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76 lines
3.0 KiB
Java
76 lines
3.0 KiB
Java
/*
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XOWA: the XOWA Offline Wiki Application
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Copyright (C) 2012-2017 gnosygnu@gmail.com
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XOWA is licensed under the terms of the General Public License (GPL) Version 3,
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or alternatively under the terms of the Apache License Version 2.0.
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You may use XOWA according to either of these licenses as is most appropriate
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for your project on a case-by-case basis.
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The terms of each license can be found in the source code repository:
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GPLv3 License: https://github.com/gnosygnu/xowa/blob/master/LICENSE-GPLv3.txt
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Apache License: https://github.com/gnosygnu/xowa/blob/master/LICENSE-APACHE2.txt
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*/
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package gplx.dbs; import gplx.*;
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import gplx.dbs.metas.*;
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public class Db_conn_utl {
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public static Db_conn Conn__new(String url_rel) {
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Db_conn_bldr.Instance.Reg_default_mem();
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return Db_conn_bldr.Instance.Get_or_new(Io_url_.mem_fil_("mem/" + url_rel)).Conn();
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}
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public static void Tbl__new(Db_conn conn, String tbl, Dbmeta_fld_itm[] flds, Object[]... rows) {
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conn.Meta_tbl_create(Dbmeta_tbl_itm.New(tbl, flds));
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int rows_len = rows.length;
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Db_stmt stmt = conn.Stmt_insert(tbl, Dbmeta_fld_itm.To_str_ary(flds));
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for (int i = 0; i < rows_len; ++i) {
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Object[] row = rows[i];
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int dat_len = row.length;
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stmt.Clear();
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for (int j = 0; j < dat_len; ++j) {
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Dbmeta_fld_itm fld = flds[j];
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String fld_name = fld.Name();
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Object val = row[j];
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switch (fld.Type().Tid_ansi()) {
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case Dbmeta_fld_tid.Tid__bool: stmt.Val_bool_as_byte (fld_name, Bool_.Cast(val)); break;
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case Dbmeta_fld_tid.Tid__byte: stmt.Val_byte (fld_name, Byte_.Cast(val)); break;
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case Dbmeta_fld_tid.Tid__int: stmt.Val_int (fld_name, Int_.Cast(val)); break;
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case Dbmeta_fld_tid.Tid__long: stmt.Val_long (fld_name, Long_.cast(val)); break;
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case Dbmeta_fld_tid.Tid__float: stmt.Val_float (fld_name, Float_.cast(val)); break;
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case Dbmeta_fld_tid.Tid__double: stmt.Val_double (fld_name, Double_.cast(val)); break;
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case Dbmeta_fld_tid.Tid__str: stmt.Val_str (fld_name, String_.cast(val)); break;
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case Dbmeta_fld_tid.Tid__bry: stmt.Val_bry (fld_name, Bry_.cast(val)); break;
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}
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}
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stmt.Exec_insert();
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}
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}
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public static void Insert(Db_conn conn, String tbl_name, String[] flds, Object[]... rows) {
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Db_stmt stmt = Db_stmt_.new_insert_(conn, tbl_name, flds);
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int flds_len = flds.length;
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int rows_len = rows.length;
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for (int i = 0; i < rows_len; ++i) {
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Object[] row = rows[i];
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stmt.Clear();
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for (int j = 0; j < flds_len; ++j)
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Db_stmt_.Val_by_obj(stmt, flds[j], row[j]);
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stmt.Exec_insert();
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}
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}
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public static Object[][] Select(Db_conn conn, Db_qry qry) {
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List_adp rv = List_adp_.New();
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Db_rdr rdr = conn.Stmt_new(qry).Exec_select__rls_auto();
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try {
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while (rdr.Move_next()) {
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int fld_len = rdr.Fld_len();
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Object[] row = new Object[fld_len];
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for (int i = 0; i < fld_len; ++i)
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row[i] = rdr.Read_at(i);
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rv.Add(row);
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}
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} finally {rdr.Rls();}
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return (Object[][])rv.To_ary_and_clear(Object[].class);
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}
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}
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