Files
java-design-patterns/collection-pipeline/src/main/java/com/iluwatar/collectionpipeline/App.java
T
Anurag Agarwal 33ea7335b1 Java 11 migration: patterns (remaining b-c) (#1081)
* Moves business-delegate pattern  to java 11

* Moves bytecode pattern  to java 11

* Moves caching pattern  to java 11

* Moves callback pattern  to java 11

* Moves chain pattern  to java 11

* Moves circuit-breaker pattern  to java 11

* Moves collection-pipeline pattern  to java 11

* Moves command pattern  to java 11

* Moves commander pattern  to java 11

* Moves composite pattern  to java 11

* Corrects test cases
2019-11-12 21:56:46 +02:00

71 lines
2.9 KiB
Java

/*
* The MIT License
* Copyright © 2014-2019 Ilkka Seppälä
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.collectionpipeline;
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* In imperative-style programming, it is common to use for and while loops for most kinds of data
* processing. Function composition is a simple technique that lets you sequence modular functions
* to create more complex operations. When you run data through the sequence, you have a collection
* pipeline. Together, the Function Composition and Collection Pipeline patterns enable you to
* create sophisticated programs where data flow from upstream to downstream and is passed through a
* series of transformations.
*/
public class App {
private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
/**
* Program entry point.
*
* @param args command line args
*/
public static void main(String[] args) {
var cars = CarFactory.createCars();
var modelsImperative = ImperativeProgramming.getModelsAfter2000(cars);
LOGGER.info(modelsImperative.toString());
var modelsFunctional = FunctionalProgramming.getModelsAfter2000(cars);
LOGGER.info(modelsFunctional.toString());
var groupingByCategoryImperative = ImperativeProgramming.getGroupingOfCarsByCategory(cars);
LOGGER.info(groupingByCategoryImperative.toString());
var groupingByCategoryFunctional = FunctionalProgramming.getGroupingOfCarsByCategory(cars);
LOGGER.info(groupingByCategoryFunctional.toString());
var john = new Person(cars);
var sedansOwnedImperative = ImperativeProgramming.getSedanCarsOwnedSortedByDate(List.of(john));
LOGGER.info(sedansOwnedImperative.toString());
var sedansOwnedFunctional = FunctionalProgramming.getSedanCarsOwnedSortedByDate(List.of(john));
LOGGER.info(sedansOwnedFunctional.toString());
}
}