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https://github.com/apache/superset.git
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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
73 lines
2.8 KiB
Python
73 lines
2.8 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 typing import List
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from superset.db_engine_specs.base import BaseEngineSpec
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from superset.utils import core as utils
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class SqliteEngineSpec(BaseEngineSpec):
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engine = 'sqlite'
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time_grain_functions = {
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None: '{col}',
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'PT1H': "DATETIME(STRFTIME('%Y-%m-%dT%H:00:00', {col}))",
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'P1D': 'DATE({col})',
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'P1W': "DATE({col}, -strftime('%W', {col}) || ' days')",
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'P1M': "DATE({col}, -strftime('%d', {col}) || ' days', '+1 day')",
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'P1Y': "DATETIME(STRFTIME('%Y-01-01T00:00:00', {col}))",
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'P1W/1970-01-03T00:00:00Z': "DATE({col}, 'weekday 6')",
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'1969-12-28T00:00:00Z/P1W': "DATE({col}, 'weekday 0', '-7 days')",
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}
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@classmethod
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def epoch_to_dttm(cls):
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return "datetime({col}, 'unixepoch')"
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@classmethod
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def get_all_datasource_names(cls, db, datasource_type: str) \
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-> List[utils.DatasourceName]:
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schemas = db.get_all_schema_names(cache=db.schema_cache_enabled,
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cache_timeout=db.schema_cache_timeout,
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force=True)
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schema = schemas[0]
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if datasource_type == 'table':
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return db.get_all_table_names_in_schema(
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schema=schema, force=True,
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cache=db.table_cache_enabled,
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cache_timeout=db.table_cache_timeout)
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elif datasource_type == 'view':
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return db.get_all_view_names_in_schema(
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schema=schema, force=True,
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cache=db.table_cache_enabled,
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cache_timeout=db.table_cache_timeout)
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else:
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raise Exception(f'Unsupported datasource_type: {datasource_type}')
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@classmethod
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def convert_dttm(cls, target_type, dttm):
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iso = dttm.isoformat().replace('T', ' ')
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if '.' not in iso:
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iso += '.000000'
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return "'{}'".format(iso)
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@classmethod
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def get_table_names(cls, inspector, schema):
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"""Need to disregard the schema for Sqlite"""
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return sorted(inspector.get_table_names())
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