create procedure
urilbl_ac_init_db () 
{
  declare n, n_ins, n_strange integer;
  declare o_str varchar;
  set isolation = 'committed';

  urilbl_ac_init_log ('urilbl_ac_init_db: started');
  cl_exec('registry_set (''urilbl_ac_init_status'',''1'')');

  declare exit handler for sqlstate '*' {
    urilbl_ac_init_log (sprintf ('***ERROR %s:%s', __SQL_STATE, __SQL_MESSAGE));
    cl_exec('registry_set(''urilbl_ac_init_status'',''4711'')');
    goto finished;
  };

-- XXX test that this inference graph exists a priori
-- XXX check if the unresolved literal problem still needs a workaround

  for (sparql 
        define output:valmode 'LONG' 
        define input:inference 'facets' 
        select ?s ?o (lang(?o)) as ?lng where { ?s virtrdf:label ?o }) do 
    {
      if (__tag of rdf_box = __tag(o)) 
	o_str := cast (o as varchar);
      else if (isstring(o) and o not like 'Unresolved literal for ID%')
	{ 
	  o_str := o;
        }
      else
	{
          n_strange := n_strange + 1;
	  goto cont;
        } 

      n_ins := n_ins + 1;

      o_str := "LEFT"(o_str, 512);

      insert soft urilbl_complete_lookup_2 
           (ull_label_lang, ull_label_ruined, ull_iid, ull_label) 
          values (lng, urilbl_ac_ruin_label (o_str), s, o_str);

     cont:;
      n := n + 1;
      if (mod (n, 1000000) = 0) 
        urilbl_ac_init_log (sprintf ('urilbl_ac_init_db: %d rows, %d ins, %d strange...\n', 
                                      n, n_ins, n_strange));
      if (0 = mod (n, 10000))
	{
	  commit work;
	}
    }
  commit work;
  cl_exec('registry_set (''urilbl_ac_init_status'',''2'')');
 finished:;
  urilbl_ac_init_log (sprintf ('urilbl_ac_init_db: Finished. %d rows, %d ins, %d strange./n',
              n, n_ins, n_strange));
}
;

create procedure
cmp_label (in lbl_str varchar, in langs varchar)
{
  declare res any;
  declare q,best_q float;
  declare cur_iid any;
  declare cur_lbl varchar;
  declare n integer;

  res := vector();

--  dbg_printf ('cmp_label');
  cur_iid := null;
  best_q := 0;

  {
    declare exit handler for sqlstate 'S1TAT' { 
      goto done;
    };

    for (select ull_label_lang, ull_label, ull_iid
         from urilbl_complete_lookup_2 
         where ull_label_ruined like urilbl_ac_ruin_label (lbl_str) || '%') do
      {
        if (cur_iid is not null and ull_iid <> cur_iid)
          {
            res := vector_concat (res, vector (cur_lbl, id_to_iri(cur_iid)));
            n := n + 1;
            if (n >= 50) goto done;
            best_q := 0;
  	}

        cur_iid := ull_iid;
        q := cmp_get_lang_by_q (langs, ull_label_lang);

        if (q >= best_q) 
          {
            best_q := q;
            cur_lbl := ull_label;
	  }
      }
    res := vector_concat (res, vector (cur_lbl, id_to_iri (cur_iid)));
   done:;
    return res;
  }
}
;