4 Replies Latest reply on Mar 17, 2009 11:52 PM by alibsd

    Strange problem with subTable and AJAX refreshes

    alibsd
    alibsd Mar 16, 2009 5:14 AM

      Hi

      I'm working on creating some kind of grouping by use of rich:subTable.
      The sample code is:
      xhtml file:

      <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
 xmlns:h="http://java.sun.com/jsf/html"
 xmlns:f="http://java.sun.com/jsf/core"
 xmlns:ui="http://java.sun.com/jsf/facelets"
 xmlns:rich="http://richfaces.org/rich"
 xmlns:a4j="http://richfaces.org/a4j">
<body>
<f:view>
 <h:form>
 <rich:dataTable id="lettersGrid" value="#{lettersBean.lettersGroup}"
 var="letterGroup">
 <f:facet name="header">
 <rich:columnGroup>
 <rich:column>
 <h:outputText value="subject" />
 </rich:column>
 <rich:column>
 <h:outputText value="sender" />
 </rich:column>
 <rich:column>
 <h:outputText value="receiver" />
 </rich:column>
 <rich:column>
 <h:outputText value="type" />
 </rich:column>
 </rich:columnGroup>
 </f:facet>

 <rich:column colspan="4">
 <h:commandButton action="#{letterGroup.toggleShow}"
 value="#{letterGroup.name}" />
 </rich:column>


 <rich:subTable id="subTable" value="#{letterGroup.letters}"
 var="letter">
 <rich:column>
 <h:outputText value="#{letter.subject}" />
 </rich:column>
 <rich:column>
 <h:outputText value="#{letter.sender}" />
 </rich:column>
 <rich:column>
 <h:outputText value="#{letter.receiver}" />
 </rich:column>
 <rich:column>
 <h:outputText value="#{letter.type}" />
 </rich:column>
 </rich:subTable>

 </rich:dataTable>
 </h:form>
</f:view>
</body>
</html>


      and the managed beans are: 
      package com.salimi;

import java.util.ArrayList;
import java.util.List;

public class LettersBean {
 private String groupCol = "type";
 private List<LetterGroup> letterGroups;

 public LettersBean() {
 letterGroups = new ArrayList<LetterGroup>(3);
 for (int i = 0; i < 3; i++) {
 String typeName = "type " + i;
 List<Letter> groupLetters = new ArrayList<Letter>();
 LetterGroup grp = new LetterGroup((i % 2 == 0), typeName, groupLetters);
 letterGroups.add(grp);
 for (int j = 0; j < 10; j++) {
 groupLetters.add(new Letter("subject " + i + "_" + j, typeName,
 "sender " + i + "_" + j, "receiver " + i + "_" + j));
 }
 }
 }

 public List<LetterGroup> getLettersGroup() {
 return letterGroups;
 }

 public void setLettersGroup(List<LetterGroup> group) {

 }

 public String getGroupCol() {
 return groupCol;
 }

 public void setGroupCol(String groupCol) {
 this.groupCol = groupCol;
 }

}



      package com.salimi;

import java.util.ArrayList;
import java.util.List;

public class LetterGroup {
 private String name;
 private List<Letter> letters;
 private boolean mustShow;

 public LetterGroup(boolean mustShow, String name, List<Letter> letters) {
 super();
 this.name = name;
 this.letters = letters;
 this.mustShow = mustShow;
 }

 public String getName() {
 return name;
 }

 public void setName(String name) {
 this.name = name;
 }

 public List<Letter> getLetters() {
 if (mustShow) {
 System.err.println(name + " returning list with size = " + letters.size());
 return letters;
 } else {
 System.err.println(name + " returning EMPTY list");
 return new ArrayList<Letter>();
 }
 }

 public void setLetters(List<Letter> letters) {
 this.letters = letters;
 }

 public boolean isMustShow() {
 System.err.println(name + " must " + (mustShow ? "" : "not") + " be shown");
 return mustShow;
 }

 public void setMustShow(boolean mustShow) {
 this.mustShow = mustShow;
 }

 public void toggleShow() {
 mustShow = !mustShow;
 }
}


      Managed beans are Session Scoped. Everything is fine when h:commandButton
      is used. But when it is replaced by a4j:commandButton, the data of subTable is
      not shown. I can't understand the reason for this strange behavior. Any ideas why
      AJAX updates do not work, while normal postbacks work correctly.

      BTW, first I wanted to use rendered attribute of the subTable, but since it was
      not work either, I had to handle show/hide subtable in LetterGroup.getLetters() method.

      Regards

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