public void Cmd_bgn(Xob_bldr bldr) {
   Db_conn conn = Xob_db_file.new__file_make(wiki.Fsys_mgr().Root_dir()).Conn();
   Xob_xfer_temp_tbl.Create_table(conn);
   Db_stmt trg_stmt = Xob_xfer_temp_tbl.Insert_stmt(conn);
   conn.Txn_bgn();
   DataRdr rdr = conn.Exec_sql_as_rdr(Sql_select);
   Xob_xfer_temp_itm temp_itm = new Xob_xfer_temp_itm();
   Xof_img_size img_size = new Xof_img_size();
   byte[] cur_ttl = Bry_.Empty;
   byte cur_repo = Byte_.Max_value_127;
   while (rdr.MoveNextPeer()) {
     temp_itm.Clear();
     temp_itm.Load(rdr);
     if (Bry_.Eq(cur_ttl, temp_itm.Orig_file_ttl())) { // same ttl; DATE:2015-03-22
       if (temp_itm.Orig_repo()
           != cur_repo) // if repo is different, ignore 2nd; handles images in both repos; take 1st
         // only (which should be local)
         continue;
     } else { // new ttl; update ttl, repo
       cur_ttl = temp_itm.Orig_file_ttl();
       cur_repo = temp_itm.Orig_repo();
     }
     if (temp_itm.Chk(img_size)) temp_itm.Insert(trg_stmt, img_size);
   }
   conn.Txn_end();
 }
 private void Init_bldr_bmks() {
   if (!resume_enabled) // clear cfg entries if resume disabled; note that disabled by default;
     // DATE:2014-10-24
     bldr_cfg_tbl.Delete_grp(Cfg_fsdb_make);
   Db_cfg_hash bmk_hash = bldr_cfg_tbl.Select_as_hash(Cfg_fsdb_make);
   String tier_id_str = bmk_hash.Get_by(Cfg_tier_id_bmk).To_str_or(null);
   if (tier_id_str == null) { // bmks not found; new db;
     bldr_conn.Txn_bgn("bldr__fsdb_make__bldr_conn");
     bldr_cfg_tbl.Insert_int(Cfg_fsdb_make, Cfg_tier_id_bmk, tier_id_bmk);
     bldr_cfg_tbl.Insert_int(Cfg_fsdb_make, Cfg_page_id_bmk, page_id_bmk);
     bldr_cfg_tbl.Insert_int(Cfg_fsdb_make, Cfg_lnki_id_bmk, lnki_id_bmk);
     bldr_conn.Txn_end();
     if (tier_id_bmk == -1) tier_id_bmk = 0;
     if (page_id_bmk == -1) page_id_bmk = 0;
     if (lnki_id_bmk == -1) lnki_id_bmk = 0;
   } else {
     if (tier_id_bmk == -1) {
       tier_id_bmk = Int_.parse(tier_id_str);
       usr_dlg.Note_many("", "", "restoring from bmk: tier_id=~{0}", tier_id_bmk);
     }
     if (page_id_bmk == -1) {
       page_id_bmk = bmk_hash.Get_by(Cfg_page_id_bmk).To_int();
       usr_dlg.Note_many("", "", "restoring from bmk: page_id=~{0}", page_id_bmk);
     }
     if (lnki_id_bmk == -1) {
       lnki_id_bmk = bmk_hash.Get_by(Cfg_lnki_id_bmk).To_int();
       usr_dlg.Note_many("", "", "restoring from bmk: lnki_id=~{0}", lnki_id_bmk);
     }
   }
   tier_id_val = tier_id_bmk;
   page_id_val = page_id_bmk;
   lnki_id_val = lnki_id_bmk;
 }