JSF Data Table extension using sun's RI

Question

How do i modify the iteration logic of datatable in JSF? I need for 3 iteration the data table has to insert one row. How do i create custom component for these type of business logic?
It should iterate horizontally,

Answer 1

lets say you have a mainCollection and displayCollection.
Iterator mainIter  = mainCollection.iterator();
MainObject mainObj = null;
DisplayObject dispObject = new DisplayObject();
int counter = 1;
while(mainIter.hasNext()){
    mainObj = (MainObject)mainIter.next();
    dispObject.setSomething1(mainObject.getSomething1());
    dispObject.setSomething2(mainObject.getSomething2());
    dispObject.setSomething3(mainObject.getSomething3());
   if(counter%3==0){   // add the object to the list and create a new instance
       displayCollection.add(dispObject);
       dispObject = new DisplayObject();
counter =counter +1;
if(dispObject !=null && dispObject.getSomething1()!=null){
       displayCollection.add(dispObject);  // add if this object is not added as the size of the list was not divisible by 3
}Map this displayCollection in your JSP for display. You can have a single data table which will iterate over this collection.