3 Replies Latest reply on Jan 27, 2014 11:57 PM by bleathem

    Request Scoped Producer and ajax partial rendering does not work as expected

    ruenagel_frank
    ruenagel_frank Dec 7, 2013 10:19 AM

      An ajax commandlink or commandbutton calls a bean method to add an entry to a list, which is shown in the html. Then it renderes the list's id.  The list is produced by a @requestScoped producer method.

       

      If commandlink and list both are in the same form, the producer is called before the adder: the list on screen is not updated with the just added value.

       

      If (1) the commandlink is in a different form or

         (2) the commandlink is decorated with execute="@this", then it works as expected: the adder-method is called before the producer is called.

       

      This behaviour is at least inconsistent and unexpected.

       

      Tested with

       

      Tomcat 7, org.jboss.weld.servlet 2.0.4/2.1, Richfaces 4.3.4

      JBoss AS 7.1.1.Final with Richfaces 4.2.3

       

      Is this a bug or have I missed something?

       

      Here is the  xhtml, remove execute="@this" to reproduce  it:

       

      <h:form id="myform0">
  <a4j:commandButton execute="@this" render="tableidx"
  action="#{test.addToListOfStrings2('p')}" value=" Add a Line" />


  <br />
  <br />
  <a4j:commandLink  execute="@this"  render="tableidx"
  action="#{test.addToListOfStrings2('l')}">
                        Add a Line
                            </a4j:commandLink>
  <br />
  <br />


  <h:panelGroup id="tableidx">
  <rich:dataTable var="_item"
  value="#{MYLISTOFSTRINGSX}" id="tableidxinner">
  <rich:column>
  <h:outputText value="#{_item}"></h:outputText>
  </rich:column>


  </rich:dataTable>
  </h:panelGroup>


  </h:form>

       

       

      Java:

      import java.io.Serializable;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;


import javax.enterprise.context.Dependent;
import javax.enterprise.context.RequestScoped;
import javax.enterprise.context.SessionScoped;
import javax.enterprise.inject.Produces;
import javax.inject.Named;


import org.apache.log4j.Logger;




@Named
@SessionScoped
public class Test implements Serializable {


  private static final long serialVersionUID = 1L;


  private static final Logger log = Logger.getLogger(Test.class);
  private List<String> listOFStrings = new ArrayList<>();


  @Produces
  @Named("MYLISTOFSTRINGSX")
  @RequestScoped
  public List<String> fetchMyListOfStrings()
  {
  log.info("Fetch!");

  return new ArrayList<>(listOFStrings); // return new object to simulate database fetches
  }



  public void addToListOfStrings2(String v)
  {
  log.debug("Add TO List of Strings");
  listOFStrings.add(new Date().getTime() +"" +v);
  }

}