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55 lines
2.2 KiB
Java
55 lines
2.2 KiB
Java
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/*
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XOWA: the XOWA Offline Wiki Application
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Copyright (C) 2012 gnosygnu@gmail.com
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package gplx.dbs; import gplx.*;
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import gplx.dbs.metas.*; import gplx.dbs.sqls.*;
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class Db_diff_bldr {
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private final Bry_bfr bfr = Bry_bfr.new_();
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private final Db_sqlbldr__sqlite sql_bldr = new Db_sqlbldr__sqlite();
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public Db_diff_bldr() {sql_bldr.Bfr_(bfr);}
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public String Compare_db(String src_str, String trg_str) {
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// Io_url src_url = Io_url_.new_fil_(src_str);
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// Io_url trg_url = Io_url_.new_fil_(trg_str);
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// Db_conn src_conn = Db_conn_bldr.Instance.Get_or_new(src_url).Conn();
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// Db_conn trg_conn = Db_conn_bldr.Instance.Get_or_new(trg_url).Conn();
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Meta_tbl_mgr src_tbls = new Meta_tbl_mgr();
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Meta_tbl_mgr trg_tbls = new Meta_tbl_mgr();
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return Compare_tbls(src_tbls, trg_tbls);
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}
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public String Compare_tbls(Meta_tbl_mgr src_tbls, Meta_tbl_mgr trg_tbls) {
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int src_len = src_tbls.Len();
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for (int i = 0; i < src_len; ++i) {
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Meta_tbl_itm src_tbl = src_tbls.Get_at(i);
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Meta_tbl_itm trg_tbl = trg_tbls.Get_by(src_tbl.Name());
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if (trg_tbl == null) Tbl_delete(src_tbl);
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}
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int trg_len = trg_tbls.Len();
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for (int i = 0; i < trg_len; ++i) {
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Meta_tbl_itm trg_tbl = src_tbls.Get_at(i);
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Meta_tbl_itm src_tbl = trg_tbls.Get_by(trg_tbl.Name());
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if (src_tbl == null) Tbl_create(trg_tbl);
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}
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return bfr.To_str_and_clear();
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}
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private void Tbl_delete(Meta_tbl_itm tbl) {
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bfr.Add_str_a7("DROP TABLE ").Add_str_u8(tbl.Name()).Add_byte_nl();
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}
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private void Tbl_create(Meta_tbl_itm tbl) {
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// sql_bldr.Bld_create_tbl(tbl);
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}
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}
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