java - Hibernate Criteria API多次连接

我的休眠实体如下：

@Entity
@Table(name = "EditLocks")
public class EditLock extends AuditableEntity {

    /** The document that is checked out. */
    @OneToOne
    @JoinColumn(name = "documentId", nullable = false)
    private Document document;

然后，文档如下所示：

public class Document extends AuditableEntity {
    /** Type of the document. */
    @ManyToOne
    @JoinColumn(name = "documentTypeId", nullable = false)
    private DocumentType documentType;

本质上，我要编写的查询是：

Select * from EditLocks el, Document docs, DocumentTypes dt where el.documentId = docs.id and docs.documentTypeId = dt.id and dt.id = 'xysz';

我该如何使用休眠条件API？

最佳答案

应该这样做：

Criteria criteria = getSession().createCriteria(EditLock.class);
criteria.createAlias( "document", "document" );
criteria.createAlias( "document.documentType", "documentType" );
criteria.add(Restrictions.eq("documenttype.id", "xyz");

您需要添加别名才能到达具有要查询其属性的对象。