iohandlerchain.html

MINA+API 关于MINA的API

<a name="111" href="#111">111</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">void</strong> addLast(String name, <a href="../../../../../org/apache/mina/handler/chain/IoHandlerCommand.html">IoHandlerCommand</a> command) {
<a name="112" href="#112">112</a>         checkAddable(name);
<a name="113" href="#113">113</a>         register(tail.prevEntry, name, command);
<a name="114" href="#114">114</a>     }
<a name="115" href="#115">115</a> 
<a name="116" href="#116">116</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">void</strong> addBefore(String baseName, String name,
<a name="117" href="#117">117</a>             <a href="../../../../../org/apache/mina/handler/chain/IoHandlerCommand.html">IoHandlerCommand</a> command) {
<a name="118" href="#118">118</a>         <a href="../../../../../org/apache/mina/common/IoFilterChain.html">Entry</a> baseEntry = checkOldName(baseName);
<a name="119" href="#119">119</a>         checkAddable(name);
<a name="120" href="#120">120</a>         register(baseEntry.prevEntry, name, command);
<a name="121" href="#121">121</a>     }
<a name="122" href="#122">122</a> 
<a name="123" href="#123">123</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">void</strong> addAfter(String baseName, String name,
<a name="124" href="#124">124</a>             <a href="../../../../../org/apache/mina/handler/chain/IoHandlerCommand.html">IoHandlerCommand</a> command) {
<a name="125" href="#125">125</a>         <a href="../../../../../org/apache/mina/common/IoFilterChain.html">Entry</a> baseEntry = checkOldName(baseName);
<a name="126" href="#126">126</a>         checkAddable(name);
<a name="127" href="#127">127</a>         register(baseEntry, name, command);
<a name="128" href="#128">128</a>     }
<a name="129" href="#129">129</a> 
<a name="130" href="#130">130</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <a href="../../../../../org/apache/mina/handler/chain/IoHandlerCommand.html">IoHandlerCommand</a> remove(String name) {
<a name="131" href="#131">131</a>         <a href="../../../../../org/apache/mina/common/IoFilterChain.html">Entry</a> entry = checkOldName(name);
<a name="132" href="#132">132</a>         deregister(entry);
<a name="133" href="#133">133</a>         <strong class="jxr_keyword">return</strong> entry.getCommand();
<a name="134" href="#134">134</a>     }
<a name="135" href="#135">135</a> 
<a name="136" href="#136">136</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">void</strong> clear() <strong class="jxr_keyword">throws</strong> Exception {
<a name="137" href="#137">137</a>         Iterator&lt;String&gt; it = <strong class="jxr_keyword">new</strong> ArrayList&lt;String&gt;(name2entry.keySet())
<a name="138" href="#138">138</a>                 .iterator();
<a name="139" href="#139">139</a>         <strong class="jxr_keyword">while</strong> (it.hasNext()) {
<a name="140" href="#140">140</a>             <strong class="jxr_keyword">this</strong>.remove(it.next());
<a name="141" href="#141">141</a>         }
<a name="142" href="#142">142</a>     }
<a name="143" href="#143">143</a> 
<a name="144" href="#144">144</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> register(<a href="../../../../../org/apache/mina/common/IoFilterChain.html">Entry</a> prevEntry, String name, <a href="../../../../../org/apache/mina/handler/chain/IoHandlerCommand.html">IoHandlerCommand</a> command) {
<a name="145" href="#145">145</a>         <a href="../../../../../org/apache/mina/common/IoFilterChain.html">Entry</a> newEntry = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/mina/common/IoFilterChain.html">Entry</a>(prevEntry, prevEntry.nextEntry, name,
<a name="146" href="#146">146</a>                 command);
<a name="147" href="#147">147</a>         prevEntry.nextEntry.prevEntry = newEntry;
<a name="148" href="#148">148</a>         prevEntry.nextEntry = newEntry;
<a name="149" href="#149">149</a> 
<a name="150" href="#150">150</a>         name2entry.put(name, newEntry);
<a name="151" href="#151">151</a>     }
<a name="152" href="#152">152</a> 
<a name="153" href="#153">153</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> deregister(<a href="../../../../../org/apache/mina/common/IoFilterChain.html">Entry</a> entry) {
<a name="154" href="#154">154</a>         <a href="../../../../../org/apache/mina/common/IoFilterChain.html">Entry</a> prevEntry = entry.prevEntry;
<a name="155" href="#155">155</a>         <a href="../../../../../org/apache/mina/common/IoFilterChain.html">Entry</a> nextEntry = entry.nextEntry;
<a name="156" href="#156">156</a>         prevEntry.nextEntry = nextEntry;
<a name="157" href="#157">157</a>         nextEntry.prevEntry = prevEntry;
<a name="158" href="#158">158</a> 
<a name="159" href="#159">159</a>         name2entry.remove(entry.name);
<a name="160" href="#160">160</a>     }
<a name="161" href="#161">161</a> 
<a name="162" href="#162">162</a>     <em class="jxr_javadoccomment">/**</em>
<a name="163" href="#163">163</a> <em class="jxr_javadoccomment">     * Throws an exception when the specified filter name is not registered in this chain.</em>
<a name="164" href="#164">164</a> <em class="jxr_javadoccomment">     *</em>
<a name="165" href="#165">165</a> <em class="jxr_javadoccomment">     * @return An filter entry with the specified name.</em>
<a name="166" href="#166">166</a> <em class="jxr_javadoccomment">     */</em>
<a name="167" href="#167">167</a>     <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/mina/common/IoFilterChain.html">Entry</a> checkOldName(String baseName) {
<a name="168" href="#168">168</a>         <a href="../../../../../org/apache/mina/common/IoFilterChain.html">Entry</a> e = name2entry.get(baseName);
<a name="169" href="#169">169</a>         <strong class="jxr_keyword">if</strong> (e == <strong class="jxr_keyword">null</strong>) {
<a name="170" href="#170">170</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Unknown filter name:"</span>
<a name="171" href="#171">171</a>                     + baseName);
<a name="172" href="#172">172</a>         }
<a name="173" href="#173">173</a>         <strong class="jxr_keyword">return</strong> e;
<a name="174" href="#174">174</a>     }
<a name="175" href="#175">175</a> 
<a name="176" href="#176">176</a>     <em class="jxr_javadoccomment">/**</em>
<a name="177" href="#177">177</a> <em class="jxr_javadoccomment">     * Checks the specified filter name is already taken and throws an exception if already taken.</em>
<a name="178" href="#178">178</a> <em class="jxr_javadoccomment">     */</em>
<a name="179" href="#179">179</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> checkAddable(String name) {
<a name="180" href="#180">180</a>         <strong class="jxr_keyword">if</strong> (name2entry.containsKey(name)) {
<a name="181" href="#181">181</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(
<a name="182" href="#182">182</a>                     <span class="jxr_string">"Other filter is using the same name '"</span> + name + <span class="jxr_string">"'"</span>);
<a name="183" href="#183">183</a>         }
<a name="184" href="#184">184</a>     }
<a name="185" href="#185">185</a> 
<a name="186" href="#186">186</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> execute(<a href="../../../../../org/apache/mina/handler/chain/IoHandlerCommand.html">NextCommand</a> next, <a href="../../../../../org/apache/mina/common/IoSession.html">IoSession</a> session, Object message)
<a name="187" href="#187">187</a>             <strong class="jxr_keyword">throws</strong> Exception {
<a name="188" href="#188">188</a>         <strong class="jxr_keyword">if</strong> (next != <strong class="jxr_keyword">null</strong>) {
<a name="189" href="#189">189</a>             session.setAttribute(NEXT_COMMAND, next);
<a name="190" href="#190">190</a>         }
<a name="191" href="#191">191</a> 
<a name="192" href="#192">192</a>         <strong class="jxr_keyword">try</strong> {
<a name="193" href="#193">193</a>             callNextCommand(head, session, message);
<a name="194" href="#194">194</a>         } <strong class="jxr_keyword">finally</strong> {
<a name="195" href="#195">195</a>             session.removeAttribute(NEXT_COMMAND);
<a name="196" href="#196">196</a>         }
<a name="197" href="#197">197</a>     }
<a name="198" href="#198">198</a> 
<a name="199" href="#199">199</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> callNextCommand(<a href="../../../../../org/apache/mina/common/IoFilterChain.html">Entry</a> entry, <a href="../../../../../org/apache/mina/common/IoSession.html">IoSession</a> session, Object message)
<a name="200" href="#200">200</a>             <strong class="jxr_keyword">throws</strong> Exception {
<a name="201" href="#201">201</a>         entry.getCommand().execute(entry.getNextCommand(), session, message);
<a name="202" href="#202">202</a>     }
<a name="203" href="#203">203</a> 
<a name="204" href="#204">204</a>     <strong class="jxr_keyword">public</strong> List&lt;Entry&gt; getAll() {
<a name="205" href="#205">205</a>         List&lt;Entry&gt; list = <strong class="jxr_keyword">new</strong> ArrayList&lt;Entry&gt;();
<a name="206" href="#206">206</a>         <a href="../../../../../org/apache/mina/common/IoFilterChain.html">Entry</a> e = head.nextEntry;
<a name="207" href="#207">207</a>         <strong class="jxr_keyword">while</strong> (e != tail) {
<a name="208" href="#208">208</a>             list.add(e);
<a name="209" href="#209">209</a>             e = e.nextEntry;
<a name="210" href="#210">210</a>         }
<a name="211" href="#211">211</a> 
<a name="212" href="#212">212</a>         <strong class="jxr_keyword">return</strong> list;
<a name="213" href="#213">213</a>     }
<a name="214" href="#214">214</a> 
<a name="215" href="#215">215</a>     <strong class="jxr_keyword">public</strong> List&lt;Entry&gt; getAllReversed() {
<a name="216" href="#216">216</a>         List&lt;Entry&gt; list = <strong class="jxr_keyword">new</strong> ArrayList&lt;Entry&gt;();
<a name="217" href="#217">217</a>         <a href="../../../../../org/apache/mina/common/IoFilterChain.html">Entry</a> e = tail.prevEntry;
<a name="218" href="#218">218</a>         <strong class="jxr_keyword">while</strong> (e != head) {
<a name="219" href="#219">219</a>             list.add(e);
<a name="220" href="#220">220</a>             e = e.prevEntry;
<a name="221" href="#221">221</a>         }
<a name="222" href="#222">222</a>         <strong class="jxr_keyword">return</strong> list;
<a name="223" href="#223">223</a>     }
<a name="224" href="#224">224</a> 
<a name="225" href="#225">225</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> contains(String name) {
<a name="226" href="#226">226</a>         <strong class="jxr_keyword">return</strong> getEntry(name) != <strong class="jxr_keyword">null</strong>;
<a name="227" href="#227">227</a>     }
<a name="228" href="#228">228</a> 
<a name="229" href="#229">229</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> contains(<a href="../../../../../org/apache/mina/handler/chain/IoHandlerCommand.html">IoHandlerCommand</a> command) {
<a name="230" href="#230">230</a>         <a href="../../../../../org/apache/mina/common/IoFilterChain.html">Entry</a> e = head.nextEntry;