EventListener[] list = listenerList.getListeners(DbRelationshipListener.class);
for (int i = 0; i < list.length; i++) {
DbRelationshipListener temp = (DbRelationshipListener) list[i];
switch (e.getId()) {
case MapEvent.ADD:
temp.dbRelationshipAdded(e);
break;
case MapEvent.CHANGE:
temp.dbRelationshipChanged(e);
break;
case MapEvent.REMOVE: