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47 lines
1.7 KiB
47 lines
1.7 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.core.gfo_ndes.*;
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import gplx.dbs.qrys.*;
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class TdbUpdateWkr 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_update cmd = (Db_qry_update)cmdObj;
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int rv = 0;
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TdbTable tbl = engine.FetchTbl(cmd.Base_table());
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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 = (GfoNde)tbl.Rows().FetchAt_asGfoNde(i);
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if (crt.Matches(row)) {
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UpdateRow(cmd, 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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void UpdateRow(Db_qry_update cmd, GfoNde row) {
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for (int i = 0; i < cmd.Args().Count(); i++) {
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KeyVal p = (KeyVal)cmd.Args().Get_at(i);
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Db_arg prm = (Db_arg)p.Val();
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row.Write(p.Key(), prm.Val);
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}
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}
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public static TdbUpdateWkr new_() {TdbUpdateWkr rv = new TdbUpdateWkr(); return rv;}
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}
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