Question

基本上，我不断收到编译错误提示

“原因：org.hibernate.AnnotationException：从Ticket引用PlayingInScreen的外键具有错误的列数。应为3”

我不明白这是什么意思，过去3个小时我一直在努力工作，这让我感到困惑。

import java.io.Serializable
import javax.persistence.*

@Entity
@Table(name = "Ticket")
data class Ticket(
        @Id @GeneratedValue(strategy = GenerationType.AUTO)
        @Column(name = "TicketId")
        val ticketId: Long = -1,

        @Id
        @ManyToOne
        @JoinColumn(name = "ScreenId")
        val screenId: PlayingInScreen,

        @Id
        @ManyToOne
        @JoinColumn(name = "TheaterId")
        val theaterId: PlayingInScreen,

        @ManyToOne
        @JoinColumn(name = "StartTime", nullable = false)
        val startTime: PlayingInScreen,

        @ManyToOne
        @JoinColumn(name = "StaffId")
        val staffId: Staff,

        @Column(name = "Price", nullable = false)
        val price: Double = 0.0,

        @Id
        @Column(name = "SellingTimeStamp")
        val sellingTimeStamp: Long = 0) : Serializable

import java.io.Serializable
import javax.persistence.*

@Entity
@Table(name = "PlayingInScreen")
data class PlayingInScreen(
        @Id
        @ManyToOne
        @JoinColumn(name = "ScreenId")
        val screenId: Screen,

        @Id
        @ManyToOne
        @JoinColumn(name = "TheaterId")
        val theaterId: Screen,

        @ManyToOne
        @JoinColumn(name = "MovieId")
        val movieId: Movie,

        @Id
        @Column(name = "StartTime", nullable = false)
        val startTime: Long = 0) : Serializable {

    @OneToMany(mappedBy = "startTime")
    private val startTimes: Set<Ticket> = emptySet()

    @OneToMany(mappedBy = "theaterId")
    private val theaterIds: Set<Ticket> = emptySet()

    @OneToMany(mappedBy = "screenId")
    private val screenIds: Set<Ticket> = emptySet()
}

项目要求：正在播放画面： ScreenId字符（8）Pk，Fk（屏幕） TheaterId Char（8）Pk，Fk（屏幕）

门票： TheaterId Char（8）Pk，Fk（PlayingInScreen） ScreenId字符（8）Pk，Fk（PlayingInScreen）开始时间日期不为空，Fk（PlayingInScreen）

1个表中有3个外键的问题

0 个答案: