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kannan_ekanath
 Post subject: Problem with including an Embeddable Component twice
PostPosted: Thu Nov 16, 2006 3:35 am 
Newbie

Joined: Mon Nov 21, 2005 6:15 am
Posts: 14
Hibernate version: 3.2.0

Hi,
If you have an Embeddable component two times in a class, I am getting the error Caused by: org.hibernate.MappingException: Repeated column in mapping for entity: tavant.twms.domain.claim.PartsClaim column: referred_inventory_item (should be mapped with insert="false" update="false") even after setting attribute overrides values

Code:
class A {
    @Embedded
    C someRef;
}

class B extends A {
    @Embedded
    @AttributeOverrides (...override to point to different columns...)
    C someOtherRefInstance;
}

class C {
    String name;
}

Now class B that extends A has two instances of embeddable object from it. I am having a SingleTable Hierarchy inheritance. I ensured that AttributeOverrides points to different columns. Am I missing something here? Or is it a bug?
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kannan_ekanath
 Post subject: JIRA request
PostPosted: Thu Nov 16, 2006 4:05 am 
Newbie

Joined: Mon Nov 21, 2005 6:15 am
Posts: 14
Is this related to the JIRA request,
http://opensource.atlassian.com/project ... se/HBX-815 ? I am following the annotation doc at http://www.hibernate.org/hib_docs/annotations/reference/en/html/entity.html#d0e492
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kannan_ekanath
 Post subject: Naming Strategy
PostPosted: Fri Nov 17, 2006 4:03 am 
Newbie

Joined: Mon Nov 21, 2005 6:15 am
Posts: 14
I am using the ImprovedNamingStrategy. I tried hacking around with the methods a custom improved strategy extending improved naming strategy, but of less use.
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nilram
 Post subject: Re: Problem with including an Embeddable Component twice
PostPosted: Fri Nov 17, 2006 7:21 pm 
Newbie

Joined: Fri Oct 20, 2006 2:35 pm
Posts: 1
Location: Oregon
I just ran into the same issue. We're using duplicated embedded components elsewhere, overriding to point at different columns, but they have @Basic mappings, not entity references. The one we need to duplicate that has an entity reference is causing the same mapping exception. Hibernate 3.2.0 GA.
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kannan_ekanath
 Post subject: Resolution
PostPosted: Mon Nov 20, 2006 3:53 am 
Newbie

Joined: Mon Nov 21, 2005 6:15 am
Posts: 14
Hibernate annotations comes with a DefaultComponentSafeNamingStrategy (that extends EJB3NamingStrategy) this can be used to fix this issue. However, I noticed that this tries to change most column names (foreign keys, collection table names) etc.

This will be an issue for us since we have most test data in excel sheets (with column names specified).

I just created my own ComponentSafeStrategy which sorta appends field names for component (or EmbeddedObject) references. Here again you need to change column names (in case you had some test data for your test cases) only for embedded objects (not foreign keys etc).

It seems to work, although it took some time in fixing all column names in excel sheets :)
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