[hibernate-issues] [Hibernate-JIRA] Created: (HHH-6924) Assertion Failure when building metadata of a class with an Identifier inherited from a MappedSuperclass
Assertion Failure when building metadata of a class with an Identifier inherited from a
MappedSuperclass
--------------------------------------------------------------------------------------------------------
Key: HHH-6924
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6924
Project: Hibernate Core
Issue Type: Bug
Affects Versions: 4.0.0.Final
Environment: Hibernate Core 4.0.0.Final
Hibernate Commons Annotations 4.0.1.Final
PostgreSQL 9.1.2
Reporter: Tom Coogan
Priority: Critical
Our model classes inherit their identifiers from a MappedSuperclass as follows:
{code}
@MappedSuperclass
public abstract class GenericModel {
protected Long id;
@Id
@GeneratedValue(generator="postgres-seq")
@GenericGenerator(name="postgres-seq", strategy =
"com.zzz.zzz.util.PostgresSequenceGenerator")
@Column(name = "id", nullable = false)
public Long getId() { return this.id; }
public void setId(Long id) { this.id = id; }
}
@Entity
@Table(name="users")
public class User extends GenericModel {
...
}
{code}
When building the metadata for these classes, the following AssertionFailure occurs:
{noformat}
org.hibernate.AssertionFailure: The root entity needs to specify an identifier
at
org.hibernate.metamodel.source.annotations.entity.RootEntitySourceImpl.getIdentifierSource(RootEntitySourceImpl.java:63)
at org.hibernate.metamodel.source.binder.Binder.bindIdentifier(Binder.java:309)
at org.hibernate.metamodel.source.binder.Binder.makeRootEntityBinding(Binder.java:183)
at
org.hibernate.metamodel.source.binder.Binder.createBasicEntityBinding(Binder.java:159)
at org.hibernate.metamodel.source.binder.Binder.doCreateEntityBinding(Binder.java:147)
at org.hibernate.metamodel.source.binder.Binder.createEntityBinding(Binder.java:132)
at org.hibernate.metamodel.source.binder.Binder.processEntityHierarchy(Binder.java:108)
at
org.hibernate.metamodel.source.annotations.AnnotationMetadataSourceProcessorImpl.processMappingMetadata(AnnotationMetadataSourceProcessorImpl.java:134)
at
org.hibernate.metamodel.source.internal.MetadataImpl.bindMappingMetadata(MetadataImpl.java:195)
at
org.hibernate.metamodel.source.internal.MetadataImpl.<init>(MetadataImpl.java:165)
at
org.hibernate.metamodel.source.internal.MetadataBuilderImpl.buildMetadata(MetadataBuilderImpl.java:83)
at org.hibernate.metamodel.MetadataSources.buildMetadata(MetadataSources.java:112)
{noformat}
It appears that this is happening because EntityClass is always instantiated with a null
parent from EntityHierarchyBuilder.createEntityHierarchies(AnnotationBindingContext
bindingContext) line 105:
{code}
EntityClass rootEntityClass = new EntityClass(
rootClassInfo,
null,
defaultAccessType,
hierarchyInheritanceType,
bindingContext
);
{code}
and therefore EntityClass.findIdAnnotations(DotName idAnnotationType) never loops through
the parent hierarchy to find the @Id annotation in the MappedSuperclass.
This was working in Hibernate 3.6.*.
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