[hibernate-issues] [Hibernate-JIRA] Created: (HHH-5390) Index column on inverse List should throw a warning

[Chris Bredesen (JIRA)]

Index column on inverse List should throw a warning
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                 Key: HHH-5390
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5390
             Project: Hibernate Core
          Issue Type: Improvement
          Components: annotations
    Affects Versions: 3.5.3
            Reporter: Chris Bredesen


The manual correctly warns against trying to map an indexed inverse collection on a List.  However, a configuration containing this invalid mapping builds successfully but causes null values to be inserted for the index column.

Hibernate should be helpful and, if possible, throw a warning to the user (perhaps an error?) that explains the invalid combination.  Here is an example that would run but produce invalid results:

@Entity
public class Parent {
    @OneToMany(mappedBy="parent")
    @OrderColumn(name="order")
    private List<Child> children;
}

@Entity
public class Child {
    @ManyToOne
    private Parent parent;
}

The above is a typical one to many with the addition of @OrderColumn.  Because Child owns the relationship, the index column is lost/ignored.  Hibernate should warn about this. 

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