Get client Id on server side.

Question

Hi,
I hace a scenario where there are 4 dynamic regions where taskFlows circulate at runtime. The problem is that I have a pageFragment in on off the taskFlow which includes a pie chart. This pie chart needs to exported as image when a button is clicked inside the pageFragment. This requires the clientId (relative to the region currently occupied) of the pieChart component to be used in server side as
FacesContext fctx = FacesContext.getCurrentInstance();
UIViewRoot root = fctx.getViewRoot();
root.invokeOnComponent(fctx,*clientId*,new DvtContextCallBack());
Is this possible somehow to get the clientId in sever side to do the above operation dynamically ?
Regards,
Vijai

Answer 1

Bump I found the solution myself,
UIComponent copm = findComponentInRoot("pieGraph1");
System.out.println(copm.getClientId(facesContext));
* Locate an UIComponent in view root with its component id. Use a recursive way to achieve this.
* @param id UIComponent id
* @return UIComponent object
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;
* Locate an UIComponent from its root component.
* Taken from http://www.jroller.com/page/mert?entry=how_to_find_a_uicomponent
* @param base root Component (parent)
* @param id UIComponent id
* @return UIComponent object
public static UIComponent findComponent(UIComponent base, String id) {
if (id.equals(base.getId()))
return base;
UIComponent children = null;
UIComponent result = null;
Iterator childrens = base.getFacetsAndChildren();
while (childrens.hasNext() && (result == null)) {
children = (UIComponent)childrens.next();
if (id.equals(children.getId())) {
result = children;
break;
result = findComponent(children, id);
if (result != null) {
break;
return result;
}