[jboss-user] [JBoss Seam] - Custom JSF Converter???

[nebukadnezzar]

Hi!

I'm trying to write a custom converter for passing my objects as GET-parameter...
But I still can't get them to work!

has anybody an example of doing this???

here's my code:

  | @Name("categoryConverter")
  | @Stateless
  | public class CategoryConverterBean implements javax.faces.convert.Converter, CategoryConverter  {
  | 
  | 	@PersistenceContext
  | 	private EntityManager entityManager;
  | 	
  | 	public Object getAsObject(FacesContext arg0, UIComponent arg1, String str) 
  | 		throws ConverterException {
  | 		try {
  | 			long id = Long.parseLong(str);
  | 			
  | 			return entityManager.createQuery("Select c from Category where c.id = :id")
  | 					.setParameter("id", id)
  | 					.getSingleResult();
  | 			
  | 		} catch (Exception e) {
  | 			throw new ConverterException();
  | 		}
  | 		
  | 	}
  | 
  | 	public String getAsString(FacesContext arg0, UIComponent arg1, Object obj) 
  | 		throws ConverterException {
  | 		if (obj instanceof Category) {
  | 			return Long.toString(((Category)obj).getId());
  | 		} else
  | 			throw new ConverterException();
  | 	}
  | 	
  | 	
  | }
  | 

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