[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-5024) MetadataContext#registerAttribute does not recognize inherited fields

[Emeric Fillatre (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-5024?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=45199#comment-45199 ] 

Emeric Fillatre commented on HHH-5024:
--------------------------------------

Sorry if I understand this badly but as for me, the problem does not seem to be in the metamodel classes generation. I used to create those metamodel classed by myself (due to problem in generation time) and the issue appear when using those metamodel in query.
I don't have time right now to export un simple example (simplier than composite ID, just an embedded field with request based on its value) but i will come back to it soon

> MetadataContext#registerAttribute does not recognize inherited fields
> ---------------------------------------------------------------------
>
>                 Key: HHH-5024
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5024
>             Project: Hibernate ORM
>          Issue Type: Bug
>          Components: entity-manager, metamodel
>    Affects Versions: 3.5.0-CR-2, 3.5.1, 4.0.0.Final
>         Environment: Hibernate 3.5.0-CR-2, JPA Modelgen 1.0.0-CR-1
>            Reporter: Adrian Hummel
>            Assignee: Steve Ebersole
>             Fix For: 4.1.0
>
>         Attachments: bugreport.zip, hhh-5024.zip, hhh-5024.zip
>
>          Time Spent: 6.85h
>
> The embeddable class {{CustomerId}} (see attached ZIP) inherits from the base class {{AbstractIdentity}} (annotated with {{@MappedSuperclass}}). The metamodel classes for these two classes are correctly generated:
> {code:title=AbstractIdentity_.java|borderStyle=solid}
> import javax.persistence.metamodel.SingularAttribute;
> import javax.persistence.metamodel.StaticMetamodel;
> @StaticMetamodel(AbstractIdentity.class)
> public abstract class AbstractIdentity_ {
> public static volatile SingularAttribute<AbstractIdentity, String> id;
> }
> {code}
> and
> {code:title=CustomerId_.java|borderStyle=solid}
> import javax.persistence.metamodel.StaticMetamodel;
> @StaticMetamodel(CustomerId.class)
> public abstract class CustomerId_ extends AbstractIdentity_ {
> }
> {code}
> When building the entity manager factory, {{MetadataContext#registerAttribute}} (line 378) tries to resolve the field {{CustomerId_.id}} using {{Class#getDeclaredField}}. This results in a {{NoSuchFieldException}} because the field is declared in the super class {{AbstractIdentity_}}.
> Proposed solution: Since all field declarations in the metamodel are public, the {{Class#getField}} method should be used instead.

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