I've just downloaded and installed JBoss EJB 3 preview 5. I've been using preview 4 and now I'm getting a not yet implemented exception for @IdClass. This was working in preview 4 and not in preiew 5. What am I doing wrong>

Nothing, JBoss EJB3 now use Hibernate Annoations and this is not currently implemented.
Mainly because I don't think the @IdClass semantic is fully suported by Hibernate core right now.

Hi, i´m facing the same problem, the hibernate annotations not support the @IdClass annotation.

I´m waiting for a tip to how to outline this situation.

If you have an embedded composite PK using a class PK,



use @EmbeddedId (have a look at the doc for more infos)

On the contrary, if your class has embedded id properties refering a ManPk (which is the purpose of @IdClass)


Then you can't map it yet, sorry :-(

All my project that uses hibernate 2.x use separate PK classes, and I now want to migrate to Hibernate 3 with annotations. Well, i see that i will need to wait for the final version. For your undestanding one of my my .hbm.xml is bellow, I think that the composite-id tag will be replaced by the @IdClass annotation right ?

Anyway, thanks for the attention.

<hibernate-mapping>
<class
name="br.com.venus.model.valueobjects.Menu_profileVO"
table="MENU_PROFILE"
dynamic-update="false"
dynamic-insert="false"
>

<composite-id
name="pk"
class="br.com.venus.model.valueobjects.Menu_profileKeyVO"
>
<key-property
name="id_menu"
type="integer"
column="id_menu"
/>

<key-property
name="id_permission"
type="integer"
column="id_permission"
/>

<key-property
name="id_profile"
type="integer"
column="id_profile"
/>

</composite-id>

<many-to-one
name="menu"
class="br.com.venus.model.valueobjects.MenuVO"
cascade="none"
outer-join="auto"
update="false"
insert="false"
access="property"
column="id_menu"
/>

<many-to-one
name="permission"
class="br.com.venus.model.valueobjects.PermissionVO"
cascade="none"
outer-join="auto"
update="false"
insert="false"
access="property"
column="id_permission"
/>

<property
name="permission_value"
type="string"
update="true"
insert="true"
access="property"
column="permission_value"
length="50"
not-null="false"
unique="false"
/>

<property
name="status"
type="integer"
update="true"
insert="true"
access="property"
column="status"
length="1"
not-null="false"
unique="false"
/>

<many-to-one
name="profile"
class="br.com.venus.model.valueobjects.ProfileVO"
cascade="none"
outer-join="auto"
update="false"
insert="false"
access="property"
column="id_profile"
/>

<!--
To add non XDoclet property mappings, create a file named
hibernate-properties-Menu_profileVO.xml
containing the additional properties and place it in your merge dir.
-->

</class>

</hibernate-mapping>

No this case works perfectly!
just use




The case that does not currently work is


Actually, the @IdClass is not even possible with H3 hbm mappings

I had tried this a time ago.
Tried now with beta 1 and putting @EmbeddedId and get the following exception:

Annotated class should have an @Entity annotation: br.com.venus.model.valueobjects.Menu_profileKeyVO

Put the @Entity on the Menu_profileKeyVO class (@Entity (access = AccessType.PROPERTY)) and received the following exception :

13:12:50,652 ERROR [ContextLoader] Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'ludSessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Initialization of bean failed; nested exception is java.lang.NullPointerException: null
java.lang.NullPointerException
at org.hibernate.mapping.PersistentClass.createPrimaryKey(PersistentClass.java:266)

I think that i may not understanding something, bellow i put my spring config peace of code relative to the session factory and my 2 classes :

Spring configuration :

<!-- DataSource Definition -->
<bean id="ludDataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName">
<value>java:comp/env/jdbc/Venus</value>
</property>
</bean>

<!-- Hibernate SessionFactory Definition -->
<bean id="ludSessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="configLocation">
<value>WEB-INF/hibernate_configuration.xml</value>
</property>
<property name="configurationClass">
<value>org.hibernate.cfg.AnnotationConfiguration</value>
</property>
<property name="dataSource">
<ref bean="ludDataSource"/>
</property>
</bean>


hibernate_configuration.xml :

<hibernate-configuration>


<session-factory>
<!-- properties -->
<property name="dialect">org.hibernate.dialect.FirebirdDialect</property>
<property name="show_sql">false</property>

<mapping package="br.com.venus.model.valueobjects"/>
<mapping class="br.com.venus.model.valueobjects.MenuVO"/>
<mapping class="br.com.venus.model.valueobjects.ProfileVO"/>
<mapping class="br.com.venus.model.valueobjects.Menu_profileVO"/>
<mapping class="br.com.venus.model.valueobjects.Menu_profileKeyVO"/>

</session-factory>

</hibernate-configuration>


MenuProfileVO :

@Entity (access = AccessType.PROPERTY)
@Table (name = "MENU_PROFILE")
public class Menu_profileVO implements Serializable {

private Menu_profileKeyVO pk;
private String permission_value;
private MenuVO menu;
private ProfileVO profile;
private PermissionVO permission;
private Integer status;

public Menu_profileVO() {
super();
}

@ManyToOne ( targetEntity = "br.com.venus.model.valueobjects.MenuVO" )
@JoinColumn ( name = "id_menu", insertable = false, updatable = false)
public MenuVO getMenu() {
return menu;
}

@ManyToOne ( targetEntity = "br.com.venus.model.valueobjects.PermissionVO" )
@JoinColumn ( name = "id_permission", insertable = false, updatable = false)
public PermissionVO getPermission() {
return permission;
}

@Column (name = "permission_value", nullable = true, length=50, unique = false)
public String getPermission_value() {
return permission_value;
}

@Column (name = "status", nullable = true, unique = false)
public Integer getStatus() {
return status;
}

@EmbeddedId
public Menu_profileKeyVO getPk() {
return pk;
}

@ManyToOne ( targetEntity = "br.com.venus.model.valueobjects.ProfileVO" )
@JoinColumn ( name = "id_profile", insertable = false, updatable = false)
public ProfileVO getProfile() {
return profile;
}

.....


Menu_profileKeyVO :

@Entity (access = AccessType.PROPERTY)
public class Menu_profileKeyVO implements Serializable {

private Integer id_menu;
private Integer id_profile;
private Integer id_permission;

public Menu_profileKeyVO() {
super();
}

@Column (name = "id_menu", nullable = true, unique = false)
public Integer getId_menu() {
return id_menu;
}

@Column (name = "id_permission", nullable = true, unique = false)
public Integer getId_permission() {
return id_permission;
}

@Column (name = "id_profile", nullable = true, unique = false)
public Integer getId_profile() {
return id_profile;
}

...

}

Remove


A PK class is not an entity

Yes, it worked!!!

Certainly that i had missed something, now i can continue with my migration path.

Only one doubt, when i make this configuration with Hibernate2 I needed to put the PK mapping and worked, this was really necessary???

Thanks for the fast response and attention.

And congratulations for the great job at Hibernate!!!

No you sould not put it even in H2