01: /* Copyright (C) 2004 - 2007 db4objects Inc. http://www.db4o.com
02:
03: This file is part of the db4o open source object database.
04:
05: db4o is free software; you can redistribute it and/or modify it under
06: the terms of version 2 of the GNU General Public License as published
07: by the Free Software Foundation and as clarified by db4objects' GPL
08: interpretation policy, available at
09: http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
10: Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
11: Suite 350, San Mateo, CA 94403, USA.
12:
13: db4o is distributed in the hope that it will be useful, but WITHOUT ANY
14: WARRANTY; without even the implied warranty of MERCHANTABILITY or
15: FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16: for more details.
17:
18: You should have received a copy of the GNU General Public License along
19: with this program; if not, write to the Free Software Foundation, Inc.,
20: 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21: package com.db4o.test;
22:
23: import java.io.*;
24: import java.util.*;
25:
26: import com.db4o.*;
27: import com.db4o.test.types.*;
28:
29: public class MapEntries {
30:
31: static String FILE = "hm.yap";
32:
33: HashMap hm;
34:
35: public static void main(String[] args) {
36: // createAndDelete();
37:
38: set();
39: check();
40: LogAll.run(FILE);
41: update();
42: check();
43: LogAll.run(FILE);
44: }
45:
46: static void createAndDelete() {
47: new File(FILE).delete();
48: ObjectContainer con = Db4o.openFile(FILE);
49: HashMap map = new HashMap();
50: map.put("delme", new Integer(99));
51: con.set(map);
52: con.close();
53: con = Db4o.openFile(FILE);
54: con.delete(con.get(new HashMap()).next());
55: con.close();
56: LogAll.run(FILE);
57: }
58:
59: static void check() {
60: ObjectContainer con = Db4o.openFile(FILE);
61: System.out.println("Entry elements: "
62: + con.get(new com.db4o.config.Entry()).size());
63: con.close();
64: }
65:
66: static void set() {
67: new File(FILE).delete();
68: ObjectContainer con = Db4o.openFile(FILE);
69: MapEntries me = new MapEntries();
70: me.hm = new HashMap();
71: me.hm.put("t1", new ObjectSimplePublic());
72: me.hm.put("t2", new ObjectSimplePublic());
73: con.set(me);
74: con.close();
75: }
76:
77: static void update() {
78: ObjectContainer con = Db4o.openFile(FILE);
79: ObjectSet set = con.get(new MapEntries());
80: while (set.hasNext()) {
81: MapEntries me = (MapEntries) set.next();
82: me.hm.put("t1", new Integer(100));
83: con.set(me.hm);
84: }
85: con.close();
86: }
87:
88: }
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