Auditing collection of components
Hi,
I'm trying to audit an entity which contains a collection of components. I know that auditing @ElementCollection wasn't supported in previous version of hibernate (https://hibernate.atlassian.net/browse/HHH-6613), therefore I'm using version 4.2.0.Final.
My classes are:
@Entity
@Audited
@Table(name = "TEST_OWNER")
public class Owner {
private Integer id;
private String name;
private Set<Owned> ownedSet;
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
@Column(name = "OWNER_ID")
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
@Column(name = "OWNER_NAME")
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@ElementCollection
@CollectionTable(name = "TEST_OWNER_PARAMS", joinColumns = @JoinColumn(name = "OWNER_ID"))
public Set<Owned> getOwnedSet() {
return ownedSet;
}
public void setOwnedSet(Set<Owned> ownedSet) {
this.ownedSet = ownedSet;
}
}
@Embeddable
public class Owned {
private String param;
private String val;
public Owned() {
}
public Owned(String param, String val) {
super();
this.param = param;
this.val = val;
}
@Column(name = "PAR")
public String getParam() {
return param;
}
public void setParam(String param) {
this.param = param;
}
@Column(name = "VAL")
public String getVal() {
return val;
}
public void setVal(String val) {
this.val = val;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((param == null) ? 0 : param.hashCode());
result = prime * result + ((val == null) ? 0 : val.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (!(obj instanceof Owned))
return false;
Owned other = (Owned) obj;
if (param == null) {
if (other.param != null)
return false;
}
else if (!param.equals(other.param))
return false;
if (val == null) {
if (other.val != null)
return false;
}
else if (!val.equals(other.val))
return false;
return true;
}
}
Primary key for TEST_OWNER_PARAMS_AUD table is (OWNER_ID, PAR, VAL, REV, REVTYPE).
Save/update/merge succeeds when I perform it on an Owner entity with "ownedSet" which contains a single element. However, save/update/merge fails when "ownedSet" contains more than one element (in case of merge - when more than one element in "ownedSet" was modified). The error I'm getting is:
org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: [TEST_OWNER_PARAMS_AUD#{REV=DefaultRevisionEntity(id = 2277, revisionDate = May 7, 2013 2:08:27 PM), Owner_id=2276, REVTYPE=ADD}]
Why does it happen? Am I missing something?
Thanks,
Julia
