demuxingprotocoldecoder.html

MINA+API 关于MINA的API

<a name="183" href="#183">183</a>         } <strong class="jxr_keyword">else</strong> {
<a name="184" href="#184">184</a>             state.currentDecoder = <strong class="jxr_keyword">null</strong>;
<a name="185" href="#185">185</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
<a name="186" href="#186">186</a>                     <span class="jxr_string">"Unexpected decode result (see your decode()): "</span>
<a name="187" href="#187">187</a>                             + result);
<a name="188" href="#188">188</a>         }
<a name="189" href="#189">189</a>     }
<a name="190" href="#190">190</a> 
<a name="191" href="#191">191</a>     @Override
<a name="192" href="#192">192</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> finishDecode(<a href="../../../../../../org/apache/mina/common/IoSession.html">IoSession</a> session, <a href="../../../../../../org/apache/mina/filter/codec/ProtocolDecoderOutput.html">ProtocolDecoderOutput</a> out)
<a name="193" href="#193">193</a>             <strong class="jxr_keyword">throws</strong> Exception {
<a name="194" href="#194">194</a>         <strong class="jxr_keyword">super</strong>.finishDecode(session, out);
<a name="195" href="#195">195</a>         <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolDecoder.html">State</a> state = getState(session);
<a name="196" href="#196">196</a>         <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoder.html">MessageDecoder</a> currentDecoder = state.currentDecoder;
<a name="197" href="#197">197</a>         <strong class="jxr_keyword">if</strong> (currentDecoder == <strong class="jxr_keyword">null</strong>) {
<a name="198" href="#198">198</a>             <strong class="jxr_keyword">return</strong>;
<a name="199" href="#199">199</a>         }
<a name="200" href="#200">200</a> 
<a name="201" href="#201">201</a>         currentDecoder.finishDecode(session, out);
<a name="202" href="#202">202</a>     }
<a name="203" href="#203">203</a> 
<a name="204" href="#204">204</a>     @Override
<a name="205" href="#205">205</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> dispose(<a href="../../../../../../org/apache/mina/common/IoSession.html">IoSession</a> session) <strong class="jxr_keyword">throws</strong> Exception {
<a name="206" href="#206">206</a>         <strong class="jxr_keyword">super</strong>.dispose(session);
<a name="207" href="#207">207</a>         session.removeAttribute(STATE);
<a name="208" href="#208">208</a>     }
<a name="209" href="#209">209</a>     
<a name="210" href="#210">210</a>     <strong class="jxr_keyword">private</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolDecoder.html">State</a> getState(<a href="../../../../../../org/apache/mina/common/IoSession.html">IoSession</a> session) <strong class="jxr_keyword">throws</strong> Exception {
<a name="211" href="#211">211</a>         <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolDecoder.html">State</a> state = (State) session.getAttribute(STATE);
<a name="212" href="#212">212</a>         <strong class="jxr_keyword">if</strong> (state == <strong class="jxr_keyword">null</strong>) {
<a name="213" href="#213">213</a>             state = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolDecoder.html">State</a>();
<a name="214" href="#214">214</a>             <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolDecoder.html">State</a> oldState = (State) session.setAttributeIfAbsent(STATE, state);
<a name="215" href="#215">215</a>             <strong class="jxr_keyword">if</strong> (oldState != <strong class="jxr_keyword">null</strong>) {
<a name="216" href="#216">216</a>                 state = oldState;
<a name="217" href="#217">217</a>             }
<a name="218" href="#218">218</a>         }
<a name="219" href="#219">219</a>         <strong class="jxr_keyword">return</strong> state;
<a name="220" href="#220">220</a>     }
<a name="221" href="#221">221</a>     
<a name="222" href="#222">222</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolDecoder.html">State</a> {
<a name="223" href="#223">223</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="224" href="#224">224</a>         <strong class="jxr_keyword">private</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoder.html">MessageDecoder</a> currentDecoder;
<a name="225" href="#225">225</a>         
<a name="226" href="#226">226</a>         <strong class="jxr_keyword">private</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolDecoder.html">State</a>() <strong class="jxr_keyword">throws</strong> Exception {
<a name="227" href="#227">227</a>             <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoderFactory.html">MessageDecoderFactory</a>[] decoderFactories = DemuxingProtocolDecoder.<strong class="jxr_keyword">this</strong>.decoderFactories;
<a name="228" href="#228">228</a>             decoders = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoder.html">MessageDecoder</a>[decoderFactories.length];
<a name="229" href="#229">229</a>             <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = decoderFactories.length - 1; i &gt;= 0; i--) {
<a name="230" href="#230">230</a>                 decoders[i] = decoderFactories[i].getDecoder();
<a name="231" href="#231">231</a>             }
<a name="232" href="#232">232</a>         }
<a name="233" href="#233">233</a>     }
<a name="234" href="#234">234</a> 
<a name="235" href="#235">235</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="236" href="#236">236</a>             <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoderFactory.html">MessageDecoderFactory</a> {
<a name="237" href="#237">237</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="238" href="#238">238</a> 
<a name="239" href="#239">239</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="240" href="#240">240</a>             <strong class="jxr_keyword">if</strong> (decoder == <strong class="jxr_keyword">null</strong>) {
<a name="241" href="#241">241</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException(<span class="jxr_string">"decoder"</span>);
<a name="242" href="#242">242</a>             }
<a name="243" href="#243">243</a>             <strong class="jxr_keyword">this</strong>.decoder = decoder;
<a name="244" href="#244">244</a>         }
<a name="245" href="#245">245</a> 
<a name="246" href="#246">246</a>         <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoder.html">MessageDecoder</a> getDecoder() {
<a name="247" href="#247">247</a>             <strong class="jxr_keyword">return</strong> decoder;
<a name="248" href="#248">248</a>         }
<a name="249" href="#249">249</a>     }
<a name="250" href="#250">250</a> 
<a name="251" href="#251">251</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="252" href="#252">252</a>             <a href="../../../../../../org/apache/mina/filter/codec/demux/MessageDecoderFactory.html">MessageDecoderFactory</a> {
<a name="253" href="#253">253</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Class&lt;?&gt; decoderClass;
<a name="254" href="#254">254</a> 
<a name="255" href="#255">255</a>         <strong class="jxr_keyword">private</strong> <a href="../../../../../../org/apache/mina/filter/codec/demux/DemuxingProtocolDecoder.html">DefaultConstructorMessageDecoderFactory</a>(Class&lt;?&gt; decoderClass) {
<a name="256" href="#256">256</a>             <strong class="jxr_keyword">if</strong> (decoderClass == <strong class="jxr_keyword">null</strong>) {
<a name="257" href="#257">257</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException(<span class="jxr_string">"decoderClass"</span>);
<a name="258" href="#258">258</a>             }
<a name="259" href="#259">259</a> 
<a name="260" href="#260">260</a>             <strong class="jxr_keyword">if</strong> (!MessageDecoder.<strong class="jxr_keyword">class</strong>.isAssignableFrom(decoderClass)) {
<a name="261" href="#261">261</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(
<a name="262" href="#262">262</a>                         <span class="jxr_string">"decoderClass is not assignable to MessageDecoder"</span>);
<a name="263" href="#263">263</a>             }
<a name="264" href="#264">264</a>             <strong class="jxr_keyword">this</strong>.decoderClass = decoderClass;
<a name="265" href="#265">265</a>         }
<a name="266" href="#266">266</a> 
<a name="267" href="#267">267</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="268" href="#268">268</a>             <strong class="jxr_keyword">return</strong> (MessageDecoder) decoderClass.newInstance();
<a name="269" href="#269">269</a>         }
<a name="270" href="#270">270</a>     }
<a name="271" href="#271">271</a> }
</pre>
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