Google Git
Sign in
apache / mina-site / refs/heads/mina-gen-docs / . / 2.1.3 / xref / org / apache / mina / example / imagine / step3 / server / ImageServerIoHandler.html
blob: 32fa7a8749ffc048b1dcf30613a8a98b4cdc34d5 [file] [log] [blame]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head><meta http-equiv="content-type" content="text/html; charset=UTF-8" />
<title>ImageServerIoHandler xref</title>
<link type="text/css" rel="stylesheet" href="../../../../../../../stylesheet.css" />
</head>
<body>
<div id="overview"><a href="../../../../../../../../apidocs/org/apache/mina/example/imagine/step3/server/ImageServerIoHandler.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</em>
<a class="jxr_linenumber" name="L3" href="#L3">3</a> <em class="jxr_comment"> * or more contributor license agreements. See the NOTICE file</em>
<a class="jxr_linenumber" name="L4" href="#L4">4</a> <em class="jxr_comment"> * distributed with this work for additional information</em>
<a class="jxr_linenumber" name="L5" href="#L5">5</a> <em class="jxr_comment"> * regarding copyright ownership. The ASF licenses this file</em>
<a class="jxr_linenumber" name="L6" href="#L6">6</a> <em class="jxr_comment"> * to you under the Apache License, Version 2.0 (the</em>
<a class="jxr_linenumber" name="L7" href="#L7">7</a> <em class="jxr_comment"> * "License"); you may not use this file except in compliance</em>
<a class="jxr_linenumber" name="L8" href="#L8">8</a> <em class="jxr_comment"> * with the License. You may obtain a copy of the License at</em>
<a class="jxr_linenumber" name="L9" href="#L9">9</a> <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="L10" href="#L10">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 class="jxr_linenumber" name="L11" href="#L11">11</a> <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="L12" href="#L12">12</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing,</em>
<a class="jxr_linenumber" name="L13" href="#L13">13</a> <em class="jxr_comment"> * software distributed under the License is distributed on an</em>
<a class="jxr_linenumber" name="L14" href="#L14">14</a> <em class="jxr_comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</em>
<a class="jxr_linenumber" name="L15" href="#L15">15</a> <em class="jxr_comment"> * KIND, either express or implied. See the License for the</em>
<a class="jxr_linenumber" name="L16" href="#L16">16</a> <em class="jxr_comment"> * specific language governing permissions and limitations</em>
<a class="jxr_linenumber" name="L17" href="#L17">17</a> <em class="jxr_comment"> * under the License.</em>
<a class="jxr_linenumber" name="L18" href="#L18">18</a> <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="L19" href="#L19">19</a> <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="L20" href="#L20">20</a> <strong class="jxr_keyword">package</strong> org.apache.mina.example.imagine.step3.server;
<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> java.awt.Color;
<a class="jxr_linenumber" name="L23" href="#L23">23</a> <strong class="jxr_keyword">import</strong> java.awt.Font;
<a class="jxr_linenumber" name="L24" href="#L24">24</a> <strong class="jxr_keyword">import</strong> java.awt.Graphics;
<a class="jxr_linenumber" name="L25" href="#L25">25</a> <strong class="jxr_keyword">import</strong> java.awt.image.BufferedImage;
<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> javax.management.MBeanServer;
<a class="jxr_linenumber" name="L28" href="#L28">28</a> <strong class="jxr_keyword">import</strong> javax.management.ObjectName;
<a class="jxr_linenumber" name="L29" href="#L29">29</a>
<a class="jxr_linenumber" name="L30" href="#L30">30</a> <strong class="jxr_keyword">import</strong> org.apache.mina.core.service.IoHandlerAdapter;
<a class="jxr_linenumber" name="L31" href="#L31">31</a> <strong class="jxr_keyword">import</strong> org.apache.mina.core.session.IoSession;
<a class="jxr_linenumber" name="L32" href="#L32">32</a> <strong class="jxr_keyword">import</strong> org.apache.mina.example.imagine.step1.ImageRequest;
<a class="jxr_linenumber" name="L33" href="#L33">33</a> <strong class="jxr_keyword">import</strong> org.apache.mina.example.imagine.step1.ImageResponse;
<a class="jxr_linenumber" name="L34" href="#L34">34</a> <strong class="jxr_keyword">import</strong> org.apache.mina.integration.jmx.IoSessionMBean;
<a class="jxr_linenumber" name="L35" href="#L35">35</a> <strong class="jxr_keyword">import</strong> org.slf4j.Logger;
<a class="jxr_linenumber" name="L36" href="#L36">36</a> <strong class="jxr_keyword">import</strong> org.slf4j.LoggerFactory;
<a class="jxr_linenumber" name="L37" href="#L37">37</a>
<a class="jxr_linenumber" name="L38" href="#L38">38</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L39" href="#L39">39</a> <em class="jxr_javadoccomment"> * server-side {@link org.apache.mina.core.service.IoHandler}</em>
<a class="jxr_linenumber" name="L40" href="#L40">40</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L41" href="#L41">41</a> <em class="jxr_javadoccomment"> * @author &lt;a href="<a href="http://mina.apache.org" target="alexandria_uri">http://mina.apache.org</a>"&gt;Apache MINA Project&lt;/a&gt;</em>
<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>
<a class="jxr_linenumber" name="L44" href="#L44">44</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a name="ImageServerIoHandler" href="../../../../../../../org/apache/mina/example/imagine/step3/server/ImageServerIoHandler.html#ImageServerIoHandler">ImageServerIoHandler</a> <strong class="jxr_keyword">extends</strong> <a name="IoHandlerAdapter" href="../../../../../../../org/apache/mina/core/service/IoHandlerAdapter.html#IoHandlerAdapter">IoHandlerAdapter</a> {
<a class="jxr_linenumber" name="L45" href="#L45">45</a>
<a class="jxr_linenumber" name="L46" href="#L46">46</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">static</strong> String characters = <span class="jxr_string">"mina rocks abcdefghijklmnopqrstuvwxyz0123456789"</span>;
<a class="jxr_linenumber" name="L47" href="#L47">47</a>
<a class="jxr_linenumber" name="L48" href="#L48">48</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String INDEX_KEY = ImageServerIoHandler.<strong class="jxr_keyword">class</strong>.getName() + <span class="jxr_string">".INDEX"</span>;
<a class="jxr_linenumber" name="L49" href="#L49">49</a>
<a class="jxr_linenumber" name="L50" href="#L50">50</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> Logger LOGGER = LoggerFactory.getLogger(ImageServerIoHandler.<strong class="jxr_keyword">class</strong>);
<a class="jxr_linenumber" name="L51" href="#L51">51</a>
<a class="jxr_linenumber" name="L52" href="#L52">52</a> <strong class="jxr_keyword">private</strong> MBeanServer mBeanServer;
<a class="jxr_linenumber" name="L53" href="#L53">53</a>
<a class="jxr_linenumber" name="L54" href="#L54">54</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L55" href="#L55">55</a> <em class="jxr_javadoccomment"> * Creates a new instance of ImageServerIoHandler. For this step, we pass in a reference</em>
<a class="jxr_linenumber" name="L56" href="#L56">56</a> <em class="jxr_javadoccomment"> * to the MBeanServer. This instance will be used to register new IoSession objects</em>
<a class="jxr_linenumber" name="L57" href="#L57">57</a> <em class="jxr_javadoccomment"> * so that the JMX subsystem can report statistics on the sessions.</em>
<a class="jxr_linenumber" name="L58" href="#L58">58</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L59" href="#L59">59</a> <em class="jxr_javadoccomment"> * @param mBeanServer</em>
<a class="jxr_linenumber" name="L60" href="#L60">60</a> <em class="jxr_javadoccomment"> * The JMX MBeanServer that will register the sessions</em>
<a class="jxr_linenumber" name="L61" href="#L61">61</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L62" href="#L62">62</a> <strong class="jxr_keyword">public</strong> <a name="ImageServerIoHandler" href="../../../../../../../org/apache/mina/example/imagine/step3/server/ImageServerIoHandler.html#ImageServerIoHandler">ImageServerIoHandler</a>( MBeanServer mBeanServer ) {
<a class="jxr_linenumber" name="L63" href="#L63">63</a> <strong class="jxr_keyword">this</strong>.mBeanServer = mBeanServer;
<a class="jxr_linenumber" name="L64" href="#L64">64</a> }
<a class="jxr_linenumber" name="L65" href="#L65">65</a>
<a class="jxr_linenumber" name="L66" href="#L66">66</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L67" href="#L67">67</a> <em class="jxr_javadoccomment"> * This method is called first when a new connection to the server is made. In here we will set</em>
<a class="jxr_linenumber" name="L68" href="#L68">68</a> <em class="jxr_javadoccomment"> * up the JMX session MBean.</em>
<a class="jxr_linenumber" name="L69" href="#L69">69</a> <em class="jxr_javadoccomment"> * </em>
<a class="jxr_linenumber" name="L70" href="#L70">70</a> <em class="jxr_javadoccomment"> * @see org.apache.mina.core.service.IoHandlerAdapter#sessionCreated(org.apache.mina.core.session.IoSession)</em>
<a class="jxr_linenumber" name="L71" href="#L71">71</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L72" href="#L72">72</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> sessionCreated( <a name="IoSession" href="../../../../../../../org/apache/mina/core/session/IoSession.html#IoSession">IoSession</a> session ) <strong class="jxr_keyword">throws</strong> Exception
<a class="jxr_linenumber" name="L73" href="#L73">73</a> {
<a class="jxr_linenumber" name="L74" href="#L74">74</a> <em class="jxr_comment">// create a session MBean in order to load into the MBeanServer and allow</em>
<a class="jxr_linenumber" name="L75" href="#L75">75</a> <em class="jxr_comment">// this session to be managed by the JMX subsystem.</em>
<a class="jxr_linenumber" name="L76" href="#L76">76</a> <a name="IoSessionMBean" href="../../../../../../../org/apache/mina/int<a name="IoSessionMBean" href="../../../../../../../org/apache/mina/integration/jmx/IoSessionMBean.html#IoSessionMBean">IoSessionMBean</a>oSessionMBean.html#IoSessionMBean">IoSessionMBean</a> sessionMBean = <strong class="jxr_keyword">new</strong> <a name="IoSessionMBean" href="../../../../../../../org/apache/mina/integration/jmx/IoSessionMBean.html#IoSessionMBean">IoSessionMBean</a>( session );
<a class="jxr_linenumber" name="L77" href="#L77">77</a>
<a class="jxr_linenumber" name="L78" href="#L78">78</a> <em class="jxr_comment">// create a JMX ObjectName. This has to be in a specific format. </em>
<a class="jxr_linenumber" name="L79" href="#L79">79</a> ObjectName sessionName = <strong class="jxr_keyword">new</strong> ObjectName( session.getClass().getPackage().getName() +
<a class="jxr_linenumber" name="L80" href="#L80">80</a> <span class="jxr_string">":type=session,name="</span> + session.getClass().getSimpleName() + <span class="jxr_string">"-"</span> + session.getId());
<a class="jxr_linenumber" name="L81" href="#L81">81</a>
<a class="jxr_linenumber" name="L82" href="#L82">82</a> <em class="jxr_comment">// register the bean on the MBeanServer. Without this line, no JMX will happen for</em>
<a class="jxr_linenumber" name="L83" href="#L83">83</a> <em class="jxr_comment">// this session</em>
<a class="jxr_linenumber" name="L84" href="#L84">84</a> mBeanServer.registerMBean( sessionMBean, sessionName );
<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> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L88" href="#L88">88</a> <em class="jxr_javadoccomment"> * Called when the session is opened, which will come after the session created.</em>
<a class="jxr_linenumber" name="L89" href="#L89">89</a> <em class="jxr_javadoccomment"> * </em>
<a class="jxr_linenumber" name="L90" href="#L90">90</a> <em class="jxr_javadoccomment"> * @see org.apache.mina.core.service.IoHandlerAdapter#sessionOpened(org.apache.mina.core.session.IoSession)</em>
<a class="jxr_linenumber" name="L91" href="#L91">91</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L92" href="#L92">92</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> sessionOpened(<a name="IoSession" href="../../../../../../../org/apache/mina/core/session/IoSession.html#IoSession">IoSession</a> session) <strong class="jxr_keyword">throws</strong> Exception {
<a class="jxr_linenumber" name="L93" href="#L93">93</a>
<a class="jxr_linenumber" name="L94" href="#L94">94</a> <em class="jxr_comment">// set the index to zero. This is used to determine how the build the</em>
<a class="jxr_linenumber" name="L95" href="#L95">95</a> <em class="jxr_comment">// string that is sent to the client.</em>
<a class="jxr_linenumber" name="L96" href="#L96">96</a> session.setAttribute(INDEX_KEY, 0);
<a class="jxr_linenumber" name="L97" href="#L97">97</a> }
<a class="jxr_linenumber" name="L98" href="#L98">98</a>
<a class="jxr_linenumber" name="L99" href="#L99">99</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L100" href="#L100">100</a> <em class="jxr_javadoccomment"> * This method will be called whenever an exception occurs. For this handler,</em>
<a class="jxr_linenumber" name="L101" href="#L101">101</a> <em class="jxr_javadoccomment"> * the logger will generate a warning message.</em>
<a class="jxr_linenumber" name="L102" href="#L102">102</a> <em class="jxr_javadoccomment"> * </em>
<a class="jxr_linenumber" name="L103" href="#L103">103</a> <em class="jxr_javadoccomment"> * @see org.apache.mina.core.service.IoHandlerAdapter#exceptionCaught(org.apache.mina.core.session.IoSession, java.lang.Throwable)</em>
<a class="jxr_linenumber" name="L104" href="#L104">104</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L105" href="#L105">105</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> exceptionCaught(<a name="IoSession" href="../../../../../../../org/apache/mina/core/session/IoSession.html#IoSession">IoSession</a> session, Throwable cause) <strong class="jxr_keyword">throws</strong> Exception {
<a class="jxr_linenumber" name="L106" href="#L106">106</a> LOGGER.warn(cause.getMessage(), cause);
<a class="jxr_linenumber" name="L107" href="#L107">107</a> }
<a class="jxr_linenumber" name="L108" href="#L108">108</a>
<a class="jxr_linenumber" name="L109" href="#L109">109</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L110" href="#L110">110</a> <em class="jxr_javadoccomment"> * Handle incoming messages.</em>
<a class="jxr_linenumber" name="L111" href="#L111">111</a> <em class="jxr_javadoccomment"> * </em>
<a class="jxr_linenumber" name="L112" href="#L112">112</a> <em class="jxr_javadoccomment"> * @see org.apache.mina.core.service.IoHandlerAdapter#messageReceived(org.apache.mina.core.session.IoSession, java.lang.Object)</em>
<a class="jxr_linenumber" name="L113" href="#L113">113</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L114" href="#L114">114</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> messageReceived(<a name="IoSession" href="../../../../../../../org/apache/mina/core/session/IoSession.html#IoSession">IoSession</a> session, Object message) <strong class="jxr_keyword">throws</strong> Exception {
<a class="jxr_linenumber" name="L115" href="#L115">115</a> <a name="ImageRequest" h<a name="ImageRequest" href="../../../../../../../org/apache/mina/example/imagine/step1/ImageRequest.html#ImageRequest">ImageRequest</a>./../../../../org/apache/mina/example/imagine/step1/ImageRequest.html#ImageRequest">ImageRequest</a> request = (<a name="ImageRequest" href="../../../../../../../org/apache/mina/example/imagine/step1/ImageRequest.html#ImageRequest">ImageRequest</a>) message;
<a class="jxr_linenumber" name="L116" href="#L116">116</a> String text1 = generateString(session, request.getNumberOfCharacters());
<a class="jxr_linenumber" name="L117" href="#L117">117</a> String text2 = generateString(session, request.getNumberOfCharacters());
<a class="jxr_linenumber" name="L118" href="#L118">118</a> BufferedImage image1 = createImage(request, text1);
<a class="jxr_linenumber" name="L119" href="#L119">119</a> BufferedImage image2 = createImage(request, text2);
<a class="jxr_linenumber" name="L120" href="#L120">120</a> <a name="ImageResponse" href="../../../../../../../org/apache/mina<a name="ImageResponse" href="../../../../../../../org/apache/mina/example/imagine/step1/ImageResponse.html#ImageResponse">ImageResponse</a>ine/step1/ImageResponse.html#ImageResponse">ImageResponse</a> response = <strong class="jxr_keyword">new</strong> <a name="ImageResponse" href="../../../../../../../org/apache/mina/example/imagine/step1/ImageResponse.html#ImageResponse">ImageResponse</a>(image1, image2);
<a class="jxr_linenumber" name="L121" href="#L121">121</a> session.write(response);
<a class="jxr_linenumber" name="L122" href="#L122">122</a> }
<a class="jxr_linenumber" name="L123" href="#L123">123</a>
<a class="jxr_linenumber" name="L124" href="#L124">124</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L125" href="#L125">125</a> <em class="jxr_javadoccomment"> * Create an image using the specified request and the text. </em>
<a class="jxr_linenumber" name="L126" href="#L126">126</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L127" href="#L127">127</a> <em class="jxr_javadoccomment"> * @param request</em>
<a class="jxr_linenumber" name="L128" href="#L128">128</a> <em class="jxr_javadoccomment"> * Determines the height and width of the image</em>
<a class="jxr_linenumber" name="L129" href="#L129">129</a> <em class="jxr_javadoccomment"> * @param text</em>
<a class="jxr_linenumber" name="L130" href="#L130">130</a> <em class="jxr_javadoccomment"> * The text that is placed in the image</em>
<a class="jxr_linenumber" name="L131" href="#L131">131</a> <em class="jxr_javadoccomment"> * @return</em>
<a class="jxr_linenumber" name="L132" href="#L132">132</a> <em class="jxr_javadoccomment"> * a BufferedImage representing the text.</em>
<a class="jxr_linenumber" name="L133" href="#L133">133</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L134" href="#L134">134</a> <strong class="jxr_keyword">private</strong> BufferedImage createImage(<a name="ImageRequest" href="../../../../../../../org/apache/mina/example/imagine/step1/ImageRequest.html#ImageRequest">ImageRequest</a> request, String text) {
<a class="jxr_linenumber" name="L135" href="#L135">135</a> BufferedImage image = <strong class="jxr_keyword">new</strong> BufferedImage(request.getWidth(), request.getHeight(), BufferedImage.TYPE_BYTE_INDEXED);
<a class="jxr_linenumber" name="L136" href="#L136">136</a> Graphics graphics = image.createGraphics();
<a class="jxr_linenumber" name="L137" href="#L137">137</a> graphics.setColor(Color.YELLOW);
<a class="jxr_linenumber" name="L138" href="#L138">138</a> graphics.fillRect(0, 0, image.getWidth(), image.getHeight());
<a class="jxr_linenumber" name="L139" href="#L139">139</a> Font serif = <strong class="jxr_keyword">new</strong> Font(<span class="jxr_string">"serif"</span>, Font.PLAIN, 30);
<a class="jxr_linenumber" name="L140" href="#L140">140</a> graphics.setFont(serif);
<a class="jxr_linenumber" name="L141" href="#L141">141</a> graphics.setColor(Color.BLUE);
<a class="jxr_linenumber" name="L142" href="#L142">142</a> graphics.drawString(text, 10, 50);
<a class="jxr_linenumber" name="L143" href="#L143">143</a> <strong class="jxr_keyword">return</strong> image;
<a class="jxr_linenumber" name="L144" href="#L144">144</a> }
<a class="jxr_linenumber" name="L145" href="#L145">145</a>
<a class="jxr_linenumber" name="L146" href="#L146">146</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L147" href="#L147">147</a> <em class="jxr_javadoccomment"> * Generate a string based on the 'characters' field in this class. The</em>
<a class="jxr_linenumber" name="L148" href="#L148">148</a> <em class="jxr_javadoccomment"> * characters that make up the string are based on the session </em>
<a class="jxr_linenumber" name="L149" href="#L149">149</a> <em class="jxr_javadoccomment"> * attribute "INDEX_KEY"</em>
<a class="jxr_linenumber" name="L150" href="#L150">150</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L151" href="#L151">151</a> <em class="jxr_javadoccomment"> * @param session</em>
<a class="jxr_linenumber" name="L152" href="#L152">152</a> <em class="jxr_javadoccomment"> * The {@link IoSession} object that will provide the INDEX_KEY attribute</em>
<a class="jxr_linenumber" name="L153" href="#L153">153</a> <em class="jxr_javadoccomment"> * @param length</em>
<a class="jxr_linenumber" name="L154" href="#L154">154</a> <em class="jxr_javadoccomment"> * The length that the String will be</em>
<a class="jxr_linenumber" name="L155" href="#L155">155</a> <em class="jxr_javadoccomment"> * @return</em>
<a class="jxr_linenumber" name="L156" href="#L156">156</a> <em class="jxr_javadoccomment"> * The generated String</em>
<a class="jxr_linenumber" name="L157" href="#L157">157</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L158" href="#L158">158</a> <strong class="jxr_keyword">private</strong> String generateString(<a name="IoSession" href="../../../../../../../org/apache/mina/core/session/IoSession.html#IoSession">IoSession</a> session, <strong class="jxr_keyword">int</strong> length) {
<a class="jxr_linenumber" name="L159" href="#L159">159</a> Integer index = (Integer) session.getAttribute(INDEX_KEY);
<a class="jxr_linenumber" name="L160" href="#L160">160</a> StringBuilder buffer = <strong class="jxr_keyword">new</strong> StringBuilder(length);
<a class="jxr_linenumber" name="L161" href="#L161">161</a> <strong class="jxr_keyword">while</strong> (buffer.length() &lt; length) {
<a class="jxr_linenumber" name="L162" href="#L162">162</a> buffer.append(characters.charAt(index));
<a class="jxr_linenumber" name="L163" href="#L163">163</a> index++;
<a class="jxr_linenumber" name="L164" href="#L164">164</a> <strong class="jxr_keyword">if</strong> (index &gt;= characters.length()) {
<a class="jxr_linenumber" name="L165" href="#L165">165</a> index = 0;
<a class="jxr_linenumber" name="L166" href="#L166">166</a> }
<a class="jxr_linenumber" name="L167" href="#L167">167</a> }
<a class="jxr_linenumber" name="L168" href="#L168">168</a> session.setAttribute(INDEX_KEY, index);
<a class="jxr_linenumber" name="L169" href="#L169">169</a> <strong class="jxr_keyword">return</strong> buffer.toString();
<a class="jxr_linenumber" name="L170" href="#L170">170</a> }
<a class="jxr_linenumber" name="L171" href="#L171">171</a>
<a class="jxr_linenumber" name="L172" href="#L172">172</a> }
</pre>
<hr/>
<div id="footer">Copyright &#169; 2004&#x2013;2019 <a href="https://mina.apache.org/">Apache MINA Project</a>. All rights reserved.</div>
</body>
</html>