Fetching revisions for an entity and its relations
Hello,
I am working on a projet using envers and am new to this framework. It works very well, but there is still one thing I can't help finding how to do.
I have a Relative entity, which inherits from a Person entity. A Person may have several Relatives (through the entity PersonRelation) and has a reference to an Address.
All there objects are Audited.
I want to list all the revisions of a given Relative, which is itself a Person. I'm using the forRevisionsOfEntity function to achieve that, however there are two things I not getting to do.
When an address is added to the Relative, a new Address revision (ADD) is generated, as well as a Person revision (MOD). Now I change the Address object, generating a new Address revision (MOD), but no Person revision, although the Relative object has been semantically changed (Address related to this Relative). Actually I just can receive from Envers the first revision of the Address. How can I use Envers to, while fetching the revisions of an Entity, fetching also the revisions of the referenced Entity to this Entity
?
Some code below if needed.
{code:java}
@Entity
@Audited
@Inheritance( strategy = InheritanceType.SINGLE_TABLE )
@DiscriminatorColumn( name = "PERSON_TYPE", discriminatorType = DiscriminatorType.INTEGER )
@Table( name = "Person" )
public class PersonImpl extends Person {
@Id
@GeneratedValue( strategy = GenerationType.SEQUENCE, generator = "PERSON_SEQ" )
@SequenceGenerator( name = "PERSON_SEQ", sequenceName = "person_seq" )
@Column( name = "PERSON_ID" )
private Long person_id;
// this column should not be used in business logic. It's only here to determine the type of the
// concrete person object.
@Column( name = "PERSON_TYPE", updatable = false, insertable = false )
private Integer personType;
private String name;
private String givenname;
@OneToOne( targetEntity = AddresseImpl.class, fetch = FetchType.LAZY, cascade = { CascadeType.ALL }, optional = true )
@JoinColumn( name = "PRIMARY_ADDRESS_ID_FK" )
private Addresse primaryAddress; // audited
}
{code}
{code:java}
@Entity
@Audited
@DiscriminatorValue( "3" )
public class RelativeImpl extends PersonImpl implements Relative {
@OneToMany( mappedBy = "relative", targetEntity = PersonRelationImpl.class, fetch = FetchType.LAZY, cascade = { CascadeType.ALL } )
@org.hibernate.annotations.Cascade( value = org.hibernate.annotations.CascadeType.ALL )
private Set<PersonRelation> personRelations = new HashSet<PersonRelation>();
@ManyToOne( targetEntity = ContactCategoryImpl.class, fetch = FetchType.LAZY, cascade = { CascadeType.ALL }, optional = true )
@Audited( targetAuditMode = RelationTargetAuditMode.NOT_AUDITED )
@JoinColumn( name = "CONTACT_CATEGORY_ID_FK" )
private ContactCategory contactCategory;
}
{code}
{code:java}
@Entity
@Audited
@Table( name = "PERSON2RELATIVE" )
public class PersonRelationImpl implements PersonRelation {
@Id
@GeneratedValue( strategy = GenerationType.SEQUENCE, generator = "PERSON2RELATIVE_SEQ" )
@SequenceGenerator( name = "PERSON2RELATIVE_SEQ", sequenceName = "PERSON2RELATIVE_SEQ" )
@Column( name = "PERSON2RELATIVE_ID" )
private Long personRelationId;
@ManyToOne( targetEntity = PersonImpl.class, fetch = FetchType.LAZY, cascade = { CascadeType.REFRESH } )
@JoinColumn( name = "PERSON_ID_FK" )
private Person person;
@ManyToOne( targetEntity = RelativeImpl.class, fetch = FetchType.LAZY, cascade = { CascadeType.REFRESH } )
@JoinColumn( name = "PERSON_RELATIVE_ID_FK" )
private Relative relative;
@OneToOne( targetEntity = NoteImpl.class, fetch = FetchType.EAGER, optional = true, cascade = CascadeType.ALL )
@JoinColumn( name = "NOTE_ID_FK" )
private Note note; // audited
}
{code}