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30 day Evaluation License registered to hlship@comcast.net Your 30 day evaluation period has expired. Please visit http://www.cenqua.com to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
AttributeHolder.java | - | 19.2% | 55.6% | 28.6% |
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1 | // Copyright 2004, 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.test.mock; | |
16 | ||
17 | import java.io.ByteArrayInputStream; | |
18 | import java.io.ByteArrayOutputStream; | |
19 | import java.io.IOException; | |
20 | import java.io.ObjectInputStream; | |
21 | import java.io.ObjectOutputStream; | |
22 | import java.util.Collections; | |
23 | import java.util.Enumeration; | |
24 | import java.util.HashMap; | |
25 | import java.util.Map; | |
26 | import java.util.Set; | |
27 | ||
28 | import org.apache.hivemind.ApplicationRuntimeException; | |
29 | ||
30 | /** | |
31 | * | |
32 | * Base class for holders of named attributes such as | |
33 | * {@link javax.servlet.http.HttpSession}, | |
34 | * {@link javax.servlet.http.HttpServletRequest} | |
35 | * and {@link javax.servlet.ServletContext}. | |
36 | * | |
37 | * | |
38 | * @author Howard Lewis Ship | |
39 | * @since 4.0 | |
40 | */ | |
41 | ||
42 | public class AttributeHolder | |
43 | { | |
44 | private Map _attributes = new HashMap(); | |
45 | ||
46 | 114 | public Object getAttribute(String name) |
47 | { | |
48 | 114 | return _attributes.get(name); |
49 | } | |
50 | ||
51 | 92 | public Enumeration getAttributeNames() |
52 | { | |
53 | 92 | return getEnumeration(_attributes); |
54 | } | |
55 | ||
56 | 113 | protected Enumeration getEnumeration(Map map) |
57 | { | |
58 | 113 | return Collections.enumeration(map.keySet()); |
59 | } | |
60 | ||
61 | 0 | public String[] getAttributeNamesArray() |
62 | { | |
63 | 0 | Set keys = _attributes.keySet(); |
64 | 0 | int count = keys.size(); |
65 | ||
66 | 0 | String[] array = new String[count]; |
67 | ||
68 | 0 | return (String[]) keys.toArray(array); |
69 | } | |
70 | ||
71 | 193 | public void setAttribute(String name, Object value) |
72 | { | |
73 | 193 | _attributes.put(name, value); |
74 | } | |
75 | ||
76 | 43 | public void removeAttribute(String name) |
77 | { | |
78 | 43 | _attributes.remove(name); |
79 | } | |
80 | ||
81 | /** | |
82 | * Serializes and then deserializes the {@link Map} | |
83 | * containing all attributes. | |
84 | * | |
85 | **/ | |
86 | ||
87 | 0 | public void simulateFailover() |
88 | { | |
89 | 0 | byte[] serialized = serializeAttributes(); |
90 | ||
91 | 0 | _attributes = null; |
92 | ||
93 | 0 | Map restoredAttributes = deserializeAttributes(serialized); |
94 | ||
95 | 0 | _attributes = restoredAttributes; |
96 | } | |
97 | ||
98 | 0 | private byte[] serializeAttributes() |
99 | { | |
100 | 0 | try |
101 | { | |
102 | 0 | ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
103 | 0 | ObjectOutputStream oos = new ObjectOutputStream(bos); |
104 | ||
105 | 0 | oos.writeObject(_attributes); |
106 | ||
107 | 0 | oos.close(); |
108 | ||
109 | 0 | return bos.toByteArray(); |
110 | } | |
111 | catch (IOException ex) | |
112 | { | |
113 | 0 | throw new ApplicationRuntimeException("Unable to serialize attributes.", ex); |
114 | } | |
115 | } | |
116 | ||
117 | 0 | private Map deserializeAttributes(byte[] serialized) |
118 | { | |
119 | 0 | try |
120 | { | |
121 | 0 | ByteArrayInputStream bis = new ByteArrayInputStream(serialized); |
122 | 0 | ObjectInputStream ois = new ObjectInputStream(bis); |
123 | ||
124 | 0 | Map result = (Map) ois.readObject(); |
125 | ||
126 | 0 | return result; |
127 | } | |
128 | catch (Exception ex) | |
129 | { | |
130 | 0 | throw new ApplicationRuntimeException("Unable to deserialize attributes.", ex); |
131 | } | |
132 | } | |
133 | } |
|