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| <div id="overview"><a href="../../../../../../../apidocs/org/apache/shiro/session/mgt/eis/CachingSessionDAO.html">View Javadoc</a></div><pre> |
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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.session.mgt.eis; |
| <a name="20" href="#20">20</a> |
| <a name="21" href="#21">21</a> <strong class="jxr_keyword">import</strong> org.apache.shiro.cache.Cache; |
| <a name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> org.apache.shiro.cache.CacheManager; |
| <a name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> org.apache.shiro.cache.CacheManagerAware; |
| <a name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> org.apache.shiro.session.Session; |
| <a name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> org.apache.shiro.session.UnknownSessionException; |
| <a name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> org.apache.shiro.session.mgt.ValidatingSession; |
| <a name="27" href="#27">27</a> |
| <a name="28" href="#28">28</a> <strong class="jxr_keyword">import</strong> java.io.Serializable; |
| <a name="29" href="#29">29</a> <strong class="jxr_keyword">import</strong> java.util.Collection; |
| <a name="30" href="#30">30</a> <strong class="jxr_keyword">import</strong> java.util.Collections; |
| <a name="31" href="#31">31</a> |
| <a name="32" href="#32">32</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="33" href="#33">33</a> <em class="jxr_javadoccomment"> * An CachingSessionDAO is a SessionDAO that provides a transparent caching layer between the components that</em> |
| <a name="34" href="#34">34</a> <em class="jxr_javadoccomment"> * use it and the underlying EIS (Enterprise Information System) session backing store (for example, filesystem,</em> |
| <a name="35" href="#35">35</a> <em class="jxr_javadoccomment"> * database, enterprise grid/cloud, etc).</em> |
| <a name="36" href="#36">36</a> <em class="jxr_javadoccomment"> * <p/></em> |
| <a name="37" href="#37">37</a> <em class="jxr_javadoccomment"> * This implementation caches all active sessions in a configured</em> |
| <a name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * {@link #getActiveSessionsCache() activeSessionsCache}. This property is {@code null} by default and if one is</em> |
| <a name="39" href="#39">39</a> <em class="jxr_javadoccomment"> * not explicitly set, a {@link #setCacheManager cacheManager} is expected to be configured which will in turn be used</em> |
| <a name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * to acquire the {@code Cache} instance to use for the {@code activeSessionsCache}.</em> |
| <a name="41" href="#41">41</a> <em class="jxr_javadoccomment"> * <p/></em> |
| <a name="42" href="#42">42</a> <em class="jxr_javadoccomment"> * All {@code SessionDAO} methods are implemented by this class to employ</em> |
| <a name="43" href="#43">43</a> <em class="jxr_javadoccomment"> * caching behavior and delegates the actual EIS operations to respective do* methods to be implemented by</em> |
| <a name="44" href="#44">44</a> <em class="jxr_javadoccomment"> * subclasses (doCreate, doRead, etc).</em> |
| <a name="45" href="#45">45</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="46" href="#46">46</a> <em class="jxr_javadoccomment"> * @since 0.2</em> |
| <a name="47" href="#47">47</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="48" href="#48">48</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/shiro/session/mgt/eis/CachingSessionDAO.html">CachingSessionDAO</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../../org/apache/shiro/session/mgt/eis/AbstractSessionDAO.html">AbstractSessionDAO</a> implements <a href="../../../../../../org/apache/shiro/cache/CacheManagerAware.html">CacheManagerAware</a> { |
| <a name="49" href="#49">49</a> |
| <a name="50" href="#50">50</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="51" href="#51">51</a> <em class="jxr_javadoccomment"> * The default active sessions cache name, equal to {@code shiro-activeSessionCache}.</em> |
| <a name="52" href="#52">52</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="53" href="#53">53</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String ACTIVE_SESSION_CACHE_NAME = <span class="jxr_string">"shiro-activeSessionCache"</span>; |
| <a name="54" href="#54">54</a> |
| <a name="55" href="#55">55</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="56" href="#56">56</a> <em class="jxr_javadoccomment"> * The CacheManager to use to acquire the Session cache.</em> |
| <a name="57" href="#57">57</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="58" href="#58">58</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../../org/apache/shiro/cache/CacheManager.html">CacheManager</a> cacheManager; |
| <a name="59" href="#59">59</a> |
| <a name="60" href="#60">60</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="61" href="#61">61</a> <em class="jxr_javadoccomment"> * The Cache instance responsible for caching Sessions.</em> |
| <a name="62" href="#62">62</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="63" href="#63">63</a> <strong class="jxr_keyword">private</strong> Cache<Serializable, Session> activeSessions; |
| <a name="64" href="#64">64</a> |
| <a name="65" href="#65">65</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="66" href="#66">66</a> <em class="jxr_javadoccomment"> * The name of the session cache, defaults to {@link #ACTIVE_SESSION_CACHE_NAME}.</em> |
| <a name="67" href="#67">67</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="68" href="#68">68</a> <strong class="jxr_keyword">private</strong> String activeSessionsCacheName = ACTIVE_SESSION_CACHE_NAME; |
| <a name="69" href="#69">69</a> |
| <a name="70" href="#70">70</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="71" href="#71">71</a> <em class="jxr_javadoccomment"> * Default no-arg constructor.</em> |
| <a name="72" href="#72">72</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="73" href="#73">73</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/apache/shiro/session/mgt/eis/CachingSessionDAO.html">CachingSessionDAO</a>() { |
| <a name="74" href="#74">74</a> } |
| <a name="75" href="#75">75</a> |
| <a name="76" href="#76">76</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="77" href="#77">77</a> <em class="jxr_javadoccomment"> * Sets the cacheManager to use for acquiring the {@link #getActiveSessionsCache() activeSessionsCache} if</em> |
| <a name="78" href="#78">78</a> <em class="jxr_javadoccomment"> * one is not configured.</em> |
| <a name="79" href="#79">79</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="80" href="#80">80</a> <em class="jxr_javadoccomment"> * @param cacheManager the manager to use for constructing the session cache.</em> |
| <a name="81" href="#81">81</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="82" href="#82">82</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setCacheManager(<a href="../../../../../../org/apache/shiro/cache/CacheManager.html">CacheManager</a> cacheManager) { |
| <a name="83" href="#83">83</a> <strong class="jxr_keyword">this</strong>.cacheManager = cacheManager; |
| <a name="84" href="#84">84</a> } |
| <a name="85" href="#85">85</a> |
| <a name="86" href="#86">86</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="87" href="#87">87</a> <em class="jxr_javadoccomment"> * Returns the CacheManager to use for acquiring the {@link #getActiveSessionsCache() activeSessionsCache} if</em> |
| <a name="88" href="#88">88</a> <em class="jxr_javadoccomment"> * one is not configured. That is, the {@code CacheManager} will only be used if the</em> |
| <a name="89" href="#89">89</a> <em class="jxr_javadoccomment"> * {@link #getActiveSessionsCache() activeSessionsCache} property is {@code null}.</em> |
| <a name="90" href="#90">90</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="91" href="#91">91</a> <em class="jxr_javadoccomment"> * @return the CacheManager used by the implementation that creates the activeSessions Cache.</em> |
| <a name="92" href="#92">92</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="93" href="#93">93</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/apache/shiro/cache/CacheManager.html">CacheManager</a> getCacheManager() { |
| <a name="94" href="#94">94</a> <strong class="jxr_keyword">return</strong> cacheManager; |
| <a name="95" href="#95">95</a> } |
| <a name="96" href="#96">96</a> |
| <a name="97" href="#97">97</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="98" href="#98">98</a> <em class="jxr_javadoccomment"> * Returns the name of the actives sessions cache to be returned by the {@code CacheManager}. Unless</em> |
| <a name="99" href="#99">99</a> <em class="jxr_javadoccomment"> * overridden by {@link #setActiveSessionsCacheName(String)}, defaults to {@link #ACTIVE_SESSION_CACHE_NAME}.</em> |
| <a name="100" href="#100">100</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="101" href="#101">101</a> <em class="jxr_javadoccomment"> * @return the name of the active sessions cache.</em> |
| <a name="102" href="#102">102</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="103" href="#103">103</a> <strong class="jxr_keyword">public</strong> String getActiveSessionsCacheName() { |
| <a name="104" href="#104">104</a> <strong class="jxr_keyword">return</strong> activeSessionsCacheName; |
| <a name="105" href="#105">105</a> } |
| <a name="106" href="#106">106</a> |
| <a name="107" href="#107">107</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="108" href="#108">108</a> <em class="jxr_javadoccomment"> * Sets the name of the active sessions cache to be returned by the {@code CacheManager}. Defaults to</em> |
| <a name="109" href="#109">109</a> <em class="jxr_javadoccomment"> * {@link #ACTIVE_SESSION_CACHE_NAME}.</em> |
| <a name="110" href="#110">110</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="111" href="#111">111</a> <em class="jxr_javadoccomment"> * @param activeSessionsCacheName the name of the active sessions cache to be returned by the {@code CacheManager}.</em> |
| <a name="112" href="#112">112</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="113" href="#113">113</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setActiveSessionsCacheName(String activeSessionsCacheName) { |
| <a name="114" href="#114">114</a> <strong class="jxr_keyword">this</strong>.activeSessionsCacheName = activeSessionsCacheName; |
| <a name="115" href="#115">115</a> } |
| <a name="116" href="#116">116</a> |
| <a name="117" href="#117">117</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="118" href="#118">118</a> <em class="jxr_javadoccomment"> * Returns the cache instance to use for storing active sessions. If one is not available (it is {@code null}),</em> |
| <a name="119" href="#119">119</a> <em class="jxr_javadoccomment"> * it will be {@link CacheManager#getCache(String) acquired} from the {@link #setCacheManager configured}</em> |
| <a name="120" href="#120">120</a> <em class="jxr_javadoccomment"> * {@code CacheManager} using the {@link #getActiveSessionsCacheName() activeSessionsCacheName}.</em> |
| <a name="121" href="#121">121</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="122" href="#122">122</a> <em class="jxr_javadoccomment"> * @return the cache instance to use for storing active sessions or {@code null} if the {@code Cache} instance</em> |
| <a name="123" href="#123">123</a> <em class="jxr_javadoccomment"> * should be retrieved from the</em> |
| <a name="124" href="#124">124</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="125" href="#125">125</a> <strong class="jxr_keyword">public</strong> Cache<Serializable, Session> getActiveSessionsCache() { |
| <a name="126" href="#126">126</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.activeSessions; |
| <a name="127" href="#127">127</a> } |
| <a name="128" href="#128">128</a> |
| <a name="129" href="#129">129</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="130" href="#130">130</a> <em class="jxr_javadoccomment"> * Sets the cache instance to use for storing active sessions. If one is not set (it remains {@code null}),</em> |
| <a name="131" href="#131">131</a> <em class="jxr_javadoccomment"> * it will be {@link CacheManager#getCache(String) acquired} from the {@link #setCacheManager configured}</em> |
| <a name="132" href="#132">132</a> <em class="jxr_javadoccomment"> * {@code CacheManager} using the {@link #getActiveSessionsCacheName() activeSessionsCacheName}.</em> |
| <a name="133" href="#133">133</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="134" href="#134">134</a> <em class="jxr_javadoccomment"> * @param cache the cache instance to use for storing active sessions or {@code null} if the cache is to be</em> |
| <a name="135" href="#135">135</a> <em class="jxr_javadoccomment"> * acquired from the {@link #setCacheManager configured} {@code CacheManager}.</em> |
| <a name="136" href="#136">136</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="137" href="#137">137</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setActiveSessionsCache(Cache<Serializable, Session> cache) { |
| <a name="138" href="#138">138</a> <strong class="jxr_keyword">this</strong>.activeSessions = cache; |
| <a name="139" href="#139">139</a> } |
| <a name="140" href="#140">140</a> |
| <a name="141" href="#141">141</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="142" href="#142">142</a> <em class="jxr_javadoccomment"> * Returns the active sessions cache, but if that cache instance is null, first lazily creates the cache instance</em> |
| <a name="143" href="#143">143</a> <em class="jxr_javadoccomment"> * via the {@link #createActiveSessionsCache()} method and then returns the instance.</em> |
| <a name="144" href="#144">144</a> <em class="jxr_javadoccomment"> * <p/></em> |
| <a name="145" href="#145">145</a> <em class="jxr_javadoccomment"> * Note that this method will only return a non-null value code if the {@code CacheManager} has been set. If</em> |
| <a name="146" href="#146">146</a> <em class="jxr_javadoccomment"> * not set, there will be no cache.</em> |
| <a name="147" href="#147">147</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="148" href="#148">148</a> <em class="jxr_javadoccomment"> * @return the active sessions cache instance.</em> |
| <a name="149" href="#149">149</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="150" href="#150">150</a> <strong class="jxr_keyword">private</strong> Cache<Serializable, Session> getActiveSessionsCacheLazy() { |
| <a name="151" href="#151">151</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.activeSessions == <strong class="jxr_keyword">null</strong>) { |
| <a name="152" href="#152">152</a> <strong class="jxr_keyword">this</strong>.activeSessions = createActiveSessionsCache(); |
| <a name="153" href="#153">153</a> } |
| <a name="154" href="#154">154</a> <strong class="jxr_keyword">return</strong> activeSessions; |
| <a name="155" href="#155">155</a> } |
| <a name="156" href="#156">156</a> |
| <a name="157" href="#157">157</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="158" href="#158">158</a> <em class="jxr_javadoccomment"> * Creates a cache instance used to store active sessions. Creation is done by first</em> |
| <a name="159" href="#159">159</a> <em class="jxr_javadoccomment"> * {@link #getCacheManager() acquiring} the {@code CacheManager}. If the cache manager is not null, the</em> |
| <a name="160" href="#160">160</a> <em class="jxr_javadoccomment"> * cache returned is that resulting from the following call:</em> |
| <a name="161" href="#161">161</a> <em class="jxr_javadoccomment"> * <pre> String name = {@link #getActiveSessionsCacheName() getActiveSessionsCacheName()};</em> |
| <a name="162" href="#162">162</a> <em class="jxr_javadoccomment"> * cacheManager.getCache(name);</pre></em> |
| <a name="163" href="#163">163</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="164" href="#164">164</a> <em class="jxr_javadoccomment"> * @return a cache instance used to store active sessions, or {@code null} if the {@code CacheManager} has</em> |
| <a name="165" href="#165">165</a> <em class="jxr_javadoccomment"> * not been set.</em> |
| <a name="166" href="#166">166</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="167" href="#167">167</a> <strong class="jxr_keyword">protected</strong> Cache<Serializable, Session> createActiveSessionsCache() { |
| <a name="168" href="#168">168</a> Cache<Serializable, Session> cache = <strong class="jxr_keyword">null</strong>; |
| <a name="169" href="#169">169</a> <a href="../../../../../../org/apache/shiro/cache/CacheManager.html">CacheManager</a> mgr = getCacheManager(); |
| <a name="170" href="#170">170</a> <strong class="jxr_keyword">if</strong> (mgr != <strong class="jxr_keyword">null</strong>) { |
| <a name="171" href="#171">171</a> String name = getActiveSessionsCacheName(); |
| <a name="172" href="#172">172</a> cache = mgr.getCache(name); |
| <a name="173" href="#173">173</a> } |
| <a name="174" href="#174">174</a> <strong class="jxr_keyword">return</strong> cache; |
| <a name="175" href="#175">175</a> } |
| <a name="176" href="#176">176</a> |
| <a name="177" href="#177">177</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="178" href="#178">178</a> <em class="jxr_javadoccomment"> * Calls {@code super.create(session)}, then caches the session keyed by the returned {@code sessionId}, and then</em> |
| <a name="179" href="#179">179</a> <em class="jxr_javadoccomment"> * returns this {@code sessionId}.</em> |
| <a name="180" href="#180">180</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="181" href="#181">181</a> <em class="jxr_javadoccomment"> * @param session Session object to create in the EIS and then cache.</em> |
| <a name="182" href="#182">182</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="183" href="#183">183</a> <strong class="jxr_keyword">public</strong> Serializable create(<a href="../../../../../../org/apache/shiro/session/Session.html">Session</a> session) { |
| <a name="184" href="#184">184</a> Serializable sessionId = <strong class="jxr_keyword">super</strong>.create(session); |
| <a name="185" href="#185">185</a> cache(session, sessionId); |
| <a name="186" href="#186">186</a> <strong class="jxr_keyword">return</strong> sessionId; |
| <a name="187" href="#187">187</a> } |
| <a name="188" href="#188">188</a> |
| <a name="189" href="#189">189</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="190" href="#190">190</a> <em class="jxr_javadoccomment"> * Returns the cached session with the corresponding {@code sessionId} or {@code null} if there is</em> |
| <a name="191" href="#191">191</a> <em class="jxr_javadoccomment"> * no session cached under that id (or if there is no Cache).</em> |
| <a name="192" href="#192">192</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="193" href="#193">193</a> <em class="jxr_javadoccomment"> * @param sessionId the id of the cached session to acquire.</em> |
| <a name="194" href="#194">194</a> <em class="jxr_javadoccomment"> * @return the cached session with the corresponding {@code sessionId}, or {@code null} if the session</em> |
| <a name="195" href="#195">195</a> <em class="jxr_javadoccomment"> * does not exist or is not cached.</em> |
| <a name="196" href="#196">196</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="197" href="#197">197</a> <strong class="jxr_keyword">protected</strong> <a href="../../../../../../org/apache/shiro/session/Session.html">Session</a> getCachedSession(Serializable sessionId) { |
| <a name="198" href="#198">198</a> <a href="../../../../../../org/apache/shiro/session/Session.html">Session</a> cached = <strong class="jxr_keyword">null</strong>; |
| <a name="199" href="#199">199</a> <strong class="jxr_keyword">if</strong> (sessionId != <strong class="jxr_keyword">null</strong>) { |
| <a name="200" href="#200">200</a> Cache<Serializable, Session> cache = getActiveSessionsCacheLazy(); |
| <a name="201" href="#201">201</a> <strong class="jxr_keyword">if</strong> (cache != <strong class="jxr_keyword">null</strong>) { |
| <a name="202" href="#202">202</a> cached = getCachedSession(sessionId, cache); |
| <a name="203" href="#203">203</a> } |
| <a name="204" href="#204">204</a> } |
| <a name="205" href="#205">205</a> <strong class="jxr_keyword">return</strong> cached; |
| <a name="206" href="#206">206</a> } |
| <a name="207" href="#207">207</a> |
| <a name="208" href="#208">208</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="209" href="#209">209</a> <em class="jxr_javadoccomment"> * Returns the Session with the specified id from the specified cache. This method simply calls</em> |
| <a name="210" href="#210">210</a> <em class="jxr_javadoccomment"> * {@code cache.get(sessionId)} and can be overridden by subclasses for custom acquisition behavior.</em> |
| <a name="211" href="#211">211</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="212" href="#212">212</a> <em class="jxr_javadoccomment"> * @param sessionId the id of the session to acquire.</em> |
| <a name="213" href="#213">213</a> <em class="jxr_javadoccomment"> * @param cache the cache to acquire the session from</em> |
| <a name="214" href="#214">214</a> <em class="jxr_javadoccomment"> * @return the cached session, or {@code null} if the session wasn't in the cache.</em> |
| <a name="215" href="#215">215</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="216" href="#216">216</a> <strong class="jxr_keyword">protected</strong> <a href="../../../../../../org/apache/shiro/session/Session.html">Session</a> getCachedSession(Serializable sessionId, Cache<Serializable, Session> cache) { |
| <a name="217" href="#217">217</a> <strong class="jxr_keyword">return</strong> cache.get(sessionId); |
| <a name="218" href="#218">218</a> } |
| <a name="219" href="#219">219</a> |
| <a name="220" href="#220">220</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="221" href="#221">221</a> <em class="jxr_javadoccomment"> * Caches the specified session under the cache entry key of {@code sessionId}.</em> |
| <a name="222" href="#222">222</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="223" href="#223">223</a> <em class="jxr_javadoccomment"> * @param session the session to cache</em> |
| <a name="224" href="#224">224</a> <em class="jxr_javadoccomment"> * @param sessionId the session id, to be used as the cache entry key.</em> |
| <a name="225" href="#225">225</a> <em class="jxr_javadoccomment"> * @since 1.0</em> |
| <a name="226" href="#226">226</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="227" href="#227">227</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> cache(<a href="../../../../../../org/apache/shiro/session/Session.html">Session</a> session, Serializable sessionId) { |
| <a name="228" href="#228">228</a> <strong class="jxr_keyword">if</strong> (session == <strong class="jxr_keyword">null</strong> || sessionId == <strong class="jxr_keyword">null</strong>) { |
| <a name="229" href="#229">229</a> <strong class="jxr_keyword">return</strong>; |
| <a name="230" href="#230">230</a> } |
| <a name="231" href="#231">231</a> Cache<Serializable, Session> cache = getActiveSessionsCacheLazy(); |
| <a name="232" href="#232">232</a> <strong class="jxr_keyword">if</strong> (cache == <strong class="jxr_keyword">null</strong>) { |
| <a name="233" href="#233">233</a> <strong class="jxr_keyword">return</strong>; |
| <a name="234" href="#234">234</a> } |
| <a name="235" href="#235">235</a> cache(session, sessionId, cache); |
| <a name="236" href="#236">236</a> } |
| <a name="237" href="#237">237</a> |
| <a name="238" href="#238">238</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="239" href="#239">239</a> <em class="jxr_javadoccomment"> * Caches the specified session in the given cache under the key of {@code sessionId}. This implementation</em> |
| <a name="240" href="#240">240</a> <em class="jxr_javadoccomment"> * simply calls {@code cache.put(sessionId,session)} and can be overridden for custom behavior.</em> |
| <a name="241" href="#241">241</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="242" href="#242">242</a> <em class="jxr_javadoccomment"> * @param session the session to cache</em> |
| <a name="243" href="#243">243</a> <em class="jxr_javadoccomment"> * @param sessionId the id of the session, expected to be the cache key.</em> |
| <a name="244" href="#244">244</a> <em class="jxr_javadoccomment"> * @param cache the cache to store the session</em> |
| <a name="245" href="#245">245</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="246" href="#246">246</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> cache(<a href="../../../../../../org/apache/shiro/session/Session.html">Session</a> session, Serializable sessionId, Cache<Serializable, Session> cache) { |
| <a name="247" href="#247">247</a> cache.put(sessionId, session); |
| <a name="248" href="#248">248</a> } |
| <a name="249" href="#249">249</a> |
| <a name="250" href="#250">250</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="251" href="#251">251</a> <em class="jxr_javadoccomment"> * Attempts to acquire the Session from the cache first using the session ID as the cache key. If no session</em> |
| <a name="252" href="#252">252</a> <em class="jxr_javadoccomment"> * is found, {@code super.readSession(sessionId)} is called to perform the actual retrieval.</em> |
| <a name="253" href="#253">253</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="254" href="#254">254</a> <em class="jxr_javadoccomment"> * @param sessionId the id of the session to retrieve from the EIS.</em> |
| <a name="255" href="#255">255</a> <em class="jxr_javadoccomment"> * @return the session identified by {@code sessionId} in the EIS.</em> |
| <a name="256" href="#256">256</a> <em class="jxr_javadoccomment"> * @throws UnknownSessionException if the id specified does not correspond to any session in the cache or EIS.</em> |
| <a name="257" href="#257">257</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="258" href="#258">258</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/apache/shiro/session/Session.html">Session</a> readSession(Serializable sessionId) <strong class="jxr_keyword">throws</strong> UnknownSessionException { |
| <a name="259" href="#259">259</a> <a href="../../../../../../org/apache/shiro/session/Session.html">Session</a> s = getCachedSession(sessionId); |
| <a name="260" href="#260">260</a> <strong class="jxr_keyword">if</strong> (s == <strong class="jxr_keyword">null</strong>) { |
| <a name="261" href="#261">261</a> s = <strong class="jxr_keyword">super</strong>.readSession(sessionId); |
| <a name="262" href="#262">262</a> } |
| <a name="263" href="#263">263</a> <strong class="jxr_keyword">return</strong> s; |
| <a name="264" href="#264">264</a> } |
| <a name="265" href="#265">265</a> |
| <a name="266" href="#266">266</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="267" href="#267">267</a> <em class="jxr_javadoccomment"> * Updates the state of the given session to the EIS by first delegating to</em> |
| <a name="268" href="#268">268</a> <em class="jxr_javadoccomment"> * {@link #doUpdate(org.apache.shiro.session.Session)}. If the session is a {@link ValidatingSession}, it will</em> |
| <a name="269" href="#269">269</a> <em class="jxr_javadoccomment"> * be added to the cache only if it is {@link ValidatingSession#isValid()} and if invalid, will be removed from the</em> |
| <a name="270" href="#270">270</a> <em class="jxr_javadoccomment"> * cache. If it is not a {@code ValidatingSession} instance, it will be added to the cache in any event.</em> |
| <a name="271" href="#271">271</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="272" href="#272">272</a> <em class="jxr_javadoccomment"> * @param session the session object to update in the EIS.</em> |
| <a name="273" href="#273">273</a> <em class="jxr_javadoccomment"> * @throws UnknownSessionException if no existing EIS session record exists with the</em> |
| <a name="274" href="#274">274</a> <em class="jxr_javadoccomment"> * identifier of {@link Session#getId() session.getId()}</em> |
| <a name="275" href="#275">275</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="276" href="#276">276</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> update(<a href="../../../../../../org/apache/shiro/session/Session.html">Session</a> session) <strong class="jxr_keyword">throws</strong> UnknownSessionException { |
| <a name="277" href="#277">277</a> doUpdate(session); |
| <a name="278" href="#278">278</a> <strong class="jxr_keyword">if</strong> (session instanceof ValidatingSession) { |
| <a name="279" href="#279">279</a> <strong class="jxr_keyword">if</strong> (((ValidatingSession) session).isValid()) { |
| <a name="280" href="#280">280</a> cache(session, session.getId()); |
| <a name="281" href="#281">281</a> } <strong class="jxr_keyword">else</strong> { |
| <a name="282" href="#282">282</a> uncache(session); |
| <a name="283" href="#283">283</a> } |
| <a name="284" href="#284">284</a> } <strong class="jxr_keyword">else</strong> { |
| <a name="285" href="#285">285</a> cache(session, session.getId()); |
| <a name="286" href="#286">286</a> } |
| <a name="287" href="#287">287</a> } |
| <a name="288" href="#288">288</a> |
| <a name="289" href="#289">289</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="290" href="#290">290</a> <em class="jxr_javadoccomment"> * Subclass implementation hook to actually persist the {@code Session}'s state to the underlying EIS.</em> |
| <a name="291" href="#291">291</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="292" href="#292">292</a> <em class="jxr_javadoccomment"> * @param session the session object whose state will be propagated to the EIS.</em> |
| <a name="293" href="#293">293</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="294" href="#294">294</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">void</strong> doUpdate(<a href="../../../../../../org/apache/shiro/session/Session.html">Session</a> session); |
| <a name="295" href="#295">295</a> |
| <a name="296" href="#296">296</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="297" href="#297">297</a> <em class="jxr_javadoccomment"> * Removes the specified session from any cache and then permanently deletes the session from the EIS by</em> |
| <a name="298" href="#298">298</a> <em class="jxr_javadoccomment"> * delegating to {@link #doDelete}.</em> |
| <a name="299" href="#299">299</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="300" href="#300">300</a> <em class="jxr_javadoccomment"> * @param session the session to remove from caches and permanently delete from the EIS.</em> |
| <a name="301" href="#301">301</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="302" href="#302">302</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> delete(<a href="../../../../../../org/apache/shiro/session/Session.html">Session</a> session) { |
| <a name="303" href="#303">303</a> uncache(session); |
| <a name="304" href="#304">304</a> doDelete(session); |
| <a name="305" href="#305">305</a> } |
| <a name="306" href="#306">306</a> |
| <a name="307" href="#307">307</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="308" href="#308">308</a> <em class="jxr_javadoccomment"> * Subclass implementation hook to permanently delete the given Session from the underlying EIS.</em> |
| <a name="309" href="#309">309</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="310" href="#310">310</a> <em class="jxr_javadoccomment"> * @param session the session instance to permanently delete from the EIS.</em> |
| <a name="311" href="#311">311</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="312" href="#312">312</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">void</strong> doDelete(<a href="../../../../../../org/apache/shiro/session/Session.html">Session</a> session); |
| <a name="313" href="#313">313</a> |
| <a name="314" href="#314">314</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="315" href="#315">315</a> <em class="jxr_javadoccomment"> * Removes the specified Session from the cache.</em> |
| <a name="316" href="#316">316</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="317" href="#317">317</a> <em class="jxr_javadoccomment"> * @param session the session to remove from the cache.</em> |
| <a name="318" href="#318">318</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="319" href="#319">319</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> uncache(<a href="../../../../../../org/apache/shiro/session/Session.html">Session</a> session) { |
| <a name="320" href="#320">320</a> <strong class="jxr_keyword">if</strong> (session == <strong class="jxr_keyword">null</strong>) { |
| <a name="321" href="#321">321</a> <strong class="jxr_keyword">return</strong>; |
| <a name="322" href="#322">322</a> } |
| <a name="323" href="#323">323</a> Serializable id = session.getId(); |
| <a name="324" href="#324">324</a> <strong class="jxr_keyword">if</strong> (id == <strong class="jxr_keyword">null</strong>) { |
| <a name="325" href="#325">325</a> <strong class="jxr_keyword">return</strong>; |
| <a name="326" href="#326">326</a> } |
| <a name="327" href="#327">327</a> Cache<Serializable, Session> cache = getActiveSessionsCacheLazy(); |
| <a name="328" href="#328">328</a> <strong class="jxr_keyword">if</strong> (cache != <strong class="jxr_keyword">null</strong>) { |
| <a name="329" href="#329">329</a> cache.remove(id); |
| <a name="330" href="#330">330</a> } |
| <a name="331" href="#331">331</a> } |
| <a name="332" href="#332">332</a> |
| <a name="333" href="#333">333</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="334" href="#334">334</a> <em class="jxr_javadoccomment"> * Returns all active sessions in the system.</em> |
| <a name="335" href="#335">335</a> <em class="jxr_javadoccomment"> * <p/></em> |
| <a name="336" href="#336">336</a> <em class="jxr_javadoccomment"> * <p>This implementation merely returns the sessions found in the activeSessions cache. Subclass implementations</em> |
| <a name="337" href="#337">337</a> <em class="jxr_javadoccomment"> * may wish to override this method to retrieve them in a different way, perhaps by an RDBMS query or by other</em> |
| <a name="338" href="#338">338</a> <em class="jxr_javadoccomment"> * means.</em> |
| <a name="339" href="#339">339</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="340" href="#340">340</a> <em class="jxr_javadoccomment"> * @return the sessions found in the activeSessions cache.</em> |
| <a name="341" href="#341">341</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="342" href="#342">342</a> <strong class="jxr_keyword">public</strong> Collection<Session> getActiveSessions() { |
| <a name="343" href="#343">343</a> Cache<Serializable, Session> cache = getActiveSessionsCacheLazy(); |
| <a name="344" href="#344">344</a> <strong class="jxr_keyword">if</strong> (cache != <strong class="jxr_keyword">null</strong>) { |
| <a name="345" href="#345">345</a> <strong class="jxr_keyword">return</strong> cache.values(); |
| <a name="346" href="#346">346</a> } <strong class="jxr_keyword">else</strong> { |
| <a name="347" href="#347">347</a> <strong class="jxr_keyword">return</strong> Collections.emptySet(); |
| <a name="348" href="#348">348</a> } |
| <a name="349" href="#349">349</a> } |
| <a name="350" href="#350">350</a> } |
| </pre> |
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