[英]How fetch record in Hibernate One to Many relationship
我有2個POJO類: Ownerdetials
(父表)和Vehiclemaster
(子表)。 我想獲取屬於Vehicle
表的所有oname
(表示所有者名稱)。
我的課程:
Ownerdetails.java:
public class Ownerdetails implements java.io.Serializable {
private Integer ownerid;
private String oname;
private String panno;
private String mobile;
private String address;
private String pincode;
private String city;
private String state;
private String country;
private String accno;
private String bankname;
private String branch;
private String ifccode;
private Set vehiclemasters = new HashSet(0);
//Setter and Getter method
}
Vehiclemaster.java:
public class Vehiclemaster implements java.io.Serializable {
private Integer vid;
private Ownerdetails ownerdetails;
private String vno;
private String vname;
private String driverlicense;
private String unladenWeight;
private String drivername;
private String vtype;
private String inscompname;
private String instype;
private String insfrom;
private String insto;
private String fitnessdatefrom;
private String fitnessdateto;
//Setter and Getter Method
}
以下是我的SQL查詢,如何在Hibernate HQL查詢中轉換?
select ownerdetails.oname from ownerdetails,vehiclemaster
WHERE ownerdetails.ownerid=vehiclemaster.ownerid;
我用谷歌搜索,但是沒有得到正確的結果。
對應
public class Ownerdetails implements java.io.Serializable {
@Id
private Integer ownerid;
@OneToMany(mappedBy = "ownerdetails")
private Set<Vehiclemaster> vehiclemasters = new HashSet(0);
}
public class Vehiclemaster implements java.io.Serializable {
@Id
private Integer vid;
@ManyToOne
@JoinColumn(name = "ownerid")
private Ownerdetails ownerdetails;
}
詢問
select distinct od.oname
from Ownerdetails od
inner join od.vehiclemasters vm
where vm.vname = 'name' // optional
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