Hibernate 不接受 ManyToOne 作为 Id

Question

Hibernate 不同意这种结构。我错过了什么吗？它引发的错误：

org.hibernate.MappingException：无法在进程中找到具有逻辑名称的列：version_id

关于如何在保持复合键结构的同时修复的任何建议？

数据模型

版本有很多动作

版本有很多进程；

public class Version {
    @Id
    @Column(name = "id")
    public int Id;
}

动作有一个过程

动作只有一个版本

public class Action {
    // Action has a composite key (ID and Version ID)

    @Id
    @Column(name = "id")
    public int id;

    @Id
    @ManyToOne
    @JoinColumn(name = "version_id")
    public Version version;

    @ManyToOne
    @JoinColumns({
        @JoinColumn(name = "process_id", referencedColumnName = "id"),
        @JoinColumn(name = "version_id", referencedColumnName = "version_id")
    })
    public Process process;
}

进程有很多动作

进程只有一个版本

    public class Process {
    // Process has a composite key (ID and Version ID)

    @Id
    @Column(name = "id")
    public int id;

    @Id
    @ManyToOne
    @JoinColumn(name = "version_id")
    public Version version;

    @OneToMany(fetch = FetchType.LAZY, mappedBy = "process", targetEntity = Action.class)
    public List<Action> actions= new ArrayList<Action>();
}

模型图片： https://dl.dropboxusercontent.com/u/2294873/model.jpg

Answer 1

在 Action 类中有两个名为 version_id 的列。尝试将第二个 version_id 重命名为 process_version_id：

public class Action {
    // Action has a composite key (ID and Version ID)

    @Id
    @Column(name = "id")
    public int id;

    @Id
    @ManyToOne
    @JoinColumn(name = "version_id")
    public Version version;

    @ManyToOne
    @JoinColumns({
        @JoinColumn(name = "process_id", referencedColumnName = "id"),
        @JoinColumn(name = "process_version_id", referencedColumnName = "version_id")
    })
    public Process process;
}