mirror of
https://github.com/apache/superset.git
synced 2026-04-18 23:55:00 +00:00
50 lines
1.7 KiB
Python
50 lines
1.7 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.
|
|
from typing import TYPE_CHECKING
|
|
|
|
from superset.db_engine_specs.base import BaseEngineSpec
|
|
|
|
if TYPE_CHECKING:
|
|
from superset.connectors.sqla.models import ( # pylint: disable=unused-import
|
|
TableColumn,
|
|
)
|
|
|
|
|
|
class DruidEngineSpec(BaseEngineSpec): # pylint: disable=abstract-method
|
|
"""Engine spec for Druid.io"""
|
|
|
|
engine = "druid"
|
|
allows_joins = False
|
|
allows_subqueries = True
|
|
|
|
_time_grain_functions = {
|
|
None: "{col}",
|
|
"PT1S": "FLOOR({col} TO SECOND)",
|
|
"PT1M": "FLOOR({col} TO MINUTE)",
|
|
"PT1H": "FLOOR({col} TO HOUR)",
|
|
"P1D": "FLOOR({col} TO DAY)",
|
|
"P1W": "FLOOR({col} TO WEEK)",
|
|
"P1M": "FLOOR({col} TO MONTH)",
|
|
"P0.25Y": "FLOOR({col} TO QUARTER)",
|
|
"P1Y": "FLOOR({col} TO YEAR)",
|
|
}
|
|
|
|
@classmethod
|
|
def alter_new_orm_column(cls, orm_col: "TableColumn") -> None:
|
|
if orm_col.column_name == "__time":
|
|
orm_col.is_dttm = True
|