@Entity
public class UserTable implements Serializable {
	private static final long serialVersionUID = 8407966960002220704L;
	
	@Id
	@GeneratedValue
	private long id;
	@OneToMany(mappedBy="test", orphanRemoval=true, cascade=CascadeType.ALL, fetch=FetchType.EAGER)
	private List<Row> rows;

}

@Entity
public class Row implements Serializable {
	private static final long serialVersionUID = 8285524874443728506L;
	
	@Id
	@GeneratedValue
	private long id;
	@ManyToOne(optional=true)
	private TestEntity test;

}

{
"rows": [
     ]
}

{
	"id":10,
	"_relationships":[
		{
			"_link":{
				"href":"http://localhost:8080/app/persistence/pu/entity/TestEntity/10/rows",
				"rel":"rows"
			}
		}
	],
	"rows":[
	]
}

{
	"]
}