Conditional display of h:column

Question

I am trying to get a command link in a column of a data table to display conditionally on a row by row basis. I am using the JSF RI Beta.
item is the data table var.
<h:output_text value="#{item.parent}" /> will display true or false.
<c:if test="#{item.parent}"> does not appear to work. It behaves always false. Should I use a different syntax to reference this value in JSTL?
<h:column rendered="false"> has no effect.
<h:column rendered="#{item.parent}"> results in a null pointer error.
Ideas?
Thank you,
Ed

Answer 1

Try:
  <h:data_table value="#{SOME_LIST}"
                binding="#{helperBean.uidata}"
                var="item">
    <h:column>
      <h:SOME_COMPONENT rendered="#{helperBean.theCondition}"/>
    </h:column>
  </h:data_table>
  public class HelperBean {  // typically the bean which contains the data list
    public boolean theCondition() {
        int i = uidata.getRowIndex();
        if (i == -1) return true; // return value does not matter for index -1
        Item item = get_ith_item_of_your_sequence(i);
        return item.theCondition();
    private UIData uidata;
    public UIData getUidata() { return uidata; }
    public void setUidata(UIData uidata) { this.uidata = uidata; }
  }Wolfgang Oellinger