70 lines
2.4 KiB
Python
70 lines
2.4 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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import logging
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import pandas as pd
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from sqlalchemy import inspect, String, Text
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import superset.utils.database as database_utils
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from superset import db
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from superset.sql_parse import Table
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from superset.utils import json
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from .helpers import get_example_url, get_table_connector_registry
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logger = logging.getLogger(__name__)
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def load_paris_iris_geojson(only_metadata: bool = False, force: bool = False) -> None:
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tbl_name = "paris_iris_mapping"
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database = database_utils.get_example_database()
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with database.get_sqla_engine() as engine:
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schema = inspect(engine).default_schema_name
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table_exists = database.has_table(Table(tbl_name, schema))
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if not only_metadata and (not table_exists or force):
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url = get_example_url("paris_iris.json.gz")
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df = pd.read_json(url, compression="gzip")
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df["features"] = df.features.map(json.dumps)
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df.to_sql(
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tbl_name,
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engine,
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schema=schema,
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if_exists="replace",
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chunksize=500,
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dtype={
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"color": String(255),
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"name": String(255),
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"features": Text,
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"type": Text,
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},
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index=False,
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)
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logger.debug(f"Creating table {tbl_name} reference")
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table = get_table_connector_registry()
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tbl = db.session.query(table).filter_by(table_name=tbl_name).first()
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if not tbl:
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tbl = table(table_name=tbl_name, schema=schema)
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db.session.add(tbl)
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tbl.description = "Map of Paris"
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tbl.database = database
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tbl.filter_select_enabled = True
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tbl.fetch_metadata()
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