Table sort is not working for columns.

Question

Hi,
I am using TableSort.java class. Followed https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sapportals.km.docs/library/user-interface-technology/wd%20java/wdjava%20archive/developing%20with%20tables%20in%20web%20dynpro.pdf
to create the action and assigned that to onSort event for the table. When I run, I see the ascending-descending icons besides the columns, but nothing happens when I click them. Here is the context.
Context
l
l
l ---User_Table
         > Email
         > Name
        |
         > Office
Here Name is a custom string (last name, first name). Also office is a custom string (office1, office2, ...etc).
Edited by: srinivas M on Feb 8, 2009 6:03 AM
Edited by: srinivas M on Feb 8, 2009 6:03 AM

Answer 1

Hi Srinivas,
  If you want to do an initial sort. You have to add the following method to the TableSorter class.
public void initialSort(String columnId, IWDNode dataSource) {
          // find the things we need
          String direction = WDTableColumnSortDirection.UP;
          IWDTableColumn column = (IWDTableColumn) table.getView().getElement(columnId);
          NodeElementByAttributeComparator elementComparator = (NodeElementByAttributeComparator) comparatorForColumn.get(column);
          if (elementComparator == null){
               //not a sortable column
               column.setSortState(WDTableColumnSortDirection.NOT_SORTABLE);
               return;
          // sorting
          elementComparator.setSortDirection(WDTableColumnSortDirection.valueOf(direction));
          dataSource.sortElements(elementComparator);
In your wdDoModifyView() after initializing the tablesorter class you have to call the above method.
if (firstTime) {
            IWDTable table = (IWDTable) view.getElement("Table");
            wdContext.currentContextElement().setTableSorter(
               new TableSorter(table, wdThis.wdGetSortAction(), null));
                  wdContext.currentContextElement().getTableSorter().initialSort("Your Column ID", wdContext.nodeUser_Search_Results());
Can you double check in your code if the table is bound to the node "User_Search_Results" and not "User_Table". If the table is bound to the "User_Table" then the sort will not work since in the code you are sorting the node "User_Search_Results".
If you want to implement sort on only one column you can use the alternate constructor for the TableSorter class.
TableSorter(IWDTable table, IWDAction sortAction, Map comparators, String[] sortableColumns)
You have to give a String array of columns that need to be sort enabled.
Regards,
Sanyev