|
|||||||||||||||||||
30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
PersistentPropertyData.java | 90% | 97.5% | 100% | 96.6% |
|
1 |
// Copyright 2005 The Apache Software Foundation
|
|
2 |
//
|
|
3 |
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
4 |
// you may not use this file except in compliance with the License.
|
|
5 |
// You may obtain a copy of the License at
|
|
6 |
//
|
|
7 |
// http://www.apache.org/licenses/LICENSE-2.0
|
|
8 |
//
|
|
9 |
// Unless required by applicable law or agreed to in writing, software
|
|
10 |
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
11 |
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
12 |
// See the License for the specific language governing permissions and
|
|
13 |
// limitations under the License.
|
|
14 |
|
|
15 |
package org.apache.tapestry.record;
|
|
16 |
|
|
17 |
import java.util.ArrayList;
|
|
18 |
import java.util.HashMap;
|
|
19 |
import java.util.Iterator;
|
|
20 |
import java.util.List;
|
|
21 |
import java.util.Map;
|
|
22 |
|
|
23 |
import org.apache.hivemind.util.Defense;
|
|
24 |
|
|
25 |
/**
|
|
26 |
* Stores persistent property changes concerning a single page. The data may be stored as an encoded
|
|
27 |
* string and the PPD can turn between encoded and object form.
|
|
28 |
*
|
|
29 |
* @author Howard M. Lewis Ship
|
|
30 |
* @since 4.0
|
|
31 |
*/
|
|
32 |
public class PersistentPropertyData |
|
33 |
{ |
|
34 |
/**
|
|
35 |
* Keyed on {@link org.apache.tapestry.record.ChangeKey}, values are new objects.
|
|
36 |
*/
|
|
37 |
|
|
38 |
private Map _changes;
|
|
39 |
|
|
40 |
private String _encoded;
|
|
41 |
|
|
42 |
private final PersistentPropertyDataEncoder _encoder;
|
|
43 |
|
|
44 |
/**
|
|
45 |
* Creates a new data using the specified encoder. The set of page changes is initially empty.
|
|
46 |
*/
|
|
47 |
|
|
48 | 6 |
public PersistentPropertyData(PersistentPropertyDataEncoder encoder)
|
49 |
{ |
|
50 | 6 |
Defense.notNull(encoder, "encoder");
|
51 |
|
|
52 | 6 |
_encoder = encoder; |
53 | 6 |
_changes = new HashMap();
|
54 |
} |
|
55 |
|
|
56 | 3 |
public String getEncoded()
|
57 |
{ |
|
58 | 3 |
if (_encoded == null) |
59 | 1 |
_encoded = encode(); |
60 |
|
|
61 | 3 |
return _encoded;
|
62 |
} |
|
63 |
|
|
64 | 6 |
public List getPageChanges()
|
65 |
{ |
|
66 | 6 |
if (_changes == null) |
67 |
{ |
|
68 | 2 |
List pageChanges = _encoder.decodePageChanges(_encoded); |
69 |
|
|
70 | 2 |
_changes = decode(pageChanges); |
71 |
|
|
72 | 2 |
return pageChanges;
|
73 |
} |
|
74 |
|
|
75 | 4 |
return createPageChangeList();
|
76 |
} |
|
77 |
|
|
78 | 4 |
public void store(String componentPath, String propertyName, Object newValue) |
79 |
{ |
|
80 | 4 |
Defense.notNull(propertyName, "propertyName");
|
81 |
|
|
82 | 4 |
if (_changes == null) |
83 | 0 |
_changes = decode(_encoder.decodePageChanges(_encoded)); |
84 |
|
|
85 | 4 |
ChangeKey key = new ChangeKey(componentPath, propertyName);
|
86 |
|
|
87 | 4 |
_changes.put(key, newValue); |
88 |
|
|
89 |
// With the new (or changed) value, the encoded string is no
|
|
90 |
// longer valid.
|
|
91 |
|
|
92 | 4 |
_encoded = null;
|
93 |
} |
|
94 |
|
|
95 | 3 |
public void storeEncoded(String encoded) |
96 |
{ |
|
97 | 3 |
Defense.notNull(encoded, "encoded");
|
98 |
|
|
99 | 3 |
_encoded = encoded; |
100 |
|
|
101 |
// The decoded data is no longer valid now.
|
|
102 |
|
|
103 | 3 |
_changes = null;
|
104 |
} |
|
105 |
|
|
106 | 5 |
private List createPageChangeList()
|
107 |
{ |
|
108 | 5 |
List result = new ArrayList();
|
109 |
|
|
110 | 5 |
Iterator i = _changes.entrySet().iterator(); |
111 |
|
|
112 | 5 |
while (i.hasNext())
|
113 |
{ |
|
114 | 5 |
Map.Entry me = (Map.Entry) i.next(); |
115 |
|
|
116 | 5 |
ChangeKey changeKey = (ChangeKey) me.getKey(); |
117 | 5 |
Object value = me.getValue(); |
118 |
|
|
119 | 5 |
PropertyChange change = new PropertyChangeImpl(changeKey.getComponentPath(), changeKey
|
120 |
.getPropertyName(), value); |
|
121 |
|
|
122 | 5 |
result.add(change); |
123 |
} |
|
124 |
|
|
125 | 5 |
return result;
|
126 |
} |
|
127 |
|
|
128 | 1 |
private String encode()
|
129 |
{ |
|
130 | 1 |
List changes = createPageChangeList(); |
131 |
|
|
132 | 1 |
return _encoder.encodePageChanges(changes);
|
133 |
} |
|
134 |
|
|
135 | 2 |
private Map decode(List pageChanges)
|
136 |
{ |
|
137 | 2 |
Map result = new HashMap();
|
138 |
|
|
139 | 2 |
Iterator i = pageChanges.iterator(); |
140 | 2 |
while (i.hasNext())
|
141 |
{ |
|
142 | 2 |
PropertyChange pc = (PropertyChange) i.next(); |
143 |
|
|
144 | 2 |
String propertyName = pc.getPropertyName(); |
145 | 2 |
String componentPath = pc.getComponentPath(); |
146 |
|
|
147 | 2 |
ChangeKey key = new ChangeKey(componentPath, propertyName);
|
148 |
|
|
149 | 2 |
result.put(key, pc.getNewValue()); |
150 |
} |
|
151 |
|
|
152 | 2 |
return result;
|
153 |
} |
|
154 |
} |
|