[hibernate-issues] [Hibernate-JIRA] Reopened: (HHH-5393) @MapKey with embeddable value

[Gail Badner (JIRA)]

     [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-5393?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gail Badner reopened HHH-5393:
------------------------------


> @MapKey with embeddable value
> -----------------------------
>
>                 Key: HHH-5393
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5393
>             Project: Hibernate Core
>          Issue Type: Bug
>          Components: annotations
>    Affects Versions: 3.5.3
>         Environment: Hibernate 3.5.3, PostgreSQL 8.4.3
>            Reporter: Harald Wellmann
>            Assignee: Gail Badner
>
> Map<Basic, Embeddable> does not work, when the map key is a persistent field of the value. The map key shall not be represented as a separate table column, this is why the example uses @MapKey and not @MapKeyColumn.
> Example:
> {code:java}
> @Embeddable
> public class LocalizedString {
>     private String language;
>     private String text;
> } 
>  
> @Entity
> public class MultilingualString {
>     @Id
>     private long id;
>     @ElementCollection(fetch=FetchType.EAGER)
>     @MapKey(name = "language")
>     @CollectionTable(schema = "jpa", name = "multilingual_string_map", 
>                      joinColumns = @JoinColumn(name = "string_id"))
>     private Map<String, LocalizedString> map = new HashMap<String, LocalizedString>();
> }
> {code}
> Hibernate appears to expect an Entity as map value: 
>  org.hibernate.AnnotationException: Associated class not found: LocalizedString
> Detailed discussion of this use case:
> http://hwellmann.blogspot.com/2010/07/jpa-20-mapping-map.html

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