java-design-patterns/single-table-inheritance/src/main/java/com/iluwatar/entity/Train.java

/*
 * 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.DiscriminatorValue;
import jakarta.persistence.Entity;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.NoArgsConstructor;

/**
 * A class that extends the PassengerVehicle class
 * and provides the concrete inheritance implementation of the Car.
 *
 * @see PassengerVehicle PassengerVehicle
 * @see Vehicle Vehicle
 */
@Data
@NoArgsConstructor
@EqualsAndHashCode(callSuper = true)
@Entity
@DiscriminatorValue(value = "TRAIN")
public class Train extends PassengerVehicle {

  private int noOfCarriages;

  public Train(String manufacturer, String model, int noOfPassengers, int noOfCarriages) {
    super(manufacturer, model, noOfPassengers);
    this.noOfCarriages = noOfCarriages;
  }

  // Overridden the toString method to specify the Vehicle object
  @Override
  public String toString() {
    return "Train{"
            + super.toString()
            + '}';
  }

}