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| <a name="1" href="#1">1</a> <em class="jxr_comment">/*</em> |
| <a name="2" href="#2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one</em> |
| <a name="3" href="#3">3</a> <em class="jxr_comment"> * or more contributor license agreements. See the NOTICE file</em> |
| <a name="4" href="#4">4</a> <em class="jxr_comment"> * distributed with this work for additional information</em> |
| <a name="5" href="#5">5</a> <em class="jxr_comment"> * regarding copyright ownership. The ASF licenses this file</em> |
| <a name="6" href="#6">6</a> <em class="jxr_comment"> * to you under the Apache License, Version 2.0 (the</em> |
| <a name="7" href="#7">7</a> <em class="jxr_comment"> * "License"); you may not use this file except in compliance</em> |
| <a name="8" href="#8">8</a> <em class="jxr_comment"> * with the License. You may obtain a copy of the License at</em> |
| <a name="9" href="#9">9</a> <em class="jxr_comment"> *</em> |
| <a name="10" href="#10">10</a> <em class="jxr_comment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em> |
| <a name="11" href="#11">11</a> <em class="jxr_comment"> *</em> |
| <a name="12" href="#12">12</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing,</em> |
| <a name="13" href="#13">13</a> <em class="jxr_comment"> * software distributed under the License is distributed on an</em> |
| <a name="14" href="#14">14</a> <em class="jxr_comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</em> |
| <a name="15" href="#15">15</a> <em class="jxr_comment"> * KIND, either express or implied. See the License for the</em> |
| <a name="16" href="#16">16</a> <em class="jxr_comment"> * specific language governing permissions and limitations</em> |
| <a name="17" href="#17">17</a> <em class="jxr_comment"> * under the License.</em> |
| <a name="18" href="#18">18</a> <em class="jxr_comment"> *</em> |
| <a name="19" href="#19">19</a> <em class="jxr_comment"> */</em> |
| <a name="20" href="#20">20</a> <strong class="jxr_keyword">package</strong> org.apache.mina.statemachine; |
| <a name="21" href="#21">21</a> |
| <a name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> java.util.Collection; |
| <a name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> java.util.Collections; |
| <a name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> java.util.HashMap; |
| <a name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> java.util.LinkedList; |
| <a name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> java.util.Map; |
| <a name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> java.util.Stack; |
| <a name="28" href="#28">28</a> |
| <a name="29" href="#29">29</a> <strong class="jxr_keyword">import</strong> org.apache.mina.statemachine.context.StateContext; |
| <a name="30" href="#30">30</a> <strong class="jxr_keyword">import</strong> org.apache.mina.statemachine.event.Event; |
| <a name="31" href="#31">31</a> <strong class="jxr_keyword">import</strong> org.apache.mina.statemachine.event.UnhandledEventException; |
| <a name="32" href="#32">32</a> <strong class="jxr_keyword">import</strong> org.apache.mina.statemachine.transition.Transition; |
| <a name="33" href="#33">33</a> <strong class="jxr_keyword">import</strong> org.slf4j.Logger; |
| <a name="34" href="#34">34</a> <strong class="jxr_keyword">import</strong> org.slf4j.LoggerFactory; |
| <a name="35" href="#35">35</a> |
| <a name="36" href="#36">36</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="37" href="#37">37</a> <em class="jxr_javadoccomment"> * Represents a complete state machine. Contains a collection of {@link State}</em> |
| <a name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * objects connected by {@link Transition}s. Normally you wouldn't create </em> |
| <a name="39" href="#39">39</a> <em class="jxr_javadoccomment"> * instances of this class directly but rather use the </em> |
| <a name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * {@link org.apache.mina.statemachine.annotation.State} annotation to define</em> |
| <a name="41" href="#41">41</a> <em class="jxr_javadoccomment"> * your states and then let {@link StateMachineFactory} create a </em> |
| <a name="42" href="#42">42</a> <em class="jxr_javadoccomment"> * {@link StateMachine} for you.</em> |
| <a name="43" href="#43">43</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="44" href="#44">44</a> <em class="jxr_javadoccomment"> * @author The Apache MINA Project (dev@mina.apache.org)</em> |
| <a name="45" href="#45">45</a> <em class="jxr_javadoccomment"> * @version $Rev: 641052 $, $Date: 2008-03-25 23:22:35 +0100 (Tue, 25 Mar 2008) $</em> |
| <a name="46" href="#46">46</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="47" href="#47">47</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/mina/statemachine/StateMachine.html">StateMachine</a> { |
| <a name="48" href="#48">48</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Logger log = LoggerFactory.getLogger(StateMachine.<strong class="jxr_keyword">class</strong>); |
| <a name="49" href="#49">49</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String CALL_STACK = StateMachine.<strong class="jxr_keyword">class</strong>.getName() + <span class="jxr_string">".callStack"</span>; |
| <a name="50" href="#50">50</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../org/apache/mina/statemachine/State.html">State</a> startState; |
| <a name="51" href="#51">51</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Map<String, State> states; |
| <a name="52" href="#52">52</a> |
| <a name="53" href="#53">53</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> ThreadLocal<Boolean> processingThreadLocal = <strong class="jxr_keyword">new</strong> ThreadLocal<Boolean>() { |
| <a name="54" href="#54">54</a> <strong class="jxr_keyword">protected</strong> Boolean initialValue() { |
| <a name="55" href="#55">55</a> <strong class="jxr_keyword">return</strong> Boolean.FALSE; |
| <a name="56" href="#56">56</a> } |
| <a name="57" href="#57">57</a> }; |
| <a name="58" href="#58">58</a> |
| <a name="59" href="#59">59</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> ThreadLocal<LinkedList<Event>> eventQueueThreadLocal = <strong class="jxr_keyword">new</strong> ThreadLocal<LinkedList<Event>>() { |
| <a name="60" href="#60">60</a> <strong class="jxr_keyword">protected</strong> LinkedList<Event> initialValue() { |
| <a name="61" href="#61">61</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> LinkedList<Event>(); |
| <a name="62" href="#62">62</a> } |
| <a name="63" href="#63">63</a> }; |
| <a name="64" href="#64">64</a> |
| <a name="65" href="#65">65</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="66" href="#66">66</a> <em class="jxr_javadoccomment"> * Creates a new instance using the specified {@link State}s and start</em> |
| <a name="67" href="#67">67</a> <em class="jxr_javadoccomment"> * state.</em> |
| <a name="68" href="#68">68</a> <em class="jxr_javadoccomment"> * </em> |
| <a name="69" href="#69">69</a> <em class="jxr_javadoccomment"> * @param states the {@link State}s.</em> |
| <a name="70" href="#70">70</a> <em class="jxr_javadoccomment"> * @param startStateId the id of the start {@link State}.</em> |
| <a name="71" href="#71">71</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="72" href="#72">72</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/mina/statemachine/StateMachine.html">StateMachine</a>(<a href="../../../../org/apache/mina/statemachine/State.html">State</a>[] states, String startStateId) { |
| <a name="73" href="#73">73</a> <strong class="jxr_keyword">this</strong>.states = <strong class="jxr_keyword">new</strong> HashMap<String, State>(); |
| <a name="74" href="#74">74</a> <strong class="jxr_keyword">for</strong> (State s : states) { |
| <a name="75" href="#75">75</a> <strong class="jxr_keyword">this</strong>.states.put(s.getId(), s); |
| <a name="76" href="#76">76</a> } |
| <a name="77" href="#77">77</a> <strong class="jxr_keyword">this</strong>.startState = getState(startStateId); |
| <a name="78" href="#78">78</a> } |
| <a name="79" href="#79">79</a> |
| <a name="80" href="#80">80</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="81" href="#81">81</a> <em class="jxr_javadoccomment"> * Creates a new instance using the specified {@link State}s and start</em> |
| <a name="82" href="#82">82</a> <em class="jxr_javadoccomment"> * state.</em> |
| <a name="83" href="#83">83</a> <em class="jxr_javadoccomment"> * </em> |
| <a name="84" href="#84">84</a> <em class="jxr_javadoccomment"> * @param states the {@link State}s.</em> |
| <a name="85" href="#85">85</a> <em class="jxr_javadoccomment"> * @param startStateId the id of the start {@link State}.</em> |
| <a name="86" href="#86">86</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="87" href="#87">87</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/mina/statemachine/StateMachine.html">StateMachine</a>(Collection<State> states, String startStateId) { |
| <a name="88" href="#88">88</a> <strong class="jxr_keyword">this</strong>(states.toArray(<strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/mina/statemachine/State.html">State</a>[0]), startStateId); |
| <a name="89" href="#89">89</a> } |
| <a name="90" href="#90">90</a> |
| <a name="91" href="#91">91</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="92" href="#92">92</a> <em class="jxr_javadoccomment"> * Returns the {@link State} with the specified id.</em> |
| <a name="93" href="#93">93</a> <em class="jxr_javadoccomment"> * </em> |
| <a name="94" href="#94">94</a> <em class="jxr_javadoccomment"> * @param id the id of the {@link State} to return.</em> |
| <a name="95" href="#95">95</a> <em class="jxr_javadoccomment"> * @return the {@link State}</em> |
| <a name="96" href="#96">96</a> <em class="jxr_javadoccomment"> * @throws NoSuchStateException if no matching {@link State} could be found.</em> |
| <a name="97" href="#97">97</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="98" href="#98">98</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/mina/statemachine/State.html">State</a> getState(String id) <strong class="jxr_keyword">throws</strong> NoSuchStateException { |
| <a name="99" href="#99">99</a> <a href="../../../../org/apache/mina/statemachine/State.html">State</a> state = states.get(id); |
| <a name="100" href="#100">100</a> <strong class="jxr_keyword">if</strong> (state == <strong class="jxr_keyword">null</strong>) { |
| <a name="101" href="#101">101</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/mina/statemachine/NoSuchStateException.html">NoSuchStateException</a>(id); |
| <a name="102" href="#102">102</a> } |
| <a name="103" href="#103">103</a> <strong class="jxr_keyword">return</strong> state; |
| <a name="104" href="#104">104</a> } |
| <a name="105" href="#105">105</a> |
| <a name="106" href="#106">106</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="107" href="#107">107</a> <em class="jxr_javadoccomment"> * Returns an unmodifiable {@link Collection} of all {@link State}s used by</em> |
| <a name="108" href="#108">108</a> <em class="jxr_javadoccomment"> * this {@link StateMachine}.</em> |
| <a name="109" href="#109">109</a> <em class="jxr_javadoccomment"> * </em> |
| <a name="110" href="#110">110</a> <em class="jxr_javadoccomment"> * @return the {@link State}s.</em> |
| <a name="111" href="#111">111</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="112" href="#112">112</a> <strong class="jxr_keyword">public</strong> Collection<State> getStates() { |
| <a name="113" href="#113">113</a> <strong class="jxr_keyword">return</strong> Collections.unmodifiableCollection(states.values()); |
| <a name="114" href="#114">114</a> } |
| <a name="115" href="#115">115</a> |
| <a name="116" href="#116">116</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="117" href="#117">117</a> <em class="jxr_javadoccomment"> * Processes the specified {@link Event} through this {@link StateMachine}.</em> |
| <a name="118" href="#118">118</a> <em class="jxr_javadoccomment"> * Normally you wouldn't call this directly but rather use</em> |
| <a name="119" href="#119">119</a> <em class="jxr_javadoccomment"> * {@link StateMachineProxyBuilder} to create a proxy for an interface of</em> |
| <a name="120" href="#120">120</a> <em class="jxr_javadoccomment"> * your choice. Any method calls on the proxy will be translated into</em> |
| <a name="121" href="#121">121</a> <em class="jxr_javadoccomment"> * {@link Event} objects and then fed to the {@link StateMachine} by the</em> |
| <a name="122" href="#122">122</a> <em class="jxr_javadoccomment"> * proxy using this method.</em> |
| <a name="123" href="#123">123</a> <em class="jxr_javadoccomment"> * </em> |
| <a name="124" href="#124">124</a> <em class="jxr_javadoccomment"> * @param event the {@link Event} to be handled.</em> |
| <a name="125" href="#125">125</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="126" href="#126">126</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> handle(<a href="../../../../org/apache/mina/statemachine/event/Event.html">Event</a> event) { |
| <a name="127" href="#127">127</a> <a href="../../../../org/apache/mina/statemachine/context/StateContext.html">StateContext</a> context = event.getContext(); |
| <a name="128" href="#128">128</a> |
| <a name="129" href="#129">129</a> <strong class="jxr_keyword">synchronized</strong> (context) { |
| <a name="130" href="#130">130</a> LinkedList<Event> eventQueue = eventQueueThreadLocal.get(); |
| <a name="131" href="#131">131</a> eventQueue.addLast(event); |
| <a name="132" href="#132">132</a> |
| <a name="133" href="#133">133</a> <strong class="jxr_keyword">if</strong> (processingThreadLocal.get()) { |
| <a name="134" href="#134">134</a> <em class="jxr_comment">/*</em> |
| <a name="135" href="#135">135</a> <em class="jxr_comment"> * This thread is already processing an event. Queue this </em> |
| <a name="136" href="#136">136</a> <em class="jxr_comment"> * event.</em> |
| <a name="137" href="#137">137</a> <em class="jxr_comment"> */</em> |
| <a name="138" href="#138">138</a> <strong class="jxr_keyword">if</strong> (log.isDebugEnabled()) { |
| <a name="139" href="#139">139</a> log.debug(<span class="jxr_string">"State machine called recursively. Queuing event "</span> + event |
| <a name="140" href="#140">140</a> + <span class="jxr_string">" for later processing."</span>); |
| <a name="141" href="#141">141</a> } |
| <a name="142" href="#142">142</a> } <strong class="jxr_keyword">else</strong> { |
| <a name="143" href="#143">143</a> processingThreadLocal.set(<strong class="jxr_keyword">true</strong>); |
| <a name="144" href="#144">144</a> <strong class="jxr_keyword">try</strong> { |
| <a name="145" href="#145">145</a> <strong class="jxr_keyword">if</strong> (context.getCurrentState() == <strong class="jxr_keyword">null</strong>) { |
| <a name="146" href="#146">146</a> context.setCurrentState(startState); |
| <a name="147" href="#147">147</a> } |
| <a name="148" href="#148">148</a> processEvents(eventQueue); |
| <a name="149" href="#149">149</a> } <strong class="jxr_keyword">finally</strong> { |
| <a name="150" href="#150">150</a> processingThreadLocal.set(false); |
| <a name="151" href="#151">151</a> } |
| <a name="152" href="#152">152</a> } |
| <a name="153" href="#153">153</a> } |
| <a name="154" href="#154">154</a> |
| <a name="155" href="#155">155</a> } |
| <a name="156" href="#156">156</a> |
| <a name="157" href="#157">157</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> processEvents(LinkedList<Event> eventQueue) { |
| <a name="158" href="#158">158</a> <strong class="jxr_keyword">while</strong> (!eventQueue.isEmpty()) { |
| <a name="159" href="#159">159</a> <a href="../../../../org/apache/mina/statemachine/event/Event.html">Event</a> event = eventQueue.removeFirst(); |
| <a name="160" href="#160">160</a> <a href="../../../../org/apache/mina/statemachine/context/StateContext.html">StateContext</a> context = event.getContext(); |
| <a name="161" href="#161">161</a> handle(context.getCurrentState(), event); |
| <a name="162" href="#162">162</a> } |
| <a name="163" href="#163">163</a> } |
| <a name="164" href="#164">164</a> |
| <a name="165" href="#165">165</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> handle(<a href="../../../../org/apache/mina/statemachine/State.html">State</a> state, <a href="../../../../org/apache/mina/statemachine/event/Event.html">Event</a> event) { |
| <a name="166" href="#166">166</a> <a href="../../../../org/apache/mina/statemachine/context/StateContext.html">StateContext</a> context = event.getContext(); |
| <a name="167" href="#167">167</a> |
| <a name="168" href="#168">168</a> <strong class="jxr_keyword">for</strong> (Transition t : state.getTransitions()) { |
| <a name="169" href="#169">169</a> <strong class="jxr_keyword">if</strong> (log.isDebugEnabled()) { |
| <a name="170" href="#170">170</a> log.debug(<span class="jxr_string">"Trying transition "</span> + t); |
| <a name="171" href="#171">171</a> } |
| <a name="172" href="#172">172</a> |
| <a name="173" href="#173">173</a> <strong class="jxr_keyword">try</strong> { |
| <a name="174" href="#174">174</a> <strong class="jxr_keyword">if</strong> (t.execute(event)) { |
| <a name="175" href="#175">175</a> <strong class="jxr_keyword">if</strong> (log.isDebugEnabled()) { |
| <a name="176" href="#176">176</a> log.debug(<span class="jxr_string">"Transition "</span> + t + <span class="jxr_string">" executed successfully."</span>); |
| <a name="177" href="#177">177</a> } |
| <a name="178" href="#178">178</a> setCurrentState(context, t.getNextState()); |
| <a name="179" href="#179">179</a> |
| <a name="180" href="#180">180</a> <strong class="jxr_keyword">return</strong>; |
| <a name="181" href="#181">181</a> } |
| <a name="182" href="#182">182</a> } <strong class="jxr_keyword">catch</strong> (BreakAndContinueException bace) { |
| <a name="183" href="#183">183</a> <strong class="jxr_keyword">if</strong> (log.isDebugEnabled()) { |
| <a name="184" href="#184">184</a> log.debug(<span class="jxr_string">"BreakAndContinueException thrown in "</span> |
| <a name="185" href="#185">185</a> + <span class="jxr_string">"transition "</span> + t |
| <a name="186" href="#186">186</a> + <span class="jxr_string">". Continuing with next transition."</span>); |
| <a name="187" href="#187">187</a> } |
| <a name="188" href="#188">188</a> } <strong class="jxr_keyword">catch</strong> (BreakAndGotoException bage) { |
| <a name="189" href="#189">189</a> <a href="../../../../org/apache/mina/statemachine/State.html">State</a> newState = getState(bage.getStateId()); |
| <a name="190" href="#190">190</a> |
| <a name="191" href="#191">191</a> <strong class="jxr_keyword">if</strong> (bage.isNow()) { |
| <a name="192" href="#192">192</a> <strong class="jxr_keyword">if</strong> (log.isDebugEnabled()) { |
| <a name="193" href="#193">193</a> log.debug(<span class="jxr_string">"BreakAndGotoException thrown in "</span> |
| <a name="194" href="#194">194</a> + <span class="jxr_string">"transition "</span> + t + <span class="jxr_string">". Moving to state "</span> |
| <a name="195" href="#195">195</a> + newState.getId() + <span class="jxr_string">" now."</span>); |
| <a name="196" href="#196">196</a> } |
| <a name="197" href="#197">197</a> setCurrentState(context, newState); |
| <a name="198" href="#198">198</a> handle(newState, event); |
| <a name="199" href="#199">199</a> } <strong class="jxr_keyword">else</strong> { |
| <a name="200" href="#200">200</a> <strong class="jxr_keyword">if</strong> (log.isDebugEnabled()) { |
| <a name="201" href="#201">201</a> log.debug(<span class="jxr_string">"BreakAndGotoException thrown in "</span> |
| <a name="202" href="#202">202</a> + <span class="jxr_string">"transition "</span> + t + <span class="jxr_string">". Moving to state "</span> |
| <a name="203" href="#203">203</a> + newState.getId() + <span class="jxr_string">" next."</span>); |
| <a name="204" href="#204">204</a> } |
| <a name="205" href="#205">205</a> setCurrentState(context, newState); |
| <a name="206" href="#206">206</a> } |
| <a name="207" href="#207">207</a> <strong class="jxr_keyword">return</strong>; |
| <a name="208" href="#208">208</a> } <strong class="jxr_keyword">catch</strong> (BreakAndCallException bace) { |
| <a name="209" href="#209">209</a> <a href="../../../../org/apache/mina/statemachine/State.html">State</a> newState = getState(bace.getStateId()); |
| <a name="210" href="#210">210</a> |
| <a name="211" href="#211">211</a> Stack<State> callStack = getCallStack(context); |
| <a name="212" href="#212">212</a> <a href="../../../../org/apache/mina/statemachine/State.html">State</a> returnTo = bace.getReturnToStateId() != <strong class="jxr_keyword">null</strong> |
| <a name="213" href="#213">213</a> ? getState(bace.getReturnToStateId()) |
| <a name="214" href="#214">214</a> : context.getCurrentState(); |
| <a name="215" href="#215">215</a> callStack.push(returnTo); |
| <a name="216" href="#216">216</a> |
| <a name="217" href="#217">217</a> <strong class="jxr_keyword">if</strong> (bace.isNow()) { |
| <a name="218" href="#218">218</a> <strong class="jxr_keyword">if</strong> (log.isDebugEnabled()) { |
| <a name="219" href="#219">219</a> log.debug(<span class="jxr_string">"BreakAndCallException thrown in "</span> |
| <a name="220" href="#220">220</a> + <span class="jxr_string">"transition "</span> + t + <span class="jxr_string">". Moving to state "</span> |
| <a name="221" href="#221">221</a> + newState.getId() + <span class="jxr_string">" now."</span>); |
| <a name="222" href="#222">222</a> } |
| <a name="223" href="#223">223</a> setCurrentState(context, newState); |
| <a name="224" href="#224">224</a> handle(newState, event); |
| <a name="225" href="#225">225</a> } <strong class="jxr_keyword">else</strong> { |
| <a name="226" href="#226">226</a> <strong class="jxr_keyword">if</strong> (log.isDebugEnabled()) { |
| <a name="227" href="#227">227</a> log.debug(<span class="jxr_string">"BreakAndCallException thrown in "</span> |
| <a name="228" href="#228">228</a> + <span class="jxr_string">"transition "</span> + t + <span class="jxr_string">". Moving to state "</span> |
| <a name="229" href="#229">229</a> + newState.getId() + <span class="jxr_string">" next."</span>); |
| <a name="230" href="#230">230</a> } |
| <a name="231" href="#231">231</a> setCurrentState(context, newState); |
| <a name="232" href="#232">232</a> } |
| <a name="233" href="#233">233</a> <strong class="jxr_keyword">return</strong>; |
| <a name="234" href="#234">234</a> } <strong class="jxr_keyword">catch</strong> (BreakAndReturnException bare) { |
| <a name="235" href="#235">235</a> Stack<State> callStack = getCallStack(context); |
| <a name="236" href="#236">236</a> <a href="../../../../org/apache/mina/statemachine/State.html">State</a> newState = callStack.pop(); |
| <a name="237" href="#237">237</a> |
| <a name="238" href="#238">238</a> <strong class="jxr_keyword">if</strong> (bare.isNow()) { |
| <a name="239" href="#239">239</a> <strong class="jxr_keyword">if</strong> (log.isDebugEnabled()) { |
| <a name="240" href="#240">240</a> log.debug(<span class="jxr_string">"BreakAndReturnException thrown in "</span> |
| <a name="241" href="#241">241</a> + <span class="jxr_string">"transition "</span> + t + <span class="jxr_string">". Moving to state "</span> |
| <a name="242" href="#242">242</a> + newState.getId() + <span class="jxr_string">" now."</span>); |
| <a name="243" href="#243">243</a> } |
| <a name="244" href="#244">244</a> setCurrentState(context, newState); |
| <a name="245" href="#245">245</a> handle(newState, event); |
| <a name="246" href="#246">246</a> } <strong class="jxr_keyword">else</strong> { |
| <a name="247" href="#247">247</a> <strong class="jxr_keyword">if</strong> (log.isDebugEnabled()) { |
| <a name="248" href="#248">248</a> log.debug(<span class="jxr_string">"BreakAndReturnException thrown in "</span> |
| <a name="249" href="#249">249</a> + <span class="jxr_string">"transition "</span> + t + <span class="jxr_string">". Moving to state "</span> |
| <a name="250" href="#250">250</a> + newState.getId() + <span class="jxr_string">" next."</span>); |
| <a name="251" href="#251">251</a> } |
| <a name="252" href="#252">252</a> setCurrentState(context, newState); |
| <a name="253" href="#253">253</a> } |
| <a name="254" href="#254">254</a> <strong class="jxr_keyword">return</strong>; |
| <a name="255" href="#255">255</a> } |
| <a name="256" href="#256">256</a> } |
| <a name="257" href="#257">257</a> |
| <a name="258" href="#258">258</a> <em class="jxr_comment">/*</em> |
| <a name="259" href="#259">259</a> <em class="jxr_comment"> * No transition could handle the event. Try with the parent state if</em> |
| <a name="260" href="#260">260</a> <em class="jxr_comment"> * there is one.</em> |
| <a name="261" href="#261">261</a> <em class="jxr_comment"> */</em> |
| <a name="262" href="#262">262</a> |
| <a name="263" href="#263">263</a> <strong class="jxr_keyword">if</strong> (state.getParent() != <strong class="jxr_keyword">null</strong>) { |
| <a name="264" href="#264">264</a> handle(state.getParent(), event); |
| <a name="265" href="#265">265</a> } <strong class="jxr_keyword">else</strong> { |
| <a name="266" href="#266">266</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/mina/statemachine/event/UnhandledEventException.html">UnhandledEventException</a>(event); |
| <a name="267" href="#267">267</a> } |
| <a name="268" href="#268">268</a> } |
| <a name="269" href="#269">269</a> |
| <a name="270" href="#270">270</a> <strong class="jxr_keyword">private</strong> Stack<State> getCallStack(<a href="../../../../org/apache/mina/statemachine/context/StateContext.html">StateContext</a> context) { |
| <a name="271" href="#271">271</a> @SuppressWarnings(<span class="jxr_string">"unchecked"</span>) |
| <a name="272" href="#272">272</a> Stack<State> callStack = (Stack<State>) context.getAttribute(CALL_STACK); |
| <a name="273" href="#273">273</a> <strong class="jxr_keyword">if</strong> (callStack == <strong class="jxr_keyword">null</strong>) { |
| <a name="274" href="#274">274</a> callStack = <strong class="jxr_keyword">new</strong> Stack<State>(); |
| <a name="275" href="#275">275</a> context.setAttribute(CALL_STACK, callStack); |
| <a name="276" href="#276">276</a> } |
| <a name="277" href="#277">277</a> <strong class="jxr_keyword">return</strong> callStack; |
| <a name="278" href="#278">278</a> } |
| <a name="279" href="#279">279</a> |
| <a name="280" href="#280">280</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> setCurrentState(<a href="../../../../org/apache/mina/statemachine/context/StateContext.html">StateContext</a> context, <a href="../../../../org/apache/mina/statemachine/State.html">State</a> newState) { |
| <a name="281" href="#281">281</a> <strong class="jxr_keyword">if</strong> (newState != <strong class="jxr_keyword">null</strong>) { |
| <a name="282" href="#282">282</a> <strong class="jxr_keyword">if</strong> (log.isDebugEnabled()) { |
| <a name="283" href="#283">283</a> <strong class="jxr_keyword">if</strong> (newState != context.getCurrentState()) { |
| <a name="284" href="#284">284</a> log.debug(<span class="jxr_string">"Leaving state "</span> + context.getCurrentState().getId()); |
| <a name="285" href="#285">285</a> log.debug(<span class="jxr_string">"Entering state "</span> + newState.getId()); |
| <a name="286" href="#286">286</a> } |
| <a name="287" href="#287">287</a> } |
| <a name="288" href="#288">288</a> context.setCurrentState(newState); |
| <a name="289" href="#289">289</a> } |
| <a name="290" href="#290">290</a> } |
| <a name="291" href="#291">291</a> |
| <a name="292" href="#292">292</a> } |
| </pre> |
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