for (int i=0; contexts!=null && i<contexts.length; i++)
{
SessionHandler sessionHandler = ((ContextHandler)contexts[i]).getChildHandlerByClass(SessionHandler.class);
if (sessionHandler != null)
{
SessionManager manager = sessionHandler.getSessionManager();
if (manager != null && manager instanceof JDBCSessionManager)
{
Set<String> successfullyExpiredIds = ((JDBCSessionManager)manager).expire(expiredSessionIds);
if (successfullyExpiredIds != null)
remainingIds.removeAll(successfullyExpiredIds);