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

[Adrian Hummel (JIRA)]

MetadataContext#registerAttribute does not recognize inherited fields
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                 Key: HHH-5024
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5024
             Project: Hibernate Core
          Issue Type: Bug
          Components: entity-manager, metamodel
    Affects Versions: 3.5.0-CR-2
         Environment: Hibernate 3.5.0-CR-2, JPA Modelgen 1.0.0-CR-1
            Reporter: Adrian Hummel
            Priority: Critical
         Attachments: bugreport.zip

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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