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420eff42b8
* New branch from superset for integration with firebolt sqlalchemy adapter * Added db_engine_spec file for Firebolt * Removed firebolt code from superset repo * Deleted virtual env commit * Adding time grain changes to firebolt.py * Updated README.md Added steps to install and run Superset with Firebolt SQLAlchemy Adapter * Update README.md Reduced installation steps. Using PyPi installation for adapter now * Revert "Update README.md" This reverts commit5ed17c7a45. * Revert "Updated README.md" This reverts commit45c5072649. * added epoch methods, added test cases for firebolt db engine spec and edited setup.py * Added license to files * Added documentation for Firebolt-SQLAlchemy * Removed trailing whitespace Co-authored-by: raghavsharma <raghavs@sigmoidanalytics.com> Co-authored-by: raghavSharmaSigmoid <88667094+raghavSharmaSigmoid@users.noreply.github.com>
57 lines
2.2 KiB
Python
57 lines
2.2 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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from datetime import datetime
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from typing import Optional
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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 FireboltEngineSpec(BaseEngineSpec):
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"""Engine spec for Firebolt"""
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engine = "firebolt"
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engine_name = "Firebolt"
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default_driver = "firebolt"
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_time_grain_expressions = {
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None: "{col}",
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"PT1S": "date_trunc('second', CAST({col} AS TIMESTAMP))",
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"PT1M": "date_trunc('minute', CAST({col} AS TIMESTAMP))",
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"PT1H": "date_trunc('hour', CAST({col} AS TIMESTAMP))",
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"P1D": "date_trunc('day', CAST({col} AS TIMESTAMP))",
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"P1W": "date_trunc('week', CAST({col} AS TIMESTAMP))",
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"P1M": "date_trunc('month', CAST({col} AS TIMESTAMP))",
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"P0.25Y": "date_trunc('quarter', CAST({col} AS TIMESTAMP))",
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"P1Y": "date_trunc('year', CAST({col} AS TIMESTAMP))",
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}
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@classmethod
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def convert_dttm(cls, target_type: str, dttm: datetime) -> Optional[str]:
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tt = target_type.upper()
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if tt == utils.TemporalType.DATE:
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return f"CAST('{dttm.date().isoformat()}' AS DATE)"
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if tt == utils.TemporalType.DATETIME:
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return f"""CAST('{dttm.isoformat(timespec="seconds")}' AS DATETIME)"""
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if tt == utils.TemporalType.TIMESTAMP:
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return f"""CAST('{dttm.isoformat(timespec="seconds")}' AS TIMESTAMP)"""
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return None
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@classmethod
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def epoch_to_dttm(cls) -> str:
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return "from_unixtime({col})"
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