superset 2018-06-07_09-52_afb7730f6a9c_remove_empty_filters 源码
superset 2018-06-07_09-52_afb7730f6a9c_remove_empty_filters 代码
文件路径：/superset/migrations/versions/2018-06-07_09-52_afb7730f6a9c_remove_empty_filters.py
# 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
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# KIND, either express or implied. See the License for the
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# under the License.
"""remove empty filters
Revision ID: afb7730f6a9c
Revises: c5756bec8b47
Create Date: 2018-06-07 09:52:54.535961
"""
# revision identifiers, used by Alembic.
revision = "afb7730f6a9c"
down_revision = "c5756bec8b47"
import json
from alembic import op
from sqlalchemy import Column, Integer, Text
from sqlalchemy.ext.declarative import declarative_base
from superset import db
Base = declarative_base()
class Slice(Base):
__tablename__ = "slices"
id = Column(Integer, primary_key=True)
params = Column(Text)
def upgrade():
bind = op.get_bind()
session = db.Session(bind=bind)
for slc in session.query(Slice).all():
try:
params = json.loads(slc.params)
for key in ("filters", "having_filters", "extra_filters"):
value = params.get(key)
# Remove empty in/not-in filters.
if value:
params[key] = [
x
for x in value
if not (x["op"] in ("in", "not in") and not x["val"])
]
slc.params = json.dumps(params, sort_keys=True)
except Exception:
pass
session.commit()
session.close()
def downgrade():
pass
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