Using Groovy Functions in ADF

Question

I am using jdeveloper 11.1.2.0.0
according to previous thread I can use groovy function "sum" to calculate the number of rows in my iterator which contains the attribute "Status" equal to 20 just like that
bindings.MyIterator.viewObject.sum['Status == 20 ? 1 : 0'] != 0
then I can use that to display link if there is at least on row contains he attribute "Status" equal to 20
so I modified the attribute "Rendered" to be
rendered="#{bindings.MyIterator.viewObject.sum['Status == 20 ? 1 : 0'] != 0} "
now I have new requirement
I need to display the link if there are at least on row contains he attribute "Status" equal to 20 or equal to 21
I tried to modify the render link to be
rendered="#{bindings.MyIterator.viewObject.sum['Status == 20 or status == 21 ? 1 : 0'] != 0} " but it doesn't work :(
and tried
rendered="#{bindings.MyIterator.viewObject.sum['Status == 20 ? 1 : 0'] != 0 or bindings.MyIterator.viewObject.sum['Status == 21 ? 1 : 0'] != 0} "
but doesn't work too :(
how can I implement this requirement ?

Answer 1

You can create function in your managed bean, iterate through rows in your VO, and bind this function to rendered(or visible) property, for example:
public boolean isLinkVisible(){
   boolean visible = false;
   RowSetIterator iterator = yourViewObject.createRowSetIterator(null);
   iterator.reset();
   while (iterator.hasNext()) {
     Row row = iterator.next();
     if(row.getAttribute("Status").equals(20)){
        visible = true;
        break;
   iterator.closeRowSetIterator();
   return visible;
}Dario