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| <div id="overview"><a href="../../../../../../apidocs/org/apache/mina/protocol/handler/DemuxingProtocolHandler.html">View Javadoc</a></div><pre> |
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|
| <a name="1" href="#1">1</a> <em class="comment">/*</em>
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| <a name="2" href="#2">2</a> <em class="comment"> * @(#) $Id: DemuxingProtocolHandler.java 210062 2005-07-11 03:52:38Z trustin $</em>
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| <a name="3" href="#3">3</a> <em class="comment"> */</em>
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| <a name="4" href="#4">4</a> <strong>package</strong> <a href="../../../../../org/apache/mina/protocol/handler/package-summary.html">org.apache.mina.protocol.handler</a>;
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| <a name="5" href="#5">5</a>
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| <a name="6" href="#6">6</a> <strong>import</strong> java.util.HashMap;
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| <a name="7" href="#7">7</a> <strong>import</strong> java.util.HashSet;
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| <a name="8" href="#8">8</a> <strong>import</strong> java.util.Map;
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| <a name="9" href="#9">9</a> <strong>import</strong> java.util.Set;
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| <a name="10" href="#10">10</a>
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| <a name="11" href="#11">11</a> <strong>import</strong> org.apache.mina.protocol.ProtocolHandler;
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| <a name="12" href="#12">12</a> <strong>import</strong> org.apache.mina.protocol.ProtocolHandlerAdapter;
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| <a name="13" href="#13">13</a> <strong>import</strong> org.apache.mina.protocol.ProtocolSession;
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| <a name="14" href="#14">14</a>
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| <a name="15" href="#15">15</a> <em>/**<em>*</em></em>
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| <a name="16" href="#16">16</a> <em> * A {@link ProtocolHandler} that demuxes <code>messageReceived</code> events</em>
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| <a name="17" href="#17">17</a> <em> * to the appropriate {@link MessageHandler}.</em>
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| <a name="18" href="#18">18</a> <em> * </em>
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| <a name="19" href="#19">19</a> <em> * You can freely register and deregister {@link MessageHandler}s using</em>
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| <a name="20" href="#20">20</a> <em> * {@link #registerMessageType(Class, MessageHandler)} and</em>
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| <a name="21" href="#21">21</a> <em> * {@link #deregisterMessageType(Class)}.</em>
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| <a name="22" href="#22">22</a> <em> * </em>
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| <a name="23" href="#23">23</a> <em> * @author The Apache Directory Project</em>
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| <a name="24" href="#24">24</a> <em> * @version $Rev: 210062 $, $Date: 2005-07-11 12:52:38 +0900 $</em>
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| <a name="25" href="#25">25</a> <em> */</em>
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| <a name="26" href="#26">26</a> <strong>public</strong> <strong>class</strong> <a href="../../../../../org/apache/mina/protocol/handler/DemuxingProtocolHandler.html">DemuxingProtocolHandler</a> <strong>extends</strong> <a href="../../../../../org/apache/mina/protocol/ProtocolHandlerAdapter.html">ProtocolHandlerAdapter</a>
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| <a name="27" href="#27">27</a> {
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| <a name="28" href="#28">28</a> <strong>private</strong> <strong>final</strong> Map type2handler = <strong>new</strong> HashMap();
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| <a name="29" href="#29">29</a>
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| <a name="30" href="#30">30</a> <em>/**<em>*</em></em>
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| <a name="31" href="#31">31</a> <em> * Creates a new instance with no registered {@link MessageHandler}s.</em>
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| <a name="32" href="#32">32</a> <em> */</em>
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| <a name="33" href="#33">33</a> <strong>protected</strong> <a href="../../../../../org/apache/mina/protocol/handler/DemuxingProtocolHandler.html">DemuxingProtocolHandler</a>()
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| <a name="34" href="#34">34</a> {
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| <a name="35" href="#35">35</a> }
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| <a name="36" href="#36">36</a>
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| <a name="37" href="#37">37</a> <em>/**<em>*</em></em>
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| <a name="38" href="#38">38</a> <em> * Registers a {@link MessageHandler} that receives the messages of</em>
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| <a name="39" href="#39">39</a> <em> * the specified <code>type</code>.</em>
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| <a name="40" href="#40">40</a> <em> */</em>
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| <a name="41" href="#41">41</a> <strong>public</strong> <strong>void</strong> registerMessageType( Class type, MessageHandler handler )
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| <a name="42" href="#42">42</a> {
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| <a name="43" href="#43">43</a> <strong>synchronized</strong>( type2handler )
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| <a name="44" href="#44">44</a> {
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| <a name="45" href="#45">45</a> type2handler.put( type, handler );
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| <a name="46" href="#46">46</a> }
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| <a name="47" href="#47">47</a> }
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| <a name="48" href="#48">48</a>
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| <a name="49" href="#49">49</a> <em>/**<em>*</em></em>
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| <a name="50" href="#50">50</a> <em> * Deregisters a {@link MessageHandler} that receives the messages of</em>
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| <a name="51" href="#51">51</a> <em> * the specified <code>type</code>.</em>
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| <a name="52" href="#52">52</a> <em> */</em>
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| <a name="53" href="#53">53</a> <strong>public</strong> <strong>void</strong> deregisterMessageType( Class clazz )
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| <a name="54" href="#54">54</a> {
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| <a name="55" href="#55">55</a> <strong>synchronized</strong>( type2handler )
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| <a name="56" href="#56">56</a> {
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| <a name="57" href="#57">57</a> type2handler.remove( clazz );
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| <a name="58" href="#58">58</a> }
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| <a name="59" href="#59">59</a> }
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| <a name="60" href="#60">60</a>
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| <a name="61" href="#61">61</a> <em>/**<em>*</em></em>
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| <a name="62" href="#62">62</a> <em> * Forwards the received events into the appropriate {@link MessageHandler}</em>
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| <a name="63" href="#63">63</a> <em> * which is registered by {@link #registerMessageType(Class, MessageHandler)}.</em>
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| <a name="64" href="#64">64</a> <em> */</em>
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| <a name="65" href="#65">65</a> <strong>public</strong> <strong>void</strong> messageReceived( ProtocolSession session, Object message )
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| <a name="66" href="#66">66</a> {
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| <a name="67" href="#67">67</a> <a href="../../../../../org/apache/mina/protocol/handler/MessageHandler.html">MessageHandler</a> handler = findHandler( message.getClass() );
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| <a name="68" href="#68">68</a> <strong>if</strong>( handler != <strong>null</strong> )
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| <a name="69" href="#69">69</a> {
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| <a name="70" href="#70">70</a> handler.messageReceived( session, message );
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| <a name="71" href="#71">71</a> }
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| <a name="72" href="#72">72</a> <strong>else</strong>
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| <a name="73" href="#73">73</a> {
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| <a name="74" href="#74">74</a> <strong>throw</strong> <strong>new</strong> <a href="../../../../../org/apache/mina/protocol/handler/UnknownMessageTypeException.html">UnknownMessageTypeException</a>(
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| <a name="75" href="#75">75</a> <span class="string">"No message handler found for message: "</span> + message );
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| <a name="76" href="#76">76</a> }
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| <a name="77" href="#77">77</a> }
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| <a name="78" href="#78">78</a>
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| <a name="79" href="#79">79</a> <strong>private</strong> <a href="../../../../../org/apache/mina/protocol/handler/MessageHandler.html">MessageHandler</a> findHandler( Class type )
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| <a name="80" href="#80">80</a> {
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| <a name="81" href="#81">81</a> <a href="../../../../../org/apache/mina/protocol/handler/MessageHandler.html">MessageHandler</a> handler = ( MessageHandler ) type2handler.get( type );
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| <a name="82" href="#82">82</a> <strong>if</strong>( handler == <strong>null</strong> )
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| <a name="83" href="#83">83</a> {
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| <a name="84" href="#84">84</a> handler = findHandler( type, <strong>new</strong> HashSet() );
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| <a name="85" href="#85">85</a> }
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| <a name="86" href="#86">86</a>
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| <a name="87" href="#87">87</a> <strong>return</strong> handler;
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| <a name="88" href="#88">88</a> }
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| <a name="89" href="#89">89</a>
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| <a name="90" href="#90">90</a> <strong>private</strong> <a href="../../../../../org/apache/mina/protocol/handler/MessageHandler.html">MessageHandler</a> findHandler( Class type, Set triedClasses )
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| <a name="91" href="#91">91</a> {
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| <a name="92" href="#92">92</a> <a href="../../../../../org/apache/mina/protocol/handler/MessageHandler.html">MessageHandler</a> handler;
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| <a name="93" href="#93">93</a>
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| <a name="94" href="#94">94</a> <strong>if</strong>( triedClasses.contains( type ) )
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| <a name="95" href="#95">95</a> <strong>return</strong> <strong>null</strong>;
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| <a name="96" href="#96">96</a> triedClasses.add( type );
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| <a name="97" href="#97">97</a>
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| <a name="98" href="#98">98</a> handler = ( MessageHandler ) type2handler.get( type );
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| <a name="99" href="#99">99</a> <strong>if</strong>( handler == <strong>null</strong> )
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| <a name="100" href="#100">100</a> {
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| <a name="101" href="#101">101</a> handler = findHandler( type, triedClasses );
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| <a name="102" href="#102">102</a> <strong>if</strong>( handler != <strong>null</strong> )
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| <a name="103" href="#103">103</a> <strong>return</strong> handler;
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| <a name="104" href="#104">104</a>
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| <a name="105" href="#105">105</a> Class[] interfaces = type.getInterfaces();
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| <a name="106" href="#106">106</a> <strong>for</strong>( <strong>int</strong> i = 0; i < <strong>int</strong>erfaces.length; i ++ )
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| <a name="107" href="#107">107</a> {
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| <a name="108" href="#108">108</a> handler = findHandler( interfaces[ i ], triedClasses );
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| <a name="109" href="#109">109</a> <strong>if</strong>( handler != <strong>null</strong> )
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| <a name="110" href="#110">110</a> <strong>return</strong> handler;
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| <a name="111" href="#111">111</a> }
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| <a name="112" href="#112">112</a>
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| <a name="113" href="#113">113</a> <strong>return</strong> <strong>null</strong>;
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| <a name="114" href="#114">114</a> }
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| <a name="115" href="#115">115</a> <strong>else</strong>
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| <a name="116" href="#116">116</a> <strong>return</strong> handler;
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| <a name="117" href="#117">117</a> }
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| <a name="118" href="#118">118</a> }
|
| </pre> |
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