How to call partial trigger on JSFF component from separate managed bean?

eevictim

Guys and Gals,

Using JDev 11.1.1.2.0. Looked on the forums and google. Initial results aren't so great.

Is it possible to call a PPR on a JSFF component from a separate managed bean? It seems calling the FacesContext in this instance calls the root JSPX, which only contains one child: the RichDocument.

      UIComponent component =
         FacesContext.getCurrentInstance().getViewRoot().findComponent("pc1:table1");
      if (component != null)
      {
         AdfFacesContext context = AdfFacesContext.getCurrentInstance();
         context.addPartialTarget(component);
      }

      System.out.println(FacesContext.getCurrentInstance().getViewRoot().getChildCount());

Returns 1

Ideas for a workaround?

Edited by: LovettWB on Nov 17, 2010 3:39 AM

Edited by: LovettWB on Nov 17, 2010 4:11 AM

Edited by: LovettWB on Nov 17, 2010 4:12 AM

Joonas Linkola-Oracle

Then maybe this post will help (assuming your fragment is added to the page as a region): http://biemond.blogspot.com/2009/11/find-uicomponent-in-adf-task-flow.html

eevictim

If not possible, refreshing the entire JSFF would work. This refresh request is being sent from a managed bean connected to a dialog from within the JSFF. i.e. I'm not refreshing a region on a page, but the JSFF itself.

Joonas Linkola-Oracle

Hi,

Bind the component to the managed bean first (in component inspector Advanced > Binding), JDeveloper will create the getter/setter methods for you automatically. After that you can call AdfFacesContext.getCurrentInstance().addPartialTarget(propertyName) to refresh the component.

Regards,

Joonas

eevictim

My component is in another, separate, managed bean.

partTable is in bean TableCollectionListeners

My PPR is being called from DialogCollectionListeners

In this instance, how would I grab the handle for the component (partTable) so my DialogCollectionListener bean could "see" it for the AdfFacesContext.getCurrentInstance().addPartialTarget(propertyName)? I thought the ....findComponent("pc1:table1"); command would work, but it doesn't seem to find it.

I apologize. Should have cleared that up in my previous post.

Joonas Linkola-Oracle

Then maybe this post will help (assuming your fragment is added to the page as a region): http://biemond.blogspot.com/2009/11/find-uicomponent-in-adf-task-flow.html

eevictim

Looks promising! Thank you for your reply. I'll check it out in the morning, and let you know how it goes. I'm pooped!

eevictim

Thanks! Joonas, you've been a great help.

The code on the page you referenced was close, but the code on a page referenced in the user comments was even better:

http://www.jroller.com/mert/entry/how_to_find_a_uicomponent

My region is located in a facet, which the page you posted doesn't quite cover, but the page above fixed that. Here's the fix below:

In Managed Bean

      // search for the region ID (or task flow) in the base page
      UIComponent base = jsfUtils.findComponentInRoot("dynamicRegion");
      // now find component ID from within that region
      UIComponent partTable = jsfUtils.findComponent(base, "partTable");
      // call PPR on your found component
      AdfFacesContext.getCurrentInstance().addPartialTarget(partTable);

In JSFUtils utility class

   
   // used to locate region.  Could also find any component
   // located in the base ViewRoot()
   public static UIComponent findComponentInRoot(String id) {
    UIComponent component = null;

    FacesContext facesContext = FacesContext.getCurrentInstance();
    if (facesContext != null) {
      UIComponent root = facesContext.getViewRoot();
      component = findComponent(root, id);
    }

    return component;
}
    // Recursive method which finds your component within JSFF
    // regardless of facet or other UIComponents which may have children

public static UIComponent findComponent(UIComponent base, String id) {
    if (id.equals(base.getId()))
      return base;
  
    UIComponent kid = null;
    UIComponent result = null;
    Iterator kids = base.getFacetsAndChildren();
    while (kids.hasNext() && (result == null)) {
      kid = (UIComponent) kids.next();
      if (id.equals(kid.getId())) {
        result = kid;
        break;
      }
      result = findComponent(kid, id);
      if (result != null) {
        break;
      }
    }
    return result;
}

Good stuff to know!

eevictim

One more thing.

To do an effective search on a component ID, I believe you have to manually change the component's ID. If you let ADF assign the ID, there's no telling what the ID will become at runtime, which makes for an uncertain search outcome.

Joonas Linkola-Oracle

Glad to hear you got it working!

You're safe with JDeveloper generated component IDs (pc1, t1 etc.), but may run into problems if you don't have IDs assigned at design time at all (in which case they get generated at runtime).