/*
XOWA: the XOWA Offline Wiki Application
Copyright (C) 2012-2017 gnosygnu@gmail.com
XOWA is licensed under the terms of the General Public License (GPL) Version 3,
or alternatively under the terms of the Apache License Version 2.0.
You may use XOWA according to either of these licenses as is most appropriate
for your project on a case-by-case basis.
The terms of each license can be found in the source code repository:
GPLv3 License: https://github.com/gnosygnu/xowa/blob/master/LICENSE-GPLv3.txt
Apache License: https://github.com/gnosygnu/xowa/blob/master/LICENSE-APACHE2.txt
*/
package gplx.dbs.engines.tdbs; import gplx.*; import gplx.dbs.*; import gplx.dbs.engines.*;
import gplx.core.criterias.*; import gplx.core.lists.*; /*GfoNde*/ import gplx.core.gfo_ndes.*;
import gplx.dbs.qrys.*;
class TdbUpdateWkr implements Db_qryWkr {
public Object Exec(Db_engine engineObj, Db_qry cmdObj) {
TdbEngine engine = TdbEngine.cast(engineObj); Db_qry_update cmd = (Db_qry_update)cmdObj;
int rv = 0;
TdbTable tbl = engine.FetchTbl(cmd.Base_table());
Criteria crt = cmd.Where();
for (int i = 0; i < tbl.Rows().Count(); i++) {
GfoNde row = (GfoNde)tbl.Rows().FetchAt_asGfoNde(i);
if (crt.Matches(row)) {
UpdateRow(cmd, row);
rv++;
}
}
if (rv > 0) tbl.IsDirty_set(true);
return rv;
}
void UpdateRow(Db_qry_update cmd, GfoNde row) {
for (int i = 0; i < cmd.Args().Count(); i++) {
Keyval p = (Keyval)cmd.Args().Get_at(i);
Db_arg prm = (Db_arg)p.Val();
row.Write(p.Key(), prm.Val);
}
}
public static TdbUpdateWkr new_() {TdbUpdateWkr rv = new TdbUpdateWkr(); return rv;}
}