Re: [hibernate-dev] Upgrading Hibernate Causes null index column for collection error for List

We are trying to upgrade hibernate from version 4.3.5 to 5.4.0. With this the jpa version also changes from hibernate-jpa-2.1 to jpa-2.2. After the upgrade we get the following error when using the List<> collection with @OrderColumn "javax.persistence.PersistenceException: org.hibernate.HibernateException: null index column for collection" It is a unidirectional one-to-mapping with following annotations @Entity@Table(name = "DS_GENERIC")@PrimaryKeyJoinColumn(name = "DSG_DS_ID")public class GenericConnection extends DataSourceConnection { @OneToMany(cascade = ALL, orphanRemoval = true, fetch = FetchType.EAGER) @JoinColumn(name = "DSC_DS_ID", nullable = false) @OrderColumn(name = "DSC_ORDER", updatable = false, insertable = false) List<Credentials> credentials = new ArrayList<>(); } @Entity@Table(name = "DS_CREDENTIALS")public class Credentials { @Id @GeneratedValue(generator = "uid-generator") @Column(name = "DSC_ID", updatable = false) private Long id; //...} The below test code fails //construct the connection object with credentials entityManager.persist(connection); entityManager.find(DataSourceConnection.class, id); //this call fails with the above error Note that this code worked fine with hibernate 4.3.5 and one workaround that also works is converting List to Set as below @OneToMany(cascade = ALL, orphanRemoval = true, fetch = FetchType.EAGER)@JoinColumn(name = "DSC_DS_ID", nullable = false)@OrderBy("DSC_ID")Set<Credentials> credentials = new HashSet<>(); I do not understand the root cause of this failure. Any inputs would be appreciated. Thanks. P.S - I have posted this query on stackoverflow too < https://stackoverflow.com/questions/54686603/upgrading-hibernate-causes-n... > _______________________________________________ hibernate-dev mailing list hibernate-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev