jpa - Fix for Hibernate error "Use of the same entity name twice"

Question

How you fix the following Hibernate error:

What does "Use of the same entity name twice".

Answer 1

This exception occures when you have more then one @Entity with the same class's name or explicit name. To fix the issue you have to set different explicit names for each entity.

Example of error case:

package A;

@Entity
class Cell{
 ...   
}


package B;

@Entity
class Cell{
 ...   
}

Solution example: package A;

@Entity(name="a.Cell")
class Cell{
 ...   
}


package B;

@Entity(name="b.Cell")
class Cell{
 ...   
}

So, to use them in HQL you have to write

...createQuery("from a.Cell")...