一对一关系：如何自动创建依赖关系对象？

Question

我是JPA / Hibernate的初学者。我有两个必须在一对一关系中链接的课程。我有这门课：

    @Entity
    @Table (name = "doc")
    public class Document {

        @Id
        @Basic(optional = false)
        @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "doc_cd_doc_seq")
        @SequenceGenerator(name = "doc_cd_doc_seq", sequenceName = "doc_cd_doc_seq")
        @Column(name = "cd_doc")
        private Long code;

 }

当我构造这个时，我想用序列生成器创建他的依赖项（另一个对象，另一个表）：

    @Entity
    @Table (name= "attached_doc_info")
    public class AttachedDocInfo {
        @Id
        @Basic(optional = false)
        @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "attached_doc_info_cd_attached_doc_info_seq")
        @SequenceGenerator(name = "attached_doc_info_cd_attached_doc_info_seq", sequenceName = "attached_doc_info_cd_attached_doc_info_seq")
        @Column(name = "acd_attached_doc_info)
        private Long code;

        @JoinColumn(name = "cd_doc", referencedColumnName = "cd_doc")
        @OneToOne(fetch = FetchType.LAZY, cascade = CascadeType.REMOVE, orphanRemoval = true)
        private Document document;

    ...
    } 

我的问题是，当我创建Document时，AttachedDocInfo对象不会在他的表中自动创建（attached_doc_info表）。你们能告诉我哪里出错了吗？ TY！