Java 如何在jpa中创建两列左联接?
有没有一种方法可以在jpa中使用两列上的左连接进行查询,就像下面在普通sql中一样Java 如何在jpa中创建两列左联接?,java,hibernate,jpa,Java,Hibernate,Jpa,有没有一种方法可以在jpa中使用两列上的左连接进行查询,就像下面在普通sql中一样 select combinedin1_.SHIPMENTNUMBER , shipmentin3_.INBOUNDDELIVERYITEM , combinedin1_.PURCHASEORDERNUMBER, combinedin1_.PURCHASEORDERITEMNUMBER , purchaseor2_.FACTORY from REPORT.REPOR
select
combinedin1_.SHIPMENTNUMBER ,
shipmentin3_.INBOUNDDELIVERYITEM ,
combinedin1_.PURCHASEORDERNUMBER,
combinedin1_.PURCHASEORDERITEMNUMBER ,
purchaseor2_.FACTORY
from
REPORT.REPORTLINK this_
left outer join
REPORT.COMBINEDINFO combinedin1_
on this_.COMBINEDINFOID=combinedin1_.COMBINEDINFOID
left outer join
REPORT.PURCHASEORDERINFO purchaseor2_
on this_.PURCHASEORDERINFOID=purchaseor2_.PURCHASEORDERINFOID and purchaseor2_.DELETED='N'
left outer join
REPORT.SHIPMENTINFO shipmentin3_
on this_.SHIPMENTINFOID=shipmentin3_.SHIPMENTINFOID and shipmentin3_.DELETED='N'
更具体地说,这是用纯sql编写的左连接:
left outer join
REPORT.SHIPMENTINFO shipmentin3_
on this_.SHIPMENTINFOID=shipmentin3_.SHIPMENTINFOID and shipmentin3_.DELETED='N'
这是我在JPA中的reportLink实体:
@Entity
@Table(name = "REPORTLINK")
public class ReportLinkFull implements Serializable {
private static final long serialVersionUID = -2330676941570524461L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "REPORTLINKID")
private Integer id;
@ManyToOne
@JoinColumn(name = "SALESORDERINFOID")
private SalesOrderInfo salesOrderInfo;
@ManyToOne
@JoinColumn(name = "PURCHASEORDERINFOID")
private PurchaseOrderInfo purchaseOrderInfo;
@ManyToOne
@JoinColumn(name = "SHIPMENTINFOID")
private ShipmentInfo shipmentInfo;
@ManyToOne
@JoinColumn(name = "MATERIALINFOID")
private MaterialInfo materialInfo;
@ManyToOne
@JoinColumn(name = "CUSTOMERINFOID")
private CustomerInfo customerInfo;
@ManyToOne(cascade={CascadeType.MERGE, CascadeType.PERSIST, CascadeType.REMOVE})
@JoinColumn(name = "COMBINEDINFOID")
private CombinedInfo combinedInfo;
@Version
private Integer version;
问候。我找到了答案,通过with操作员可以:
em.createQuery("SELECT rl FROM ReportLinkFull rl LEFT OUTER JOIN rl.shipmentInfo sh WITH sh.deleted = 'N' LEFT OUTER JOIN rl.purchaseOrderInfo po WITH po.deleted = 'N'").getResultList();
你可以也应该在明天发布你的解决方案作为这个问题的答案(你可以稍后接受)。