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sqlite_pipeline.py
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sqlite_pipeline.py
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# Copyright 2024 Sakan Nirattisaykul
#
# Licensed 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.
import sqlite3
import traceback
import pandas as pd
from loguru import logger
def load_to_sqlite(df: pd.DataFrame) -> None:
"""
Load dataframe to SQLite database
:param df: Dataframe to load.
:return: None
"""
logger.info(f"Loading dataframe to SQLite database...")
try:
with sqlite3.connect('hsr.db') as conn:
df.to_sql('HsrCharacters', conn, if_exists='replace')
drop_views(conn)
create_views(conn)
except sqlite3.OperationalError as e:
logger.error(f'OperationalError: {e}')
logger.error(traceback.format_exc())
conn.rollback()
def create_views(conn: sqlite3.Connection) -> None:
"""
Create Views in database.
:param conn: SQLite connection.
:return: None
"""
logger.info("Creating Views...")
query = """
create view ElementCharacterCountByVersion as
WITH ElementCounts AS (
SELECT Version,
COUNT(DISTINCT CASE WHEN Element = 'Ice' THEN Character END) AS Ice,
COUNT(DISTINCT CASE WHEN Element = 'Fire' THEN Character END) AS Fire,
COUNT(DISTINCT CASE WHEN Element = 'Lightning' THEN Character END) AS Lightning,
COUNT(DISTINCT CASE WHEN Element = 'Physical' THEN Character END) AS Physical,
COUNT(DISTINCT CASE WHEN Element = 'Wind' THEN Character END) AS Wind,
COUNT(DISTINCT CASE WHEN Element = 'Quantum' THEN Character END) AS Quantum,
COUNT(DISTINCT CASE WHEN Element = 'Imaginary' THEN Character END) AS Imaginary
FROM HsrCharacters
GROUP BY Version
)
SELECT Version,
CAST((SELECT SUM(Ice) FROM ElementCounts p WHERE p.Version <= ec.Version) AS INT) AS Ice,
CAST((SELECT SUM(Fire) FROM ElementCounts p WHERE p.Version <= ec.Version) AS INT) AS Fire,
CAST((SELECT SUM(Lightning) FROM ElementCounts p WHERE p.Version <= ec.Version) AS INT) AS Lightning,
CAST((SELECT SUM(Physical) FROM ElementCounts p WHERE p.Version <= ec.Version) AS INT) AS Physical,
CAST((SELECT SUM(Wind) FROM ElementCounts p WHERE p.Version <= ec.Version) AS INT) AS Wind,
CAST((SELECT SUM(Quantum) FROM ElementCounts p WHERE p.Version <= ec.Version) AS INT) AS Quantum,
CAST((SELECT SUM(Imaginary) FROM ElementCounts p WHERE p.Version <= ec.Version) AS INT) AS Imaginary
FROM ElementCounts ec;
"""
conn.execute(query)
query = """
create view PathCharacterCountByVersion as
WITH PathCounts AS (
SELECT Version,
COUNT(DISTINCT CASE WHEN Path = 'Abundance' THEN Character END) AS Abundance,
COUNT(DISTINCT CASE WHEN Path = 'Erudition' THEN Character END) AS Erudition,
COUNT(DISTINCT CASE WHEN Path = 'Hunt' THEN Character END) AS Hunt,
COUNT(DISTINCT CASE WHEN Path = 'Destruction' THEN Character END) AS Destruction,
COUNT(DISTINCT CASE WHEN Path = 'Preservation' THEN Character END) AS Preservation,
COUNT(DISTINCT CASE WHEN Path = 'Nihility' THEN Character END) AS Nihility,
COUNT(DISTINCT CASE WHEN Path = 'Harmony' THEN Character END) AS Harmony
FROM HsrCharacters
GROUP BY Version
), PathCountVersion AS (
SELECT Version,
(SELECT SUM(Abundance) FROM PathCounts p WHERE p.Version <= pc.Version) AS Abundance,
(SELECT SUM(Erudition) FROM PathCounts p WHERE p.Version <= pc.Version) AS Erudition,
(SELECT SUM(Hunt) FROM PathCounts p WHERE p.Version <= pc.Version) AS Hunt,
(SELECT SUM(Destruction) FROM PathCounts p WHERE p.Version <= pc.Version) AS Destruction,
(SELECT SUM(Preservation) FROM PathCounts p WHERE p.Version <= pc.Version) AS Preservation,
(SELECT SUM(Nihility) FROM PathCounts p WHERE p.Version <= pc.Version) AS Nihility,
(SELECT SUM(Harmony) FROM PathCounts p WHERE p.Version <= pc.Version) AS Harmony
FROM PathCounts pc
)
select pcv.Version,
cast(pcv.Abundance as int) AS Abundance,
cast(pcv.Erudition as int) AS Erudition,
cast(pcv.Hunt as int) AS Hunt,
cast(pcv.Destruction as int) AS Destruction,
cast(pcv.Preservation as int) AS Preservation,
cast(pcv.Nihility as int) AS Nihility,
cast(pcv.Harmony as int) AS Harmony
from PathCountVersion pcv;
"""
conn.execute(query)
query = """
create view RarityCharacterCountByVersion as
WITH RarityCounts AS (
SELECT
Version,
COUNT(DISTINCT CASE WHEN Rarity = '5-Star' THEN Character END) AS _5_Star,
COUNT(DISTINCT CASE WHEN Rarity = '4-Star' THEN Character END) AS _4_Star
FROM HsrCharacters
GROUP BY Version
), RarityCountsVersion AS (
SELECT
Version,
(SELECT SUM(_5_Star) FROM RarityCounts p WHERE p.Version <= rc.Version) AS _5_Star,
(SELECT SUM(_4_Star) FROM RarityCounts p WHERE p.Version <= rc.Version) AS _4_Star
FROM RarityCounts rc
)
select rcv.Version,
cast(rcv._4_Star as int) AS _4_Star,
cast(rcv._5_Star as int) AS _5_Star
from RarityCountsVersion rcv;
"""
conn.execute(query)
def drop_views(conn: sqlite3.Connection) -> None:
"""
Drop Views in the database if exist.
:param conn: SQLite connection
:return: None
"""
logger.info("Dropping Views if exist...")
query = f"DROP VIEW IF EXISTS ElementCharacterCountByVersion"
conn.execute(query)
query = f"DROP VIEW IF EXISTS PathCharacterCountByVersion"
conn.execute(query)
query = f"DROP VIEW IF EXISTS RarityCharacterCountByVersion"
conn.execute(query)
if __name__ == '__main__':
pass