1 /*
2 * File: Data.java
3 * Created: 22.10.2006 17:11:19
4 *
5 * Copyright 2006 Michal Burda.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 package net.sf.webmancer.db;
23
24 import java.util.Collection;
25 import java.util.HashMap;
26 import java.util.Map;
27
28 import net.sf.webmancer.util.immutable.ImmutableCollection;
29 import net.sf.webmancer.util.immutable.ImmutableMap;
30
31 /**
32 * @author Michal Burda
33 *
34 */
35 public class Data implements IData {
36
37 /**
38 *
39 */
40 private Map<String, IAttribute> attributes;
41
42 /**
43 *
44 */
45 private Collection<Map<IAttribute, ICell>> rows;
46
47 /**
48 * Constructs the Data.
49 *
50 */
51 public Data() {
52 super();
53 this.attributes = new HashMap<String, IAttribute>();
54 }
55
56 /**
57 * @see net.sf.webmancer.db.IData#getAttributes()
58 */
59 public Map<String, IAttribute> getAttributes() {
60 //TODO whenever the Immutable* class is used, a caching mechanism may be introduced!
61 return new ImmutableMap<String, IAttribute>(attributes);
62 }
63
64 /**
65 * @see net.sf.webmancer.db.IData#getRows()
66 */
67 public Collection<Map<IAttribute, ICell>> getRows() {
68 return new ImmutableCollection<Map<IAttribute,ICell>>(rows);
69 }
70
71 /**
72 * @return
73 */
74 public Map<String, IAttribute> getModifiableAttributes() {
75 return attributes;
76 }
77
78 /**
79 * @return
80 */
81 public Collection<Map<IAttribute, ICell>> getModifiableRows() {
82 return rows;
83 }
84 }