package WS1617.Aufgabe1;

import java.util.Objects;

/**
 * Created by Armin on 09.06.2017.
 */
public abstract class BaseOpus implements Opus {

    private final int yearCreated;
    private final String title;

    protected BaseOpus (int yearCreated, String title){
        this.yearCreated = yearCreated;
        this.title = title;
    }

    @Override
    public int yearCreated(){
        return yearCreated;
    }


    @Override
    public String getTitle(){
        return title;
    }

    public abstract double setValue();

    public abstract double value();

    // b;

    @Override
    public String toString(){
        return "BaseOpus{" +
                "yearCreated= " + yearCreated() +
                "title= " + getTitle() +
                "}";
    }

    @Override
    public boolean equals (Object x){
        if (this == x) return false;                                //same
        if (this == null) return false;                             //null
        if ((this.getClass() != x.getClass())) return false;        //class

        BaseOpus that = (BaseOpus) x;                               //typecast

        if (this.yearCreated() != that.yearCreated()) return false;
        if (this.getTitle() != that.getTitle()) return false;

        return true;
    }


    @Override
    public int hashCode(){
        int result = 3;
        result = 31 * result + yearCreated();
        result = 31 * result + getTitle().hashCode();
        return result;
    }

}