RF4 ExtendedDataTable AJAX (clientRows) issues

[galvarez]

Hi there,

    For some time I've been struggling with the ajax updates of the ExtendedDataTable from an Hibernate database. I had some success, but I also had some problems. I'll show you my code first (please, note that for the bean I'm using Lombok, that works like charm, btw):

Bean:

{code}
@ManagedBean
@SessionScoped
@Entity
@Table(name = "FARO_BRAND")
public class Brand implements Serializable
{
    /**
           * 
           */
    private static final long serialVersionUID = -8061201979519160070L;
    @Getter
    @Setter
    @Column(name="NAME", nullable=false, length=20)
    private String name;
    @Getter
    @Id
    @Column(name="ID", nullable=false)
    private int id;
    public Brand()
    {
              this.id=0;
              this.name="";
    }
}{code}

DAO:

{code}
@ManagedBean(name="brandSequenceDataModel")
public class BrandSequenceDataModel extends SequenceDataModel<Brand> {
          public BrandSequenceDataModel()
          {
                    super(new ListDataModel<Brand>());
          }
          @PostConstruct
          public void initialize()
          {
                    Session session = HibernateUtil.getSessionFactory().openSession();
                    Criteria criteria = session.createCriteria(Brand.class);
                    this.setWrappedData(criteria.list());
          }
}
{code}

Web:

{code:xml}
<rich:extendedDataTable style="height:300px; width:320px;"
  value="#{brandSequenceDataModel}" var="item"
  rowClasses="even-list-row,odd-list-row" clientRows="20">
    <rich:column>
      <f:facet name="header">
         <h:outputText value="ID" />
      </f:facet>
      <h:outputText value="#{item.id}" />
    </rich:column>
    <rich:column>
      <f:facet name="header">
         <h:outputText value="NAME" />
      </f:facet>
      <h:outputText value="#{item.name}" />
    </rich:column>
</rich:extendedDataTable>
{code}

    Ok, so, these are my problems:

• Whenever the visitor loads from the database new rows, they are shown always with the even-list-row class. No matter what I do. First update it works, later on, it fails.
• It only matters the number in clientRows for the first update from the database, afterwards it gets only just as many as *needed* to show on table and *some* more. I mean, if I set the clientRows argument to 50, I expect that every time the visitor goes to the DataModel it gets another 50, but it is not the case.
• No matter what I do, the update is horribly slow. I guess there is no way to change this, though.
• Tag API Documentation doesn't show the clientRows parameter. I know, this is not exactly a problem, but I just wanted to point it out

   I am using RF 4.0.0 Final version. Anyhow, if you happend to find any other problem in my code (as I am sure you will) I will be very happy to read about it.

Thanks a lot to all.

PS: It would be great to be able to preview this post before sending it