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v2.7.2.1

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gnosygnu
2015-07-12 21:10:02 -04:00
commit 794b5a232f
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140_dbs/src/gplx/dbs/engines/tdbs/TdbDelete.java Normal file
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/*
XOWA: the XOWA Offline Wiki Application
Copyright (C) 2012 gnosygnu@gmail.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package gplx.dbs.engines.tdbs; import gplx.*; import gplx.dbs.*; import gplx.dbs.engines.*;
import gplx.core.criterias.*; import gplx.lists.*; /*GfoNde*/ import gplx.dbs.qrys.*;
class TdbDeleteWkr implements Db_qryWkr {
public Object Exec(Db_engine engineObj, Db_qry cmdObj) {
TdbEngine engine = TdbEngine.cast_(engineObj); Db_qry_delete cmd = (Db_qry_delete)cmdObj;
TdbTable tbl = engine.FetchTbl(cmd.Base_table());
List_adp deleted = List_adp_.new_();
int rv = 0;
if (cmd.Where() == Db_qry_.WhereAll) {
rv = tbl.Rows().Count();
tbl.Rows().Clear();
}
else {
Criteria crt = cmd.Where();
for (int i = 0; i < tbl.Rows().Count(); i++) {
GfoNde row = tbl.Rows().FetchAt_asGfoNde(i);
if (crt.Matches(row))
deleted.Add(row);
}
for (int i = 0; i < deleted.Count(); i++) {
GfoNde row = (GfoNde)deleted.Get_at(i);
tbl.Rows().Del(row);
rv++;
}
}
if (rv > 0) tbl.IsDirty_set(true);
return rv;
}
public static TdbDeleteWkr new_() {TdbDeleteWkr rv = new TdbDeleteWkr(); return rv;}
}