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https://issues.apache.org/jira/browse/OPENJPA-871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12674835#action_12674835
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Fay Wang commented on OPENJPA-871:
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1/ The item below has not yet been checked in/implemented:
    - Spec 2.4.1.2 Ex 5(a) and Ex 6(a)

    These two examples are for the IdClass rule in Spec 2.4.1.1. (page 27)
    "If an Id attribute in the entity is a many-to-one or one-to-one reference 
to a parent entity, the type of the corresponding attribute in the id class 
must be the same Java type as the id class or embedded id of the parent entity 
(if the parent entity has a composite primary key) or the type of the Id 
attribute of the parent entity (if the parent entity has a simple primary key)."
   
    The implementation of this item will be deferred to Iteration 4.

2/ Issue that requires further clarification: Spec 2.4.1.2 Ex 2(b)
    suggested change is to add @Embeddable to EmployeeId to make it visible to 
DependentId. 




> Support derived identity 
> -------------------------
>
>                 Key: OPENJPA-871
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-871
>             Project: OpenJPA
>          Issue Type: Sub-task
>            Reporter: Fay Wang
>            Assignee: Fay Wang
>             Fix For: 2.0.0
>
>


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