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43 lines
1.7 KiB
43 lines
1.7 KiB
9 years ago
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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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public class Db_cmd_mode {
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Db_cmd_mode(int val) {this.val = val;}
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public int Val() {return val;} int val;
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public Db_cmd_mode MarkUpdated() {return this == Retrieved ? Updated : this;} // Created/Deleted noops
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public boolean Modified() {return this == Created || this == Updated;}
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public static final byte Tid_create = 1, Tid_update = 2, Tid_delete = 3, Tid_ignore = 4;
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public static final Db_cmd_mode
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Created = new Db_cmd_mode(Tid_create)
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, Updated = new Db_cmd_mode(Tid_update)
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, Deleted = new Db_cmd_mode(Tid_delete)
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, Retrieved = new Db_cmd_mode(Tid_ignore)
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;
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public static byte To_update(byte cur) {
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switch (cur) {
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case Tid_create: // ignore update if item is already marked for create
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case Tid_delete: // ignore update if item is already marked for delete (might want to throw error)
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return cur;
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case Tid_ignore: // must mark for update
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case Tid_update: // return self
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return Tid_update;
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default: throw Exc_.new_unhandled(cur);
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}
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}
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}
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