single-table-inheritance/src/main/java/com/iluwatar/entity/Vehicle.java - master - githubmirror/java-design-patterns

single-table-inheritance/src/main/java/com/iluwatar/entity/Vehicle.java

77 строк3 KB

Ilkka Seppälä

deps: Refactor dependencies (#3224)

29 мар 2025, 20:34

29 мар 2025, 20:340ca162a

/*
 * This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
 *
 * The MIT License
 * Copyright © 2014-2022 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.entity;

import jakarta.persistence.DiscriminatorColumn;
import jakarta.persistence.Entity;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.GenerationType;
import jakarta.persistence.Id;
import jakarta.persistence.Inheritance;
import jakarta.persistence.InheritanceType;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.NoArgsConstructor;

/**
 * An abstract class that is the root of the Vehicle Inheritance hierarchy and basic provides
 * properties for all the vehicles.
 */
@Data
@NoArgsConstructor
@AllArgsConstructor
@EqualsAndHashCode
@Entity
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(name = "VEHICLE_TYPE")
public abstract class Vehicle {

  @Id
  @GeneratedValue(strategy = GenerationType.IDENTITY)
  private int vehicleId;

  private String manufacturer;

  private String model;

  protected Vehicle(String manufacturer, String model) {
    this.manufacturer = manufacturer;
    this.model = model;
  }

  @Override
  public String toString() {
    return "Vehicle{"
        + "vehicleId="
        + vehicleId
        + ", manufacturer='"
        + manufacturer
        + '\''
        + ", model='"
        + model
        + '}';
  }
}