Hello,
I'd like to know if it's possible to have a 1-N relation in the same Entity. The goal is it create a tree : ElementBean-1-----N-ElementBean
I tried the followin is my ElementBean :


/**
* @ejb:interface-method view-type="local"
*
* @ejb.relation
* name="parent-element"
* role-name="element-has-a-parent"
*
* @jboss.relation-mapping style="foreign-key"
*
* @jboss.relation
* fk-constraint="true"
* fk-column="parent_fk"
* related-pk-field="id"
**/
public abstract ElementLocal getParent();
/**
* @ejb:interface-method view-type="local"
*/
public abstract void setParent(ElementLocal parentId);


/**
* @ejb.interface-method view-type="local"
*
* @ejb.relation
* name="parent-element"
* role-name="parent-has-children"
*
* @jboss.relation-mapping style="foreign-key"
*
*/
public abstract java.util.Collection getChildren();
/**
* @ejb:interface-method view-type="local"
*/
public abstract void setChildren(java.util.Collection children);


But i get the error :

[ServiceController] Problem starting service jboss.j2ee:jndiName=oedl/User,service=EJB
org.jboss.deployment.DeploymentException: CMP field for key not found: field name=id
at org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCRelationshipRoleMetaData.loadKeyFields(JDBCRelationshipRoleMetaData.java:374)
....
[ServiceController] Problem starting service jboss.j2ee:jndiName=oedl/Element,service=EJB
org.jboss.deployment.DeploymentException: CMP field for key not found: field name=id
....

(this message appears with all my EJB names)

Thanks.