Java tutorial
/** * The MIT License * Copyright (c) 2016 Thiago Souza * * 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.crossover.trial.weather.domain; import com.crossover.trial.weather.util.iata.IATADeserializer; import com.crossover.trial.weather.util.iata.IATASerializer; import com.fasterxml.jackson.databind.annotation.JsonDeserialize; import com.fasterxml.jackson.databind.annotation.JsonSerialize; import org.springframework.util.Assert; import javax.persistence.Column; import javax.persistence.Embeddable; import java.io.Serializable; /** * * International Air Transport Association (IATA) Code * * It's a standard 3-letter code used to identify {@link Airport} * */ @Embeddable @JsonSerialize(using = IATASerializer.class) @JsonDeserialize(using = IATADeserializer.class) public final class IATA implements Comparable<IATA>, Serializable { @Column(name = "iata") private String code; public static IATA valueOf(String code) { Assert.hasText(code, "iata code is required"); Assert.isTrue(code.matches("[a-zA-Z]{3}"), "iata must be a 3-letter code"); return new IATA(code); } protected IATA() { } private IATA(String code) { this.code = code.toUpperCase(); } public String getCode() { return code; } @Override public boolean equals(Object o) { if (this == o) return true; if (o == null || getClass() != o.getClass()) return false; IATA iata = (IATA) o; return code.equals(iata.code); } @Override public int hashCode() { return code.hashCode(); } @Override public String toString() { return code; } @Override public int compareTo(IATA o) { return code.compareTo(o.code); } }