datatable list of lists

[barbaraboie]

Hello

I have a problem with creating a rich:dataTable from a list of lists (a list containing 3 other lists that each contain 5 objects Waarde)

@DataModel
private List<List<Waarde>> lijstWaarden;

@Factory("lijstWaarden")
    public void findLijstWaarden(){
    lijstWaarden = loadWaardenList();
}

I did something like this

<rich:dataTable value="#{lijstWaarden}" var="_list">

     <rich:subTable value="#{_list}" var="_waarde">
          <rich:column>
               <h:outputText value="#{_waarde.tekst}" />
          </rich:column>
     </rich:subTable>

</rich:dataTable>

I get all the values in a table, but the problem is that I only get one column! So I have a table with 1 column and 15 rows instead of a table of 3 rows and 5 columns. Is there anyone who has an idea how I can get the right table?

Thanks!

barbara

[barbaraboie]

I also tried:

<rich:dataTable value="#{lijstWaarden}" var="_list">

     <a4j:repeat value="#{_list}" var="_waarde">

          <rich:column>

               <h:outputText value="#{_waarde.tekst}" />

          </rich:column>

     </a4j:repeat>

</rich:dataTable>   

but then I don't get any result

[lmk]

an example for subTable is available on Richfaces demo site, you can also use nested dataTable, ui:repeat or c:foreach.

[ilya_shaikovsky]

should be

<rich:dataTable value="#{lijstWaarden}" var="_list">

     <c:forEach value="#{_list}" var="_waarde">
          <rich:column>
               <h:outputText value="#{_waarde.tekst}" />
          </rich:column>
     </c:forEach>

</rich:dataTable>   

first code snippet output works just as expected. and the usage of repeat to create columns dynamically answered already at this forum and other ones.. e.g. - http://www.ilikespam.com/blog/c:foreach-vs-ui:repeat-in-facelets

[barbaraboie]

      <rich:dataTable value="#{lijstWaarden}" var="_list">
                       
          <c:forEach items="#{_list}" var="_waarde">
               <rich:column>
                    <h:outputText value="test2 #{_waarde.tekst}" />
               </rich:column>
          </c:forEach>
                
     </rich:dataTable>

Thanks for your answer, Ilya.

I tried c:foreach with items instead of value because that gave an error, so I have something like this:

but I got an empty table. So I tried this:

     <rich:dataTable value="#{lijstWaarden}" var="_list">
          <rich:column>
               <h:outputText value="test1" />
          </rich:column>
                          
          <c:forEach items="#{_list}" var="_waarde">
               <rich:column>
                    <h:outputText value="test2 #{_waarde.tekst}" />
               </rich:column>
          </c:forEach>
                
     </rich:dataTable>

and the result was this:

test1

test1

test1

so the items in _list are not shown...

[ilya_shaikovsky]

check please generated HTML  - if there are c:forEach tags ? maybe you just used wrong namespace?

[barbaraboie]

<rich:dataTable value="#{lijstWaarden}" var="_list">

     <rich:column>

          <h:outputText value="size #{_list.size}" />

      </rich:column>

      <c:forEach items="#{_list}" var="_waarde">

           <rich:column>

                <h:outputText value="test2 #{_waarde.tekst}" />

           </rich:column>

      </c:forEach>

</rich:dataTable>

As you can see in the html-code, the size of _list is 5 for each of the 3 lists, but there is no sign of the for-each loop...

<table id="j_id2:j_id5" border="0" cellpadding="0" cellspacing="0">
         <colgroup span="1"></colgroup>
         <tbody id="j_id2:j_id5:tb">
         <tr>
          <td id="j_id2:j_id5:0:j_id6">size 5</td>
         </tr>
         <tr>
          <td id="j_id2:j_id5:1:j_id6">size 5</td>
         </tr>
         <tr>
          <td id="j_id2:j_id5:2:j_id6">size 5</td>
         </tr>
         </tbody>
</table>

[nbelaevski]

Hi Barbara,

This code:

<rich:dataTable value="#{lijstWaarden}" var="_list">
     <rich:column>
          <h:outputText value="size #{_list.size}" />
      </rich:column>



      <c:forEach items="#{_list}" var="_waarde">
           <rich:column>
                <h:outputText value="test2 #{_waarde.tekst}" />
           </rich:column>
      </c:forEach>


</rich:dataTable>

is not correct. Variable of iteration component like rich:dataTable cannot be used as value for c:forEach.

[ilya_shaikovsky]

Thanks Nick for pointing to my fault.

Barbara, sorry please.. yes, c:forEach is the only way define creation of components dynamically declarativelly from the page. But it will not works properly in your case as its creates the components while building/restoring view  and dataTable var - available only at render responce during table encoding.

The same limitation exist for columns component - them should not use Var variable of the table according to the same problem.(see the demo - it uses it's own list for columns creation)