[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-4720) Improve javax.persistence.metamodel.Attribute support

[Steve Ebersole (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-4720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=35018#action_35018 ] 

Steve Ebersole commented on HHH-4720:
-------------------------------------

There was a question in regards to javax.persistence.metamodel.Attribute and declared primitive types.  The spec is unfortunately silent on this subject.  It makes the most sense imo to report the primitive type here so that is what our implementation does.

This comes into play if you call any of the following methods:
getBindableJavaType()
getJavaType()
getType().getJavaType()

> Improve javax.persistence.metamodel.Attribute support
> -----------------------------------------------------
>
>                 Key: HHH-4720
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4720
>             Project: Hibernate Core
>          Issue Type: Bug
>          Components: entity-manager, metamodel
>    Affects Versions: 3.5.0-Beta-2
>            Reporter: Steve Ebersole
>            Assignee: Steve Ebersole
>             Fix For: 3.5
>
>          Time Spent: 2 days, 6 hours, 56 minutes
>  Remaining Estimate: 0 minutes
>
> 1) o.h.ejb.metamodel.AttributeFactory is currently using Type.getReturnedClass() from the o.h.type.Type associated with the attibute as it's javaType.  That is not accurate in all cases, especially in subclassing scenarios like java.util.Date and the java.sql variants.  We should instead look at the Member for the attribute to determine the java type (perhaps applying some validation of the "assignability").
> 2) Emmanuel has said there are a few cases where there is a discrepancy between how Hibernate captures information versus how the JPA metamodel package expects to report it.  E.g. @ManyToOne @JoinTable where the AnnotationBinder hands this to core as a many-to-many but JPA metadata still expects @ManyToOne to be reported.

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