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Db: Add exec reader by prepared statement

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This commit is contained in:
gnosygnu 2017-03-24 09:02:22 -04:00
parent 7269befb14
commit 66f744b11d
4 changed files with 83 additions and 48 deletions
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9
140_dbs/src/gplx/dbs/Db_sql_.java
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@ -48,4 +48,13 @@ public class Db_sql_ {
}
return dirty ? bfr.To_bry_and_clear() : raw;
}
public static String Prep_in_from_ary(Object ary) {
Bry_bfr bfr = Bry_bfr_.New();
int len = Array_.Len(ary);
for (int i = 0; i < len; i++) {
if (i != 0) bfr.Add_byte(Byte_ascii.Comma);
bfr.Add_byte(Byte_ascii.Question);
}
return bfr.To_str_and_clear();
}
}

4
140_dbs/src/gplx/dbs/Db_stmt_.java
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@ -46,6 +46,10 @@ public class Db_stmt_ {
public static Db_stmt new_select_as_rdr(Db_conn conn, String sql) {
return conn.Stmt_new(Db_qry_sql.rdr_(sql));
}
public static Db_stmt New_sql_lines(Db_conn conn, String... lines) {
Db_qry qry = Db_qry_sql.sql_(String_.Concat_with_str("\n", lines));
return conn.Stmt_new(qry);
}
public static Err err_(Exception e, Db_stmt stmt, String proc) {
throw Err_.new_exc(e, "db", "db stmt failed", "proc", proc);
}

31
400_xowa/src/gplx/xowa/addons/wikis/fulltexts/indexers/bldrs/Xofulltext_indexer_args.java
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@ -18,29 +18,38 @@ import gplx.xowa.wikis.nss.*;
import gplx.gflucene.indexers.*;
public class Xofulltext_indexer_args implements Gfo_invk {
public byte[] wikis;
public String ns_ids;
public String idx_opt;
private String ns_ids_str;
public int[] ns_ids_ary;
public void Init_by_wiki(Xowe_wiki wiki) {
// wikis: null
if (wikis == null)
wikis = wiki.Domain_bry();
// ns: null / *
if (ns_ids == null)
ns_ids = "0";
else if (String_.Eq(ns_ids, "*")) {
// ns: null or *
// if null, use Main namespace
List_adp temp_ns_list = List_adp_.New();
if (ns_ids_str == null)
temp_ns_list.Add(Xow_ns_.Tid__main);
// if *, use all namespaces
else if (String_.Eq(ns_ids_str, "*")) {
Xow_ns[] ns_ary = wiki.Ns_mgr().Ords_ary();
int len = ns_ary.length;
Bry_bfr bfr = Bry_bfr_.New();
for (int i = 0; i < len; i++) {
Xow_ns ns = ns_ary[i];
int ns_id = ns.Id();
if (ns_id < 0) continue; // ignore media, special
if (i != 0) bfr.Add_byte(Byte_ascii.Comma);
bfr.Add_int_variable(ns_id);
temp_ns_list.Add(ns_id);
}
ns_ids = bfr.To_str_and_clear();
}
// else, parse ns
else {
byte[][] ns_bry_ary = Bry_split_.Split(Bry_.new_u8(ns_ids_str), Byte_ascii.Comma, true);
for (byte[] ns_bry : ns_bry_ary) {
temp_ns_list.Add(Bry_.To_int(ns_bry));
}
}
ns_ids_ary = (int[])temp_ns_list.To_ary_and_clear(int.class);
// idx_opt
if (idx_opt == null) {
@ -49,7 +58,7 @@ public class Xofulltext_indexer_args implements Gfo_invk {
}
public Object Invk(GfsCtx ctx, int ikey, String k, GfoMsg m) {
if (ctx.Match(k, "wikis_")) this.wikis = m.ReadBryOr("v", null);
else if (ctx.Match(k, "ns_ids")) this.ns_ids = m.ReadStrOr("v", null);
else if (ctx.Match(k, "ns_ids")) this.ns_ids_str = m.ReadStrOr("v", null);
else if (ctx.Match(k, "idx_opt")) this.idx_opt = m.ReadStrOr("v", null);
else return Gfo_invk_.Rv_unhandled;
return this;
@ -57,7 +66,7 @@ public class Xofulltext_indexer_args implements Gfo_invk {
public static Xofulltext_indexer_args New_by_json(gplx.langs.jsons.Json_nde args) {
Xofulltext_indexer_args rv = new Xofulltext_indexer_args();
rv.wikis = args.Get_as_bry("wikis");
rv.ns_ids = args.Get_as_str("ns_ids");
rv.ns_ids_str = args.Get_as_str("ns_ids");
rv.idx_opt = args.Get_as_str("idx_opt");
return rv;
}

21
400_xowa/src/gplx/xowa/addons/wikis/fulltexts/indexers/bldrs/Xofulltext_indexer_mgr.java
View File

@ -36,11 +36,19 @@ public class Xofulltext_indexer_mgr {
// get rdr and loop
Db_conn conn = page_tbl.Conn();
Db_rdr rdr = conn.Exec_rdr(Db_sql_.Make_by_fmt(String_.Ary
( "SELECT page_id, page_score, page_namespace, page_title, page_html_db_id"
int[] ns_ids = args.ns_ids_ary;
Db_stmt stmt = Db_stmt_.Null;
Db_rdr rdr = Db_rdr_.Empty;
try {
stmt = Db_stmt_.New_sql_lines(conn
, "SELECT page_id, page_score, page_namespace, page_title, page_html_db_id"
, "FROM page"
, "WHERE page_namespace IN ({0})"
), args.ns_ids));
, "WHERE page_namespace IN (" + Db_sql_.Prep_in_from_ary(ns_ids) + ")"
);
for (int ns_id : ns_ids) {
stmt.Crt_int("page_namespace", ns_id);
}
rdr = stmt.Exec_select__rls_auto();
while (rdr.Move_next()) {
// read vars
int page_namespace = rdr.Read_int("page_namespace");
@ -75,6 +83,11 @@ public class Xofulltext_indexer_mgr {
Gfo_usr_dlg_.Instance.Warn_many("", "", "err: ~{0}", Err_.Message_gplx_log(e));
}
}
}
finally {
rdr.Rls();
stmt.Rls();
}
// term indexer
indexer.Term();