Collection not yet supported

[aidan_b5]

I'm trying to get three simple beans to map to each other and am getting the following exception (v4.03SP1 EJB RFC 5):

(InvocationTargetException).....

Caused by: org.hibernate.AnnotationException: com.sms.srs.entity.Attribute collection not yet supported: com.sms.srs.entity.AttributeNameattr
at org.hibernate.cfg.annotations.CollectionBinder.getCollectionBinder(CollectionBinder.java:197)
at org.hibernate.cfg.AnnotationBinder.processElementAnnotations(AnnotationBinder.java:1175)
at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:629)
at org.hibernate.cfg.AnnotationConfiguration.processArtifactsOfType(AnnotationConfiguration.java:276)


The classes involved are:

@Entity
@Table (name="ship")
public class Ship {

 public int getImo() {
 return imo;
 }

 public void setImo(int imo) {
 this.imo = imo;
 }

 @Id @GeneratedValue(strategy= GenerationType.AUTO)
 public int getId() {
 return id;
 }

 public void setId(int id) {
 this.id = id;
 }

 @CollectionOfElements
 public Collection<Attribute> getAttributes() {
 return attributes;
 }

 public void setAttributes(Collection<Attribute> attributes) {
 this.attributes = attributes;
 }

 private int imo;
 private int id;
 private Collection<Attribute> attributes;



}

@Entity
@Embeddable
@Table (name="attribute")
public class Attribute {

 @Id @GeneratedValue(strategy= GenerationType.AUTO)
 public int getId() {
 return id;
 }

 public void setId(int id) {
 this.id = id;
 }

 @ManyToOne
 @JoinColumn(name = "id")
 public AttributeName getNameid() {
 return nameid;
 }

 public void setNameid(AttributeName nameid) {
 this.nameid = nameid;
 }

 public String getValue() {
 return value;
 }

 public void setValue(String value) {
 this.value = value;
 }

 @ManyToOne
 @JoinColumn(name = "id")
 public Ship getShip() {
 return ship;
 }

 public void setShip(Ship ship) {
 this.ship = ship;
 }

 public long getStartdate() {
 return startdate;
 }

 public void setStartdate(long startdate) {
 this.startdate = startdate;
 }

 public long getEnddate() {
 return enddate;
 }

 public void setEnddate(long enddate) {
 this.enddate = enddate;
 }

 private Ship ship;
 private int id;
 private AttributeName nameid;
 private String value;
 private long startdate;
 private long enddate;

}

@Entity
@Table (name="attributename")
public class AttributeName {

 @Id @GeneratedValue(strategy= GenerationType.AUTO)
 public int getId() {
 return id;
 }

 public void setId(int id) {
 this.id = id;
 }

 //Name of the attribute
 public String getName() {
 return name;
 }

 public void setName(String name) {
 this.name = name;
 }

 @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER, mappedBy="order")
 public Attribute getAttr() {
 return attr;
 }

 public void setAttr(Attribute attr) {
 this.attr = attr;
 }

 private Attribute attr;
 private int id;
 private String name;

}

With my persistence.xml:

<persistence>
 <persistence-unit name="srsentity">
 <jta-data-source>java:/MySqlDS</jta-data-source>

 <properties>
 <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
 <property name="hibernate.hbm2ddl.auto" value="update"/>
 </properties>
 </persistence-unit>
</persistence>

According to the hibernate annotation documentation, if I use a collection of elements, I should use @CollectionOfElements instead of @OneToMany.... because the EJB spec does not support them...which I'm doing (a Ship has a collection of Attribute)

I'd really appreciate some help here.

Thanks.

[epbernard]

@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER, mappedBy="order")
public Attribute getAttr() {
return attr;
}


Attribute is not a collection this does not make sense to map is a a One to many

[aidan_b5]

Excellent, thanks