???????????????????????????

                    //level load
                    long lvstart_Seq = (levelload_Start.getTime()-test_Start.getTime())/(driver_interval*1000) + 1;
                    long lvstop_Seq = 0;
                    if((levelload_End.getTime()-test_Start.getTime()) < driver_interval*1000)
                    {
                            lvstop_Seq = (levelload_End.getTime()-test_Start.getTime())/(driver_interval*1000) + 1;
                    }
                    else {
                            lvstop_Seq = (levelload_End.getTime()-test_Start.getTime())/(driver_interval*1000);
                    }
                    report.append("----> performance statistics for level load <---- ");
                    report.append("----> level load started in interval " + lvstart_Seq
                                            + " ?? Date: " + df.format(levelload_Start) + " GMT <---- ");
                            report.append("----> level load stopped in interval " + lvstop_Seq
                                                    + " ?? Date: " + df.format(levelload_End) + " GMT <---- ");
                          
                          
                            report
                                            .append(" ======== #CaseName Description Loop_Cnt RspTime avgRspTimePerExe Err_Cnt Exe_Cnt ");

                    //merge
                            String condition="";
                            if(Config.getInstance().noReportForEmptyDes) {
                                    condition = " and length(caseinfo.description)>0 ";
                            }
                            if (Config.getInstance().mergeResult)
                            {

                                  
                            sqlcmd = "select caseinfo.case_name??caseinfo.description?? sum(l_cnt) lp_cnt??" +
                            "sum(l_avg*l_cnt) total_resp??  sum(err_cnt) ?? sum(exe_cnt) ?? sum(slp) from (" +
                                            "select res.case_id?? trunc(timestampdiff(2??char(res.ts - exec.ts_start))/exec.driver_interval?? 0)+1 seq?? sum(loop_count) l_cnt?? " +
                    "avg(avg) l_avg?? sum(error_count) err_cnt?? sum(exe_count) exe_cnt?? sum(total_sleeptime) slp " +
                    "from(select a.test_start +( (b.interval_seq-1)*a.driver_interval) seconds ts??b.case_id??b.interval_seq " +
                    "from execution a?? tresult b where a.exec_id=b.exec_id and a.test_no="+test_no+" ) res??" +
                    "(SELECT test_no?? min(test_start) ts_start?? max(test_end) ts_end?? driver_interval FROM EXECUTION " +
                    "where test_no=" + test_no+"  group by test_no??driver_interval) exec??" +
                    "tresult where res.case_id = tresult.case_id and res.interval_seq=tresult.interval_seq " +
                    "group by res.case_id?? trunc(timestampdiff(2??char(res.ts - exec.ts_start))/exec.driver_interval?? 0)) result??" +
                    "caseinfo where caseinfo.case_id=result.case_id and seq between " + lvstart_Seq +" and "+ lvstop_Seq+
                    condition +
                    " group by caseinfo.case_name??caseinfo.description";
        
                            }
                            else {

                                    sqlcmd = "select caseinfo.case_name??caseinfo.description?? sum(l_cnt) lp_cnt??" +
                                    "sum(l_avg*l_cnt) total_resp??  sum(err_cnt) ?? sum(exe_cnt) ?? sum(slp)?? caseinfo.case_id from (" +
                                                    "select res.case_id?? trunc(timestampdiff(2??char(res.ts - exec.ts_start))/exec.driver_interval?? 0)+1 seq?? sum(loop_count) l_cnt?? " +
                            "avg(avg) l_avg?? sum(error_count) err_cnt?? sum(exe_count) exe_cnt?? sum(total_sleeptime) slp " +
                            "from(select a.test_start +( (b.interval_seq-1)*a.driver_interval) seconds ts??b.case_id??b.interval_seq " +
                            "from execution a?? tresult b where a.exec_id=b.exec_id and a.test_no="+test_no+" ) res??" +
                            "(SELECT test_no?? min(test_start) ts_start?? max(test_end) ts_end?? driver_interval FROM EXECUTION " +
                            "where test_no=" + test_no+"  group by test_no??driver_interval) exec??" +
                            "tresult where res.case_id = tresult.case_id and res.interval_seq=tresult.interval_seq " +
                            "group by res.case_id?? trunc(timestampdiff(2??char(res.ts - exec.ts_start))/exec.driver_interval?? 0)) result??" +
                            "caseinfo where caseinfo.case_id=result.case_id and seq between " + lvstart_Seq +" and "+ lvstop_Seq+
                            condition +
                            " group by caseinfo.case_id??caseinfo.case_name??caseinfo.description";
                            }
                            //System.out.println(sqlcmd);
                    rs = ps.executeQuery(sqlcmd);
                    while(rs.next())
                    {
                            report.append(rs.getString(1)+"??"+rs.getString(2)+"??"+rs.getString(3)+"??"+
                                            rs.getInt(4)/rs.getInt(3)+"??"+rs.getInt(4)/rs.getInt(6)+"??"+rs.getString(5)+"??"+
                                            rs.getString(6)+" ");
                    }
                    
                } catch (Exception e) {
                        e.printStackTrace();
                }
                  
                    return report;
            }
            public static void storeResultfromFile(String fileName) throws IOException
            {
                    FileReader fr = new FileReader(fileName);  //perf.log
                    BufferedReader br = new BufferedReader(fr);
                  
                    String line = br.readLine();
                    ArrayList dataList = new ArrayList();
                    boolean found = false;
                    while (line != null) {
                            if (line.indexOf("Final Report")<0 && (!found))
                               {
                                    line = br.readLine();
                                    continue;
                               }
                            else {
                                    found = true;
                            }
                            dataList.add(line);
                            line = br.readLine();
                    }
                  
                    //System.out.println(dataList);
                    String temp = new String();
                  
                    //Get test start time
                    temp = dataList.get(3).toString();
                    String testStart_timestamp = temp.substring(20?? 40);
                  
                    //Get test stop time
                    temp = dataList.get(4).toString();
                    String testStop_timestamp = temp.substring(20?? 40);
                  
                    //VU
                    temp = dataList.get(5).toString();
                    int vu = Integer.parseInt(temp.substring(10?? temp.lastIndexOf(" ")));
                  
                    //Scenario name
                    temp = dataList.get(7).toString();
                    String sc_Name = temp.substring(15?? temp.lastIndexOf(" "));
                  
                    //testcase number
                    temp = dataList.get(8).toString();
                    int tc_num = Integer.parseInt(temp.substring(21?? temp.lastIndexOf(" ")));
                  
            ArrayList testcases = new ArrayList();