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<div id="overview"><a href="../../../../../../apidocs/org/apache/mina/protocol/codec/DemuxingProtocolCodecFactory.html">View Javadoc</a></div><pre>
<a name="1" href="#1">1</a> <em class="comment">/*</em>
<a name="2" href="#2">2</a> <em class="comment"> * @(#) $Id: DemuxingProtocolCodecFactory.java 264677 2005-08-30 02:44:35Z trustin $</em>
<a name="3" href="#3">3</a> <em class="comment"> *</em>
<a name="4" href="#4">4</a> <em class="comment"> * Copyright 2004 The Apache Software Foundation</em>
<a name="5" href="#5">5</a> <em class="comment"> *</em>
<a name="6" href="#6">6</a> <em class="comment"> * Licensed under the Apache License, Version 2.0 (the "License");</em>
<a name="7" href="#7">7</a> <em class="comment"> * you may not use this file except in compliance with the License.</em>
<a name="8" href="#8">8</a> <em class="comment"> * You may obtain a copy of the License at</em>
<a name="9" href="#9">9</a> <em class="comment"> *</em>
<a name="10" href="#10">10</a> <em class="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="comment"> *</em>
<a name="12" href="#12">12</a> <em class="comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a name="13" href="#13">13</a> <em class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a name="14" href="#14">14</a> <em class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a name="15" href="#15">15</a> <em class="comment"> * See the License for the specific language governing permissions and</em>
<a name="16" href="#16">16</a> <em class="comment"> * limitations under the License.</em>
<a name="17" href="#17">17</a> <em class="comment"> *</em>
<a name="18" href="#18">18</a> <em class="comment"> */</em>
<a name="19" href="#19">19</a> <strong>package</strong> <a href="../../../../../org/apache/mina/protocol/codec/package-summary.html">org.apache.mina.protocol.codec</a>;
<a name="20" href="#20">20</a>
<a name="21" href="#21">21</a> <strong>import</strong> java.util.HashSet;
<a name="22" href="#22">22</a> <strong>import</strong> java.util.IdentityHashMap;
<a name="23" href="#23">23</a> <strong>import</strong> java.util.Iterator;
<a name="24" href="#24">24</a> <strong>import</strong> java.util.Map;
<a name="25" href="#25">25</a> <strong>import</strong> java.util.Set;
<a name="26" href="#26">26</a>
<a name="27" href="#27">27</a> <strong>import</strong> org.apache.mina.common.ByteBuffer;
<a name="28" href="#28">28</a> <strong>import</strong> org.apache.mina.protocol.ProtocolCodecFactory;
<a name="29" href="#29">29</a> <strong>import</strong> org.apache.mina.protocol.ProtocolDecoder;
<a name="30" href="#30">30</a> <strong>import</strong> org.apache.mina.protocol.ProtocolDecoderOutput;
<a name="31" href="#31">31</a> <strong>import</strong> org.apache.mina.protocol.ProtocolEncoder;
<a name="32" href="#32">32</a> <strong>import</strong> org.apache.mina.protocol.ProtocolEncoderOutput;
<a name="33" href="#33">33</a> <strong>import</strong> org.apache.mina.protocol.ProtocolSession;
<a name="34" href="#34">34</a> <strong>import</strong> org.apache.mina.protocol.ProtocolViolationException;
<a name="35" href="#35">35</a>
<a name="36" href="#36">36</a> <em>/**<em>*</em></em>
<a name="37" href="#37">37</a> <em> * A composite {@link ProtocolCodecFactory} that consists of multiple</em>
<a name="38" href="#38">38</a> <em> * {@link MessageEncoder}s and {@link MessageDecoder}s.</em>
<a name="39" href="#39">39</a> <em> * {@link ProtocolEncoder} and {@link ProtocolDecoder} this factory</em>
<a name="40" href="#40">40</a> <em> * returns demultiplex incoming messages and buffers to</em>
<a name="41" href="#41">41</a> <em> * appropriate {@link MessageEncoder}s and {@link MessageDecoder}s. </em>
<a name="42" href="#42">42</a> <em> * </em>
<a name="43" href="#43">43</a> <em> * @author The Apache Directory Project (dev@directory.apache.org)</em>
<a name="44" href="#44">44</a> <em> * @author Trustin Lee (trustin@apache.org)</em>
<a name="45" href="#45">45</a> <em> * @version $Rev: 264677 $, $Date: 2005-08-30 11:44:35 +0900 $</em>
<a name="46" href="#46">46</a> <em> * </em>
<a name="47" href="#47">47</a> <em> * @see MessageEncoder</em>
<a name="48" href="#48">48</a> <em> * @see MessageDecoder</em>
<a name="49" href="#49">49</a> <em> */</em>
<a name="50" href="#50">50</a> <strong>public</strong> <strong>class</strong> <a href="../../../../../org/apache/mina/protocol/codec/DemuxingProtocolCodecFactory.html">DemuxingProtocolCodecFactory</a> implements <a href="../../../../../org/apache/mina/protocol/ProtocolCodecFactory.html">ProtocolCodecFactory</a> {
<a name="51" href="#51">51</a>
<a name="52" href="#52">52</a> <strong>private</strong> <a href="../../../../../org/apache/mina/protocol/codec/MessageDecoderFactory.html">MessageDecoderFactory</a>[] decoderFactories = <strong>new</strong> <a href="../../../../../org/apache/mina/protocol/codec/MessageDecoderFactory.html">MessageDecoderFactory</a>[0];
<a name="53" href="#53">53</a> <strong>private</strong> <a href="../../../../../org/apache/mina/protocol/codec/MessageEncoderFactory.html">MessageEncoderFactory</a>[] encoderFactories = <strong>new</strong> <a href="../../../../../org/apache/mina/protocol/codec/MessageEncoderFactory.html">MessageEncoderFactory</a>[0];
<a name="54" href="#54">54</a>
<a name="55" href="#55">55</a> <strong>public</strong> <a href="../../../../../org/apache/mina/protocol/codec/DemuxingProtocolCodecFactory.html">DemuxingProtocolCodecFactory</a>()
<a name="56" href="#56">56</a> {
<a name="57" href="#57">57</a> }
<a name="58" href="#58">58</a>
<a name="59" href="#59">59</a> <strong>public</strong> <strong>void</strong> register( Class encoderOrDecoderClass )
<a name="60" href="#60">60</a> {
<a name="61" href="#61">61</a> <strong>if</strong>( encoderOrDecoderClass == <strong>null</strong> )
<a name="62" href="#62">62</a> {
<a name="63" href="#63">63</a> <strong>throw</strong> <strong>new</strong> NullPointerException( <span class="string">"encoderOrDecoderClass"</span> );
<a name="64" href="#64">64</a> }
<a name="65" href="#65">65</a>
<a name="66" href="#66">66</a> <strong>boolean</strong> registered = false;
<a name="67" href="#67">67</a> <strong>if</strong>( MessageEncoder.<strong>class</strong>.isAssignableFrom( encoderOrDecoderClass ) )
<a name="68" href="#68">68</a> {
<a name="69" href="#69">69</a> register( <strong>new</strong> DefaultConstructorMessageEncoderFactory( encoderOrDecoderClass ) );
<a name="70" href="#70">70</a> registered = <strong>true</strong>;
<a name="71" href="#71">71</a> }
<a name="72" href="#72">72</a>
<a name="73" href="#73">73</a> <strong>if</strong>( MessageDecoder.<strong>class</strong>.isAssignableFrom( encoderOrDecoderClass ) )
<a name="74" href="#74">74</a> {
<a name="75" href="#75">75</a> register( <strong>new</strong> DefaultConstructorMessageDecoderFactory( encoderOrDecoderClass ) );
<a name="76" href="#76">76</a> registered = <strong>true</strong>;
<a name="77" href="#77">77</a> }
<a name="78" href="#78">78</a>
<a name="79" href="#79">79</a> <strong>if</strong>( !registered )
<a name="80" href="#80">80</a> {
<a name="81" href="#81">81</a> <strong>throw</strong> <strong>new</strong> IllegalArgumentException( <span class="string">"Unregisterable type: "</span> + encoderOrDecoderClass );
<a name="82" href="#82">82</a> }
<a name="83" href="#83">83</a> }
<a name="84" href="#84">84</a>
<a name="85" href="#85">85</a> <strong>public</strong> <strong>void</strong> register( MessageEncoder encoder )
<a name="86" href="#86">86</a> {
<a name="87" href="#87">87</a> register( <strong>new</strong> SingletonMessageEncoderFactory( encoder ) );
<a name="88" href="#88">88</a> }
<a name="89" href="#89">89</a>
<a name="90" href="#90">90</a> <strong>public</strong> <strong>void</strong> register( MessageEncoderFactory factory )
<a name="91" href="#91">91</a> {
<a name="92" href="#92">92</a> <strong>if</strong>( factory == <strong>null</strong> )
<a name="93" href="#93">93</a> {
<a name="94" href="#94">94</a> <strong>throw</strong> <strong>new</strong> NullPointerException( <span class="string">"factory"</span> );
<a name="95" href="#95">95</a> }
<a name="96" href="#96">96</a> <a href="../../../../../org/apache/mina/protocol/codec/MessageEncoderFactory.html">MessageEncoderFactory</a>[] encoderFactories = <strong>this</strong>.encoderFactories;
<a name="97" href="#97">97</a> <a href="../../../../../org/apache/mina/protocol/codec/MessageEncoderFactory.html">MessageEncoderFactory</a>[] <strong>new</strong>EncoderFactories = <strong>new</strong> <a href="../../../../../org/apache/mina/protocol/codec/MessageEncoderFactory.html">MessageEncoderFactory</a>[ encoderFactories.length + 1 ];
<a name="98" href="#98">98</a> System.arraycopy( encoderFactories, 0, newEncoderFactories, 0, encoderFactories.length );
<a name="99" href="#99">99</a> newEncoderFactories[ encoderFactories.length ] = factory;
<a name="100" href="#100">100</a> <strong>this</strong>.encoderFactories = newEncoderFactories;
<a name="101" href="#101">101</a> }
<a name="102" href="#102">102</a>
<a name="103" href="#103">103</a> <strong>public</strong> <strong>void</strong> register( MessageDecoder decoder )
<a name="104" href="#104">104</a> {
<a name="105" href="#105">105</a> register( <strong>new</strong> SingletonMessageDecoderFactory( decoder ) );
<a name="106" href="#106">106</a> }
<a name="107" href="#107">107</a>
<a name="108" href="#108">108</a> <strong>public</strong> <strong>void</strong> register( MessageDecoderFactory factory )
<a name="109" href="#109">109</a> {
<a name="110" href="#110">110</a> <strong>if</strong>( factory == <strong>null</strong> )
<a name="111" href="#111">111</a> {
<a name="112" href="#112">112</a> <strong>throw</strong> <strong>new</strong> NullPointerException( <span class="string">"factory"</span> );
<a name="113" href="#113">113</a> }
<a name="114" href="#114">114</a> <a href="../../../../../org/apache/mina/protocol/codec/MessageDecoderFactory.html">MessageDecoderFactory</a>[] decoderFactories = <strong>this</strong>.decoderFactories;
<a name="115" href="#115">115</a> <a href="../../../../../org/apache/mina/protocol/codec/MessageDecoderFactory.html">MessageDecoderFactory</a>[] <strong>new</strong>DecoderFactories = <strong>new</strong> <a href="../../../../../org/apache/mina/protocol/codec/MessageDecoderFactory.html">MessageDecoderFactory</a>[ decoderFactories.length + 1 ];
<a name="116" href="#116">116</a> System.arraycopy( decoderFactories, 0, newDecoderFactories, 0, decoderFactories.length );
<a name="117" href="#117">117</a> newDecoderFactories[ decoderFactories.length ] = factory;
<a name="118" href="#118">118</a> <strong>this</strong>.decoderFactories = newDecoderFactories;
<a name="119" href="#119">119</a> }
<a name="120" href="#120">120</a>
<a name="121" href="#121">121</a> <strong>public</strong> <a href="../../../../../org/apache/mina/protocol/ProtocolEncoder.html">ProtocolEncoder</a> newEncoder() {
<a name="122" href="#122">122</a> <strong>return</strong> <strong>new</strong> ProtocolEncoderImpl();
<a name="123" href="#123">123</a> }
<a name="124" href="#124">124</a>
<a name="125" href="#125">125</a> <strong>public</strong> <a href="../../../../../org/apache/mina/protocol/ProtocolDecoder.html">ProtocolDecoder</a> newDecoder() {
<a name="126" href="#126">126</a> <strong>return</strong> <strong>new</strong> ProtocolDecoderImpl();
<a name="127" href="#127">127</a> }
<a name="128" href="#128">128</a>
<a name="129" href="#129">129</a> <strong>private</strong> <strong>class</strong> ProtocolEncoderImpl implements <a href="../../../../../org/apache/mina/protocol/ProtocolEncoder.html">ProtocolEncoder</a>
<a name="130" href="#130">130</a> {
<a name="131" href="#131">131</a> <strong>private</strong> <strong>final</strong> Map encoders = <strong>new</strong> IdentityHashMap();
<a name="132" href="#132">132</a>
<a name="133" href="#133">133</a> <strong>private</strong> ProtocolEncoderImpl()
<a name="134" href="#134">134</a> {
<a name="135" href="#135">135</a> <a href="../../../../../org/apache/mina/protocol/codec/MessageEncoderFactory.html">MessageEncoderFactory</a>[] encoderFactories = DemuxingProtocolCodecFactory.<strong>this</strong>.encoderFactories;
<a name="136" href="#136">136</a> <strong>for</strong>( <strong>int</strong> i = encoderFactories.length - 1; i >= 0; i-- )
<a name="137" href="#137">137</a> {
<a name="138" href="#138">138</a> <a href="../../../../../org/apache/mina/protocol/codec/MessageEncoder.html">MessageEncoder</a> encoder = encoderFactories[ i ].newEncoder();
<a name="139" href="#139">139</a> Iterator it = encoder.getMessageTypes().iterator();
<a name="140" href="#140">140</a> <strong>while</strong>( it.hasNext() )
<a name="141" href="#141">141</a> {
<a name="142" href="#142">142</a> Class type = ( Class ) it.next();
<a name="143" href="#143">143</a> encoders.put( type, encoder );
<a name="144" href="#144">144</a> }
<a name="145" href="#145">145</a> }
<a name="146" href="#146">146</a> }
<a name="147" href="#147">147</a>
<a name="148" href="#148">148</a> <strong>public</strong> <strong>void</strong> encode( ProtocolSession session, Object message,
<a name="149" href="#149">149</a> <a href="../../../../../org/apache/mina/protocol/ProtocolEncoderOutput.html">ProtocolEncoderOutput</a> out ) throws ProtocolViolationException
<a name="150" href="#150">150</a> {
<a name="151" href="#151">151</a> Class type = message.getClass();
<a name="152" href="#152">152</a> <a href="../../../../../org/apache/mina/protocol/codec/MessageEncoder.html">MessageEncoder</a> encoder = findEncoder( type );
<a name="153" href="#153">153</a> <strong>if</strong>( encoder == <strong>null</strong> )
<a name="154" href="#154">154</a> {
<a name="155" href="#155">155</a> <strong>throw</strong> <strong>new</strong> <a href="../../../../../org/apache/mina/protocol/ProtocolViolationException.html">ProtocolViolationException</a>( <span class="string">"Unexpected message type: "</span> + type );
<a name="156" href="#156">156</a> }
<a name="157" href="#157">157</a>
<a name="158" href="#158">158</a> encoder.encode( session, message, out );
<a name="159" href="#159">159</a> }
<a name="160" href="#160">160</a>
<a name="161" href="#161">161</a> <strong>private</strong> <a href="../../../../../org/apache/mina/protocol/codec/MessageEncoder.html">MessageEncoder</a> findEncoder( Class type )
<a name="162" href="#162">162</a> {
<a name="163" href="#163">163</a> <a href="../../../../../org/apache/mina/protocol/codec/MessageEncoder.html">MessageEncoder</a> encoder = ( MessageEncoder ) encoders.get( type );
<a name="164" href="#164">164</a> <strong>if</strong>( encoder == <strong>null</strong> )
<a name="165" href="#165">165</a> {
<a name="166" href="#166">166</a> encoder = findEncoder( type, <strong>new</strong> HashSet() );
<a name="167" href="#167">167</a> }
<a name="168" href="#168">168</a>
<a name="169" href="#169">169</a> <strong>return</strong> encoder;
<a name="170" href="#170">170</a> }
<a name="171" href="#171">171</a>
<a name="172" href="#172">172</a> <strong>private</strong> <a href="../../../../../org/apache/mina/protocol/codec/MessageEncoder.html">MessageEncoder</a> findEncoder( Class type, Set triedClasses )
<a name="173" href="#173">173</a> {
<a name="174" href="#174">174</a> <a href="../../../../../org/apache/mina/protocol/codec/MessageEncoder.html">MessageEncoder</a> encoder;
<a name="175" href="#175">175</a>
<a name="176" href="#176">176</a> <strong>if</strong>( triedClasses.contains( type ) )
<a name="177" href="#177">177</a> <strong>return</strong> <strong>null</strong>;
<a name="178" href="#178">178</a> triedClasses.add( type );
<a name="179" href="#179">179</a>
<a name="180" href="#180">180</a> encoder = ( MessageEncoder ) encoders.get( type );
<a name="181" href="#181">181</a> <strong>if</strong>( encoder == <strong>null</strong> )
<a name="182" href="#182">182</a> {
<a name="183" href="#183">183</a> encoder = findEncoder( type, triedClasses );
<a name="184" href="#184">184</a> <strong>if</strong>( encoder != <strong>null</strong> )
<a name="185" href="#185">185</a> <strong>return</strong> encoder;
<a name="186" href="#186">186</a>
<a name="187" href="#187">187</a> Class[] interfaces = type.getInterfaces();
<a name="188" href="#188">188</a> <strong>for</strong>( <strong>int</strong> i = 0; i &lt; <strong>int</strong>erfaces.length; i ++ )
<a name="189" href="#189">189</a> {
<a name="190" href="#190">190</a> encoder = findEncoder( interfaces[ i ], triedClasses );
<a name="191" href="#191">191</a> <strong>if</strong>( encoder != <strong>null</strong> )
<a name="192" href="#192">192</a> <strong>return</strong> encoder;
<a name="193" href="#193">193</a> }
<a name="194" href="#194">194</a>
<a name="195" href="#195">195</a> <strong>return</strong> <strong>null</strong>;
<a name="196" href="#196">196</a> }
<a name="197" href="#197">197</a> <strong>else</strong>
<a name="198" href="#198">198</a> <strong>return</strong> encoder;
<a name="199" href="#199">199</a> }
<a name="200" href="#200">200</a> }
<a name="201" href="#201">201</a>
<a name="202" href="#202">202</a> <strong>private</strong> <strong>class</strong> ProtocolDecoderImpl <strong>extends</strong> <a href="../../../../../org/apache/mina/protocol/codec/CumulativeProtocolDecoder.html">CumulativeProtocolDecoder</a>
<a name="203" href="#203">203</a> {
<a name="204" href="#204">204</a> <strong>private</strong> <strong>final</strong> <a href="../../../../../org/apache/mina/protocol/codec/MessageDecoder.html">MessageDecoder</a>[] decoders;
<a name="205" href="#205">205</a> <strong>private</strong> <a href="../../../../../org/apache/mina/protocol/codec/MessageDecoder.html">MessageDecoder</a> currentDecoder;
<a name="206" href="#206">206</a>
<a name="207" href="#207">207</a> <strong>protected</strong> ProtocolDecoderImpl()
<a name="208" href="#208">208</a> {
<a name="209" href="#209">209</a> <strong>super</strong>( 16 );
<a name="210" href="#210">210</a>
<a name="211" href="#211">211</a> <a href="../../../../../org/apache/mina/protocol/codec/MessageDecoderFactory.html">MessageDecoderFactory</a>[] decoderFactories = DemuxingProtocolCodecFactory.<strong>this</strong>.decoderFactories;
<a name="212" href="#212">212</a> decoders = <strong>new</strong> <a href="../../../../../org/apache/mina/protocol/codec/MessageDecoder.html">MessageDecoder</a>[ decoderFactories.length ];
<a name="213" href="#213">213</a> <strong>for</strong>( <strong>int</strong> i = decoderFactories.length - 1; i >= 0; i-- )
<a name="214" href="#214">214</a> {
<a name="215" href="#215">215</a> decoders[ i ] = decoderFactories[ i ].newDecoder();
<a name="216" href="#216">216</a> }
<a name="217" href="#217">217</a> }
<a name="218" href="#218">218</a>
<a name="219" href="#219">219</a> <strong>protected</strong> <strong>boolean</strong> doDecode( ProtocolSession session, ByteBuffer in,
<a name="220" href="#220">220</a> <a href="../../../../../org/apache/mina/protocol/ProtocolDecoderOutput.html">ProtocolDecoderOutput</a> out) throws ProtocolViolationException
<a name="221" href="#221">221</a> {
<a name="222" href="#222">222</a> <strong>if</strong>( currentDecoder == <strong>null</strong> )
<a name="223" href="#223">223</a> {
<a name="224" href="#224">224</a> <a href="../../../../../org/apache/mina/protocol/codec/MessageDecoder.html">MessageDecoder</a>[] decoders = <strong>this</strong>.decoders;
<a name="225" href="#225">225</a> <strong>int</strong> undecodables = 0;
<a name="226" href="#226">226</a> <strong>for</strong>( <strong>int</strong> i = decoders.length - 1; i >= 0; i -- )
<a name="227" href="#227">227</a> {
<a name="228" href="#228">228</a> <a href="../../../../../org/apache/mina/protocol/codec/MessageDecoder.html">MessageDecoder</a> decoder = decoders[i];
<a name="229" href="#229">229</a> <strong>int</strong> limit = in.limit();
<a name="230" href="#230">230</a> <strong>int</strong> pos = in.position();
<a name="231" href="#231">231</a>
<a name="232" href="#232">232</a> <a href="../../../../../org/apache/mina/protocol/codec/MessageDecoderResult.html">MessageDecoderResult</a> result;
<a name="233" href="#233">233</a> <strong>try</strong>
<a name="234" href="#234">234</a> {
<a name="235" href="#235">235</a> result = decoder.decodable( session, in );
<a name="236" href="#236">236</a> }
<a name="237" href="#237">237</a> <strong>finally</strong>
<a name="238" href="#238">238</a> {
<a name="239" href="#239">239</a> in.position( pos );
<a name="240" href="#240">240</a> in.limit( limit );
<a name="241" href="#241">241</a> }
<a name="242" href="#242">242</a>
<a name="243" href="#243">243</a> <strong>if</strong>( result == MessageDecoder.OK )
<a name="244" href="#244">244</a> {
<a name="245" href="#245">245</a> currentDecoder = decoder;
<a name="246" href="#246">246</a> <strong>break</strong>;
<a name="247" href="#247">247</a> }
<a name="248" href="#248">248</a> <strong>else</strong> <strong>if</strong>( result == MessageDecoder.NOT_OK )
<a name="249" href="#249">249</a> {
<a name="250" href="#250">250</a> undecodables ++;
<a name="251" href="#251">251</a> }
<a name="252" href="#252">252</a> <strong>else</strong> <strong>if</strong>( result != MessageDecoder.NEED_DATA )
<a name="253" href="#253">253</a> {
<a name="254" href="#254">254</a> <strong>throw</strong> <strong>new</strong> IllegalStateException( <span class="string">"Unexpected decode result (see your decodable()): "</span> + result );
<a name="255" href="#255">255</a> }
<a name="256" href="#256">256</a> }
<a name="257" href="#257">257</a>
<a name="258" href="#258">258</a> <strong>if</strong>( undecodables == decoders.length )
<a name="259" href="#259">259</a> {
<a name="260" href="#260">260</a> <em class="comment">// Throw an exception if all decoders cannot decode data.</em>
<a name="261" href="#261">261</a> in.position( in.limit() ); <em class="comment">// Skip data</em>
<a name="262" href="#262">262</a> <strong>throw</strong> <strong>new</strong> <a href="../../../../../org/apache/mina/protocol/ProtocolViolationException.html">ProtocolViolationException</a>(
<a name="263" href="#263">263</a> <span class="string">"No appropriate message decoder: "</span> + in.getHexDump() );
<a name="264" href="#264">264</a> }
<a name="265" href="#265">265</a>
<a name="266" href="#266">266</a> <strong>if</strong>( currentDecoder == <strong>null</strong> )
<a name="267" href="#267">267</a> {
<a name="268" href="#268">268</a> <em class="comment">// Decoder is not determined yet (i.e. we need more data)</em>
<a name="269" href="#269">269</a> <strong>return</strong> false;
<a name="270" href="#270">270</a> }
<a name="271" href="#271">271</a> }
<a name="272" href="#272">272</a>
<a name="273" href="#273">273</a> <a href="../../../../../org/apache/mina/protocol/codec/MessageDecoderResult.html">MessageDecoderResult</a> result = currentDecoder.decode( session, in, out );
<a name="274" href="#274">274</a> <strong>if</strong>( result == MessageDecoder.OK )
<a name="275" href="#275">275</a> {
<a name="276" href="#276">276</a> currentDecoder = <strong>null</strong>;
<a name="277" href="#277">277</a> <strong>return</strong> <strong>true</strong>;
<a name="278" href="#278">278</a> }
<a name="279" href="#279">279</a> <strong>else</strong> <strong>if</strong>( result == MessageDecoder.NEED_DATA )
<a name="280" href="#280">280</a> {
<a name="281" href="#281">281</a> <strong>return</strong> false;
<a name="282" href="#282">282</a> }
<a name="283" href="#283">283</a> <strong>else</strong> <strong>if</strong>( result == MessageDecoder.NOT_OK )
<a name="284" href="#284">284</a> {
<a name="285" href="#285">285</a> <strong>throw</strong> <strong>new</strong> <a href="../../../../../org/apache/mina/protocol/ProtocolViolationException.html">ProtocolViolationException</a>( <span class="string">"Message decoder returned NOT_OK."</span> );
<a name="286" href="#286">286</a> }
<a name="287" href="#287">287</a> <strong>else</strong>
<a name="288" href="#288">288</a> {
<a name="289" href="#289">289</a> <strong>throw</strong> <strong>new</strong> IllegalStateException( <span class="string">"Unexpected decode result (see your decode()): "</span> + result );
<a name="290" href="#290">290</a> }
<a name="291" href="#291">291</a> }
<a name="292" href="#292">292</a> }
<a name="293" href="#293">293</a>
<a name="294" href="#294">294</a> <strong>private</strong> <strong>static</strong> <strong>class</strong> SingletonMessageEncoderFactory implements <a href="../../../../../org/apache/mina/protocol/codec/MessageEncoderFactory.html">MessageEncoderFactory</a>
<a name="295" href="#295">295</a> {
<a name="296" href="#296">296</a> <strong>private</strong> <strong>final</strong> <a href="../../../../../org/apache/mina/protocol/codec/MessageEncoder.html">MessageEncoder</a> encoder;
<a name="297" href="#297">297</a>
<a name="298" href="#298">298</a> <strong>private</strong> SingletonMessageEncoderFactory( MessageEncoder encoder )
<a name="299" href="#299">299</a> {
<a name="300" href="#300">300</a> <strong>if</strong>( encoder == <strong>null</strong> )
<a name="301" href="#301">301</a> {
<a name="302" href="#302">302</a> <strong>throw</strong> <strong>new</strong> NullPointerException( <span class="string">"encoder"</span> );
<a name="303" href="#303">303</a> }
<a name="304" href="#304">304</a> <strong>this</strong>.encoder = encoder;
<a name="305" href="#305">305</a> }
<a name="306" href="#306">306</a>
<a name="307" href="#307">307</a> <strong>public</strong> <a href="../../../../../org/apache/mina/protocol/codec/MessageEncoder.html">MessageEncoder</a> newEncoder()
<a name="308" href="#308">308</a> {
<a name="309" href="#309">309</a> <strong>return</strong> encoder;
<a name="310" href="#310">310</a> }
<a name="311" href="#311">311</a> }
<a name="312" href="#312">312</a>
<a name="313" href="#313">313</a> <strong>private</strong> <strong>static</strong> <strong>class</strong> SingletonMessageDecoderFactory implements <a href="../../../../../org/apache/mina/protocol/codec/MessageDecoderFactory.html">MessageDecoderFactory</a>
<a name="314" href="#314">314</a> {
<a name="315" href="#315">315</a> <strong>private</strong> <strong>final</strong> <a href="../../../../../org/apache/mina/protocol/codec/MessageDecoder.html">MessageDecoder</a> decoder;
<a name="316" href="#316">316</a>
<a name="317" href="#317">317</a> <strong>private</strong> SingletonMessageDecoderFactory( MessageDecoder decoder )
<a name="318" href="#318">318</a> {
<a name="319" href="#319">319</a> <strong>if</strong>( decoder == <strong>null</strong> )
<a name="320" href="#320">320</a> {
<a name="321" href="#321">321</a> <strong>throw</strong> <strong>new</strong> NullPointerException( <span class="string">"decoder"</span> );
<a name="322" href="#322">322</a> }
<a name="323" href="#323">323</a> <strong>this</strong>.decoder = decoder;
<a name="324" href="#324">324</a> }
<a name="325" href="#325">325</a>
<a name="326" href="#326">326</a> <strong>public</strong> <a href="../../../../../org/apache/mina/protocol/codec/MessageDecoder.html">MessageDecoder</a> newDecoder()
<a name="327" href="#327">327</a> {
<a name="328" href="#328">328</a> <strong>return</strong> decoder;
<a name="329" href="#329">329</a> }
<a name="330" href="#330">330</a> }
<a name="331" href="#331">331</a>
<a name="332" href="#332">332</a> <strong>private</strong> <strong>static</strong> <strong>class</strong> DefaultConstructorMessageEncoderFactory implements <a href="../../../../../org/apache/mina/protocol/codec/MessageEncoderFactory.html">MessageEncoderFactory</a>
<a name="333" href="#333">333</a> {
<a name="334" href="#334">334</a> <strong>private</strong> <strong>final</strong> Class encoderClass;
<a name="335" href="#335">335</a>
<a name="336" href="#336">336</a> <strong>private</strong> DefaultConstructorMessageEncoderFactory( Class encoderClass )
<a name="337" href="#337">337</a> {
<a name="338" href="#338">338</a> <strong>if</strong>( encoderClass == <strong>null</strong> )
<a name="339" href="#339">339</a> {
<a name="340" href="#340">340</a> <strong>throw</strong> <strong>new</strong> NullPointerException( <span class="string">"encoderClass"</span> );
<a name="341" href="#341">341</a> }
<a name="342" href="#342">342</a>
<a name="343" href="#343">343</a> <strong>if</strong>( !MessageEncoder.<strong>class</strong>.isAssignableFrom( encoderClass ) )
<a name="344" href="#344">344</a> {
<a name="345" href="#345">345</a> <strong>throw</strong> <strong>new</strong> IllegalArgumentException( <span class="string">"encoderClass is not assignable to MessageEncoder"</span> );
<a name="346" href="#346">346</a> }
<a name="347" href="#347">347</a> <strong>this</strong>.encoderClass = encoderClass;
<a name="348" href="#348">348</a> }
<a name="349" href="#349">349</a>
<a name="350" href="#350">350</a> <strong>public</strong> <a href="../../../../../org/apache/mina/protocol/codec/MessageEncoder.html">MessageEncoder</a> newEncoder()
<a name="351" href="#351">351</a> {
<a name="352" href="#352">352</a> <strong>try</strong>
<a name="353" href="#353">353</a> {
<a name="354" href="#354">354</a> <strong>return</strong> ( MessageEncoder ) encoderClass.newInstance();
<a name="355" href="#355">355</a> }
<a name="356" href="#356">356</a> <strong>catch</strong>( Exception e )
<a name="357" href="#357">357</a> {
<a name="358" href="#358">358</a> <strong>throw</strong> <strong>new</strong> RuntimeException( <span class="string">"Failed to create a new instance of "</span> + encoderClass, e );
<a name="359" href="#359">359</a> }
<a name="360" href="#360">360</a> }
<a name="361" href="#361">361</a> }
<a name="362" href="#362">362</a>
<a name="363" href="#363">363</a> <strong>private</strong> <strong>static</strong> <strong>class</strong> DefaultConstructorMessageDecoderFactory implements <a href="../../../../../org/apache/mina/protocol/codec/MessageDecoderFactory.html">MessageDecoderFactory</a>
<a name="364" href="#364">364</a> {
<a name="365" href="#365">365</a> <strong>private</strong> <strong>final</strong> Class decoderClass;
<a name="366" href="#366">366</a>
<a name="367" href="#367">367</a> <strong>private</strong> DefaultConstructorMessageDecoderFactory( Class decoderClass )
<a name="368" href="#368">368</a> {
<a name="369" href="#369">369</a> <strong>if</strong>( decoderClass == <strong>null</strong> )
<a name="370" href="#370">370</a> {
<a name="371" href="#371">371</a> <strong>throw</strong> <strong>new</strong> NullPointerException( <span class="string">"decoderClass"</span> );
<a name="372" href="#372">372</a> }
<a name="373" href="#373">373</a>
<a name="374" href="#374">374</a> <strong>if</strong>( !MessageDecoder.<strong>class</strong>.isAssignableFrom( decoderClass ) )
<a name="375" href="#375">375</a> {
<a name="376" href="#376">376</a> <strong>throw</strong> <strong>new</strong> IllegalArgumentException( <span class="string">"decoderClass is not assignable to MessageDecoder"</span> );
<a name="377" href="#377">377</a> }
<a name="378" href="#378">378</a> <strong>this</strong>.decoderClass = decoderClass;
<a name="379" href="#379">379</a> }
<a name="380" href="#380">380</a>
<a name="381" href="#381">381</a> <strong>public</strong> <a href="../../../../../org/apache/mina/protocol/codec/MessageDecoder.html">MessageDecoder</a> newDecoder()
<a name="382" href="#382">382</a> {
<a name="383" href="#383">383</a> <strong>try</strong>
<a name="384" href="#384">384</a> {
<a name="385" href="#385">385</a> <strong>return</strong> ( MessageDecoder ) decoderClass.newInstance();
<a name="386" href="#386">386</a> }
<a name="387" href="#387">387</a> <strong>catch</strong>( Exception e )
<a name="388" href="#388">388</a> {
<a name="389" href="#389">389</a> <strong>throw</strong> <strong>new</strong> RuntimeException( <span class="string">"Failed to create a new instance of "</span> + decoderClass, e );
<a name="390" href="#390">390</a> }
<a name="391" href="#391">391</a> }
<a name="392" href="#392">392</a> }
<a name="393" href="#393">393</a> }
</pre>
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