Hibernate @获取实体对象的公式
我想使用公式注释获取实体的对象Hibernate @获取实体对象的公式,hibernate,hibernate-mapping,Hibernate,Hibernate Mapping,我想使用公式注释获取实体的对象 @Formula(value="(select ar from article ar where ar.id=1)") private Article article; 尝试了很多方法。请帮忙 线程主线程org.hibernate.MappingException中的异常:无法确定以下列的类型:com.test.bean.Article,在table:Menu中:[org.hibernate.mapping.Formula从Article ar中选择ar,其中a
@Formula(value="(select ar from article ar where ar.id=1)")
private Article article;
尝试了很多方法。请帮忙
线程主线程org.hibernate.MappingException中的异常:无法确定以下列的类型:com.test.bean.Article,在table:Menu中:[org.hibernate.mapping.Formula从Article ar中选择ar,其中ar.id=1]
异常似乎表示它无法解析类型
更新实体
@Entity
public class Menu {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;
// @Formula(value="article.id=1")
// @JoinColumnOrFormula(formula=@JoinFormula("(select ar from article ar where ar.id=1)"),column=@JoinColumn(insertable=false,updatable=false))
// @Transient
// @OneToOne(fetch=FetchType.EAGER,targetEntity=Article.class)
// @JoinColumn(insertable=false,updatable=false,columnDefinition="(select ar from article ar where ar.id=1)")
@Formula(value = "(SELECT ar.id from article ar where ar.id=1)")
// @OneToOne(targetEntity=Article.class,fetch=FetchType.EAGER)
// @Fetch(FetchMode.SELECT)
private Article article;
@Formula(value = "(SELECT count(*) from article ar where ar.id=1)")
private Integer count;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Article getArticle() {
return article;
}
public void setArticle(Article article) {
this.article = article;
}
public Integer getCount() {
return count;
}
public void setCount(Integer count) {
this.count = count;
}
@Override
public String toString() {
return "Menu [id=" + id + ", article=" + article + ", count=" + count
+ "]";
}
}
@Entity(name = "article")
public class Article {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;
private String uid;
private String content;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUid() {
return uid;
}
public void setUid(String uid) {
this.uid = uid;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
@Override
public String toString() {
return "Article [id=" + id + ", uid=" + uid + ", content=" + content
+ "]";
}
}
cfg还包含映射。我面临同样的问题,下面是我用来解决这个问题的方法。 虽然我可以在发布的代码中的注释中看到相同的内容,但它对我起了作用
@ManyToOne
@JoinColumnsOrFormulas({
@JoinColumnOrFormula(formula=@JoinFormula(value="(<YOUR_QUERY>)", referencedColumnName="id")),
})
private Article article;
我不确定,但我想你正在搜索表格菜单中的文章,但它不可用。嘿,你找到解决方案了吗?@jcrada我没有用同样的方法解决这个问题。一件事是它将以同样的方式处理XML,第二件事是解决这个问题的另一种方法。我会尽快更新。