TP4 / AF:REGION / What is the way to work with af:region and Backing Beans?

Question

Hello,
I would be able to use the "af:region" component with a Backing Bean, but all examples I can found googling are with pageDef.
So, I have been trying with different classes the way to solve this problem and I arrive to this:
oracle.adf.controller.internal.binding.TaskFlowRegionModel
Some code:
task-flow-definition.xml
<?xml version="1.0" encoding="windows-1252" ?>
<adfc-config xmlns="http://xmlns.oracle.com/adf/controller" version="1.2">
  <task-flow-definition id="taskDestinationA">
    <default-activity>destinationA</default-activity>
    <view id="destinationA">
      <page>/regionDestinationA.jsff</page>
    </view>
    <use-page-fragments/>
  </task-flow-definition>
</adfc-config>
adfc-config.xml
<?xml version="1.0" encoding="windows-1252" ?>
<adfc-config xmlns="http://xmlns.oracle.com/adf/controller" version="1.2">
  <managed-bean>
    <managed-bean-name>backing_regionTest</managed-bean-name>
    <managed-bean-class>backing.RegionTest</managed-bean-class>
    <managed-bean-scope>request</managed-bean-scope>
    <!--oracle-jdev-comment:managed-bean-jsp-link:1regionTest.jspx-->
  </managed-bean>
</adfc-config>
regionTest.jspx
<?xml version='1.0' encoding='windows-1252'?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.0"
          xmlns:f="http://java.sun.com/jsf/core"
          xmlns:af="http://xmlns.oracle.com/adf/faces/rich">
<jsp:directive.page contentType="text/html;charset=windows-1252"/>
<f:view>
<af:document binding="#{backing_regionTest.document1}" id="document1">
<af:form binding="#{backing_regionTest.form1}" id="form1">
    <af:region binding="#{backing_regionTest.region1}" id="region1"
               value="#{backing_regionTest.regionModel}"/>
</af:form>
</af:document>
</f:view>
<!--oracle-jdev-comment:auto-binding-backing-bean-name:backing_regionTest-->
</jsp:root>
RegionTest.java
import oracle.adf.controller.internal.binding.DCTaskFlowBinding;
import oracle.adf.controller.internal.binding.TaskFlowRegionModel;
import oracle.adf.view.rich.component.rich.RichDocument;
import oracle.adf.view.rich.component.rich.RichForm;
import oracle.adf.view.rich.component.rich.fragment.RichRegion;
import oracle.adf.view.rich.model.RegionModel;
public class RegionTest {
    private RichForm form1;
    private RichDocument document1;
    private RichRegion region1;
    private RegionModel regionModel;
    public RegionTest () {
        /*Here I try to put the same values as the constructor of TaskFlowId*/
        /*THERE IS NO DOCUMENTATION ANYWHERE :P*/
        DCTaskFlowBinding dctfb = TaskFlowRegionModel.getCurrentTaskFlowBinding("/WEB-INF/task-flow-definition.xml","taskDestinationA");
        //And here, dctfb is always NULL.
        /*I try removing the '.xml' extension of the name, but still not works*/
        //Fill the value of regionModel
        this.regionModel = new TaskFlowRegionModel(dctfb);
        /*Perhaps is better create a method to acquire the value,
          but I try in constructor first*/
    public void setForm1(RichForm form1) { this.form1 = form1; }
    public RichForm getForm1() { return form1; }
    public void setDocument1(RichDocument document1) { this.document1 = document1; }
    public RichDocument getDocument1() { return document1; }
    public void setRegion1(RichRegion region1) { this.region1 = region1; }
    public RichRegion getRegion1() { return region1; }
    public void setRegionModel(RegionModel regionModel) { this.regionModel = regionModel; }
    public RegionModel getRegionModel() { return regionModel; }
regionDestinationA.jsff
<?xml version='1.0' encoding='windows-1252'?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.0"
          xmlns:af="http://xmlns.oracle.com/adf/faces/rich">
<af:outputText value="Hello World!"/>
</jsp:root>So, my problem is in Backing Bean class (RegionTest.java). I don't know how I can acquire 'DCTaskFlowBinding' instance value; well, I don't know if that is the way to acquire the value of TaskFlowRegionModel, and even I don't know if this is the way to set the value of RegionModel. I don't know all of this because there isn't documentation yet :P
Some oracle-java-guru can help me, please?
JVN
PD: Environment: JDev TP4.

Answer 1

Hi,
your biggest problem is the use of internal classes that probably will change without further notice and lead to a broken application then
I don't think that the region model is supposed to work without ADF binding in this release. If you need a page region then the Trinidad region should be helpful (though it doesn't support you with navigation cases as the taskflow does)
I'l check internally if there is an option to do what you are trying to do. However, as mentioned, if you need to use internal classes then the answer probably is no.
Frank