How to Sort single column in webdynpro table

Question

Hi all
I have requirement as follows.
i have webdynpro table with the following columns like Date,firstname,lastname,address etc.
now when i run the the application the table is populating the data at runtime that is fine.
i need as soon as table is loaded , Date field in the table should be displayed the values in the decending order...i have the requirement as follows...
how to sort the single column in table ...by default the values of the column displayed with decending order as soon as table displays at runtime....i dont want to click any button specific button to do the sort for that column
Regards
bindu

Answer 1

Hi, I solved the same problem by modifying the sort() method in the default TableSorter class so that it takes a column id and direction rather than an event.
I assume you have read the TableSorter tutorial.
Like this. (This was done on nw ce 7.1 btw but may work on older versions as well.
Oh and then you just call the sort method right after you have made the request
//Code that goes into controller/view to execute sorting
wdContext.currentContextElement().getPensionplanTableSorter().sort("MyColumnId", "Up", wdContext.nodePensionPlan());
//Part of TableSorter.java
//The original method that needs an event. Now it just calls the new method
public void sort(IWDCustomEvent wdEvent, IWDNode dataSource) {
     // find the things we need
     String columnId = wdEvent.getString("selectedColumn");
     String direction = wdEvent.getString("sortDirection");
     sort(columnId, direction, dataSource);
//This is the new method.
public void sort(String columnId, String direction, IWDNode dataSource) {
     if (columnId == null || direction == null ) {
          return;
     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);