01: /**
02: * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
03: *
04: * Permission is hereby granted, free of charge, to any person obtaining a copy
05: * of this software and associated documentation files (the "Software"), to deal
06: * in the Software without restriction, including without limitation the rights
07: * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
08: * copies of the Software, and to permit persons to whom the Software is
09: * furnished to do so, subject to the following conditions:
10: *
11: * The above copyright notice and this permission notice shall be included in
12: * all copies or substantial portions of the Software.
13: *
14: * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15: * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17: * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18: * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19: * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20: * SOFTWARE.
21: */package com.liferay.portal.upgrade.util;
22:
23: import com.liferay.portal.upgrade.StagnantRowException;
24:
25: import java.util.Iterator;
26: import java.util.LinkedHashMap;
27: import java.util.LinkedHashSet;
28: import java.util.Map;
29: import java.util.Set;
30:
31: /**
32: * <a href="MemoryValueMapper.java.html"><b><i>View Source</i></b></a>
33: *
34: * @author Alexander Chow
35: * @author Brian Wing Shun Chan
36: *
37: */
38: public class MemoryValueMapper implements ValueMapper {
39:
40: public MemoryValueMapper() {
41: this (new LinkedHashSet());
42: }
43:
44: public MemoryValueMapper(Set exceptions) {
45: _map = new LinkedHashMap();
46: _exceptions = exceptions;
47: }
48:
49: public Object getNewValue(Object oldValue) throws Exception {
50: Object value = _map.get(oldValue);
51:
52: if (value == null) {
53: if (_exceptions.contains(oldValue)) {
54: value = oldValue;
55: } else {
56: throw new StagnantRowException(String.valueOf(oldValue));
57: }
58: }
59:
60: return value;
61: }
62:
63: public void mapValue(Object oldValue, Object newValue)
64: throws Exception {
65: _map.put(oldValue, newValue);
66: }
67:
68: public void appendException(Object exception) {
69: _exceptions.add(exception);
70: }
71:
72: public Iterator iterator() throws Exception {
73: return _map.keySet().iterator();
74: }
75:
76: public int size() throws Exception {
77: return _map.size();
78: }
79:
80: public Map getMap() {
81: return _map;
82: }
83:
84: private Map _map;
85: private Set _exceptions;
86:
87: }
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