Duplicate mapping error: org.hibernate.Duplicatemappingexceptionn

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Duplicate mapping error: org.hibernate.Duplicatemappingexceptionn

Asked 9 years, 3 months ago

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I am using Hibernate 5 and am having the following problem:

Caused by: org.hibernate.DuplicateMappingException: duplicate import: br.edu.unifeob.entidades.apuracao.Avaliacao refers to both br.edu.unifeob.entidades.apuracao.Avaliacao and br.edu.unifeob.entidades.apuracao.Serie (try using auto-import="false")
at org.hibernate.cfg.Configuration$MappingsImpl.addImport(Configuration.java:2892)
at org.hibernate.cfg.annotations.EntityBinder.bindEntity(EntityBinder.java:401)

I have tried to write down my entities this way but it did not help:

@Entity(name="br.edu.unifeob.entidades.apuracao.Avaliacao")
@Table(name="Avaliacao")
public class Avaliacao {
...
}

@Entity(name="br.edu.unifeob.entidades.base.Avaliacao")
@Table(name="Avaliacao")
public class Avaliacao{
...
}

The two classes are in different persistence units. Does anyone know what it might be? I already searched and the only way I could solve the problem is to use the name of the @Entity annotation to differentiate the entities.

What is the complete code of these 2 entities "Evaluation"?

– Dherik

2015/08/14 at 12:29
Where does this br.edu.unifeob.entidades.apuracao.Serie come from ?

– jpkrohling

2015/08/14 at 12:38
1

You cannot have 2 classes "representing" the same table

– Pedro Laini

2015/08/14 at 20:31
@Pedrolaini, I’ve never tried, but I think it’s possible.

– Dherik

2015/11/18 at 18:03
how is the java class that configures or persistence.xml?

– Sidney

2016/04/25 at 00:12
If the two classes are in different persistence units, you could map them to a table of the same name. The point is, how are you injecting or creating the entityManagers in your application?

– Giuliana Bezerra

2016/09/09 at 22:30

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by ricktg • **116** points · Answer 1 · 2016-12-05T13:34:43+00:00

One of these entities shall be used only as a reading?
If yes, you can include the @Immutable in this entity:

@Entity
@Table(name="Avaliacao")
public class Avaliacao {
...
}

@Entity
@Table(name="Avaliacao")
@Immutable
public class Avaliacao {
...
}

As an example here: https://stackoverflow.com/questions/29007676/how-to-map-two-hibernate-entities-on-the-same-database-table