[jboss-user] [EJB 3.0 Users] - Re: EJB 3.0 lookup from Pojo and Injection

[MirekSz]

I try explain exacly what I doing, the prevoius example wasn't real(but describe problem)

I have fasade

  | @Stateful
  | public class FasadeBean implements Fasade{
  | 
  | @EJB
  | private ChangedIdsCollectorService;
  | 
  | 
  | 
  | public ServerResponse execute(String serviceName, String serviceMethod, Object[] arguments){
  | 
  | 	Object result = serviceExecutor.execute(serviceName,serviceMethod, arguments);
  | 
  | 	return new ServerResponse(result, ChangedIdsCollectorService.getChangedIds());
  | 
  | 
  | }
  | 
  | 
  | }
  | 
and service which collect ids of changed object(ENTITY)

  | @stateles
  | public class ChangedIdsCollectorServiceBean inplements ChangedIdsCollectorService{
  | 
  | private List<Long> changedIds;
  | 
  | public void addChangedId(Long id){
  | changedIds.add(id);
  | }
  | 
  | public  List<Long>  getChangedIds(){
  | return changedIds;
  | }
  | 
  | }
  | 

When i call fasade and execute for example ("OperatorService","update" , operatorEntity) this fasade invokes "OperatorService" and return updated enitity, but I also have in my Entity 
metod which lookup for ChangedIdsCollectorService and add yourself to his list:

  | public class AbstractEntity {
  | 
  | @javax.persistence.PostUpdate
  | public void changeListener(){
  | 	Context context = new InitialContext();
  | 	ChangedIdsCollectorService ChangedIdsCollectorService =	ChangedIdsCollectorServicecontext.lookup("ChangedIdsCollectorService/local");
  | 	ChangedIdsCollectorService.addChangedId(this.id); 
  | 
  | 
  | }
  | }
  | 
In this way I get information about changed objects....update of operator can invokes some businness rule which can updates another object and I also will be have this Ids.

Now I don't now if in FasadeBean I will be have the same instance of ChangedIdsCollectorService (from injection) like in Entity(from lookup)




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