[hibernate-issues] [Hibernate-JIRA] Created: (HHH-4902) Handle JPA 2 requirement of setting id attribute to non-null with its equivalent of foreign-generator

[Steve Ebersole (JIRA)]

Handle JPA 2 requirement of setting id attribute to non-null with its equivalent of foreign-generator
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                 Key: HHH-4902
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4902
             Project: Hibernate Core
          Issue Type: Bug
          Components: core
            Reporter: Steve Ebersole
            Assignee: Steve Ebersole
             Fix For: 3.5.0-Next


JPA 2 defines an equivalent of the Hibernate foreign generator.  However the spec implies (via a badly worded footnote) that users can manually set a value for that id attribute.  However the spec is very clear that it is the association which drives the persisted id value, not the id attribute.

So basically, the user can manually set the id value but it is completely expected to be ignored.

Unfortunately that messes up the Hibernate notion of unsaved-value (how it distinguishes transient entities from detached entities).  So we need to account for this in the persist listeners.



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