superset filters 源码
superset filters 代码
文件路径：/superset/datasets/filters.py
# Licensed to the Apache Software Foundation (ASF) under one
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# 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
#
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from flask_babel import lazy_gettext as _
from sqlalchemy import not_, or_
from sqlalchemy.orm.query import Query
from superset.connectors.sqla.models import SqlaTable
from superset.views.base import BaseFilter
class DatasetIsNullOrEmptyFilter(BaseFilter): # pylint: disable=too-few-public-methods
name = _("Null or Empty")
arg_name = "dataset_is_null_or_empty"
def apply(self, query: Query, value: bool) -> Query:
filter_clause = or_(SqlaTable.sql.is_(None), SqlaTable.sql == "")
if not value:
filter_clause = not_(filter_clause)
return query.filter(filter_clause)
class DatasetCertifiedFilter(BaseFilter): # pylint: disable=too-few-public-methods
name = _("Is certified")
arg_name = "dataset_is_certified"
def apply(self, query: Query, value: bool) -> Query:
check_value = '%"certification":%'
if value is True:
return query.filter(SqlaTable.extra.ilike(check_value))
if value is False:
return query.filter(
or_(
SqlaTable.extra.notlike(check_value),
SqlaTable.extra.is_(None),
)
)
return query
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