Hibernate extend entity for same table

Question

I have a table with two fields I would like to have two objects.

First one only has field1

@Entity(name = \"simpleTableObject\")
@Table(name = \"someTabl         


        

Answer 1

You can have a common superclass for both entities:

@MappedSuperclass
public abstract class AbstractTableObject {
 // common mappings
}

@Entity
@Table(name = "someTable")
public class TableObject extends AbstractTableObject {
 // remaining mappings
}

@Entity
@Table(name = "someTable")
@Immutable
public class SimpleTableObject extends AbstractTableObject {
 // nothing here
}

Additionally, you can mark the SimpleTableObject entity to be @Immutable as shown above, so that it cannot be persisted or updated accidentally.