Hibernate Annotations自引用类? [英] Hibernate Annotations self referencing class?

问题描述

我已经定义了这个Entity类，但是它似乎没有将子级保存到数据库中.有任何想法吗?

I have defined this Entity class, but it does not seem to save the children to the database. Any ideas?

@Entity
public class CategoryModel implements Model<CategoryModel>, Serializable {

    private static final long serialVersionUID = -4520507504770029807L;

    @Id
    @Field(index = Index.UN_TOKENIZED, store = Store.NO)
    private String id;

    @NotNull
    private String name;

    @ManyToOne
    private CategoryModel parent;

    @OneToMany(cascade = CascadeType.ALL, mappedBy = "parent")
    private List<CategoryModel> children;

    public List<CategoryModel> getChildren() {
        return children;
    }

    public String getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public CategoryModel getParent() {
        return parent;
    }

    public void setChildren(List<CategoryModel> children) {
        this.children = children;
    }

    public void setId(String id) {
        this.id = id;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setParent(CategoryModel parent) {
        this.parent = parent;
    }

}

非常感谢， Finbarr

Many thanks, Finbarr

推荐答案

这是因为反向关联从不持久；我可以说这是"mappedBy"属性的反向关联

That's because the reverse association is never persisted; I can tell this is the reverse association beacause of the "mappedBy" attribute

这篇关于Hibernate Annotations自引用类?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！