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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> <em class="jxr_comment"> */</em> |
| <a name="20" href="#20">20</a> <strong class="jxr_keyword">package</strong> org.apache.mina.filter.codec.demux; |
| <a name="21" href="#21">21</a> |
| <a name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> org.apache.mina.core.buffer.IoBuffer; |
| <a name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> org.apache.mina.core.session.AttributeKey; |
| <a name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> org.apache.mina.core.session.IoSession; |
| <a name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> org.apache.mina.filter.codec.CumulativeProtocolDecoder; |
| <a name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> org.apache.mina.filter.codec.ProtocolDecoder; |
| <a name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> org.apache.mina.filter.codec.ProtocolDecoderException; |
| <a name="28" href="#28">28</a> <strong class="jxr_keyword">import</strong> org.apache.mina.filter.codec.ProtocolDecoderOutput; |
| <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"> * A composite {@link ProtocolDecoder} that demultiplexes incoming {@link IoBuffer}</em> |
| <a name="32" href="#32">32</a> <em class="jxr_javadoccomment"> * decoding requests into an appropriate {@link MessageDecoder}.</em> |
| <a name="33" href="#33">33</a> <em class="jxr_javadoccomment"> * </em> |
| <a name="34" href="#34">34</a> <em class="jxr_javadoccomment"> * <h2>Internal mechanism of {@link MessageDecoder} selection</h2></em> |
| <a name="35" href="#35">35</a> <em class="jxr_javadoccomment"> * <p></em> |
| <a name="36" href="#36">36</a> <em class="jxr_javadoccomment"> * <ol></em> |
| <a name="37" href="#37">37</a> <em class="jxr_javadoccomment"> * <li>{@link DemuxingProtocolDecoder} iterates the list of candidate</em> |
| <a name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * {@link MessageDecoder}s and calls {@link MessageDecoder#decodable(IoSession, IoBuffer)}.</em> |
| <a name="39" href="#39">39</a> <em class="jxr_javadoccomment"> * Initially, all registered {@link MessageDecoder}s are candidates.</li></em> |
| <a name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * <li>If {@link MessageDecoderResult#NOT_OK} is returned, it is removed from the candidate</em> |
| <a name="41" href="#41">41</a> <em class="jxr_javadoccomment"> * list.</li></em> |
| <a name="42" href="#42">42</a> <em class="jxr_javadoccomment"> * <li>If {@link MessageDecoderResult#NEED_DATA} is returned, it is retained in the candidate</em> |
| <a name="43" href="#43">43</a> <em class="jxr_javadoccomment"> * list, and its {@link MessageDecoder#decodable(IoSession, IoBuffer)} will be invoked</em> |
| <a name="44" href="#44">44</a> <em class="jxr_javadoccomment"> * again when more data is received.</li></em> |
| <a name="45" href="#45">45</a> <em class="jxr_javadoccomment"> * <li>If {@link MessageDecoderResult#OK} is returned, {@link DemuxingProtocolDecoder}</em> |
| <a name="46" href="#46">46</a> <em class="jxr_javadoccomment"> * found the right {@link MessageDecoder}.</li></em> |
| <a name="47" href="#47">47</a> <em class="jxr_javadoccomment"> * <li>If there's no candidate left, an exception is raised. Otherwise, </em> |
| <a name="48" href="#48">48</a> <em class="jxr_javadoccomment"> * {@link DemuxingProtocolDecoder} will keep iterating the candidate list.</em> |
| <a name="49" href="#49">49</a> <em class="jxr_javadoccomment"> * </ol></em> |
| <a name="50" href="#50">50</a> <em class="jxr_javadoccomment"> * </em> |
| <a name="51" href="#51">51</a> <em class="jxr_javadoccomment"> * Please note that any change of position and limit of the specified {@link IoBuffer}</em> |
| <a name="52" href="#52">52</a> <em class="jxr_javadoccomment"> * in {@link MessageDecoder#decodable(IoSession, IoBuffer)} will be reverted back to its</em> |
| <a name="53" href="#53">53</a> <em class="jxr_javadoccomment"> * original value.</em> |
| <a name="54" href="#54">54</a> <em class="jxr_javadoccomment"> * <p></em> |
| <a name="55" href="#55">55</a> <em class="jxr_javadoccomment"> * Once a {@link MessageDecoder} is selected, {@link DemuxingProtocolDecoder} calls</em> |
| <a name="56" href="#56">56</a> <em class="jxr_javadoccomment"> * {@link MessageDecoder#decode(IoSession, IoBuffer, ProtocolDecoderOutput)} continuously</em> |
| <a name="57" href="#57">57</a> <em class="jxr_javadoccomment"> * reading its return value:</em> |
| <a name="58" href="#58">58</a> <em class="jxr_javadoccomment"> * <ul></em> |
| <a name="59" href="#59">59</a> <em class="jxr_javadoccomment"> * <li>{@link MessageDecoderResult#NOT_OK} - protocol violation; {@link ProtocolDecoderException}</em> |
| <a name="60" href="#60">60</a> <em class="jxr_javadoccomment"> * is raised automatically.</li></em> |
| <a name="61" href="#61">61</a> <em class="jxr_javadoccomment"> * <li>{@link MessageDecoderResult#NEED_DATA} - needs more data to read the whole message;</em> |
| <a name="62" href="#62">62</a> <em class="jxr_javadoccomment"> * {@link MessageDecoder#decode(IoSession, IoBuffer, ProtocolDecoderOutput)}</em> |
| <a name="63" href="#63">63</a> <em class="jxr_javadoccomment"> * will be invoked again when more data is received.</li></em> |
| <a name="64" href="#64">64</a> <em class="jxr_javadoccomment"> * <li>{@link MessageDecoderResult#OK} - successfully decoded a message; the candidate list will</em> |
| <a name="65" href="#65">65</a> <em class="jxr_javadoccomment"> * be reset and the selection process will start over.</li></em> |
| <a name="66" href="#66">66</a> <em class="jxr_javadoccomment"> * </ul></em> |
| <a name="67" href="#67">67</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="68" href="#68">68</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 name="69" href="#69">69</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="70" href="#70">70</a> <em class="jxr_javadoccomment"> * @see MessageDecoderFactory</em> |
| <a name="71" href="#71">71</a> <em class="jxr_javadoccomment"> * @see MessageDecoder</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> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolDecoder.html">DemuxingProtocolDecoder</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../../org/apache/mina/filter/codec/CumulativeProtocolDecoder.html">CumulativeProtocolDecoder</a> { |
| <a name="74" href="#74">74</a> |
| <a name="75" href="#75">75</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../../org/apache/mina/core/session/AttributeKey.html">AttributeKey</a> STATE = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/mina/core/session/AttributeKey.html">AttributeKey</a>(getClass(), <span class="jxr_string">"state"</span>); |
| <a name="76" href="#76">76</a> |
| <a name="77" href="#77">77</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoderFactory.html">MessageDecoderFactory</a>[] decoderFactories = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoderFactory.html">MessageDecoderFactory</a>[0]; |
| <a name="78" href="#78">78</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Class<?>[] EMPTY_PARAMS = <strong class="jxr_keyword">new</strong> Class[0]; |
| <a name="79" href="#79">79</a> |
| <a name="80" href="#80">80</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolDecoder.html">DemuxingProtocolDecoder</a>() { |
| <a name="81" href="#81">81</a> <em class="jxr_comment">// Do nothing</em> |
| <a name="82" href="#82">82</a> } |
| <a name="83" href="#83">83</a> |
| <a name="84" href="#84">84</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addMessageDecoder(Class<? <strong class="jxr_keyword">extends</strong> MessageDecoder> decoderClass) { |
| <a name="85" href="#85">85</a> <strong class="jxr_keyword">if</strong> (decoderClass == <strong class="jxr_keyword">null</strong>) { |
| <a name="86" href="#86">86</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException(<span class="jxr_string">"decoderClass"</span>); |
| <a name="87" href="#87">87</a> } |
| <a name="88" href="#88">88</a> |
| <a name="89" href="#89">89</a> <strong class="jxr_keyword">try</strong> { |
| <a name="90" href="#90">90</a> decoderClass.getConstructor(EMPTY_PARAMS); |
| <a name="91" href="#91">91</a> } <strong class="jxr_keyword">catch</strong> (NoSuchMethodException e) { |
| <a name="92" href="#92">92</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException( |
| <a name="93" href="#93">93</a> <span class="jxr_string">"The specified class doesn't have a public default constructor."</span>); |
| <a name="94" href="#94">94</a> } |
| <a name="95" href="#95">95</a> |
| <a name="96" href="#96">96</a> <strong class="jxr_keyword">boolean</strong> registered = false; |
| <a name="97" href="#97">97</a> <strong class="jxr_keyword">if</strong> (MessageDecoder.<strong class="jxr_keyword">class</strong>.isAssignableFrom(decoderClass)) { |
| <a name="98" href="#98">98</a> addMessageDecoder(<strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolDecoder.html">DefaultConstructorMessageDecoderFactory</a>(decoderClass)); |
| <a name="99" href="#99">99</a> registered = <strong class="jxr_keyword">true</strong>; |
| <a name="100" href="#100">100</a> } |
| <a name="101" href="#101">101</a> |
| <a name="102" href="#102">102</a> <strong class="jxr_keyword">if</strong> (!registered) { |
| <a name="103" href="#103">103</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException( |
| <a name="104" href="#104">104</a> <span class="jxr_string">"Unregisterable type: "</span> + decoderClass); |
| <a name="105" href="#105">105</a> } |
| <a name="106" href="#106">106</a> } |
| <a name="107" href="#107">107</a> |
| <a name="108" href="#108">108</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addMessageDecoder(<a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoder.html">MessageDecoder</a> decoder) { |
| <a name="109" href="#109">109</a> addMessageDecoder(<strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolDecoder.html">SingletonMessageDecoderFactory</a>(decoder)); |
| <a name="110" href="#110">110</a> } |
| <a name="111" href="#111">111</a> |
| <a name="112" href="#112">112</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addMessageDecoder(<a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoderFactory.html">MessageDecoderFactory</a> factory) { |
| <a name="113" href="#113">113</a> <strong class="jxr_keyword">if</strong> (factory == <strong class="jxr_keyword">null</strong>) { |
| <a name="114" href="#114">114</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException(<span class="jxr_string">"factory"</span>); |
| <a name="115" href="#115">115</a> } |
| <a name="116" href="#116">116</a> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoderFactory.html">MessageDecoderFactory</a>[] decoderFactories = <strong class="jxr_keyword">this</strong>.decoderFactories; |
| <a name="117" href="#117">117</a> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoderFactory.html">MessageDecoderFactory</a>[] newDecoderFactories = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoderFactory.html">MessageDecoderFactory</a>[decoderFactories.length + 1]; |
| <a name="118" href="#118">118</a> System.arraycopy(decoderFactories, 0, newDecoderFactories, 0, |
| <a name="119" href="#119">119</a> decoderFactories.length); |
| <a name="120" href="#120">120</a> newDecoderFactories[decoderFactories.length] = factory; |
| <a name="121" href="#121">121</a> <strong class="jxr_keyword">this</strong>.decoderFactories = newDecoderFactories; |
| <a name="122" href="#122">122</a> } |
| <a name="123" href="#123">123</a> |
| <a name="124" href="#124">124</a> @Override |
| <a name="125" href="#125">125</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> doDecode(<a href="../../../../../../org/apache/mina/core/session/IoSession.html">IoSession</a> session, <a href="../../../../../../org/apache/mina/core/buffer/IoBuffer.html">IoBuffer</a> in, |
| <a name="126" href="#126">126</a> <a href="../../../../../../org/apache/mina/filter/codec/ProtocolDecoderOutput.html">ProtocolDecoderOutput</a> out) <strong class="jxr_keyword">throws</strong> Exception { |
| <a name="127" href="#127">127</a> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolEncoder.html">State</a> state = getState(session); |
| <a name="128" href="#128">128</a> |
| <a name="129" href="#129">129</a> <strong class="jxr_keyword">if</strong> (state.currentDecoder == <strong class="jxr_keyword">null</strong>) { |
| <a name="130" href="#130">130</a> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoder.html">MessageDecoder</a>[] decoders = state.decoders; |
| <a name="131" href="#131">131</a> <strong class="jxr_keyword">int</strong> undecodables = 0; |
| <a name="132" href="#132">132</a> |
| <a name="133" href="#133">133</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = decoders.length - 1; i >= 0; i--) { |
| <a name="134" href="#134">134</a> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoder.html">MessageDecoder</a> decoder = decoders[i]; |
| <a name="135" href="#135">135</a> <strong class="jxr_keyword">int</strong> limit = in.limit(); |
| <a name="136" href="#136">136</a> <strong class="jxr_keyword">int</strong> pos = in.position(); |
| <a name="137" href="#137">137</a> |
| <a name="138" href="#138">138</a> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoderResult.html">MessageDecoderResult</a> result; |
| <a name="139" href="#139">139</a> |
| <a name="140" href="#140">140</a> <strong class="jxr_keyword">try</strong> { |
| <a name="141" href="#141">141</a> result = decoder.decodable(session, in); |
| <a name="142" href="#142">142</a> } <strong class="jxr_keyword">finally</strong> { |
| <a name="143" href="#143">143</a> in.position(pos); |
| <a name="144" href="#144">144</a> in.limit(limit); |
| <a name="145" href="#145">145</a> } |
| <a name="146" href="#146">146</a> |
| <a name="147" href="#147">147</a> <strong class="jxr_keyword">if</strong> (result == MessageDecoder.OK) { |
| <a name="148" href="#148">148</a> state.currentDecoder = decoder; |
| <a name="149" href="#149">149</a> <strong class="jxr_keyword">break</strong>; |
| <a name="150" href="#150">150</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (result == MessageDecoder.NOT_OK) { |
| <a name="151" href="#151">151</a> undecodables++; |
| <a name="152" href="#152">152</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (result != MessageDecoder.NEED_DATA) { |
| <a name="153" href="#153">153</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException( |
| <a name="154" href="#154">154</a> <span class="jxr_string">"Unexpected decode result (see your decodable()): "</span> |
| <a name="155" href="#155">155</a> + result); |
| <a name="156" href="#156">156</a> } |
| <a name="157" href="#157">157</a> } |
| <a name="158" href="#158">158</a> |
| <a name="159" href="#159">159</a> <strong class="jxr_keyword">if</strong> (undecodables == decoders.length) { |
| <a name="160" href="#160">160</a> <em class="jxr_comment">// Throw an exception if all decoders cannot decode data.</em> |
| <a name="161" href="#161">161</a> String dump = in.getHexDump(); |
| <a name="162" href="#162">162</a> in.position(in.limit()); <em class="jxr_comment">// Skip data</em> |
| <a name="163" href="#163">163</a> <a href="../../../../../../org/apache/mina/filter/codec/ProtocolDecoderException.html">ProtocolDecoderException</a> e = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/mina/filter/codec/ProtocolDecoderException.html">ProtocolDecoderException</a>( |
| <a name="164" href="#164">164</a> <span class="jxr_string">"No appropriate message decoder: "</span> + dump); |
| <a name="165" href="#165">165</a> e.setHexdump(dump); |
| <a name="166" href="#166">166</a> <strong class="jxr_keyword">throw</strong> e; |
| <a name="167" href="#167">167</a> } |
| <a name="168" href="#168">168</a> |
| <a name="169" href="#169">169</a> <strong class="jxr_keyword">if</strong> (state.currentDecoder == <strong class="jxr_keyword">null</strong>) { |
| <a name="170" href="#170">170</a> <em class="jxr_comment">// Decoder is not determined yet (i.e. we need more data)</em> |
| <a name="171" href="#171">171</a> <strong class="jxr_keyword">return</strong> false; |
| <a name="172" href="#172">172</a> } |
| <a name="173" href="#173">173</a> } |
| <a name="174" href="#174">174</a> |
| <a name="175" href="#175">175</a> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoderResult.html">MessageDecoderResult</a> result = state.currentDecoder.decode(session, in, |
| <a name="176" href="#176">176</a> out); |
| <a name="177" href="#177">177</a> <strong class="jxr_keyword">if</strong> (result == MessageDecoder.OK) { |
| <a name="178" href="#178">178</a> state.currentDecoder = <strong class="jxr_keyword">null</strong>; |
| <a name="179" href="#179">179</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>; |
| <a name="180" href="#180">180</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (result == MessageDecoder.NEED_DATA) { |
| <a name="181" href="#181">181</a> <strong class="jxr_keyword">return</strong> false; |
| <a name="182" href="#182">182</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (result == MessageDecoder.NOT_OK) { |
| <a name="183" href="#183">183</a> state.currentDecoder = <strong class="jxr_keyword">null</strong>; |
| <a name="184" href="#184">184</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/mina/filter/codec/ProtocolDecoderException.html">ProtocolDecoderException</a>( |
| <a name="185" href="#185">185</a> <span class="jxr_string">"Message decoder returned NOT_OK."</span>); |
| <a name="186" href="#186">186</a> } <strong class="jxr_keyword">else</strong> { |
| <a name="187" href="#187">187</a> state.currentDecoder = <strong class="jxr_keyword">null</strong>; |
| <a name="188" href="#188">188</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException( |
| <a name="189" href="#189">189</a> <span class="jxr_string">"Unexpected decode result (see your decode()): "</span> |
| <a name="190" href="#190">190</a> + result); |
| <a name="191" href="#191">191</a> } |
| <a name="192" href="#192">192</a> } |
| <a name="193" href="#193">193</a> |
| <a name="194" href="#194">194</a> @Override |
| <a name="195" href="#195">195</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> finishDecode(<a href="../../../../../../org/apache/mina/core/session/IoSession.html">IoSession</a> session, <a href="../../../../../../org/apache/mina/filter/codec/ProtocolDecoderOutput.html">ProtocolDecoderOutput</a> out) |
| <a name="196" href="#196">196</a> <strong class="jxr_keyword">throws</strong> Exception { |
| <a name="197" href="#197">197</a> <strong class="jxr_keyword">super</strong>.finishDecode(session, out); |
| <a name="198" href="#198">198</a> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolEncoder.html">State</a> state = getState(session); |
| <a name="199" href="#199">199</a> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoder.html">MessageDecoder</a> currentDecoder = state.currentDecoder; |
| <a name="200" href="#200">200</a> <strong class="jxr_keyword">if</strong> (currentDecoder == <strong class="jxr_keyword">null</strong>) { |
| <a name="201" href="#201">201</a> <strong class="jxr_keyword">return</strong>; |
| <a name="202" href="#202">202</a> } |
| <a name="203" href="#203">203</a> |
| <a name="204" href="#204">204</a> currentDecoder.finishDecode(session, out); |
| <a name="205" href="#205">205</a> } |
| <a name="206" href="#206">206</a> |
| <a name="207" href="#207">207</a> @Override |
| <a name="208" href="#208">208</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> dispose(<a href="../../../../../../org/apache/mina/core/session/IoSession.html">IoSession</a> session) <strong class="jxr_keyword">throws</strong> Exception { |
| <a name="209" href="#209">209</a> <strong class="jxr_keyword">super</strong>.dispose(session); |
| <a name="210" href="#210">210</a> session.removeAttribute(STATE); |
| <a name="211" href="#211">211</a> } |
| <a name="212" href="#212">212</a> |
| <a name="213" href="#213">213</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolEncoder.html">State</a> getState(<a href="../../../../../../org/apache/mina/core/session/IoSession.html">IoSession</a> session) <strong class="jxr_keyword">throws</strong> Exception { |
| <a name="214" href="#214">214</a> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolEncoder.html">State</a> state = (State) session.getAttribute(STATE); |
| <a name="215" href="#215">215</a> |
| <a name="216" href="#216">216</a> <strong class="jxr_keyword">if</strong> (state == <strong class="jxr_keyword">null</strong>) { |
| <a name="217" href="#217">217</a> state = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolEncoder.html">State</a>(); |
| <a name="218" href="#218">218</a> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolEncoder.html">State</a> oldState = (State) session.setAttributeIfAbsent(STATE, state); |
| <a name="219" href="#219">219</a> |
| <a name="220" href="#220">220</a> <strong class="jxr_keyword">if</strong> (oldState != <strong class="jxr_keyword">null</strong>) { |
| <a name="221" href="#221">221</a> state = oldState; |
| <a name="222" href="#222">222</a> } |
| <a name="223" href="#223">223</a> } |
| <a name="224" href="#224">224</a> |
| <a name="225" href="#225">225</a> <strong class="jxr_keyword">return</strong> state; |
| <a name="226" href="#226">226</a> } |
| <a name="227" href="#227">227</a> |
| <a name="228" href="#228">228</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolEncoder.html">State</a> { |
| <a name="229" href="#229">229</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoder.html">MessageDecoder</a>[] decoders; |
| <a name="230" href="#230">230</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoder.html">MessageDecoder</a> currentDecoder; |
| <a name="231" href="#231">231</a> |
| <a name="232" href="#232">232</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolEncoder.html">State</a>() <strong class="jxr_keyword">throws</strong> Exception { |
| <a name="233" href="#233">233</a> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoderFactory.html">MessageDecoderFactory</a>[] decoderFactories = DemuxingProtocolDecoder.<strong class="jxr_keyword">this</strong>.decoderFactories; |
| <a name="234" href="#234">234</a> decoders = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoder.html">MessageDecoder</a>[decoderFactories.length]; |
| <a name="235" href="#235">235</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = decoderFactories.length - 1; i >= 0; i--) { |
| <a name="236" href="#236">236</a> decoders[i] = decoderFactories[i].getDecoder(); |
| <a name="237" href="#237">237</a> } |
| <a name="238" href="#238">238</a> } |
| <a name="239" href="#239">239</a> } |
| <a name="240" href="#240">240</a> |
| <a name="241" href="#241">241</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolDecoder.html">SingletonMessageDecoderFactory</a> implements |
| <a name="242" href="#242">242</a> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoderFactory.html">MessageDecoderFactory</a> { |
| <a name="243" href="#243">243</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoder.html">MessageDecoder</a> decoder; |
| <a name="244" href="#244">244</a> |
| <a name="245" href="#245">245</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolDecoder.html">SingletonMessageDecoderFactory</a>(<a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoder.html">MessageDecoder</a> decoder) { |
| <a name="246" href="#246">246</a> <strong class="jxr_keyword">if</strong> (decoder == <strong class="jxr_keyword">null</strong>) { |
| <a name="247" href="#247">247</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException(<span class="jxr_string">"decoder"</span>); |
| <a name="248" href="#248">248</a> } |
| <a name="249" href="#249">249</a> <strong class="jxr_keyword">this</strong>.decoder = decoder; |
| <a name="250" href="#250">250</a> } |
| <a name="251" href="#251">251</a> |
| <a name="252" href="#252">252</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoder.html">MessageDecoder</a> getDecoder() { |
| <a name="253" href="#253">253</a> <strong class="jxr_keyword">return</strong> decoder; |
| <a name="254" href="#254">254</a> } |
| <a name="255" href="#255">255</a> } |
| <a name="256" href="#256">256</a> |
| <a name="257" href="#257">257</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolDecoder.html">DefaultConstructorMessageDecoderFactory</a> implements |
| <a name="258" href="#258">258</a> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoderFactory.html">MessageDecoderFactory</a> { |
| <a name="259" href="#259">259</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Class<?> decoderClass; |
| <a name="260" href="#260">260</a> |
| <a name="261" href="#261">261</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolDecoder.html">DefaultConstructorMessageDecoderFactory</a>(Class<?> decoderClass) { |
| <a name="262" href="#262">262</a> <strong class="jxr_keyword">if</strong> (decoderClass == <strong class="jxr_keyword">null</strong>) { |
| <a name="263" href="#263">263</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException(<span class="jxr_string">"decoderClass"</span>); |
| <a name="264" href="#264">264</a> } |
| <a name="265" href="#265">265</a> |
| <a name="266" href="#266">266</a> <strong class="jxr_keyword">if</strong> (!MessageDecoder.<strong class="jxr_keyword">class</strong>.isAssignableFrom(decoderClass)) { |
| <a name="267" href="#267">267</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException( |
| <a name="268" href="#268">268</a> <span class="jxr_string">"decoderClass is not assignable to MessageDecoder"</span>); |
| <a name="269" href="#269">269</a> } |
| <a name="270" href="#270">270</a> <strong class="jxr_keyword">this</strong>.decoderClass = decoderClass; |
| <a name="271" href="#271">271</a> } |
| <a name="272" href="#272">272</a> |
| <a name="273" href="#273">273</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoder.html">MessageDecoder</a> getDecoder() <strong class="jxr_keyword">throws</strong> Exception { |
| <a name="274" href="#274">274</a> <strong class="jxr_keyword">return</strong> (MessageDecoder) decoderClass.newInstance(); |
| <a name="275" href="#275">275</a> } |
| <a name="276" href="#276">276</a> } |
| <a name="277" href="#277">277</a> } |
| </pre> |
| <hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/">Maven</a></div></body> |
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