public class WallPost{
	@Id
	@GeneratedValue(strategy = GenerationType.AUTO)
	@Column(name = "postId", updatable = false, insertable = false)
	//Storing the id to deal with https://blog.trifork.com/2012/01/22/query-time-joining-in-lucene/
	@Field(name="baseCommentId",index=Index.YES,store=Store.YES,analyze=Analyze.NO,bridge=@FieldBridge(impl=LongBridge.class))
	@DocumentId
	public Long getId() {
		return id;
	}
	@ManyToOne(fetch=FetchType.LAZY,optional=true)
	@JoinColumn(name="FK_PostId",nullable=true,insertable=true,updatable=false)
    @IndexedEmbedded(includePaths={"id","type","baseCommentId"},indexNullAs=Field.DEFAULT_NULL_TOKEN)
	@ContainedIn
	public WallPost getPost() {
		return post;
	}

.createFullTextQuery(
	mj.createQuery(), 
WallPost.class)
.setProjection(ProjectionConstants.ID, "post.id")