Af:table with tags JSTL.

Question

Hi guys,
I'm tried to use JSTL (c:if) inside component ADF Rich Client (af:table) and it shown me a error message.
Is possible using JSTL with ADF? If is possible, you have a sample? Or a idea for solution this case?
The code that I'm creating is:
<?xml version='1.0' encoding='UTF-8'?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.1"
          xmlns:f="http://java.sun.com/jsf/core"
          xmlns:h="http://java.sun.com/jsf/html"
          xmlns:c="http://java.sun.com/jsp/jstl/core"
          xmlns:fn="http://java.sun.com/jsp/jstl/functions"
          xmlns:af="http://xmlns.oracle.com/adf/faces/rich">
  <jsp:directive.page contentType="text/html;charset=UTF-8"/>
  <f:view>
    <af:document id="d1">
      <af:form id="f1">
        <af:table value="#{valueTable.paises}" var="row" rowBandingInterval="0"
                  id="t2" varStatus="status">
          <c:if test="#{status.count == 1}">
            <af:forEach items="#{valueTable.paises}" var="cvalue" varStatus="teste">
              <af:column sortable="false" headerText="#{cvalue}" align="start" id="c7">
                <af:outputText value="#{cvalue}#{fn:length(valueTable.paises)}" id="ot6"/>
              </af:column>
            </af:forEach>
          </c:if>
          <c:if test="#{status.count > 1}">
            <af:forEach items="#{valueTable.paises2}" var="cvalue2" varStatus="teste2">
              <af:column sortable="false" headerText="#{cvalue2}" align="start" id="c7">
                <af:outputText value="#{cvalue2}#{fn:length(valueTable.paises2)}" id="ot6"/>
              </af:column>
            </af:forEach>
          </c:if> 
        </af:table>
      </af:form>
    </af:document>
  </f:view> Another information:
I tried using af:switcher but af:switcher only can to be use inside in af:treeTable it can't to be use inside in af:table.

Answer 1

Hi,
the problem with this is that JSTL is parsed at compile time whereas JSF statements are evaluated at runtime. So while you can use JSTL, you can't for the use case you list here.
What about this (forget about your JSTL)
<af:forEach items="#{valueTable.paises}" var="cvalue" varStatus="teste">
  <af:switcher defaultFacet="equal" facetName="#{status.count > 1? 'larger' : 'equals'}">
       <f:facet name="larger">
             <af:column sortable="false" headerText="#{cvalue2}" align="start" id="c7">
                <af:outputText value="#{cvalue2}#{fn:length(valueTable.paises2)}" id="ot6"/>
              </af:column>
              </af:column>
       </f:facet>
       <f:facet name="equals">
               <af:column sortable="false" headerText="#{cvalue}" align="start" id="c7">
                <af:outputText value="#{cvalue}#{fn:length(valueTable.paises)}" id="ot6"/>
       </f:facet>
  </afSwitcher>
</af:forEach> Note that chances are that the table doesn't like the switcher as it expects a column. However, I didn't try it ;-)
The alternative would be to use
<af:forEach items="#{valueTable.paises}" var="cvalue" varStatus="teste">  
             <af:column sortable="false" headerText="#{status.count > 1?  cvalue2 : cvalue}" align="start" id="c7">
                <af:outputText value="#{cvalue2}#{fn:length(valueTable.paises2)}" id="ot6" rendered=#{status.count > 1}/>
                <af:outputText value="#{cvalue}#{fn:length(valueTable.paises)}" id="ot7" rendered=#{!status.count > 1}/>
            </af:column>
</af:forEach> Frank
Edited by: Frank Nimphius on May 14, 2010 5:13 PM
Edited by: Frank Nimphius on May 14, 2010 5:14 PM