// collapsing
            existNextPage = false;
            allPageCount = currentPageNumber;
        }
        currentStartRecordNumber = allRecordCount != 0 ? start + 1 : 0;
        currentEndRecordNumber = currentStartRecordNumber + pageSize - 1;
        currentEndRecordNumber = allRecordCount < currentEndRecordNumber ? allRecordCount : currentEndRecordNumber;

        final int pageRangeSize = 5;