Issue with the Hibernate Search index

Hibernate Search
1

Hello,

we have an issue with the Hibernate Search index - regarding these three entities (root is only listed because it is the index root, but probably isn’t part of the problem).

@Indexed
@Entity
Root {

    @IndexedEmbedded
    @OneToOne(fetch = FetchType.LAZY, cascade = CascadeType.ALL, mappedBy = "root")
    private Info info;
    
    [...]
}

@Entity
@Table(name = "Info")
Info {

    @IndexedEmbedded
    @ManyToMany(fetch = FetchType.LAZY)
    @JoinTable(name = "Info_2_User_Data", joinColumns = {
        @JoinColumn(name = "Info_ID", referencedColumnName = "Info_ID", columnDefinition = "INT(7)")},
            inverseJoinColumns = {
        @JoinColumn(name = "User_ID", referencedColumnName = "User_ID", columnDefinition = "INT(7)")})
    private Set<User> userList = new HashSet<>();

    @IndexedEmbedded
    @ManyToOne
    @JoinColumn(name = "Info_MainUser", referencedColumnName = "User_ID", columnDefinition = "INT(7)")
    private User mainUser;
    
    [...]
}

@Entity
@Table(name = "User_Data")
public class User {

    @FullTextField(name = "user_name")
    @Column(name = "User_Name", length = 20)
    private String name;
    
    @ManyToMany(mappedBy = "userList")
    private Set<Info> infoForUserList = new HashSet<>();
    
    @OneToMany(mappedBy = "mainUser")
    private Set<Info> infoForMainUser = new HashSet<>();
    
    [...]
}

As you can see there are two different relations between Info and User. If we change via our application the userList, everything is fine - new entries are added to the index. Buf if we do the same with the mainUser, the index is not updated. The DAO-Operation is in both cases the same - we edit Info and update the entity. In the database all changes are stored correctly.
My first assumption was that Hibernate has a problem because it gets confused with the two relations. So I removed the userList completely. But still no index updates for the mainUser. I also tried it without the infoForMainUser in User (we don’t need this bidirectional relation, it’s only for Hibernate Search/Lucene), but couldn’t make it work - it seems like I don’t understand extractions and how to configure it. But I don’t know if it really would fix the problem.

I’m not sure, if it is important, but these are the names of the indexes:
info.mainUser.user_name
info.userList.user_name

Do you have any idea, why the index isn’t updated for mainUser?

Thanks in advance and best regards.

2

Hello,

I’m going to need more information about what the “DAO-Operation” is exactly. What is the exact code of that operation?

I tried to reproduce your problem, to no avail: hibernate-test-case-templates/YourIT.java at reindexing · yrodiere/hibernate-test-case-templates · GitHub. Maybe you can send a pull request to edit that reproducer and make it fail?

3

Hi Yoann,

thank you for your response. My colleague is currently on vacation, so I’ll answer.
With your hint to look into the DAO operation, I could solve the issue. I also found out that the userList wasn’t always updated correctly.

So the problem was that we use a EntityManager Producer for injection, which looks like this:

@Produces
@RequestScoped
public EntityManager getEntityManager() {
	return entityManagerFactory.createEntityManager();
}

public void destroy(@Disposes final EntityManager entityManager) {
	entityManager.close();
}

(entityManagerFactory is also injected here in the class by a applicationscoped producer)

And he was the triggered DAO operation:

@Override
public Info updateInfo(final Info info) {
	entityManager.getTransaction().begin(); // this is the injected EntityManager
	final Info updated = entityManager.merge(info);
	entityManager.getTransaction().commit();
	return updated;
}

I changed the injected EntityManager and use now the EntityManagerFactory instead, call the createEntityManager() method and close it manually after the commit. So there is a difference wether I call the create directly or via the injection.

Thanks again.