demuxingiohandler.html

MINA+API 关于MINA的API

<a name="117" href="#117">117</a>         <strong class="jxr_keyword">return</strong> (MessageHandler&lt;? <strong class="jxr_keyword">super</strong> E&gt;) receivedMessageHandlers.put(type, handler);
<a name="118" href="#118">118</a>     }
<a name="119" href="#119">119</a> 
<a name="120" href="#120">120</a>     <em class="jxr_javadoccomment">/**</em>
<a name="121" href="#121">121</a> <em class="jxr_javadoccomment">     * Deregisters a {@link MessageHandler} that handles the received messages</em>
<a name="122" href="#122">122</a> <em class="jxr_javadoccomment">     * of the specified &lt;code&gt;type&lt;/code&gt;.</em>
<a name="123" href="#123">123</a> <em class="jxr_javadoccomment">     *</em>
<a name="124" href="#124">124</a> <em class="jxr_javadoccomment">     * @return the removed handler if successfully removed.  &lt;tt&gt;null&lt;/tt&gt; otherwise.</em>
<a name="125" href="#125">125</a> <em class="jxr_javadoccomment">     */</em>
<a name="126" href="#126">126</a>     @SuppressWarnings(<span class="jxr_string">"unchecked"</span>)
<a name="127" href="#127">127</a>     <strong class="jxr_keyword">public</strong> &lt;E&gt; MessageHandler&lt;? <strong class="jxr_keyword">super</strong> E&gt; removeReceivedMessageHandler(Class&lt;E&gt; type) {
<a name="128" href="#128">128</a>         receivedMessageHandlerCache.clear();
<a name="129" href="#129">129</a>         <strong class="jxr_keyword">return</strong> (MessageHandler&lt;? <strong class="jxr_keyword">super</strong> E&gt;) receivedMessageHandlers.remove(type);
<a name="130" href="#130">130</a>     }
<a name="131" href="#131">131</a> 
<a name="132" href="#132">132</a>     <em class="jxr_javadoccomment">/**</em>
<a name="133" href="#133">133</a> <em class="jxr_javadoccomment">     * Registers a {@link MessageHandler} that handles the sent messages of the</em>
<a name="134" href="#134">134</a> <em class="jxr_javadoccomment">     * specified &lt;code&gt;type&lt;/code&gt;.</em>
<a name="135" href="#135">135</a> <em class="jxr_javadoccomment">     *</em>
<a name="136" href="#136">136</a> <em class="jxr_javadoccomment">     * @return the old handler if there is already a registered handler for</em>
<a name="137" href="#137">137</a> <em class="jxr_javadoccomment">     *         the specified &lt;tt&gt;type&lt;/tt&gt;.  &lt;tt&gt;null&lt;/tt&gt; otherwise.</em>
<a name="138" href="#138">138</a> <em class="jxr_javadoccomment">     */</em>
<a name="139" href="#139">139</a>     @SuppressWarnings(<span class="jxr_string">"unchecked"</span>)
<a name="140" href="#140">140</a>     <strong class="jxr_keyword">public</strong> &lt;E&gt; MessageHandler&lt;? <strong class="jxr_keyword">super</strong> E&gt; addSentMessageHandler(Class&lt;E&gt; type,
<a name="141" href="#141">141</a>             MessageHandler&lt;? <strong class="jxr_keyword">super</strong> E&gt; handler) {
<a name="142" href="#142">142</a>         sentMessageHandlerCache.clear();
<a name="143" href="#143">143</a>         <strong class="jxr_keyword">return</strong> (MessageHandler&lt;? <strong class="jxr_keyword">super</strong> E&gt;) sentMessageHandlers.put(type, handler);
<a name="144" href="#144">144</a>     }
<a name="145" href="#145">145</a> 
<a name="146" href="#146">146</a>     <em class="jxr_javadoccomment">/**</em>
<a name="147" href="#147">147</a> <em class="jxr_javadoccomment">     * Deregisters a {@link MessageHandler} that handles the sent messages of</em>
<a name="148" href="#148">148</a> <em class="jxr_javadoccomment">     * the specified &lt;code&gt;type&lt;/code&gt;.</em>
<a name="149" href="#149">149</a> <em class="jxr_javadoccomment">     *</em>
<a name="150" href="#150">150</a> <em class="jxr_javadoccomment">     * @return the removed handler if successfully removed.  &lt;tt&gt;null&lt;/tt&gt; otherwise.</em>
<a name="151" href="#151">151</a> <em class="jxr_javadoccomment">     */</em>
<a name="152" href="#152">152</a>     @SuppressWarnings(<span class="jxr_string">"unchecked"</span>)
<a name="153" href="#153">153</a>     <strong class="jxr_keyword">public</strong> &lt;E&gt; MessageHandler&lt;? <strong class="jxr_keyword">super</strong> E&gt; removeSentMessageHandler(Class&lt;E&gt; type) {
<a name="154" href="#154">154</a>         sentMessageHandlerCache.clear();
<a name="155" href="#155">155</a>         <strong class="jxr_keyword">return</strong> (MessageHandler&lt;? <strong class="jxr_keyword">super</strong> E&gt;) sentMessageHandlers.remove(type);
<a name="156" href="#156">156</a>     }
<a name="157" href="#157">157</a>     
<a name="158" href="#158">158</a>     <em class="jxr_javadoccomment">/**</em>
<a name="159" href="#159">159</a> <em class="jxr_javadoccomment">     * Registers a {@link MessageHandler} that receives the messages of</em>
<a name="160" href="#160">160</a> <em class="jxr_javadoccomment">     * the specified &lt;code&gt;type&lt;/code&gt;.</em>
<a name="161" href="#161">161</a> <em class="jxr_javadoccomment">     *</em>
<a name="162" href="#162">162</a> <em class="jxr_javadoccomment">     * @return the old handler if there is already a registered handler for</em>
<a name="163" href="#163">163</a> <em class="jxr_javadoccomment">     *         the specified &lt;tt&gt;type&lt;/tt&gt;.  &lt;tt&gt;null&lt;/tt&gt; otherwise.</em>
<a name="164" href="#164">164</a> <em class="jxr_javadoccomment">     */</em>
<a name="165" href="#165">165</a>     @SuppressWarnings(<span class="jxr_string">"unchecked"</span>)
<a name="166" href="#166">166</a>     <strong class="jxr_keyword">public</strong> &lt;E <strong class="jxr_keyword">extends</strong> Throwable&gt; 
<a name="167" href="#167">167</a>     ExceptionHandler&lt;? <strong class="jxr_keyword">super</strong> E&gt; addExceptionHandler(
<a name="168" href="#168">168</a>             Class&lt;E&gt; type, ExceptionHandler&lt;? <strong class="jxr_keyword">super</strong> E&gt; handler) {
<a name="169" href="#169">169</a>         exceptionHandlerCache.clear();
<a name="170" href="#170">170</a>         <strong class="jxr_keyword">return</strong> (ExceptionHandler&lt;? <strong class="jxr_keyword">super</strong> E&gt;) exceptionHandlers.put(type, handler);
<a name="171" href="#171">171</a>     }
<a name="172" href="#172">172</a> 
<a name="173" href="#173">173</a>     <em class="jxr_javadoccomment">/**</em>
<a name="174" href="#174">174</a> <em class="jxr_javadoccomment">     * Deregisters a {@link MessageHandler} that receives the messages of</em>
<a name="175" href="#175">175</a> <em class="jxr_javadoccomment">     * the specified &lt;code&gt;type&lt;/code&gt;.</em>
<a name="176" href="#176">176</a> <em class="jxr_javadoccomment">     *</em>
<a name="177" href="#177">177</a> <em class="jxr_javadoccomment">     * @return the removed handler if successfully removed.  &lt;tt&gt;null&lt;/tt&gt; otherwise.</em>
<a name="178" href="#178">178</a> <em class="jxr_javadoccomment">     */</em>
<a name="179" href="#179">179</a>     @SuppressWarnings(<span class="jxr_string">"unchecked"</span>)
<a name="180" href="#180">180</a>     <strong class="jxr_keyword">public</strong> &lt;E <strong class="jxr_keyword">extends</strong> Throwable&gt; ExceptionHandler&lt;? <strong class="jxr_keyword">super</strong> E&gt;
<a name="181" href="#181">181</a>     removeExceptionHandler(Class&lt;E&gt; type) {
<a name="182" href="#182">182</a>         exceptionHandlerCache.clear();
<a name="183" href="#183">183</a>         <strong class="jxr_keyword">return</strong> (ExceptionHandler&lt;? <strong class="jxr_keyword">super</strong> E&gt;) exceptionHandlers.remove(type);
<a name="184" href="#184">184</a>     }
<a name="185" href="#185">185</a> 
<a name="186" href="#186">186</a>     <em class="jxr_javadoccomment">/**</em>
<a name="187" href="#187">187</a> <em class="jxr_javadoccomment">     * Returns the {@link MessageHandler} which is registered to process</em>
<a name="188" href="#188">188</a> <em class="jxr_javadoccomment">     * the specified &lt;code&gt;type&lt;/code&gt;.</em>
<a name="189" href="#189">189</a> <em class="jxr_javadoccomment">     */</em>
<a name="190" href="#190">190</a>     @SuppressWarnings(<span class="jxr_string">"unchecked"</span>)
<a name="191" href="#191">191</a>     <strong class="jxr_keyword">public</strong> &lt;E&gt; MessageHandler&lt;? <strong class="jxr_keyword">super</strong> E&gt; getMessageHandler(Class&lt;E&gt; type) {
<a name="192" href="#192">192</a>         <strong class="jxr_keyword">return</strong> (MessageHandler&lt;? <strong class="jxr_keyword">super</strong> E&gt;) receivedMessageHandlers.get(type);
<a name="193" href="#193">193</a>     }
<a name="194" href="#194">194</a> 
<a name="195" href="#195">195</a>     <em class="jxr_javadoccomment">/**</em>
<a name="196" href="#196">196</a> <em class="jxr_javadoccomment">     * Returns the {@link Map} which contains all messageType-{@link MessageHandler}</em>
<a name="197" href="#197">197</a> <em class="jxr_javadoccomment">     * pairs registered to this handler for received messages.</em>
<a name="198" href="#198">198</a> <em class="jxr_javadoccomment">     */</em>
<a name="199" href="#199">199</a>     <strong class="jxr_keyword">public</strong> Map&lt;Class&lt;?&gt;, MessageHandler&lt;?&gt;&gt; getReceivedMessageHandlerMap() {
<a name="200" href="#200">200</a>         <strong class="jxr_keyword">return</strong> Collections.unmodifiableMap(receivedMessageHandlers);
<a name="201" href="#201">201</a>     }
<a name="202" href="#202">202</a> 
<a name="203" href="#203">203</a>     <em class="jxr_javadoccomment">/**</em>
<a name="204" href="#204">204</a> <em class="jxr_javadoccomment">     * Returns the {@link Map} which contains all messageType-{@link MessageHandler}</em>
<a name="205" href="#205">205</a> <em class="jxr_javadoccomment">     * pairs registered to this handler for sent messages.</em>
<a name="206" href="#206">206</a> <em class="jxr_javadoccomment">     */</em>
<a name="207" href="#207">207</a>     <strong class="jxr_keyword">public</strong> Map&lt;Class&lt;?&gt;, MessageHandler&lt;?&gt;&gt; getSentMessageHandlerMap() {
<a name="208" href="#208">208</a>         <strong class="jxr_keyword">return</strong> Collections.unmodifiableMap(sentMessageHandlers);
<a name="209" href="#209">209</a>     }
<a name="210" href="#210">210</a> 
<a name="211" href="#211">211</a>     <em class="jxr_javadoccomment">/**</em>
<a name="212" href="#212">212</a> <em class="jxr_javadoccomment">     * Returns the {@link Map} which contains all messageType-{@link MessageHandler}</em>
<a name="213" href="#213">213</a> <em class="jxr_javadoccomment">     * pairs registered to this handler.</em>
<a name="214" href="#214">214</a> <em class="jxr_javadoccomment">     */</em>
<a name="215" href="#215">215</a>     <strong class="jxr_keyword">public</strong> Map&lt;Class&lt;?&gt;, ExceptionHandler&lt;?&gt;&gt; getExceptionHandlerMap() {
<a name="216" href="#216">216</a>         <strong class="jxr_keyword">return</strong> Collections.unmodifiableMap(exceptionHandlers);
<a name="217" href="#217">217</a>     }
<a name="218" href="#218">218</a> 
<a name="219" href="#219">219</a>     <em class="jxr_javadoccomment">/**</em>
<a name="220" href="#220">220</a> <em class="jxr_javadoccomment">     * Forwards the received events into the appropriate {@link MessageHandler}</em>
<a name="221" href="#221">221</a> <em class="jxr_javadoccomment">     * which is registered by {@link #addReceivedMessageHandler(Class, MessageHandler)}.</em>
<a name="222" href="#222">222</a> <em class="jxr_javadoccomment">     */</em>
<a name="223" href="#223">223</a>     @Override
<a name="224" href="#224">224</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">void</strong> messageReceived(<a href="../../../../../org/apache/mina/common/IoSession.html">IoSession</a> session, Object message)
<a name="225" href="#225">225</a>             <strong class="jxr_keyword">throws</strong> Exception {
<a name="226" href="#226">226</a>         MessageHandler&lt;Object&gt; handler = findReceivedMessageHandler(message.getClass());
<a name="227" href="#227">227</a>         <strong class="jxr_keyword">if</strong> (handler != <strong class="jxr_keyword">null</strong>) {
<a name="228" href="#228">228</a>             handler.handleMessage(session, message);
<a name="229" href="#229">229</a>         } <strong class="jxr_keyword">else</strong> {
<a name="230" href="#230">230</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/mina/common/UnknownMessageTypeException.html">UnknownMessageTypeException</a>(
<a name="231" href="#231">231</a>                     <span class="jxr_string">"No message handler found for message type: "</span> +
<a name="232" href="#232">232</a>                     message.getClass().getSimpleName());
<a name="233" href="#233">233</a>         }
<a name="234" href="#234">234</a>     }
<a name="235" href="#235">235</a> 
<a name="236" href="#236">236</a>     @Override
<a name="237" href="#237">237</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">void</strong> messageSent(<a href="../../../../../org/apache/mina/common/IoSession.html">IoSession</a> session, Object message) <strong class="jxr_keyword">throws</strong> Exception {
<a name="238" href="#238">238</a>         MessageHandler&lt;Object&gt; handler = findSentMessageHandler(message.getClass());
<a name="239" href="#239">239</a>         <strong class="jxr_keyword">if</strong> (handler != <strong class="jxr_keyword">null</strong>) {
<a name="240" href="#240">240</a>             handler.handleMessage(session, message);
<a name="241" href="#241">241</a>         } <strong class="jxr_keyword">else</strong> {
<a name="242" href="#242">242</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/mina/common/UnknownMessageTypeException.html">UnknownMessageTypeException</a>(