XuqmGroup-Server/im-service/src/main/java/com/xuqm/im/entity/ImFriendEntity.java

package com.xuqm.im.entity;

import jakarta.persistence.Column;
import jakarta.persistence.Entity;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.GenerationType;
import jakarta.persistence.Id;
import jakarta.persistence.Table;
import jakarta.persistence.UniqueConstraint;
import org.hibernate.annotations.CreationTimestamp;

import java.time.Instant;

@Entity
@Table(name = "im_friends",
       uniqueConstraints = @UniqueConstraint(columnNames = {"appId", "userId", "friendId"}))
public class ImFriendEntity {

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

    @Column(nullable = false, length = 64)
    private String appId;

    @Column(nullable = false, length = 128)
    private String userId;

    @Column(nullable = false, length = 128)
    private String friendId;

    @CreationTimestamp
    @Column(nullable = false, updatable = false)
    private Instant createdAt;

    public Long getId() { return id; }
    public void setId(Long id) { this.id = id; }

    public String getAppId() { return appId; }
    public void setAppId(String appId) { this.appId = appId; }

    public String getUserId() { return userId; }
    public void setUserId(String userId) { this.userId = userId; }

    public String getFriendId() { return friendId; }
    public void setFriendId(String friendId) { this.friendId = friendId; }

    public Instant getCreatedAt() { return createdAt; }
    public void setCreatedAt(Instant createdAt) { this.createdAt = createdAt; }
}