Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
ObjectUtils |
|
| 5.5;5,5 |
1 | package org.apache.turbine.util; | |
2 | ||
3 | /* | |
4 | * Licensed to the Apache Software Foundation (ASF) under one | |
5 | * or more contributor license agreements. See the NOTICE file | |
6 | * distributed with this work for additional information | |
7 | * regarding copyright ownership. The ASF licenses this file | |
8 | * to you under the Apache License, Version 2.0 (the | |
9 | * "License"); you may not use this file except in compliance | |
10 | * with the License. You may obtain a copy of the License at | |
11 | * | |
12 | * http://www.apache.org/licenses/LICENSE-2.0 | |
13 | * | |
14 | * Unless required by applicable law or agreed to in writing, | |
15 | * software distributed under the License is distributed on an | |
16 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
17 | * KIND, either express or implied. See the License for the | |
18 | * specific language governing permissions and limitations | |
19 | * under the License. | |
20 | */ | |
21 | ||
22 | import java.io.ByteArrayInputStream; | |
23 | import java.io.ByteArrayOutputStream; | |
24 | import java.io.IOException; | |
25 | import java.io.ObjectInputStream; | |
26 | import java.io.ObjectOutputStream; | |
27 | import java.io.Serializable; | |
28 | import java.util.Map; | |
29 | ||
30 | /** | |
31 | * This is where common Object manipulation routines should go. | |
32 | * | |
33 | * @author <a href="mailto:nissim@nksystems.com">Nissim Karpenstein</a> | |
34 | * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a> | |
35 | * @version $Id: ObjectUtils.java 1812628 2017-10-19 12:34:25Z gk $ | |
36 | */ | |
37 | 0 | public abstract class ObjectUtils |
38 | { | |
39 | /** | |
40 | * Converts a map to a byte array for storage/serialization. | |
41 | * | |
42 | * @param map The Map to convert. | |
43 | * | |
44 | * @return A byte[] with the converted Map. | |
45 | * | |
46 | * @throws Exception A generic exception. | |
47 | */ | |
48 | public static byte[] serializeMap(Map<String, Object> map) | |
49 | throws Exception | |
50 | { | |
51 | 1 | byte[] byteArray = null; |
52 | ||
53 | 1 | for (Object value : map.values()) |
54 | { | |
55 | 1 | if (! (value instanceof Serializable)) |
56 | { | |
57 | 0 | throw new Exception("Could not serialize, value is not serializable:" + value); |
58 | } | |
59 | 1 | } |
60 | ||
61 | 1 | ByteArrayOutputStream baos = null; |
62 | 1 | ObjectOutputStream out = null; |
63 | try | |
64 | { | |
65 | // These objects are closed in the finally. | |
66 | 1 | baos = new ByteArrayOutputStream(1024); |
67 | 1 | out = new ObjectOutputStream(baos); |
68 | ||
69 | 1 | out.writeObject(map); |
70 | 1 | out.flush(); |
71 | ||
72 | 1 | byteArray = baos.toByteArray(); |
73 | } | |
74 | finally | |
75 | { | |
76 | 1 | if (out != null) |
77 | { | |
78 | 1 | out.close(); |
79 | } | |
80 | 1 | if (baos != null) |
81 | { | |
82 | 1 | baos.close(); |
83 | } | |
84 | } | |
85 | ||
86 | 1 | return byteArray; |
87 | } | |
88 | ||
89 | /** | |
90 | * Deserializes a single object from an array of bytes. | |
91 | * | |
92 | * @param objectData The serialized object. | |
93 | * | |
94 | * @return The deserialized object, or <code>null</code> on failure. | |
95 | */ | |
96 | @SuppressWarnings("unchecked") | |
97 | public static <T> T deserialize(byte[] objectData) | |
98 | { | |
99 | 0 | T object = null; |
100 | ||
101 | 0 | if (objectData != null) |
102 | { | |
103 | // These streams are closed in finally. | |
104 | 0 | ObjectInputStream in = null; |
105 | 0 | ByteArrayInputStream bin = new ByteArrayInputStream(objectData); |
106 | ||
107 | try | |
108 | { | |
109 | 0 | in = new ObjectInputStream(bin); |
110 | ||
111 | // If objectData has not been initialized, an | |
112 | // exception will occur. | |
113 | 0 | object = (T)in.readObject(); |
114 | } | |
115 | 0 | catch (Exception e) |
116 | { | |
117 | // ignore | |
118 | } | |
119 | finally | |
120 | { | |
121 | 0 | try |
122 | { | |
123 | 0 | if (in != null) |
124 | { | |
125 | 0 | in.close(); |
126 | } | |
127 | 0 | bin.close(); |
128 | } | |
129 | 0 | catch (IOException e) |
130 | { | |
131 | // ignore | |
132 | 0 | } |
133 | 0 | } |
134 | } | |
135 | 0 | return object; |
136 | } | |
137 | } |