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48 lines
1.8 KiB
48 lines
1.8 KiB
/*
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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.engines.tdbs; import gplx.*; import gplx.dbs.*; import gplx.dbs.engines.*;
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import gplx.core.criterias.*; import gplx.core.lists.*; /*GfoNde*/ import gplx.dbs.qrys.*; import gplx.core.gfo_ndes.*;
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class TdbDeleteWkr implements Db_qryWkr {
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public Object Exec(Db_engine engineObj, Db_qry cmdObj) {
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TdbEngine engine = TdbEngine.cast(engineObj); Db_qry_delete cmd = (Db_qry_delete)cmdObj;
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TdbTable tbl = engine.FetchTbl(cmd.Base_table());
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List_adp deleted = List_adp_.new_();
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int rv = 0;
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if (cmd.Where() == Db_qry_delete.Where__null) {
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rv = tbl.Rows().Count();
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tbl.Rows().Clear();
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}
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else {
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Criteria crt = cmd.Where();
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for (int i = 0; i < tbl.Rows().Count(); i++) {
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GfoNde row = tbl.Rows().FetchAt_asGfoNde(i);
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if (crt.Matches(row))
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deleted.Add(row);
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}
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for (int i = 0; i < deleted.Count(); i++) {
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GfoNde row = (GfoNde)deleted.Get_at(i);
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tbl.Rows().Del(row);
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rv++;
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}
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}
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if (rv > 0) tbl.IsDirty_set(true);
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return rv;
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}
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public static TdbDeleteWkr new_() {TdbDeleteWkr rv = new TdbDeleteWkr(); return rv;}
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}
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