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<a name="1" href="#1">1</a> <em class="jxr_comment">/*</em>
<a name="2" href="#2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one</em>
<a name="3" href="#3">3</a> <em class="jxr_comment"> * or more contributor license agreements. See the NOTICE file</em>
<a name="4" href="#4">4</a> <em class="jxr_comment"> * distributed with this work for additional information</em>
<a name="5" href="#5">5</a> <em class="jxr_comment"> * regarding copyright ownership. The ASF licenses this file</em>
<a name="6" href="#6">6</a> <em class="jxr_comment"> * to you under the Apache License, Version 2.0 (the</em>
<a name="7" href="#7">7</a> <em class="jxr_comment"> * "License"); you may not use this file except in compliance</em>
<a name="8" href="#8">8</a> <em class="jxr_comment"> * with the License. You may obtain a copy of the License at</em>
<a name="9" href="#9">9</a> <em class="jxr_comment"> *</em>
<a name="10" href="#10">10</a> <em class="jxr_comment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a name="11" href="#11">11</a> <em class="jxr_comment"> *</em>
<a name="12" href="#12">12</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing,</em>
<a name="13" href="#13">13</a> <em class="jxr_comment"> * software distributed under the License is distributed on an</em>
<a name="14" href="#14">14</a> <em class="jxr_comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</em>
<a name="15" href="#15">15</a> <em class="jxr_comment"> * KIND, either express or implied. See the License for the</em>
<a name="16" href="#16">16</a> <em class="jxr_comment"> * specific language governing permissions and limitations</em>
<a name="17" href="#17">17</a> <em class="jxr_comment"> * under the License.</em>
<a name="18" href="#18">18</a> <em class="jxr_comment"> */</em>
<a name="19" href="#19">19</a> <strong class="jxr_keyword">package</strong> org.apache.shiro.io;
<a name="20" href="#20">20</a>
<a name="21" href="#21">21</a> <strong class="jxr_keyword">import</strong> java.io.*;
<a name="22" href="#22">22</a>
<a name="23" href="#23">23</a> <em class="jxr_javadoccomment">/**</em>
<a name="24" href="#24">24</a> <em class="jxr_javadoccomment"> * Serializer implementation that uses the default JVM serialization mechanism (Object Input/Output Streams).</em>
<a name="25" href="#25">25</a> <em class="jxr_javadoccomment"> *</em>
<a name="26" href="#26">26</a> <em class="jxr_javadoccomment"> * @since 0.9</em>
<a name="27" href="#27">27</a> <em class="jxr_javadoccomment"> */</em>
<a name="28" href="#28">28</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> DefaultSerializer&lt;T&gt; implements Serializer&lt;T&gt; {
<a name="29" href="#29">29</a>
<a name="30" href="#30">30</a> <em class="jxr_javadoccomment">/**</em>
<a name="31" href="#31">31</a> <em class="jxr_javadoccomment"> * This implementation serializes the Object by using an {@link ObjectOutputStream} backed by a</em>
<a name="32" href="#32">32</a> <em class="jxr_javadoccomment"> * {@link ByteArrayOutputStream}. The {@code ByteArrayOutputStream}'s backing byte array is returned.</em>
<a name="33" href="#33">33</a> <em class="jxr_javadoccomment"> *</em>
<a name="34" href="#34">34</a> <em class="jxr_javadoccomment"> * @param o the Object to convert into a byte[] array.</em>
<a name="35" href="#35">35</a> <em class="jxr_javadoccomment"> * @return the bytes representing the serialized object using standard JVM serialization.</em>
<a name="36" href="#36">36</a> <em class="jxr_javadoccomment"> * @throws SerializationException wrapping a {@link IOException} if something goes wrong with the streams.</em>
<a name="37" href="#37">37</a> <em class="jxr_javadoccomment"> */</em>
<a name="38" href="#38">38</a> <strong class="jxr_keyword">public</strong> byte[] serialize(T o) <strong class="jxr_keyword">throws</strong> SerializationException {
<a name="39" href="#39">39</a> <strong class="jxr_keyword">if</strong> (o == <strong class="jxr_keyword">null</strong>) {
<a name="40" href="#40">40</a> String msg = <span class="jxr_string">"argument cannot be null."</span>;
<a name="41" href="#41">41</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(msg);
<a name="42" href="#42">42</a> }
<a name="43" href="#43">43</a> ByteArrayOutputStream baos = <strong class="jxr_keyword">new</strong> ByteArrayOutputStream();
<a name="44" href="#44">44</a> BufferedOutputStream bos = <strong class="jxr_keyword">new</strong> BufferedOutputStream(baos);
<a name="45" href="#45">45</a>
<a name="46" href="#46">46</a> <strong class="jxr_keyword">try</strong> {
<a name="47" href="#47">47</a> ObjectOutputStream oos = <strong class="jxr_keyword">new</strong> ObjectOutputStream(bos);
<a name="48" href="#48">48</a> oos.writeObject(o);
<a name="49" href="#49">49</a> oos.close();
<a name="50" href="#50">50</a> <strong class="jxr_keyword">return</strong> baos.toByteArray();
<a name="51" href="#51">51</a> } <strong class="jxr_keyword">catch</strong> (IOException e) {
<a name="52" href="#52">52</a> String msg = <span class="jxr_string">"Unable to serialize object ["</span> + o + <span class="jxr_string">"]. "</span> +
<a name="53" href="#53">53</a> <span class="jxr_string">"In order for the DefaultSerializer to serialize this object, the ["</span> + o.getClass().getName() + <span class="jxr_string">"] "</span> +
<a name="54" href="#54">54</a> <span class="jxr_string">"class must implement java.io.Serializable."</span>;
<a name="55" href="#55">55</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/shiro/io/SerializationException.html">SerializationException</a>(msg, e);
<a name="56" href="#56">56</a> }
<a name="57" href="#57">57</a> }
<a name="58" href="#58">58</a>
<a name="59" href="#59">59</a> <em class="jxr_javadoccomment">/**</em>
<a name="60" href="#60">60</a> <em class="jxr_javadoccomment"> * This implementation deserializes the byte array using a {@link ObjectInputStream} using a source</em>
<a name="61" href="#61">61</a> <em class="jxr_javadoccomment"> * {@link ByteArrayInputStream} constructed with the argument byte array.</em>
<a name="62" href="#62">62</a> <em class="jxr_javadoccomment"> *</em>
<a name="63" href="#63">63</a> <em class="jxr_javadoccomment"> * @param serialized the raw data resulting from a previous {@link #serialize(Object) serialize} call.</em>
<a name="64" href="#64">64</a> <em class="jxr_javadoccomment"> * @return the deserialized/reconstituted object based on the given byte array</em>
<a name="65" href="#65">65</a> <em class="jxr_javadoccomment"> * @throws SerializationException if anything goes wrong using the streams.</em>
<a name="66" href="#66">66</a> <em class="jxr_javadoccomment"> */</em>
<a name="67" href="#67">67</a> <strong class="jxr_keyword">public</strong> T deserialize(byte[] serialized) <strong class="jxr_keyword">throws</strong> SerializationException {
<a name="68" href="#68">68</a> <strong class="jxr_keyword">if</strong> (serialized == <strong class="jxr_keyword">null</strong>) {
<a name="69" href="#69">69</a> String msg = <span class="jxr_string">"argument cannot be null."</span>;
<a name="70" href="#70">70</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(msg);
<a name="71" href="#71">71</a> }
<a name="72" href="#72">72</a> ByteArrayInputStream bais = <strong class="jxr_keyword">new</strong> ByteArrayInputStream(serialized);
<a name="73" href="#73">73</a> BufferedInputStream bis = <strong class="jxr_keyword">new</strong> BufferedInputStream(bais);
<a name="74" href="#74">74</a> <strong class="jxr_keyword">try</strong> {
<a name="75" href="#75">75</a> ObjectInputStream ois = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/shiro/io/ClassResolvingObjectInputStream.html">ClassResolvingObjectInputStream</a>(bis);
<a name="76" href="#76">76</a> @SuppressWarnings({<span class="jxr_string">"unchecked"</span>})
<a name="77" href="#77">77</a> T deserialized = (T) ois.readObject();
<a name="78" href="#78">78</a> ois.close();
<a name="79" href="#79">79</a> <strong class="jxr_keyword">return</strong> deserialized;
<a name="80" href="#80">80</a> } <strong class="jxr_keyword">catch</strong> (Exception e) {
<a name="81" href="#81">81</a> String msg = <span class="jxr_string">"Unable to deserialze argument byte array."</span>;
<a name="82" href="#82">82</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/shiro/io/SerializationException.html">SerializationException</a>(msg, e);
<a name="83" href="#83">83</a> }
<a name="84" href="#84">84</a> }
<a name="85" href="#85">85</a> }
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