[jboss-user] [JBoss Seam] - Re: Question on Stateless Session Bean

[hasc]

after a while i got this working.

@Stateless
  | @Name("building")
  | public class BuildingListAction implements BuildingList,Serializable{
  | 	
  | 	private static final long serialVersionUID = 1L;
  | 	
  | 	private List<BuildingType> objects;
  | 	Map<String,BuildingType> buildingsMap;
  | 	
  | 	@PersistenceContext 
  |     EntityManager em;
  | 	
  | 	public Map<String,BuildingType> getBuildings()
  | 	{
  | 		objects = em.createQuery("select b from BuildingType b")
  |         .setHint("org.hibernate.cacheable", true)
  |         .getResultList();
  | 
  | 	  Map<String,BuildingType> results = new TreeMap<String,BuildingType>();
  | 	  
  | 	  for (BuildingType buildingtype: objects)
  | 	  {
  | 	  	results.put(buildingtype.getName(),buildingtype);
  | 	  }
  | 	  
  | 	  buildingsMap = results;
  | 		
  | 		return buildingsMap;
  | 	}
  | 
  |     public Converter getConverter()
  |     {
  |         return new BuildingTypeConverter(objects);
  |     }
  | }


im not familiar with ejb but this obviously leads to a query every time the method getBuildings() is called. My goal is to load the objects only once and then return a list every time the methos is called. Can somone help me with that or point me to an example or tutorial which describes that?

regards,
hasc


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