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2055ecc1ba
* feat: refactor error components and add database issue code * Apply suggestions from code review Co-authored-by: John Bodley <4567245+john-bodley@users.noreply.github.com> Co-authored-by: John Bodley <4567245+john-bodley@users.noreply.github.com>
64 lines
2.2 KiB
Python
64 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 List, Optional
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from sqlalchemy.engine.reflection import Inspector
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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 ImpalaEngineSpec(BaseEngineSpec):
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"""Engine spec for Cloudera's Impala"""
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engine = "impala"
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engine_name = "Apache Impala"
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_time_grain_expressions = {
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None: "{col}",
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"PT1M": "TRUNC({col}, 'MI')",
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"PT1H": "TRUNC({col}, 'HH')",
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"P1D": "TRUNC({col}, 'DD')",
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"P1W": "TRUNC({col}, 'WW')",
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"P1M": "TRUNC({col}, 'MONTH')",
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"P0.25Y": "TRUNC({col}, 'Q')",
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"P1Y": "TRUNC({col}, 'YYYY')",
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}
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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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@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.TIMESTAMP:
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return f"""CAST('{dttm.isoformat(timespec="microseconds")}' AS TIMESTAMP)"""
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return None
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@classmethod
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def get_schema_names(cls, inspector: Inspector) -> List[str]:
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schemas = [
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row[0]
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for row in inspector.engine.execute("SHOW SCHEMAS")
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if not row[0].startswith("_")
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]
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return schemas
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