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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * software distributed under the License is distributed on an<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * KIND, either express or implied. See the License for the<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * specific language governing permissions and limitations<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * under the License.<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> *<a name="line.18"></a> |
| <span class="sourceLineNo">019</span> */<a name="line.19"></a> |
| <span class="sourceLineNo">020</span>package org.apache.mina.handler.demux;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.Collections;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.Map;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.Set;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span><a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.mina.core.service.IoHandler;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.mina.core.service.IoHandlerAdapter;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.mina.core.session.IoSession;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.mina.core.session.UnknownMessageTypeException;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.mina.util.IdentityHashSet;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span><a name="line.32"></a> |
| <span class="sourceLineNo">033</span>/**<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> * A {@link IoHandler} that demuxes <code>messageReceived</code> events<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> * to the appropriate {@link MessageHandler}.<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * <p><a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * You can freely register and deregister {@link MessageHandler}s using<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * {@link #addReceivedMessageHandler(Class, MessageHandler)} and<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * {@link #removeReceivedMessageHandler(Class)}.<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * <p><a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * When <code>message</code> is received through a call to<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * {@link #messageReceived(IoSession, Object)} the class of the<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * <code>message</code> object will be used to find a {@link MessageHandler} for<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> * that particular message type. If no {@link MessageHandler} instance can be<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> * found for the immediate class (i.e. <code>message.getClass()</code>) the<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * interfaces implemented by the immediate class will be searched in depth-first<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * order. If no match can be found for any of the interfaces the search will be<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * repeated recursively for the superclass of the immediate class<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * (i.e. <code>message.getClass().getSuperclass()</code>).<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * <p><a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * Consider the following type hierarchy (<code>Cx</code> are classes while<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * <code>Ix</code> are interfaces):<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * <pre><a name="line.53"></a> |
| <span class="sourceLineNo">054</span> * C3 - I7 - I9<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * | | /\<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * | I8 I3 I4<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * |<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * C2 - I5 - I6<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * |<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * C1 - I1 - I2 - I4<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * | |<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> * | I3<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> * Object<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> * </pre><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> * When <code>message</code> is of type <code>C3</code> this hierarchy will be<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> * searched in the following order:<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> * <code>C3, I7, I8, I9, I3, I4, C2, I5, I6, C1, I1, I2, I3, I4, Object</code>.<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> * <p><a name="line.68"></a> |
| <span class="sourceLineNo">069</span> * For efficiency searches will be cached. Calls to<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> * {@link #addReceivedMessageHandler(Class, MessageHandler)} and<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> * {@link #removeReceivedMessageHandler(Class)} clear this cache.<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> *<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * @author <a href="http://mina.apache.org">Apache MINA Project</a><a name="line.73"></a> |
| <span class="sourceLineNo">074</span> */<a name="line.74"></a> |
| <span class="sourceLineNo">075</span>public class DemuxingIoHandler extends IoHandlerAdapter {<a name="line.75"></a> |
| <span class="sourceLineNo">076</span><a name="line.76"></a> |
| <span class="sourceLineNo">077</span> private final Map<Class<?>, MessageHandler<?>> receivedMessageHandlerCache = new ConcurrentHashMap<Class<?>, MessageHandler<?>>();<a name="line.77"></a> |
| <span class="sourceLineNo">078</span><a name="line.78"></a> |
| <span class="sourceLineNo">079</span> private final Map<Class<?>, MessageHandler<?>> receivedMessageHandlers = new ConcurrentHashMap<Class<?>, MessageHandler<?>>();<a name="line.79"></a> |
| <span class="sourceLineNo">080</span><a name="line.80"></a> |
| <span class="sourceLineNo">081</span> private final Map<Class<?>, MessageHandler<?>> sentMessageHandlerCache = new ConcurrentHashMap<Class<?>, MessageHandler<?>>();<a name="line.81"></a> |
| <span class="sourceLineNo">082</span><a name="line.82"></a> |
| <span class="sourceLineNo">083</span> private final Map<Class<?>, MessageHandler<?>> sentMessageHandlers = new ConcurrentHashMap<Class<?>, MessageHandler<?>>();<a name="line.83"></a> |
| <span class="sourceLineNo">084</span><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> private final Map<Class<?>, ExceptionHandler<?>> exceptionHandlerCache = new ConcurrentHashMap<Class<?>, ExceptionHandler<?>>();<a name="line.85"></a> |
| <span class="sourceLineNo">086</span><a name="line.86"></a> |
| <span class="sourceLineNo">087</span> private final Map<Class<?>, ExceptionHandler<?>> exceptionHandlers = new ConcurrentHashMap<Class<?>, ExceptionHandler<?>>();<a name="line.87"></a> |
| <span class="sourceLineNo">088</span><a name="line.88"></a> |
| <span class="sourceLineNo">089</span> /**<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> * Creates a new instance with no registered {@link MessageHandler}s.<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> */<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> public DemuxingIoHandler() {<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> // Do nothing<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> }<a name="line.94"></a> |
| <span class="sourceLineNo">095</span><a name="line.95"></a> |
| <span class="sourceLineNo">096</span> /**<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> * Registers a {@link MessageHandler} that handles the received messages of<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> * the specified <code>type</code>.<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> * <a name="line.99"></a> |
| <span class="sourceLineNo">100</span> * @param <E> The message handler's type<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> * @param type The message's type<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> * @param handler The message handler<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> * @return the old handler if there is already a registered handler for<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> * the specified <tt>type</tt>. <tt>null</tt> otherwise.<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> */<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> @SuppressWarnings("unchecked")<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> public <E> MessageHandler<? super E> addReceivedMessageHandler(Class<E> type, MessageHandler<? super E> handler) {<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> receivedMessageHandlerCache.clear();<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> <a name="line.109"></a> |
| <span class="sourceLineNo">110</span> return (MessageHandler<? super E>) receivedMessageHandlers.put(type, handler);<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> }<a name="line.111"></a> |
| <span class="sourceLineNo">112</span><a name="line.112"></a> |
| <span class="sourceLineNo">113</span> /**<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> * Deregisters a {@link MessageHandler} that handles the received messages<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> * of the specified <code>type</code>.<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> *<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> * @param <E> The message handler's type<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> * @param type The message's type<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> * @return the removed handler if successfully removed. <tt>null</tt> otherwise.<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> */<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> @SuppressWarnings("unchecked")<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> public <E> MessageHandler<? super E> removeReceivedMessageHandler(Class<E> type) {<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> receivedMessageHandlerCache.clear();<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> <a name="line.124"></a> |
| <span class="sourceLineNo">125</span> return (MessageHandler<? super E>) receivedMessageHandlers.remove(type);<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> }<a name="line.126"></a> |
| <span class="sourceLineNo">127</span><a name="line.127"></a> |
| <span class="sourceLineNo">128</span> /**<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> * Registers a {@link MessageHandler} that handles the sent messages of the<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> * specified <code>type</code>.<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> *<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> * @param <E> The message handler's type<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> * @param type The message's type<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> * @param handler The message handler<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> * @return the old handler if there is already a registered handler for<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> * the specified <tt>type</tt>. <tt>null</tt> otherwise.<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> */<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> @SuppressWarnings("unchecked")<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> public <E> MessageHandler<? super E> addSentMessageHandler(Class<E> type, MessageHandler<? super E> handler) {<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> sentMessageHandlerCache.clear();<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> <a name="line.141"></a> |
| <span class="sourceLineNo">142</span> return (MessageHandler<? super E>) sentMessageHandlers.put(type, handler);<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> }<a name="line.143"></a> |
| <span class="sourceLineNo">144</span><a name="line.144"></a> |
| <span class="sourceLineNo">145</span> /**<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> * Deregisters a {@link MessageHandler} that handles the sent messages of<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> * the specified <code>type</code>.<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> *<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> * @param <E> The message handler's type<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> * @param type The message's type<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> * @return the removed handler if successfully removed. <tt>null</tt> otherwise.<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> */<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> @SuppressWarnings("unchecked")<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> public <E> MessageHandler<? super E> removeSentMessageHandler(Class<E> type) {<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> sentMessageHandlerCache.clear();<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> <a name="line.156"></a> |
| <span class="sourceLineNo">157</span> return (MessageHandler<? super E>) sentMessageHandlers.remove(type);<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> }<a name="line.158"></a> |
| <span class="sourceLineNo">159</span><a name="line.159"></a> |
| <span class="sourceLineNo">160</span> /**<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> * Registers a {@link MessageHandler} that receives the messages of<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> * the specified <code>type</code>.<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> *<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> * @param <E> The message handler's type<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> * @param type The message's type<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> * @param handler The Exception handler<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> * @return the old handler if there is already a registered handler for<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> * the specified <tt>type</tt>. <tt>null</tt> otherwise.<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> */<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> @SuppressWarnings("unchecked")<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> public <E extends Throwable> ExceptionHandler<? super E> addExceptionHandler(Class<E> type,<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> ExceptionHandler<? super E> handler) {<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> exceptionHandlerCache.clear();<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> <a name="line.174"></a> |
| <span class="sourceLineNo">175</span> return (ExceptionHandler<? super E>) exceptionHandlers.put(type, handler);<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> }<a name="line.176"></a> |
| <span class="sourceLineNo">177</span><a name="line.177"></a> |
| <span class="sourceLineNo">178</span> /**<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> * Deregisters a {@link MessageHandler} that receives the messages of<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> * the specified <code>type</code>.<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> *<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> * @param <E> The Exception Handler's type<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> * @param type The message's type<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> * @return the removed handler if successfully removed. <tt>null</tt> otherwise.<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> */<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> @SuppressWarnings("unchecked")<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> public <E extends Throwable> ExceptionHandler<? super E> removeExceptionHandler(Class<E> type) {<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> exceptionHandlerCache.clear();<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> <a name="line.189"></a> |
| <span class="sourceLineNo">190</span> return (ExceptionHandler<? super E>) exceptionHandlers.remove(type);<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> }<a name="line.191"></a> |
| <span class="sourceLineNo">192</span><a name="line.192"></a> |
| <span class="sourceLineNo">193</span> /**<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> * @return the {@link MessageHandler} which is registered to process<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> * the specified <code>type</code>.<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> * @param <E> The message handler's type<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> * @param type The message's type<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> */<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> @SuppressWarnings("unchecked")<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> public <E> MessageHandler<? super E> getMessageHandler(Class<E> type) {<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> return (MessageHandler<? super E>) receivedMessageHandlers.get(type);<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> }<a name="line.202"></a> |
| <span class="sourceLineNo">203</span><a name="line.203"></a> |
| <span class="sourceLineNo">204</span> /**<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> * @return the {@link Map} which contains all messageType-{@link MessageHandler}<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> * pairs registered to this handler for received messages.<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> */<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> public Map<Class<?>, MessageHandler<?>> getReceivedMessageHandlerMap() {<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> return Collections.unmodifiableMap(receivedMessageHandlers);<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> }<a name="line.210"></a> |
| <span class="sourceLineNo">211</span><a name="line.211"></a> |
| <span class="sourceLineNo">212</span> /**<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> * @return the {@link Map} which contains all messageType-{@link MessageHandler}<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> * pairs registered to this handler for sent messages.<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> */<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> public Map<Class<?>, MessageHandler<?>> getSentMessageHandlerMap() {<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> return Collections.unmodifiableMap(sentMessageHandlers);<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> }<a name="line.218"></a> |
| <span class="sourceLineNo">219</span><a name="line.219"></a> |
| <span class="sourceLineNo">220</span> /**<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> * @return the {@link Map} which contains all messageType-{@link MessageHandler}<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> * pairs registered to this handler.<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> */<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> public Map<Class<?>, ExceptionHandler<?>> getExceptionHandlerMap() {<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> return Collections.unmodifiableMap(exceptionHandlers);<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> }<a name="line.226"></a> |
| <span class="sourceLineNo">227</span><a name="line.227"></a> |
| <span class="sourceLineNo">228</span> /**<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> * Forwards the received events into the appropriate {@link MessageHandler}<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> * which is registered by {@link #addReceivedMessageHandler(Class, MessageHandler)}.<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> * <a name="line.231"></a> |
| <span class="sourceLineNo">232</span> * <b>Warning !</b> If you are to overload this method, be aware that you <a name="line.232"></a> |
| <span class="sourceLineNo">233</span> * _must_ call the messageHandler in your own method, otherwise it won't <a name="line.233"></a> |
| <span class="sourceLineNo">234</span> * be called.<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> * <a name="line.235"></a> |
| <span class="sourceLineNo">236</span> * {@inheritDoc}<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> */<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> @Override<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> public void messageReceived(IoSession session, Object message) throws Exception {<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> MessageHandler<Object> handler = findReceivedMessageHandler(message.getClass());<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> <a name="line.241"></a> |
| <span class="sourceLineNo">242</span> if (handler != null) {<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> handler.handleMessage(session, message);<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> } else {<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> throw new UnknownMessageTypeException("No message handler found for message type: "<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> + message.getClass().getSimpleName());<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> }<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> }<a name="line.248"></a> |
| <span class="sourceLineNo">249</span><a name="line.249"></a> |
| <span class="sourceLineNo">250</span> /**<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> * Invoked when a message written by IoSession.write(Object) is sent out.<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> * <a name="line.252"></a> |
| <span class="sourceLineNo">253</span> * <b>Warning !</b> If you are to overload this method, be aware that you <a name="line.253"></a> |
| <span class="sourceLineNo">254</span> * _must_ call the messageHandler in your own method, otherwise it won't <a name="line.254"></a> |
| <span class="sourceLineNo">255</span> * be called.<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> * <a name="line.256"></a> |
| <span class="sourceLineNo">257</span> * {@inheritDoc}<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> */<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> @Override<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> public void messageSent(IoSession session, Object message) throws Exception {<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> MessageHandler<Object> handler = findSentMessageHandler(message.getClass());<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> <a name="line.262"></a> |
| <span class="sourceLineNo">263</span> if (handler != null) {<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> handler.handleMessage(session, message);<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> } else {<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> throw new UnknownMessageTypeException("No handler found for message type: "<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> + message.getClass().getSimpleName());<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> }<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> }<a name="line.269"></a> |
| <span class="sourceLineNo">270</span><a name="line.270"></a> |
| <span class="sourceLineNo">271</span> /**<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> * Invoked when any exception is thrown by user IoHandler implementation <a name="line.272"></a> |
| <span class="sourceLineNo">273</span> * or by MINA. If cause is an instance of IOException, MINA will close the <a name="line.273"></a> |
| <span class="sourceLineNo">274</span> * connection automatically.<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> *<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> * <b>Warning !</b> If you are to overload this method, be aware that you <a name="line.276"></a> |
| <span class="sourceLineNo">277</span> * _must_ call the messageHandler in your own method, otherwise it won't <a name="line.277"></a> |
| <span class="sourceLineNo">278</span> * be called.<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> * <a name="line.279"></a> |
| <span class="sourceLineNo">280</span> * {@inheritDoc}<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> */<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> @Override<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> public void exceptionCaught(IoSession session, Throwable cause) throws Exception {<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> ExceptionHandler<Throwable> handler = findExceptionHandler(cause.getClass());<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> <a name="line.285"></a> |
| <span class="sourceLineNo">286</span> if (handler != null) {<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> handler.exceptionCaught(session, cause);<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> } else {<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> throw new UnknownMessageTypeException("No handler found for exception type: "<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> + cause.getClass().getSimpleName());<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> }<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> }<a name="line.292"></a> |
| <span class="sourceLineNo">293</span><a name="line.293"></a> |
| <span class="sourceLineNo">294</span> protected MessageHandler<Object> findReceivedMessageHandler(Class<?> type) {<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> return findReceivedMessageHandler(type, null);<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> }<a name="line.296"></a> |
| <span class="sourceLineNo">297</span><a name="line.297"></a> |
| <span class="sourceLineNo">298</span> protected MessageHandler<Object> findSentMessageHandler(Class<?> type) {<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> return findSentMessageHandler(type, null);<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> }<a name="line.300"></a> |
| <span class="sourceLineNo">301</span><a name="line.301"></a> |
| <span class="sourceLineNo">302</span> protected ExceptionHandler<Throwable> findExceptionHandler(Class<? extends Throwable> type) {<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> return findExceptionHandler(type, null);<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> }<a name="line.304"></a> |
| <span class="sourceLineNo">305</span><a name="line.305"></a> |
| <span class="sourceLineNo">306</span> @SuppressWarnings("unchecked")<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> private MessageHandler<Object> findReceivedMessageHandler(Class<?> type, Set<Class<?>> triedClasses) {<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> return (MessageHandler<Object>) findHandler(receivedMessageHandlers, receivedMessageHandlerCache, type,<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> triedClasses);<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> }<a name="line.310"></a> |
| <span class="sourceLineNo">311</span><a name="line.311"></a> |
| <span class="sourceLineNo">312</span> @SuppressWarnings("unchecked")<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> private MessageHandler<Object> findSentMessageHandler(Class<?> type, Set<Class<?>> triedClasses) {<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> return (MessageHandler<Object>) findHandler(sentMessageHandlers, sentMessageHandlerCache, type, triedClasses);<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> }<a name="line.315"></a> |
| <span class="sourceLineNo">316</span><a name="line.316"></a> |
| <span class="sourceLineNo">317</span> @SuppressWarnings("unchecked")<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> private ExceptionHandler<Throwable> findExceptionHandler(Class<?> type, Set<Class<?>> triedClasses) {<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> return (ExceptionHandler<Throwable>) findHandler(exceptionHandlers, exceptionHandlerCache, type, triedClasses);<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> }<a name="line.320"></a> |
| <span class="sourceLineNo">321</span><a name="line.321"></a> |
| <span class="sourceLineNo">322</span> @SuppressWarnings("unchecked")<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> private Object findHandler(Map<Class<?>,?> handlers, Map handlerCache, Class<?> type, Set<Class<?>> triedClasses) {<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> if ((triedClasses != null) && (triedClasses.contains(type))) {<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> return null;<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> }<a name="line.326"></a> |
| <span class="sourceLineNo">327</span><a name="line.327"></a> |
| <span class="sourceLineNo">328</span> /*<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> * Try the cache first.<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> */<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> Object handler = handlerCache.get(type);<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> <a name="line.332"></a> |
| <span class="sourceLineNo">333</span> if (handler != null) {<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> return handler;<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> }<a name="line.335"></a> |
| <span class="sourceLineNo">336</span><a name="line.336"></a> |
| <span class="sourceLineNo">337</span> /*<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> * Try the registered handlers for an immediate match.<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> */<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> handler = handlers.get(type);<a name="line.340"></a> |
| <span class="sourceLineNo">341</span><a name="line.341"></a> |
| <span class="sourceLineNo">342</span> if (handler == null) {<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> /*<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> * No immediate match could be found. Search the type's interfaces.<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> */<a name="line.345"></a> |
| <span class="sourceLineNo">346</span><a name="line.346"></a> |
| <span class="sourceLineNo">347</span> if (triedClasses == null) {<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> triedClasses = new IdentityHashSet<Class<?>>();<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> }<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> <a name="line.350"></a> |
| <span class="sourceLineNo">351</span> triedClasses.add(type);<a name="line.351"></a> |
| <span class="sourceLineNo">352</span><a name="line.352"></a> |
| <span class="sourceLineNo">353</span> Class<?>[] interfaces = type.getInterfaces();<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> <a name="line.354"></a> |
| <span class="sourceLineNo">355</span> for (Class<?> element : interfaces) {<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> handler = findHandler(handlers, handlerCache, element, triedClasses);<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> <a name="line.357"></a> |
| <span class="sourceLineNo">358</span> if (handler != null) {<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> break;<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> }<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> }<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> }<a name="line.362"></a> |
| <span class="sourceLineNo">363</span><a name="line.363"></a> |
| <span class="sourceLineNo">364</span> if (handler == null) {<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> /*<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> * No match in type's interfaces could be found. Search the<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> * superclass.<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> */<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> Class<?> superclass = type.getSuperclass();<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> <a name="line.370"></a> |
| <span class="sourceLineNo">371</span> if (superclass != null) {<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> handler = findHandler(handlers, handlerCache, superclass, null);<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> }<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> }<a name="line.374"></a> |
| <span class="sourceLineNo">375</span><a name="line.375"></a> |
| <span class="sourceLineNo">376</span> /*<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> * Make sure the handler is added to the cache. By updating the cache<a name="line.377"></a> |
| <span class="sourceLineNo">378</span> * here all the types (superclasses and interfaces) in the path which<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> * led to a match will be cached along with the immediate message type.<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> */<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> if (handler != null) {<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> handlerCache.put(type, handler);<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> }<a name="line.383"></a> |
| <span class="sourceLineNo">384</span><a name="line.384"></a> |
| <span class="sourceLineNo">385</span> return handler;<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> }<a name="line.386"></a> |
| <span class="sourceLineNo">387</span>}<a name="line.387"></a> |
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| </div> |
| </body> |
| </html> |
