The EJB3 specification allows you to embed plain Java objects within your entities and map the properties of this embedded value object to columns within the entity's table.

The org.jboss.tutorial.embeddable.bean.Customer entity encapsulates the name of the customer in the org.jboss.tutorial.embeddable.bean.Name value object. The org.jboss.tutorial.embeddable.bean.Name value object must be tagged with the @Embeddable annotation.

	
@Embeddable
public class Name implements java.io.Serializable
	
	

The properties of Name must then be mapped to columns within Customer's table.

	
@Embedded
@AttributeOverrides({
   @AttributeOverride(name = "first", column = {@Column(name = "FIRST_NAME")}),
   @AttributeOverride(name = "last", column = {@Column(name = "LAST_NAME")})
})
public Name getName()
{
   return name;
}