join_test.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
#
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#  distributed under the License is distributed on an "AS IS" BASIS,
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#  See the License for the specific language governing permissions and
#  limitations under the License.
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import unittest
#from typing import Tuple, Callable, Iterable
from pywy.dataquanta import WayangContext
from unittest.mock import Mock
from pywy.platforms.java import JavaPlugin
from pywy.platforms.spark import SparkPlugin

class TestJoin(unittest.TestCase):
    def test_to_json(self):
        ctx = WayangContext() \
           .register({JavaPlugin, SparkPlugin})

        left = ctx.textfile("file:///var/www/html/data/left.csv").map(lambda x: tuple(x.split(",")), (int, str), (int, str))
        right = ctx.textfile("file:///var/www/html/data/right.csv").map(lambda x: tuple(x.split(",")), (int, str), (int, str))

        def join_key(item: (int, str)) -> (int):
            print(f"join item {item}")
            print(f"key: {item[0]}")

            return item[0]

        join = left.join(join_key, right, join_key) \
            .store_textfile("file:///var/www/html/data/join-out-python.txt")

        self.assertEqual(True, True)

if __name__ == "__main__":
    unittest.main()