| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| ObjectUtils |
|
| 5.5;5,5 |
| 1 | package org.apache.turbine.util; | |
| 2 | ||
| 3 | ||
| 4 | /* | |
| 5 | * Licensed to the Apache Software Foundation (ASF) under one | |
| 6 | * or more contributor license agreements. See the NOTICE file | |
| 7 | * distributed with this work for additional information | |
| 8 | * regarding copyright ownership. The ASF licenses this file | |
| 9 | * to you under the Apache License, Version 2.0 (the | |
| 10 | * "License"); you may not use this file except in compliance | |
| 11 | * with the License. You may obtain a copy of the License at | |
| 12 | * | |
| 13 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 14 | * | |
| 15 | * Unless required by applicable law or agreed to in writing, | |
| 16 | * software distributed under the License is distributed on an | |
| 17 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
| 18 | * KIND, either express or implied. See the License for the | |
| 19 | * specific language governing permissions and limitations | |
| 20 | * under the License. | |
| 21 | */ | |
| 22 | ||
| 23 | ||
| 24 | import java.io.BufferedInputStream; | |
| 25 | import java.io.BufferedOutputStream; | |
| 26 | import java.io.ByteArrayInputStream; | |
| 27 | import java.io.ByteArrayOutputStream; | |
| 28 | import java.io.IOException; | |
| 29 | import java.io.ObjectInputStream; | |
| 30 | import java.io.ObjectOutputStream; | |
| 31 | import java.io.Serializable; | |
| 32 | import java.util.Hashtable; | |
| 33 | import java.util.Map; | |
| 34 | ||
| 35 | /** | |
| 36 | * This is where common Object manipulation routines should go. | |
| 37 | * | |
| 38 | * @author <a href="mailto:nissim@nksystems.com">Nissim Karpenstein</a> | |
| 39 | * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a> | |
| 40 | * @version $Id: ObjectUtils.java 1524160 2013-09-17 18:37:14Z tv $ | |
| 41 | */ | |
| 42 | 0 | public abstract class ObjectUtils |
| 43 | { | |
| 44 | /** | |
| 45 | * Converts a map to a byte array for storage/serialization. | |
| 46 | * | |
| 47 | * @param map The Map to convert. | |
| 48 | * | |
| 49 | * @return A byte[] with the converted Map. | |
| 50 | * | |
| 51 | * @exception Exception A generic exception. | |
| 52 | */ | |
| 53 | public static byte[] serializeMap(Map<String, Object> map) | |
| 54 | throws Exception | |
| 55 | { | |
| 56 | 0 | Map<String, Serializable> saveData = |
| 57 | new Hashtable<String, Serializable>(map.size()); | |
| 58 | 0 | String key = null; |
| 59 | 0 | Object value = null; |
| 60 | 0 | byte[] byteArray = null; |
| 61 | ||
| 62 | 0 | for (Map.Entry<String, Object> entry : map.entrySet()) |
| 63 | { | |
| 64 | 0 | key = entry.getKey(); |
| 65 | 0 | value = entry.getValue(); |
| 66 | 0 | if (value instanceof Serializable) |
| 67 | { | |
| 68 | 0 | saveData.put (key, (Serializable)value); |
| 69 | } | |
| 70 | 0 | } |
| 71 | ||
| 72 | 0 | ByteArrayOutputStream baos = null; |
| 73 | 0 | BufferedOutputStream bos = null; |
| 74 | 0 | ObjectOutputStream out = null; |
| 75 | try | |
| 76 | { | |
| 77 | // These objects are closed in the finally. | |
| 78 | 0 | baos = new ByteArrayOutputStream(); |
| 79 | 0 | bos = new BufferedOutputStream(baos); |
| 80 | 0 | out = new ObjectOutputStream(bos); |
| 81 | ||
| 82 | 0 | out.writeObject(saveData); |
| 83 | 0 | out.flush(); |
| 84 | 0 | bos.flush(); |
| 85 | ||
| 86 | 0 | byteArray = baos.toByteArray(); |
| 87 | } | |
| 88 | finally | |
| 89 | { | |
| 90 | 0 | if (out != null) |
| 91 | { | |
| 92 | 0 | out.close(); |
| 93 | } | |
| 94 | 0 | if (bos != null) |
| 95 | { | |
| 96 | 0 | bos.close(); |
| 97 | } | |
| 98 | 0 | if (baos != null) |
| 99 | { | |
| 100 | 0 | baos.close(); |
| 101 | } | |
| 102 | } | |
| 103 | 0 | return byteArray; |
| 104 | } | |
| 105 | ||
| 106 | /** | |
| 107 | * Deserializes a single object from an array of bytes. | |
| 108 | * | |
| 109 | * @param objectData The serialized object. | |
| 110 | * | |
| 111 | * @return The deserialized object, or <code>null</code> on failure. | |
| 112 | */ | |
| 113 | @SuppressWarnings("unchecked") | |
| 114 | public static <T> T deserialize(byte[] objectData) | |
| 115 | { | |
| 116 | 0 | T object = null; |
| 117 | ||
| 118 | 0 | if (objectData != null) |
| 119 | { | |
| 120 | // These streams are closed in finally. | |
| 121 | 0 | ObjectInputStream in = null; |
| 122 | 0 | ByteArrayInputStream bin = new ByteArrayInputStream(objectData); |
| 123 | 0 | BufferedInputStream bufin = new BufferedInputStream(bin); |
| 124 | ||
| 125 | try | |
| 126 | { | |
| 127 | 0 | in = new ObjectInputStream(bufin); |
| 128 | ||
| 129 | // If objectData has not been initialized, an | |
| 130 | // exception will occur. | |
| 131 | 0 | object = (T)in.readObject(); |
| 132 | } | |
| 133 | 0 | catch (Exception e) |
| 134 | { | |
| 135 | // ignore | |
| 136 | } | |
| 137 | finally | |
| 138 | { | |
| 139 | 0 | try |
| 140 | { | |
| 141 | 0 | if (in != null) |
| 142 | { | |
| 143 | 0 | in.close(); |
| 144 | } | |
| 145 | ||
| 146 | 0 | bufin.close(); |
| 147 | 0 | bin.close(); |
| 148 | } | |
| 149 | 0 | catch (IOException e) |
| 150 | { | |
| 151 | // ignore | |
| 152 | 0 | } |
| 153 | 0 | } |
| 154 | } | |
| 155 | 0 | return object; |
| 156 | } | |
| 157 | } |