01: /*
02: * hgcommons 7
03: * Hammurapi Group Common Library
04: * Copyright (C) 2003 Hammurapi Group
05: *
06: * This program is free software; you can redistribute it and/or
07: * modify it under the terms of the GNU Lesser General Public
08: * License as published by the Free Software Foundation; either
09: * version 2 of the License, or (at your option) any later version.
10: *
11: * This program is distributed in the hope that it will be useful,
12: * but WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * Lesser General Public License for more details.
15: *
16: * You should have received a copy of the GNU Lesser General Public
17: * License along with this library; if not, write to the Free Software
18: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19: *
20: * URL: http://www.hammurapi.biz/hammurapi-biz/ef/xmenu/hammurapi-group/products/products/hgcommons/index.html
21: * e-Mail: support@hammurapi.biz
22: */
23: package biz.hammurapi.util;
24:
25: import java.util.Iterator;
26: import java.util.Map;
27:
28: /**
29: * Converts collection into visitable
30: * @author Pavel Vlasov
31: * @version $Revision: 1.3 $
32: */
33: public class MapVisitable implements Visitable {
34: private Map map;
35:
36: public boolean accept(Visitor visitor) {
37: if (visitor == null || map == null) {
38: return false;
39: }
40:
41: if (visitor.visit(map)) {
42: Iterator it = map.entrySet().iterator();
43: while (it.hasNext()) {
44: Map.Entry entry = (Map.Entry) it.next();
45:
46: if (visitor.visit(entry)) {
47: VisitableBase.object2visitor(entry.getKey(),
48: visitor);
49: VisitableBase.object2visitor(entry.getValue(),
50: visitor);
51:
52: if (visitor instanceof PoliteVisitor) {
53: ((PoliteVisitor) visitor).leave(entry);
54: }
55: }
56: }
57:
58: if (visitor instanceof PoliteVisitor) {
59: ((PoliteVisitor) visitor).leave(map);
60: }
61: return true;
62: }
63:
64: return false;
65: }
66:
67: public MapVisitable(Map map) {
68: super();
69: this.map = map;
70: }
71: }
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