Sorting a CellTable server-side

Question

I\'m currently using a Gwt CellTable, bound to my GAE/Objectify backend via RPC calls.

All right now! :-)

Then I want to sort columns, so I read http://code.goog

Answer 1

You can keep a list of column names ordered as they are in the table:

List columnNames = new ArrayList();

table.addColumn(surnameColumn, "surname");
columnNames.add("surname");

// add the other columns

Then when you need to get the sort column name:

String sortColumnName;
ColumnSortList sortList = table.getColumnSortList();
if (sortList != null && sortList.size() != 0){
     Column  sortColumn = (Column ) 
                                           sortList.get(0).getColumn();
     Integer columnIndex = table.getColumnIndex(sortColumn);
     sortColumnName = columnNames.get(columnIndex);
}

// do your rpc call

*where MyEntity is your data object displayed in the cell table.