#acl YoonKyungKoo:read,write All:read
== FAQ ==

1. ERROR MESSAGE : Could not perform validation checks for component as the class was not found
 Turns out that if you are going to use a component as a composite key, the component must
 1. Override equals
 1. Override hashCode
 1. Implement java.io.Serializable

1. ERROR MESSAGE : ORA-00904: "ROLEELEMEN0_"."ID": invalid identifier
 The HQL was '''delete from RoleElement where role.id = :roleId'''
 1. Bulk UPDATE/DELETE cannot include alias
  * NOTE this issue has been fixed in Hibernate 3.1.x
 1. Bulk UPDATE/DELETE cannot include join either explicit or implicit.
  * above HQL use implicit join in '''role.id'''
  * you can use sub-queries in the where-clause.