source: backend/web3-Ednevnik-Backend/src/main/java/com/nikola/web3ednevnikbackend/model/classesAndEnrolment/Klas.java

package com.nikola.web3ednevnikbackend.model.classesAndEnrolment;


import com.fasterxml.jackson.annotation.JsonIgnore;
import com.nikola.web3ednevnikbackend.model.schedulesAndClasses.Raspored;
import com.nikola.web3ednevnikbackend.model.subjectsAndTeachers.Predmet;
import com.nikola.web3ednevnikbackend.model.users.Klasen_Rakovoditel;
import jakarta.persistence.*;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.ToString;

import java.util.HashSet;
import java.util.Set;
import java.util.UUID;

@Entity
@Table(name = "klas")
@Data
public class Klas {

    @Id
    @GeneratedValue
    @Column(columnDefinition = "UUID", updatable = false, nullable = false)
    private UUID id;

    @Column(name = "godinana_slusanje", length = 10, nullable = false)
    private String godinaNa_Slusanje;

    @Column(name = "paralelka", nullable = false, length = 1)
    private Character paralelka;

    @Column(name = "oddelenie", nullable = false)
    private Integer oddelenie;

    @OneToOne(fetch = FetchType.LAZY)
    @JoinColumn(
            name = "koristirasporedid",
            referencedColumnName = "id",
            unique = true,
            foreignKey = @ForeignKey(name = "fk_klas_raspored")
    )
    private Raspored koristiRaspored;

    @Column(name = "active", nullable = false)
    private Boolean active = true;


    @OneToOne(fetch = FetchType.LAZY)
    @JoinColumn(
            name = "klasen_rakovoditel_id",
            referencedColumnName = "id",
            nullable = false,
            foreignKey = @ForeignKey(name = "fk_klas_klasen_rakovoditel")
    )
    private Klasen_Rakovoditel klasenRakovoditel;
    @ManyToMany
    @JoinTable(
            name = "klasslusa_predmet",
            joinColumns = @JoinColumn(name = "klas_id"),
            inverseJoinColumns = @JoinColumn(name = "predmet_id")
    )
    @JsonIgnore
    @ToString.Exclude
    @EqualsAndHashCode.Exclude
    private Set<Predmet> predmeti = new HashSet<>();

}