Hibernate Attributes

By default the access type of a class hierarchy is defined by the position of the @Id or @EmbeddedId annotations. If these annotations are on a field, then only fields are considered for persistence and the state is accessed via the field. If there annotations are on a getter, then only the getters are considered for persistence and the state is accessed via the getter/setter. That works well in practice and is the recommended approach.

However in some situations, you need to:

The best use case is an embeddable class used by several entities that might not use the same access type. In this case it is better to force the access type at the embeddable class level.

To force the access type on a given class, use the @Access annotation as showed below:

@Entity

public class Order {
   @Id private Long id;
   public Long getId() { return id; }
   public void setId(Long id) { this.id = id; }
   @Embedded private Address address;
   public Address getAddress() { return address; }
   public void setAddress() { this.address = address; }
}
@Entity
public class User {
   private Long id;
   @Id public Long getId() { return id; }
   public void setId(Long id) { this.id = id; }
   private Address address;
   @Embedded public Address getAddress() { return address; }
   public void setAddress() { this.address = address; }
}
@Embeddable
@Access(AcessType.PROPERTY)
public class Address {
   private String street1


Sandeep Joshi
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