Tabelle, sortieren

Folgende Klasse kann eine Tabelle, deren Zeilen auf Beans basieren, sortieren:

public class TableColumnSorter<T> extends ViewerComparator {
   private String	property;
   private int		sortDirection;
 
   public TableColumnSorter(String property, int sortDirection) {
      this.property = property;
      this.sortDirection = sortDirection;
   }
 
   @Override
   public int compare(Viewer viewer, Object e1, Object e2) {
      int result = super.compare(viewer, getColumnValue(e1), getColumnValue(e2));
      if (sortDirection == SWT.UP)
         result *= -1;
      return result;
   }
 
   @SuppressWarnings("unchecked")
   public String getColumnValue(Object bean) {
      T result = null;
      if (bean != null && property != null) {
         try{
            if (PropertyUtils.isReadable(bean, property)) 
               result = (T) PropertyUtils.getProperty(bean, property);
            else {
               String methodName = "get" + ((char) (property.charAt(0)-32)) +  property.substring(1);
               result = (T) MethodUtils.invokeMethod(bean, methodName, bean);
            }
         }catch (Exception e){
            e.printStackTrace();
         }
      }
      return result.toString();
   }
}

Aufruf erfolgt wie folgt:

String propertyName = "nachname";
getTableViewer().setComparator(new TableColumnSorter(propertyName, SWT.DOWN);
getTable().setSortColumn(columnIndex);
getTable().setSortDirection(SWT.DOWN);