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| <div id="overview"><a href="../../../../../../apidocs/org/apache/mina/integration/ognl/IoSessionFinder.html">View Javadoc</a></div><pre> |
| <a class="jxr_linenumber" name="L1" href="#L1">1</a> <em class="jxr_comment">/*</em> |
| <a class="jxr_linenumber" name="L2" href="#L2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em> |
| <a class="jxr_linenumber" name="L3" href="#L3">3</a> <em class="jxr_comment"> * contributor license agreements. See the NOTICE file distributed with</em> |
| <a class="jxr_linenumber" name="L4" href="#L4">4</a> <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em> |
| <a class="jxr_linenumber" name="L5" href="#L5">5</a> <em class="jxr_comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</em> |
| <a class="jxr_linenumber" name="L6" href="#L6">6</a> <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with</em> |
| <a class="jxr_linenumber" name="L7" href="#L7">7</a> <em class="jxr_comment"> * the License. You may obtain a copy of the License at</em> |
| <a class="jxr_linenumber" name="L8" href="#L8">8</a> <em class="jxr_comment"> * </em> |
| <a class="jxr_linenumber" name="L9" href="#L9">9</a> <em class="jxr_comment"> * <a href="http://www.apache.org/licenses/LICENSE-2." target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.</a>0</em> |
| <a class="jxr_linenumber" name="L10" href="#L10">10</a> <em class="jxr_comment"> * </em> |
| <a class="jxr_linenumber" name="L11" href="#L11">11</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em> |
| <a class="jxr_linenumber" name="L12" href="#L12">12</a> <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em> |
| <a class="jxr_linenumber" name="L13" href="#L13">13</a> <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em> |
| <a class="jxr_linenumber" name="L14" href="#L14">14</a> <em class="jxr_comment"> * See the License for the specific language governing permissions and</em> |
| <a class="jxr_linenumber" name="L15" href="#L15">15</a> <em class="jxr_comment"> * limitations under the License.</em> |
| <a class="jxr_linenumber" name="L16" href="#L16">16</a> <em class="jxr_comment"> */</em> |
| <a class="jxr_linenumber" name="L17" href="#L17">17</a> <strong class="jxr_keyword">package</strong> org.apache.mina.integration.ognl; |
| <a class="jxr_linenumber" name="L18" href="#L18">18</a> |
| <a class="jxr_linenumber" name="L19" href="#L19">19</a> <strong class="jxr_keyword">import</strong> java.util.LinkedHashSet; |
| <a class="jxr_linenumber" name="L20" href="#L20">20</a> <strong class="jxr_keyword">import</strong> java.util.Set; |
| <a class="jxr_linenumber" name="L21" href="#L21">21</a> |
| <a class="jxr_linenumber" name="L22" href="#L22">22</a> <strong class="jxr_keyword">import</strong> ognl.Ognl; |
| <a class="jxr_linenumber" name="L23" href="#L23">23</a> <strong class="jxr_keyword">import</strong> ognl.OgnlContext; |
| <a class="jxr_linenumber" name="L24" href="#L24">24</a> <strong class="jxr_keyword">import</strong> ognl.OgnlException; |
| <a class="jxr_linenumber" name="L25" href="#L25">25</a> <strong class="jxr_keyword">import</strong> ognl.TypeConverter; |
| <a class="jxr_linenumber" name="L26" href="#L26">26</a> |
| <a class="jxr_linenumber" name="L27" href="#L27">27</a> <strong class="jxr_keyword">import</strong> org.apache.mina.core.session.IoSession; |
| <a class="jxr_linenumber" name="L28" href="#L28">28</a> |
| <a class="jxr_linenumber" name="L29" href="#L29">29</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L30" href="#L30">30</a> <em class="jxr_javadoccomment"> * Finds {@link IoSession}s that match a boolean OGNL expression.</em> |
| <a class="jxr_linenumber" name="L31" href="#L31">31</a> <em class="jxr_javadoccomment"> * </em> |
| <a class="jxr_linenumber" name="L32" href="#L32">32</a> <em class="jxr_javadoccomment"> * @author <a href="<a href="http://mina.apache.org" target="alexandria_uri">http://mina.apache.org</a>">Apache MINA Project</a></em> |
| <a class="jxr_linenumber" name="L33" href="#L33">33</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L34" href="#L34">34</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/mina/integration/ognl/IoSessionFinder.html">IoSessionFinder</a> { |
| <a class="jxr_linenumber" name="L35" href="#L35">35</a> |
| <a class="jxr_linenumber" name="L36" href="#L36">36</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> String query; |
| <a class="jxr_linenumber" name="L37" href="#L37">37</a> |
| <a class="jxr_linenumber" name="L38" href="#L38">38</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> TypeConverter typeConverter = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/mina/integration/ognl/PropertyTypeConverter.html">PropertyTypeConverter</a>(); |
| <a class="jxr_linenumber" name="L39" href="#L39">39</a> |
| <a class="jxr_linenumber" name="L40" href="#L40">40</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Object expression; |
| <a class="jxr_linenumber" name="L41" href="#L41">41</a> |
| <a class="jxr_linenumber" name="L42" href="#L42">42</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L43" href="#L43">43</a> <em class="jxr_javadoccomment"> * Creates a new instance with the specified OGNL expression that returns</em> |
| <a class="jxr_linenumber" name="L44" href="#L44">44</a> <em class="jxr_javadoccomment"> * a boolean value (e.g. <tt>"id == 0x12345678"</tt>).</em> |
| <a class="jxr_linenumber" name="L45" href="#L45">45</a> <em class="jxr_javadoccomment"> * </em> |
| <a class="jxr_linenumber" name="L46" href="#L46">46</a> <em class="jxr_javadoccomment"> * @param query The OGNL expression </em> |
| <a class="jxr_linenumber" name="L47" href="#L47">47</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L48" href="#L48">48</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/mina/integration/ognl/IoSessionFinder.html">IoSessionFinder</a>(String query) { |
| <a class="jxr_linenumber" name="L49" href="#L49">49</a> <strong class="jxr_keyword">if</strong> (query == <strong class="jxr_keyword">null</strong>) { |
| <a class="jxr_linenumber" name="L50" href="#L50">50</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"query"</span>); |
| <a class="jxr_linenumber" name="L51" href="#L51">51</a> } |
| <a class="jxr_linenumber" name="L52" href="#L52">52</a> |
| <a class="jxr_linenumber" name="L53" href="#L53">53</a> query = query.trim(); |
| <a class="jxr_linenumber" name="L54" href="#L54">54</a> |
| <a class="jxr_linenumber" name="L55" href="#L55">55</a> <strong class="jxr_keyword">if</strong> (query.length() == 0) { |
| <a class="jxr_linenumber" name="L56" href="#L56">56</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"query is empty."</span>); |
| <a class="jxr_linenumber" name="L57" href="#L57">57</a> } |
| <a class="jxr_linenumber" name="L58" href="#L58">58</a> |
| <a class="jxr_linenumber" name="L59" href="#L59">59</a> <em class="jxr_comment">// Only accept queries like [a-zA-Z_$ ]+ (== | < | > | <= | >=) [a-zA-Z\-$\.0-9 ]+</em> |
| <a class="jxr_linenumber" name="L60" href="#L60">60</a> <strong class="jxr_keyword">int</strong> comp = -1; |
| <a class="jxr_linenumber" name="L61" href="#L61">61</a> |
| <a class="jxr_linenumber" name="L62" href="#L62">62</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i=0; i<query.length();i++) { |
| <a class="jxr_linenumber" name="L63" href="#L63">63</a> <strong class="jxr_keyword">char</strong> c = query.charAt(i); |
| <a class="jxr_linenumber" name="L64" href="#L64">64</a> |
| <a class="jxr_linenumber" name="L65" href="#L65">65</a> <strong class="jxr_keyword">if</strong> ((c == '=') || (c == '<') || (c == '>') || (c == '!')) { |
| <a class="jxr_linenumber" name="L66" href="#L66">66</a> comp = i; |
| <a class="jxr_linenumber" name="L67" href="#L67">67</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> ( !Character.isJavaIdentifierPart(c) && (c != ' ')) { |
| <a class="jxr_linenumber" name="L68" href="#L68">68</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Invalid query."</span>); |
| <a class="jxr_linenumber" name="L69" href="#L69">69</a> } <strong class="jxr_keyword">else</strong> { |
| <a class="jxr_linenumber" name="L70" href="#L70">70</a> <strong class="jxr_keyword">if</strong> ( comp > 0) { |
| <a class="jxr_linenumber" name="L71" href="#L71">71</a> <strong class="jxr_keyword">break</strong>; |
| <a class="jxr_linenumber" name="L72" href="#L72">72</a> } |
| <a class="jxr_linenumber" name="L73" href="#L73">73</a> } |
| <a class="jxr_linenumber" name="L74" href="#L74">74</a> } |
| <a class="jxr_linenumber" name="L75" href="#L75">75</a> |
| <a class="jxr_linenumber" name="L76" href="#L76">76</a> <strong class="jxr_keyword">if</strong> (comp<=0) { |
| <a class="jxr_linenumber" name="L77" href="#L77">77</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Invalid query."</span>); |
| <a class="jxr_linenumber" name="L78" href="#L78">78</a> } |
| <a class="jxr_linenumber" name="L79" href="#L79">79</a> |
| <a class="jxr_linenumber" name="L80" href="#L80">80</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i=comp+1; i<query.length();i++) { |
| <a class="jxr_linenumber" name="L81" href="#L81">81</a> <strong class="jxr_keyword">char</strong> c = query.charAt(i); |
| <a class="jxr_linenumber" name="L82" href="#L82">82</a> |
| <a class="jxr_linenumber" name="L83" href="#L83">83</a> <strong class="jxr_keyword">if</strong> (!Character.isJavaIdentifierPart(c) && (c != ' ') && (c != '"') && (c != '\'')) { |
| <a class="jxr_linenumber" name="L84" href="#L84">84</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Invalid query."</span>); |
| <a class="jxr_linenumber" name="L85" href="#L85">85</a> } |
| <a class="jxr_linenumber" name="L86" href="#L86">86</a> } |
| <a class="jxr_linenumber" name="L87" href="#L87">87</a> |
| <a class="jxr_linenumber" name="L88" href="#L88">88</a> <strong class="jxr_keyword">this</strong>.query = query; |
| <a class="jxr_linenumber" name="L89" href="#L89">89</a> |
| <a class="jxr_linenumber" name="L90" href="#L90">90</a> <strong class="jxr_keyword">try</strong> { |
| <a class="jxr_linenumber" name="L91" href="#L91">91</a> expression = Ognl.parseExpression(query); |
| <a class="jxr_linenumber" name="L92" href="#L92">92</a> } <strong class="jxr_keyword">catch</strong> (OgnlException e) { |
| <a class="jxr_linenumber" name="L93" href="#L93">93</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"query: "</span> + query); |
| <a class="jxr_linenumber" name="L94" href="#L94">94</a> } |
| <a class="jxr_linenumber" name="L95" href="#L95">95</a> } |
| <a class="jxr_linenumber" name="L96" href="#L96">96</a> |
| <a class="jxr_linenumber" name="L97" href="#L97">97</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L98" href="#L98">98</a> <em class="jxr_javadoccomment"> * Finds a {@link Set} of {@link IoSession}s that matches the query</em> |
| <a class="jxr_linenumber" name="L99" href="#L99">99</a> <em class="jxr_javadoccomment"> * from the specified sessions and returns the matches.</em> |
| <a class="jxr_linenumber" name="L100" href="#L100">100</a> <em class="jxr_javadoccomment"> * @throws OgnlException if failed to evaluate the OGNL expression</em> |
| <a class="jxr_linenumber" name="L101" href="#L101">101</a> <em class="jxr_javadoccomment"> * </em> |
| <a class="jxr_linenumber" name="L102" href="#L102">102</a> <em class="jxr_javadoccomment"> * @param sessions The list of sessions to check</em> |
| <a class="jxr_linenumber" name="L103" href="#L103">103</a> <em class="jxr_javadoccomment"> * @return A set of the session that matches the query</em> |
| <a class="jxr_linenumber" name="L104" href="#L104">104</a> <em class="jxr_javadoccomment"> * @throws OgnlException If we can't find a boolean value in a session's context</em> |
| <a class="jxr_linenumber" name="L105" href="#L105">105</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L106" href="#L106">106</a> <strong class="jxr_keyword">public</strong> Set<IoSession> find(Iterable<IoSession> sessions) <strong class="jxr_keyword">throws</strong> OgnlException { |
| <a class="jxr_linenumber" name="L107" href="#L107">107</a> <strong class="jxr_keyword">if</strong> (sessions == <strong class="jxr_keyword">null</strong>) { |
| <a class="jxr_linenumber" name="L108" href="#L108">108</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"sessions"</span>); |
| <a class="jxr_linenumber" name="L109" href="#L109">109</a> } |
| <a class="jxr_linenumber" name="L110" href="#L110">110</a> |
| <a class="jxr_linenumber" name="L111" href="#L111">111</a> Set<IoSession> answer = <strong class="jxr_keyword">new</strong> LinkedHashSet<IoSession>(); |
| <a class="jxr_linenumber" name="L112" href="#L112">112</a> |
| <a class="jxr_linenumber" name="L113" href="#L113">113</a> <strong class="jxr_keyword">for</strong> (IoSession s : sessions) { |
| <a class="jxr_linenumber" name="L114" href="#L114">114</a> OgnlContext context = (OgnlContext) Ognl.createDefaultContext(s); |
| <a class="jxr_linenumber" name="L115" href="#L115">115</a> context.setTypeConverter(typeConverter); |
| <a class="jxr_linenumber" name="L116" href="#L116">116</a> context.put(AbstractPropertyAccessor.READ_ONLY_MODE, <strong class="jxr_keyword">true</strong>); |
| <a class="jxr_linenumber" name="L117" href="#L117">117</a> context.put(AbstractPropertyAccessor.QUERY, query); |
| <a class="jxr_linenumber" name="L118" href="#L118">118</a> Object result = Ognl.getValue(expression, context, s); |
| <a class="jxr_linenumber" name="L119" href="#L119">119</a> |
| <a class="jxr_linenumber" name="L120" href="#L120">120</a> <strong class="jxr_keyword">if</strong> (result instanceof Boolean) { |
| <a class="jxr_linenumber" name="L121" href="#L121">121</a> <strong class="jxr_keyword">if</strong> (((Boolean) result).booleanValue()) { |
| <a class="jxr_linenumber" name="L122" href="#L122">122</a> answer.add(s); |
| <a class="jxr_linenumber" name="L123" href="#L123">123</a> } |
| <a class="jxr_linenumber" name="L124" href="#L124">124</a> } <strong class="jxr_keyword">else</strong> { |
| <a class="jxr_linenumber" name="L125" href="#L125">125</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> OgnlException(<span class="jxr_string">"Query didn't return a boolean value: "</span> + query); |
| <a class="jxr_linenumber" name="L126" href="#L126">126</a> } |
| <a class="jxr_linenumber" name="L127" href="#L127">127</a> } |
| <a class="jxr_linenumber" name="L128" href="#L128">128</a> |
| <a class="jxr_linenumber" name="L129" href="#L129">129</a> <strong class="jxr_keyword">return</strong> answer; |
| <a class="jxr_linenumber" name="L130" href="#L130">130</a> } |
| <a class="jxr_linenumber" name="L131" href="#L131">131</a> } |
| </pre> |
| <hr/> |
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