[hibernate-issues] [Hibernate-JIRA] Closed: (HHH-4923) EnitityManager returning lazy proxy

EnitityManager returning lazy proxy ----------------------------------- Key: HHH-4923 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4923 Project: Hibernate Core Issue Type: Bug Components: core Affects Versions: 3.3.2 Environment: JBoss - MySQL 5.1 - JDK6 Reporter: Billy Bob Depending on the order I read entities, sometimes an em.find() returns a javassist proxy. I have the following simplified entity mapping: class A { @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private int id; } class B extends A { } class C extends A { @ManyToOne(fetch=FetchType.LAZY) @JoinColumn(nullable=false) private A ref; } For both scenarios, I have an entity of type B stored with id 20 and an entity of type C stored with id 30 with a reference to the first object with id 20. Scenario - 1: em.find(A.class, 30); // Returns type C, lazy reference of B is loaded into session em.find(A.class, 20); // Error: Returns javassist proxy instead of type B Scenario - 2: em.find(A.class, 20); // Returns type B, since not loaded by C lazy reference em.find(A.class, 30); // Returns type C Should a call to EntityManager.find() ever return a lazy proxy?