Sorting is not working in datatable in PrimeFaces?

Question

Sorting is not working in datatable in PrimeFaces. Please suggest.

See below my .xhtml file

Answer 1

If you populate your table in the getter sorting wont work (as described above). You should put in your getter like:

public List getTableData() {
    if (tableDataList == null)
        tableDataList = dao.getTableData();
    return tableDataList;
}

You can then reset(refresh) your "cash" by punting tableDataList = null; if you wont your datatabele refreshed.