0

我有一个名为 SourceCondition 的实体(保留在 mongodb 上),其属性为 workflowID,我想删除所有具有特定 workflowID 的 SourceCondition 对象。

实体是:

@Entity
@Table(name="source_conditions")
public class SourceCondition {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY) 
    @TableGenerator(
          name = "source_conditions"
       )  
    private ObjectId id;
    public String getId() { return id.toString(); }
    public void setId(ObjectId id) { this.id = id; }   

    @Column(name="workflowID")
    private String workflowID; 

    public SourceCondition() {}

    public String getWorkflowID() {
        return workflowID;
    }
    public void setWorkflowID(String workflowID) {
        this.workflowID = workflowID;
    }

}

我执行的查询是:

        Session s = HibernateUtil.getSessionFactory().openSession();
        Query query = s.createQuery("delete from SourceCondition where workflowID = :wid");
        query.setParameter("wid", "sampleID");           
        int result = query.executeUpdate();

我收到以下错误: 查询中的语法错误:[delete from com.backend.Models.Source.SourceCondition where workflowID = :wid]

我也尝试过:

        Query query = s.createQuery("delete SourceCondition where workflowID = :wid");
        query.setParameter("wid", "sampleID");           
        int result = query.executeUpdate();

但我收到同样的错误。

======================

编辑

我绕过了这个问题:

        Query query1 = s.createQuery("from SourceCondition sc where sc.workflowID = :wid");
        query1.setParameter("wid", "sampleID");     
        List l1 = query1.list();
        Iterator<?> it1 = l1.iterator();
        while (it1.hasNext())
        {
            SourceCondition sc = (SourceCondition) it1.next();
            s.delete(sc);
            s.flush();
        }

这不是实现删除的最佳方法,但它目前有效。

4

1 回答 1

0

您需要给SourceCondition变量名称:

delete from SourceCondition sc where sc.workflowID = :wid
于 2015-06-15T21:57:35.063 回答