我有一个像这样的DocMovement类:
@Entity
@Table(name = "DOC_MVMNT")
public class DocMovement {
@Id
@GeneratedValue
@Column(name = "MVMNT_ID")
private int mvmnt_id;
@ManyToOne
@JoinColumn(name = "BARCODE")
public DocMaster docMaster;
// other fields and getters setters
}
DocMaster类是这样的:
@Entity
@Table(name="DOC_MASTER")
public class DocMaster {
@Id
@NotNull
@Column(name = "BARCODE")
private String barcode;
@Column(name = "DOC_NO")
private String docNo ;
@Column(name="DOC_TYPE")
private String docType;
@Column(name="STATUS")
private String status;
// other fields and getters setters
}
当我尝试运行以下代码时:
Criteria criteria = session.createCriteria(DocMovement.class,"documentMovement");
criteria.add(Restrictions.eq("documentMovement.recipientDetail.empId", empId));
criteria.add(Restrictions.eq("documentMovement.isCurrent", true));
criteria.add(Restrictions.ne("documentMovement.docMaster.status",FMSConstants.CLOSED_STATUS));
criteria.add(Restrictions.ne("documentMovement.docMaster.status",FMSConstants.DISPOSED_STATUS));
List<DocMovement> documentsHeld = (List<DocMovement>) criteria.list();
然后我得到以下异常:
[org.hibernate.QueryException: could not resolve property:
docMaster.status of: com.fms.persistence.DocMovement] with root cause
org.hibernate.QueryException: could not resolve property:
docMaster.status of: com.fms.persistence.DocMovement
在其他情况下,我尝试使用上面显示的条件进行查询,查询运行正常,但我无法理解在这种情况下我做错了什么。我也尝试过使用eager fetch,之前我没有使用别名,所以我也尝试使用别名。
请帮我解决问题!!!
答案 0 :(得分:4)
尝试添加别名:
criteria.createAlias("documentMovement.docMaster", "docMaster")
稍后再打电话
criteria.add(Restrictions.ne("docMaster.status",FMSConstants.CLOSED_STATUS));
答案 1 :(得分:2)
您必须先向docMaster添加别名
答案 2 :(得分:1)
我认为这是与不正确的枚举的比较。您正在尝试将枚举与String进行比较。这条线似乎错了:
criteria.add(Restrictions.ne("documentMovement.docMaster.status",FMSConstants.CLOSED_STATUS));
由于documentMovement.docMaster.status
被定义为String,因此可以尝试:
criteria.add(Restrictions.ne("documentMovement.docMaster.status",FMSConstants.CLOSED_STATUS.toString()));
criteria.add(Restrictions.ne("documentMovement.docMaster.status",FMSConstants.DISPOSED_STATUS.toString()));