CallEvent event;
            event =  new  CallEvent();

            event.setOperator(op);
            event.setClient(cl);
            event.setEvent_date( new  Date());
            event.setCall_archive_id( Long .parseLong(params.getCall_id()));
            event.setStatus(  new   Long (  0  ) );
                    
            AbonentManager am = (AbonentManager)getBean( Constants.CC_ABONENT_MANAGER_BEAN );
            Abonent abon= am.findAbonentByPhoneNumber( request.getParameter(CallCenterModulesConstants.HOTLINE_PARAM_PHONE) );
            
             if  (  null  ==  abon ) {
                abon=  new  Abonent();
                abon.setAbonent_id(  new   Long (  Long .parseLong( params.getAbon_id() ) ) );
                abon.setPhone( hotline.getAbonentPhone() );
                am.createAbonent( abon );
                
                event.setAbonent( abon );
            }
            

            abon.setAbonentFirstName( beanForm.getAbonentFirstName() );
            abon.setAbonentSecondName( beanForm.getAbonentSecondName() );
            abon.setAbonentSurName( beanForm.getAbonentSurName() );
            abon.setPhone( beanForm.getAbonentPhone() );
            


            am.updateAbonent( abon );                        
             Long  eventId= null ;
            eventId = cemg.createCallEvent(event); // <==== Вот тут возникает исключение

/**
 * Сохраняет entity в базу, 
 * Возвращает id добавленной записи 
 */    
 public   Long  createCallEvent (CallEvent a)
    {
        getHibernateTemplate ().save (a);
        Session session = getHibernateTemplate ().getSessionFactory ().getCurrentSession ();
        
         return  ( Long )session.getIdentifier (a);
    }

org.springframework.dao.InvalidDataAccessApiUsageException: The given object has a null identifier: com.blandware.atleap.model.ccenter.CallEvent; nested exception is org.hibernate.TransientObjectException:
The given object has a null identifier: com.blandware.atleap.model.ccenter.CallEvent

/**
 * @struts.form include-all="false" extends="com.blandware.atleap.webapp.form.BaseForm"
 * @hibernate.class table="`CALL_EVENT`" lazy="false" dynamic-update="true" dynamic-insert="true"
 * @hibernate.cache usage="read-write"
 */
 public   class  CallEvent  extends  BaseObject 
{
    /**
     * Returns the id of the question.
     *
     * @return id
     * @struts.form-field
     * @hibernate.id column="`id`"
     * generator-class="increment" unsaved-value="null"
     */
     public   Long  getId() {
         return  id;
    }
.....// поля, setter, getters с xdoclet-аннотациями 
}