/** * @param handle handle of SQLOperation. * @return display representing a particular SQLOperation. */ public SQLOperationDisplay getSQLOperationDisplay(String handle) { synchronized (webuiLock) { if (historicSqlOperations == null) { return null; } SQLOperationDisplay result = liveSqlOperations.get(handle); if (result != null) { return result; } return historicSqlOperations.get(handle); } }