Follow.java

package com.example.devSns.domain;

import jakarta.persistence.*;
import lombok.*;

@Entity
@Getter
@NoArgsConstructor(access = AccessLevel.PROTECTED)
@Table(
        name = "follow",
        uniqueConstraints = @UniqueConstraint(columnNames = {"follower_id", "following_id"})
)
public class Follow {

    @Id @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    // 나를 기준으로: 내가 팔로우 하는 사람
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "follower_id", nullable = false)
    private Member follower;

    // 내가 팔로우 당하는 사람
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "following_id", nullable = false)
    private Member following;

    @Builder
    private Follow(Member follower, Member following) {
        this.follower = follower;
        this.following = following;
    }
}