85 lines
3.0 KiB
Java
85 lines
3.0 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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import abstractextensions.CommanderExtension;
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import abstractextensions.SergeantExtension;
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import abstractextensions.SoldierExtension;
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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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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* Anticipate that an object’s interface needs to be extended in the future.
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* Additional interfaces 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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Unit soldierUnit = new SoldierUnit("SoldierUnit1");
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Unit sergeantUnit = new SergeantUnit("SergeantUnit1");
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Unit 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 Logger logger = LoggerFactory.getLogger(App.class);
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SoldierExtension soldierExtension = (SoldierExtension) unit.getUnitExtension("SoldierExtension");
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SergeantExtension sergeantExtension = (SergeantExtension) unit.getUnitExtension("SergeantExtension");
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CommanderExtension commanderExtension = (CommanderExtension) unit.getUnitExtension("CommanderExtension");
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//if unit have extension call the method
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if (soldierExtension != null) {
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soldierExtension.soldierReady();
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} else {
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logger.info(unit.getName() + " without SoldierExtension");
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}
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if (sergeantExtension != null) {
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sergeantExtension.sergeantReady();
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} else {
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logger.info(unit.getName() + " without SergeantExtension");
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}
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if (commanderExtension != null) {
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commanderExtension.commanderReady();
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} else {
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logger.info(unit.getName() + " without CommanderExtension");
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}
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}
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}
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