public class Split_wkr__rndm implements Split_wkr {
private final Split_rslt_wkr__rndm rslt_wkr = new Split_rslt_wkr__rndm();
private final Bry_bfr tmp_bfr = Bry_bfr_.New();
private final Db_attach_mgr attach_mgr = new Db_attach_mgr();
private Rndm_bldr_wkr bldr;
private int cur_ns_id = -1;
public void Split__init(Split_ctx ctx, Xow_wiki wiki, Db_conn wkr_conn) {
this.bldr = Rndm_addon.Get(wiki).Mgr().New_bldr();
ctx.Rslt_mgr().Reg_wkr(rslt_wkr);
}
public void Split__term(Split_ctx ctx) {
bldr.Exec_qry_end();
}
public void Split__trg__1st__new(Split_ctx ctx, Db_conn trg_conn) {
Rndm_qry_tbl mgr_tbl = new Rndm_qry_tbl(trg_conn);
mgr_tbl.Create_tbl();
}
public void Split__trg__nth__new(Split_ctx ctx, Db_conn trg_conn) {
if (cur_ns_id != ctx.Trg_ns()) {
if (cur_ns_id != -1) bldr.Exec_qry_end();
cur_ns_id = ctx.Trg_ns();
bldr.Exec_qry_bgn(Rndm_qry_itm.New_by_ns(ctx.Wiki(), cur_ns_id));
}
bldr.Exec_rng_bgn();
bldr.Conn().Txn_bgn("rndm");
}
public void Split__trg__nth__rls(Split_ctx ctx, Db_conn trg_conn) {
// make rndm_rng and add
Rndm_rng_itm rng_itm = bldr.Exec_rng_end_or_null();
if (rng_itm == null) return;
Rndm_rng_tbl rng_tbl = new Rndm_rng_tbl(trg_conn);
rng_tbl.Create_tbl();
Db_stmt rng_stmt = rng_tbl.Insert_stmt();
rng_tbl.Insert(
rng_stmt, rng_itm.Mgr_idx(), rng_itm.Rng_idx(), rng_itm.Seq_bgn(), rng_itm.Seq_end());
rng_stmt.Rls();
bldr.Conn().Txn_end();
// make rndm_seq and bulk copy
Rndm_seq_tbl seq_tbl = new Rndm_seq_tbl(trg_conn);
seq_tbl.Create_tbl();
Split_tbl_.Bld_insert_by_select(tmp_bfr, seq_tbl.Tbl_name(), seq_tbl.Flds());
tmp_bfr.Add_str_u8_fmt(
"WHERE {0} = {1} AND {2} = {3}",
seq_tbl.Fld__qry_idx(), bldr.Qry_idx(), seq_tbl.Fld__rng_idx(), bldr.Rng_idx());
attach_mgr.Conn_main_(trg_conn).Conn_links_(new Db_attach_itm("src_db", bldr.Conn()));
attach_mgr.Exec_sql(tmp_bfr.To_str_and_clear());
// bldr.Conn().Txn_bgn("rndm");
}
public void Split__exec(Split_ctx ctx, Split_rslt_mgr rslt_mgr, Xowd_page_itm page, int page_id) {
if (page.Ns_id() == gplx.xowa.wikis.nss.Xow_ns_.Tid__main && !page.Redirected()) {
bldr.Exec_seq_itm(page.Id());
rslt_wkr.On__nth__itm(
Rndm_seq_tbl.Db_row_size_fixed, bldr.Qry_idx(), bldr.Rng_idx(), bldr.Seq_in_qry());
}
}
public void Split__pages_loaded(
Split_ctx ctx, int ns_id, int score_bgn, int score_end) {} // rndm_wkr has no caching
}
