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

[Christophe LANNOY (JIRA)]

Cannot nest collections of Embeddable and basic type on an entity
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                 Key: HHH-5046
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5046
             Project: Hibernate Core
          Issue Type: Bug
          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.

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