[hibernate-issues] [Hibernate-JIRA] Closed: (HHH-5046) Cannot nest collections of Embeddable and basic type on an entity

Cannot nest collections of Embeddable and basic type on an entity ----------------------------------------------------------------- Key: HHH-5046 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5046 Project: Hibernate Core Issue Type: New Feature Components: entity-manager Affects Versions: 3.5.0-CR-2 Environment: Hibernate-entity-manager 3.5.0-CR-2, database H2 Reporter: Christophe LANNOY Attachments: stacktrace, testEmbColl.zip We cannot nest a String collection on an embeddable element which is inside a collection or a map on an Entity : Entity manager do not start : Persistence.createEntityManagerFactory("manager1"); give us : Persistence.createEntityManagerFactory("manager1", configOverrides); ... Caused by: java.util.ConcurrentModificationException -> see stacktrace file attached Mapping is : @javax.persistence.Entity public class Entity implements Serializable { ... @ElementCollection private Map<String, EmbElement> embElements =new HashMap<String, EmbElement>(); ... } @Embeddable public class EmbElement implements Serializable { ... @ElementCollection private Set<String> sstring = new HashSet<String>(); ...} The Zip attached contains the junit class test : EmbededMapTest wich reproduce this error.