JAX-RS, An Object with One-TO-Many - Seeing the 'aggregated' object when fetching XML

[Ingi Erlings]

Hello,

Using JAX-RS, and using RestEasy ( do not think that matters here, or it could matter ....)

Having 2 Entities, Post and Tag
One Post can have many Tag:s

The Post object looks something like this :

@Entity
@Table(name = "posts")
@NamedQueries({
    @NamedQuery(name = Post.FIND_BY_UUID, query = "SELECT c FROM Post c  where c.uuid = :uuid")
})
@XmlRootElement
@Inheritance(strategy = InheritanceType.JOINED)
public abstract class Post implements Serializable {

@Id
@Column(name = "UUID")
private String uuid;

@Column(name = "OWNER", length = 255)
private String owner;

@Column(name = "VISIBILITY", length = 50)
private String visibility;

@OneToMany(mappedBy = "post", cascade = CascadeType.ALL, fetch = FetchType.EAGER)
private List<Tag> tags;

    public List<Tag> getTags() {
        if (tags != null) {
            tags.size(); // this is needed for IndirectList: not instantiated
            return Collections.unmodifiableList(tags);
        } else {
            return Collections.<Tag>emptyList();
        }
    }

The Tag object looks something like this :

@Entity
@Table(name = "tag")
@XmlRootElement
public class Tag implements Serializable {

    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Basic(optional = false)
    @Column(name = "ID")
    private Integer id;

    @Size(max = 255)
    @Column(name = "TAG_KEY")
    private String tagKey;

    @Size(max = 245)
    @Column(name = "TAG_POINTER")
    private String tagPointer;

    @Transient
    private Date dateCreated;
    
    @ManyToOne
    @JoinColumn(name = "POST_UUID")
    private Post post;

When fetching the Post, using the Query, I can see the following - when calling the restful-service:

<post>
<owner>ingo</owner>
<uuid>d1c55481-6a6a-4e42-b64a-daaadcf9fd52</uuid>
<visibility>private</visibility>
</post>

The question is :
I can see that this actual Post has 2 tags when looking at the code in debug mode.
The relationship is working, I have stuff in my database.

Why can't I see the List with those 2 tags in my XML-feed - The List with tags belongs to the Post-object and should be visible , should not the @XmlRootElement on the tag-object solve this ?

Best regards, Ingo