statemachinefactory.html

MINA+API 关于MINA的API

<a name="247" href="#247">247</a>             <strong class="jxr_keyword">if</strong> (!f.isAccessible()) {
<a name="248" href="#248">248</a>                 f.setAccessible(<strong class="jxr_keyword">true</strong>);
<a name="249" href="#249">249</a>             }
<a name="250" href="#250">250</a> 
<a name="251" href="#251">251</a>             fields.add(f);
<a name="252" href="#252">252</a>         }
<a name="253" href="#253">253</a> 
<a name="254" href="#254">254</a>         <strong class="jxr_keyword">return</strong> fields;
<a name="255" href="#255">255</a>     }
<a name="256" href="#256">256</a>         
<a name="257" href="#257">257</a>     <strong class="jxr_keyword">static</strong> <a href="../../../../org/apache/mina/statemachine/annotation/State.html">State</a>[] createStates(List&lt;Field&gt; fields) {
<a name="258" href="#258">258</a>         LinkedHashMap&lt;String, State&gt; states = <strong class="jxr_keyword">new</strong> LinkedHashMap&lt;String, State&gt;();
<a name="259" href="#259">259</a> 
<a name="260" href="#260">260</a>         <strong class="jxr_keyword">while</strong> (!fields.isEmpty()) {
<a name="261" href="#261">261</a>             <strong class="jxr_keyword">int</strong> size = fields.size();
<a name="262" href="#262">262</a>             <strong class="jxr_keyword">int</strong> numStates = states.size();
<a name="263" href="#263">263</a>             <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; size; i++) {
<a name="264" href="#264">264</a>                 Field f = fields.remove(0);
<a name="265" href="#265">265</a> 
<a name="266" href="#266">266</a>                 String value = <strong class="jxr_keyword">null</strong>;
<a name="267" href="#267">267</a>                 <strong class="jxr_keyword">try</strong> {
<a name="268" href="#268">268</a>                     value = (String) f.get(<strong class="jxr_keyword">null</strong>);
<a name="269" href="#269">269</a>                 } <strong class="jxr_keyword">catch</strong> (IllegalAccessException iae) {
<a name="270" href="#270">270</a>                     <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/mina/statemachine/StateMachineCreationException.html">StateMachineCreationException</a>(<span class="jxr_string">"Error encountered when "</span> 
<a name="271" href="#271">271</a>                             + <span class="jxr_string">"processing field "</span> + f + <span class="jxr_string">"."</span>, iae);
<a name="272" href="#272">272</a>                 }
<a name="273" href="#273">273</a> 
<a name="274" href="#274">274</a>                 org.apache.mina.statemachine.annotation.State stateAnnotation = f
<a name="275" href="#275">275</a>                         .getAnnotation(org.apache.mina.statemachine.annotation.State.<strong class="jxr_keyword">class</strong>);
<a name="276" href="#276">276</a>                 <strong class="jxr_keyword">if</strong> (stateAnnotation.value().equals(org.apache.mina.statemachine.annotation.State.ROOT)) {
<a name="277" href="#277">277</a>                     states.put(value, <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/mina/statemachine/annotation/State.html">State</a>(value));
<a name="278" href="#278">278</a>                 } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (states.containsKey(stateAnnotation.value())) {
<a name="279" href="#279">279</a>                     states.put(value, <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/mina/statemachine/annotation/State.html">State</a>(value, states.get(stateAnnotation.value())));
<a name="280" href="#280">280</a>                 } <strong class="jxr_keyword">else</strong> {
<a name="281" href="#281">281</a>                     <em class="jxr_comment">// Move to the back of the list of fields for later</em>
<a name="282" href="#282">282</a>                     <em class="jxr_comment">// processing</em>
<a name="283" href="#283">283</a>                     fields.add(f);
<a name="284" href="#284">284</a>                 }
<a name="285" href="#285">285</a>             }
<a name="286" href="#286">286</a> 
<a name="287" href="#287">287</a>             <em class="jxr_comment">/*</em>
<a name="288" href="#288">288</a> <em class="jxr_comment">             * If no new states were added to states during this iteration it </em>
<a name="289" href="#289">289</a> <em class="jxr_comment">             * means that all fields in fields specify non-existent parents.</em>
<a name="290" href="#290">290</a> <em class="jxr_comment">             */</em>
<a name="291" href="#291">291</a>             <strong class="jxr_keyword">if</strong> (states.size() == numStates) {
<a name="292" href="#292">292</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/mina/statemachine/StateMachineCreationException.html">StateMachineCreationException</a>(<span class="jxr_string">"Error encountered while creating "</span>
<a name="293" href="#293">293</a>                         + <span class="jxr_string">"FSM. The following fields specify non-existing "</span> 
<a name="294" href="#294">294</a>                         + <span class="jxr_string">"parent states: "</span> + fields);
<a name="295" href="#295">295</a>             }
<a name="296" href="#296">296</a>         }
<a name="297" href="#297">297</a> 
<a name="298" href="#298">298</a>         <strong class="jxr_keyword">return</strong> states.values().toArray(<strong class="jxr_keyword">new</strong> State[0]);
<a name="299" href="#299">299</a>     }
<a name="300" href="#300">300</a>     
<a name="301" href="#301">301</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/mina/statemachine/StateMachineFactory.html">TransitionWrapper</a> {
<a name="302" href="#302">302</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Class&lt;? <strong class="jxr_keyword">extends</strong> Annotation&gt; transitionClazz;
<a name="303" href="#303">303</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Annotation annotation;
<a name="304" href="#304">304</a>         <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/mina/statemachine/StateMachineFactory.html">TransitionWrapper</a>(Class&lt;? <strong class="jxr_keyword">extends</strong> Annotation&gt; transitionClazz, Annotation annotation) {
<a name="305" href="#305">305</a>             <strong class="jxr_keyword">this</strong>.transitionClazz = transitionClazz;
<a name="306" href="#306">306</a>             <strong class="jxr_keyword">this</strong>.annotation = annotation;
<a name="307" href="#307">307</a>         }
<a name="308" href="#308">308</a>         Object[] on() {
<a name="309" href="#309">309</a>             <strong class="jxr_keyword">return</strong> getParameter(<span class="jxr_string">"on"</span>, Object[].<strong class="jxr_keyword">class</strong>);
<a name="310" href="#310">310</a>         }
<a name="311" href="#311">311</a>         String[] in() {
<a name="312" href="#312">312</a>             <strong class="jxr_keyword">return</strong> getParameter(<span class="jxr_string">"in"</span>, String[].<strong class="jxr_keyword">class</strong>);
<a name="313" href="#313">313</a>         }
<a name="314" href="#314">314</a>         String next() {
<a name="315" href="#315">315</a>             <strong class="jxr_keyword">return</strong> getParameter(<span class="jxr_string">"next"</span>, String.<strong class="jxr_keyword">class</strong>);
<a name="316" href="#316">316</a>         }
<a name="317" href="#317">317</a>         <strong class="jxr_keyword">int</strong> weight() {
<a name="318" href="#318">318</a>             <strong class="jxr_keyword">return</strong> getParameter(<span class="jxr_string">"weight"</span>, Integer.TYPE);
<a name="319" href="#319">319</a>         }
<a name="320" href="#320">320</a>         @SuppressWarnings(<span class="jxr_string">"unchecked"</span>)
<a name="321" href="#321">321</a>         <strong class="jxr_keyword">private</strong> &lt;T&gt; T getParameter(String name, Class&lt;T&gt; returnType) {
<a name="322" href="#322">322</a>             <strong class="jxr_keyword">try</strong> {
<a name="323" href="#323">323</a>                 Method m = transitionClazz.getMethod(name);
<a name="324" href="#324">324</a>                 <strong class="jxr_keyword">if</strong> (!returnType.isAssignableFrom(m.getReturnType())) {
<a name="325" href="#325">325</a>                     <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/mina/statemachine/transition/NoSuchMethodException.html">NoSuchMethodException</a>();
<a name="326" href="#326">326</a>                 }
<a name="327" href="#327">327</a>                 <strong class="jxr_keyword">return</strong> (T) m.invoke(annotation);
<a name="328" href="#328">328</a>             } <strong class="jxr_keyword">catch</strong> (Throwable t) {
<a name="329" href="#329">329</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/mina/statemachine/StateMachineCreationException.html">StateMachineCreationException</a>(<span class="jxr_string">"Could not get parameter '"</span> 
<a name="330" href="#330">330</a>                         + name + <span class="jxr_string">"' from Transition annotation "</span> + transitionClazz);
<a name="331" href="#331">331</a>             }
<a name="332" href="#332">332</a>         }
<a name="333" href="#333">333</a>     }
<a name="334" href="#334">334</a>     
<a name="335" href="#335">335</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/mina/statemachine/StateMachineFactory.html">TransitionsWrapper</a> {
<a name="336" href="#336">336</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Class&lt;? <strong class="jxr_keyword">extends</strong> Annotation&gt; transitionsclazz;
<a name="337" href="#337">337</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Class&lt;? <strong class="jxr_keyword">extends</strong> Annotation&gt; transitionClazz;
<a name="338" href="#338">338</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Annotation annotation;
<a name="339" href="#339">339</a>         <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/mina/statemachine/StateMachineFactory.html">TransitionsWrapper</a>(Class&lt;? <strong class="jxr_keyword">extends</strong> Annotation&gt; transitionClazz, 
<a name="340" href="#340">340</a>                 Class&lt;? <strong class="jxr_keyword">extends</strong> Annotation&gt; transitionsclazz, Annotation annotation) {
<a name="341" href="#341">341</a>             <strong class="jxr_keyword">this</strong>.transitionClazz = transitionClazz;
<a name="342" href="#342">342</a>             <strong class="jxr_keyword">this</strong>.transitionsclazz = transitionsclazz;
<a name="343" href="#343">343</a>             <strong class="jxr_keyword">this</strong>.annotation = annotation;
<a name="344" href="#344">344</a>         }
<a name="345" href="#345">345</a>         <a href="../../../../org/apache/mina/statemachine/StateMachineFactory.html">TransitionWrapper</a>[] value() {
<a name="346" href="#346">346</a>             Annotation[] annos = getParameter(<span class="jxr_string">"value"</span>, Annotation[].<strong class="jxr_keyword">class</strong>);
<a name="347" href="#347">347</a>             <a href="../../../../org/apache/mina/statemachine/StateMachineFactory.html">TransitionWrapper</a>[] wrappers = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/mina/statemachine/StateMachineFactory.html">TransitionWrapper</a>[annos.length];
<a name="348" href="#348">348</a>             <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; annos.length; i++) {
<a name="349" href="#349">349</a>                 wrappers[i] = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/mina/statemachine/StateMachineFactory.html">TransitionWrapper</a>(transitionClazz, annos[i]);
<a name="350" href="#350">350</a>             }
<a name="351" href="#351">351</a>             <strong class="jxr_keyword">return</strong> wrappers;
<a name="352" href="#352">352</a>         }
<a name="353" href="#353">353</a>         @SuppressWarnings(<span class="jxr_string">"unchecked"</span>)
<a name="354" href="#354">354</a>         <strong class="jxr_keyword">private</strong> &lt;T&gt; T getParameter(String name, Class&lt;T&gt; returnType) {
<a name="355" href="#355">355</a>             <strong class="jxr_keyword">try</strong> {
<a name="356" href="#356">356</a>                 Method m = transitionsclazz.getMethod(name);
<a name="357" href="#357">357</a>                 <strong class="jxr_keyword">if</strong> (!returnType.isAssignableFrom(m.getReturnType())) {
<a name="358" href="#358">358</a>                     <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/mina/statemachine/transition/NoSuchMethodException.html">NoSuchMethodException</a>();
<a name="359" href="#359">359</a>                 }
<a name="360" href="#360">360</a>                 <strong class="jxr_keyword">return</strong> (T) m.invoke(annotation);
<a name="361" href="#361">361</a>             } <strong class="jxr_keyword">catch</strong> (Throwable t) {
<a name="362" href="#362">362</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/mina/statemachine/StateMachineCreationException.html">StateMachineCreationException</a>(<span class="jxr_string">"Could not get parameter '"</span> 
<a name="363" href="#363">363</a>                         + name + <span class="jxr_string">"' from Transitions annotation "</span> + transitionsclazz);
<a name="364" href="#364">364</a>             }
<a name="365" href="#365">365</a>         }
<a name="366" href="#366">366</a>     }
<a name="367" href="#367">367</a> }
</pre>
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