fb2c026822
* Moves eip-aggregator to Java 11 * Moves eip-message-channel to Java 11 * Moves eip-publish-subscribe to Java 11 * Moves eip-splitter to Java 11 * Moves eip-wire-tap to Java 11 * Moves event-aggregator to Java 11 * Moves event-asynchronous to Java 11 * Moves event-driven-architecture to Java 11 * Moves event-queue to Java 11 * Moves event-sourcing to Java 11 * Moves execute-around to Java 11 * Moves extension-objects to Java 11
82 lines
3.0 KiB
Java
82 lines
3.0 KiB
Java
/*
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* The MIT License
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* Copyright © 2014-2019 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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import abstractextensions.CommanderExtension;
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import abstractextensions.SergeantExtension;
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import abstractextensions.SoldierExtension;
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import java.util.Optional;
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import java.util.function.Function;
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import org.slf4j.LoggerFactory;
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import units.CommanderUnit;
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import units.SergeantUnit;
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import units.SoldierUnit;
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import units.Unit;
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/**
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* Anticipate that an object’s interface needs to be extended in the future. Additional interfaces
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* are defined by extension objects.
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*/
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public class App {
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/**
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* Program entry point.
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*
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* @param args command line args
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*/
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public static void main(String[] args) {
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//Create 3 different units
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var soldierUnit = new SoldierUnit("SoldierUnit1");
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var sergeantUnit = new SergeantUnit("SergeantUnit1");
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var commanderUnit = new CommanderUnit("CommanderUnit1");
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//check for each unit to have an extension
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checkExtensionsForUnit(soldierUnit);
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checkExtensionsForUnit(sergeantUnit);
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checkExtensionsForUnit(commanderUnit);
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}
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private static void checkExtensionsForUnit(Unit unit) {
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final var logger = LoggerFactory.getLogger(App.class);
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var name = unit.getName();
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Function<String, Runnable> func = (e) -> () -> logger.info(name + " without " + e);
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var extension = "SoldierExtension";
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Optional.ofNullable(unit.getUnitExtension(extension))
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.map(e -> (SoldierExtension) e)
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.ifPresentOrElse(SoldierExtension::soldierReady, func.apply(extension));
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extension = "SergeantExtension";
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Optional.ofNullable(unit.getUnitExtension(extension))
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.map(e -> (SergeantExtension) e)
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.ifPresentOrElse(SergeantExtension::sergeantReady, func.apply(extension));
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extension = "CommanderExtension";
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Optional.ofNullable(unit.getUnitExtension(extension))
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.map(e -> (CommanderExtension) e)
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.ifPresentOrElse(CommanderExtension::commanderReady, func.apply(extension));
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}
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}
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