CODEWITHSUNDEEP
hibernatehql
Cichy
Cichy

Reputation: 1339

ManyToMany relations in HQL

I've got the following relations:

public class Group {

    private Integer id;
        (...)
    @ManyToMany(cascade=CascadeType.ALL)
    @JoinTable(name="rb_user_group",
               joinColumns={@JoinColumn(name="group_id")},
               inverseJoinColumns={@JoinColumn(name="user_id")})
    private List<User> users;

and : 

public class User {

    private int id;
    (...)
    @ManyToMany(cascade=CascadeType.ALL)
    @JoinTable(name="rb_user_group",
               joinColumns={@JoinColumn(name="user_id")},
               inverseJoinColumns={@JoinColumn(name="group_id")})
    private List<Group> groups;
}

What is the proper way to select all users that belong to some group where group's name is set? I tried 

session.createQuery("SELECT g.user FROM Group g WHERE g.name=:name").setString("name", group.getName());

but it doesn't help.

Upvotes: 0

Views: 299

Answers (1)

James DW
James DW

Reputation: 1815

Try:

session.createQuery("SELECT u FROM User u left join u.groups as g with g = :group").setObject("group", group);

Upvotes: 2

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