77 lines
3.1 KiB
Java
77 lines
3.1 KiB
Java
/**
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* The MIT License
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* Copyright (c) 2014 Ilkka Seppälä
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package com.iluwatar.collectionpipeline;
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import java.util.Arrays;
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import java.util.List;
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import java.util.Map;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* In imperative-style programming, it is common to use for and while loops for
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* most kinds of data processing. Function composition is a simple technique
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* that lets you sequence modular functions to create more complex operations.
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* When you run data through the sequence, you have a collection pipeline.
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* Together, the Function Composition and Collection Pipeline patterns enable
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* you to create sophisticated programs where data flow from upstream to
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* downstream and is passed through a series of transformations.
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*
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*/
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public class App {
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private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
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/**
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* Program entry point.
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*
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* @param args
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* command line args
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*/
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public static void main(String[] args) {
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List<Car> cars = CarFactory.createCars();
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List<String> modelsImperative = ImperativeProgramming.getModelsAfter2000(cars);
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LOGGER.info(modelsImperative.toString());
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List<String> modelsFunctional = FunctionalProgramming.getModelsAfter2000(cars);
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LOGGER.info(modelsFunctional.toString());
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Map<Category, List<Car>> groupingByCategoryImperative = ImperativeProgramming.getGroupingOfCarsByCategory(cars);
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LOGGER.info(groupingByCategoryImperative.toString());
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Map<Category, List<Car>> groupingByCategoryFunctional = FunctionalProgramming.getGroupingOfCarsByCategory(cars);
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LOGGER.info(groupingByCategoryFunctional.toString());
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Person john = new Person(cars);
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List<Car> sedansOwnedImperative = ImperativeProgramming.getSedanCarsOwnedSortedByDate(Arrays.asList(john));
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LOGGER.info(sedansOwnedImperative.toString());
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List<Car> sedansOwnedFunctional = FunctionalProgramming.getSedanCarsOwnedSortedByDate(Arrays.asList(john));
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LOGGER.info(sedansOwnedFunctional.toString());
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}
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}
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