licence header
62 lines
2.6 KiB
Python
62 lines
2.6 KiB
Python
# 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.
|
|
# pylint: disable=C,R,W
|
|
from superset.db_engine_specs.base import BaseEngineSpec
|
|
|
|
|
|
class AthenaEngineSpec(BaseEngineSpec):
|
|
engine = 'awsathena'
|
|
|
|
time_grain_functions = {
|
|
None: '{col}',
|
|
'PT1S': "date_trunc('second', CAST({col} AS TIMESTAMP))",
|
|
'PT1M': "date_trunc('minute', CAST({col} AS TIMESTAMP))",
|
|
'PT1H': "date_trunc('hour', CAST({col} AS TIMESTAMP))",
|
|
'P1D': "date_trunc('day', CAST({col} AS TIMESTAMP))",
|
|
'P1W': "date_trunc('week', CAST({col} AS TIMESTAMP))",
|
|
'P1M': "date_trunc('month', CAST({col} AS TIMESTAMP))",
|
|
'P0.25Y': "date_trunc('quarter', CAST({col} AS TIMESTAMP))",
|
|
'P1Y': "date_trunc('year', CAST({col} AS TIMESTAMP))",
|
|
'P1W/1970-01-03T00:00:00Z': "date_add('day', 5, date_trunc('week', \
|
|
date_add('day', 1, CAST({col} AS TIMESTAMP))))",
|
|
'1969-12-28T00:00:00Z/P1W': "date_add('day', -1, date_trunc('week', \
|
|
date_add('day', 1, CAST({col} AS TIMESTAMP))))",
|
|
}
|
|
|
|
@classmethod
|
|
def convert_dttm(cls, target_type, dttm):
|
|
tt = target_type.upper()
|
|
if tt == 'DATE':
|
|
return "from_iso8601_date('{}')".format(dttm.isoformat()[:10])
|
|
if tt == 'TIMESTAMP':
|
|
return "from_iso8601_timestamp('{}')".format(dttm.isoformat())
|
|
return ("CAST ('{}' AS TIMESTAMP)"
|
|
.format(dttm.strftime('%Y-%m-%d %H:%M:%S')))
|
|
|
|
@classmethod
|
|
def epoch_to_dttm(cls):
|
|
return 'from_unixtime({col})'
|
|
|
|
@staticmethod
|
|
def mutate_label(label):
|
|
"""
|
|
Athena only supports lowercase column names and aliases.
|
|
:param str label: Original label which might include uppercase letters
|
|
:return: String that is supported by the database
|
|
"""
|
|
return label.lower()
|