Managed bean returns null on SetActionListener

Question

Hi,
I'm trying to implement a filter for my table (something similar to what's done in the "OracleAS 10g R3: Oracle ADF for Forms/4GL Developers/Volume II" student guide, practice 9-5). The idea is to have a request-scoped managed bean which holds the filter value - the value is set using a SetActionListener, and later bound to a bind variable in a view with a view criteria. I have problem re-creating this in Trinidad (JDev 11 TP3, to be exact).
I have created a request-scoped bean in adfc-config.xml (called 'ecnStatusBean'), with a managed property (named 'Status'). I am referencing it from my SetActionListener: setting #{'E'} to #{requestScope.ecnStatusBean.Status}. The reference compiles fine in the Expression Builder (it didn't before I created the managed bean), but when running and clicking the CommandLink with the SetActionListener, I get a runtime error:
oracle.security.jazn.JAZNRuntimeException: Target Unreachable, 'ecnStatusBean' returned null
     at oracle.security.jazn.oc4j.JAZNFilter.doFilter(JAZNFilter.java:480)
To make things more interesting, I tried changing the scope to session, and got a different error:
oracle.adf.controller.ControllerException: ADFC-10001: Cannot instantiate class 'pelephone.cdma_ecn.ecn_manager.model.ecnStatusMB'.
     at oracle.adfinternal.controller.util.Utils.createAndLogFacesException(Utils.java:169)
Am I doing a rookie's mistake? Is this a Trinidad issue? Something else?
Thanks in advance for any help,
Boris

Answer 1

Are you sure about the reference you use here: #{requestScope.ecnStatusBean.Status}.
Here is a simple sample of what works for me:
The first page has this:
      <af:form binding="#{backing_start.form1}" id="form1">
        <af:inputText label="Label 1" binding="#{backing_start.inputText1}"
                      id="inputText1"/>
        <af:commandButton text="commandButton 1"
                          binding="#{backing_start.commandButton1}"
                          id="commandButton1" action="go">
          <af:setActionListener from="#{backing_start.inputText1.value}"
                                to="#{backing_start.paramToPass}"/>
        </af:commandButton>
      </af:form>It references a bean that has this:
    private RichInputText inputText1;
    public void setInputText1(RichInputText inputText1) {
        this.inputText1 = inputText1;
    public RichInputText getInputText1() {
        return inputText1;
    public String paramToPass;
    public void setParamToPass(String paramToPass) {
        this.paramToPass = paramToPass;
    public String getParamToPass() {
        return paramToPass;
    }And then I can see it in the next page that I navigated to like this:
        <af:outputText value="the current value is #{backing_start.paramToPass}"/>In the adf-config.xml I have this:
<adfc-config xmlns="http://xmlns.oracle.com/adf/controller" version="1.2">
  <view id="start">
    <page>/start.jspx</page>
  </view>
  <view id="end">
    <page>/end.jspx</page>
  </view>
  <control-flow-rule>
    <from-activity-id>start</from-activity-id>
    <control-flow-case>
      <from-outcome>go</from-outcome>
      <to-activity-id>end</to-activity-id>
    </control-flow-case>
  </control-flow-rule>
  <managed-bean>
    <managed-bean-name>backing_start</managed-bean-name>
    <managed-bean-class>backing.backing_start</managed-bean-class>
    <managed-bean-scope>request</managed-bean-scope>
  </managed-bean>
</adfc-config>