package com.anahata.yam.model;

import java.io.Serializable;
import javax.persistence.*;
import lombok.AllArgsConstructor;
import lombok.Getter;
import lombok.NoArgsConstructor;

/**
 * The base entity model for Yam model classes.
 *
 * @author Robert Nagajek <robert@anahata-it.com.au>
 */
@MappedSuperclass
@NoArgsConstructor
@AllArgsConstructor
@Getter
public abstract class Base implements Serializable {
    @Id
    @GeneratedValue
    @Basic(optional = false)
    @Column(name = "ID", nullable = false)
    private Long id;

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }

        if (obj == null) {
            return false;
        }

        if (getClass() != obj.getClass()) {
            return false;
        }

        final Base other = (Base)obj;

        if (id == null || other.id == null) {
            return false;
        }

        return id.equals(other.id);
    }

    @Override
    public int hashCode() {
        if (id == null) {
            return super.hashCode();
        }

        int hash = 7;
        hash = 97 * hash + id.hashCode();
        return hash;
    }

    @Override
    public String toString() {
        return getClass().getSimpleName() + ": id=" + id + " ref=" + System.identityHashCode(this);
    }
}