[hibernate-issues] [Hibernate-JIRA] Created: (ANN-774) Querying a @OneToOne to an entity that inherit a @MappedSuperclass, the @DiscriminatorValue isn't used

[Diego Plentz (JIRA)]

Querying a @OneToOne to an entity that inherit a @MappedSuperclass, the @DiscriminatorValue isn't used
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                 Key: ANN-774
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-774
             Project: Hibernate Annotations
          Issue Type: Bug
          Components: binder
    Affects Versions: 3.4.0.GA
            Reporter: Diego Plentz
            Priority: Critical


If you have a class with a @OneToOne relation to an entity that inherit a @MappedSuperclass, and you do a query like the following, the @DiscriminatorValue isn't used if it's mapped eagerly.

Criteria c = getSession().createCriteria(Foo.class)
.createAlias("relatedOneToOne", "relatedOneToOne");

-----
@Entity
public class Foo {
	@OneToOne(fetch = FetchType.LAZY)
	@JoinColumn(name = "cdfoo")
	private RelatedOneToOne relatedOneToOne;
...
}

-----

@Entity
@Table(name = "bar")
@Inheritance(strategy=InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(
    name="cddiscriminator",
    discriminatorType=DiscriminatorType.INTEGER)
public class Father {
..
}

-----

@Entity
@DiscriminatorValue("3")
public class RelatedOneToOne extends Father {
...
}


If you let the association to load "lazyly", it works and the DiscriminatorValue is used in the generated sql.

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