55 lines
1.7 KiB
Java
55 lines
1.7 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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package com.iluwatar.dirtyflag;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* A middle-layer app that calls/passes along data from the back-end.
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*
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* @author swaisuan
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*/
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public class World {
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private List<String> countries;
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private final DataFetcher df;
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public World() {
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this.countries = new ArrayList<String>();
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this.df = new DataFetcher();
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}
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/**
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* Calls {@link DataFetcher} to fetch data from back-end.
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*
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* @return List of strings
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*/
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public List<String> fetch() {
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var data = df.fetch();
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countries = data.isEmpty() ? countries : data;
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return countries;
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}
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}
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