methodtransition.html

MINA+API 关于MINA的API

<a name="100" href="#100">100</a> <em class="jxr_javadoccomment">     * </em>
<a name="101" href="#101">101</a> <em class="jxr_javadoccomment">     * @param eventId the {@link Event} id.</em>
<a name="102" href="#102">102</a> <em class="jxr_javadoccomment">     * @param nextState the next {@link State}.</em>
<a name="103" href="#103">103</a> <em class="jxr_javadoccomment">     * @param target the target object.</em>
<a name="104" href="#104">104</a> <em class="jxr_javadoccomment">     * @throws NoSuchMethodException if no method could be found with a name </em>
<a name="105" href="#105">105</a> <em class="jxr_javadoccomment">     *         equal to the {@link Event} id.</em>
<a name="106" href="#106">106</a> <em class="jxr_javadoccomment">     * @throws AmbiguousMethodException if more than one method was found with </em>
<a name="107" href="#107">107</a> <em class="jxr_javadoccomment">     *         a name equal to the {@link Event} id.</em>
<a name="108" href="#108">108</a> <em class="jxr_javadoccomment">     */</em>
<a name="109" href="#109">109</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/mina/statemachine/transition/MethodTransition.html">MethodTransition</a>(Object eventId, <a href="../../../../../org/apache/mina/statemachine/State.html">State</a> nextState, Object target) {
<a name="110" href="#110">110</a>         <strong class="jxr_keyword">this</strong>(eventId, nextState, eventId.toString(), target);
<a name="111" href="#111">111</a>     }
<a name="112" href="#112">112</a>     
<a name="113" href="#113">113</a>     <em class="jxr_javadoccomment">/**</em>
<a name="114" href="#114">114</a> <em class="jxr_javadoccomment">     * Creates a new instance which will loopback to the same {@link State} </em>
<a name="115" href="#115">115</a> <em class="jxr_javadoccomment">     * for the specified {@link Event} id. The target {@link Method} will</em>
<a name="116" href="#116">116</a> <em class="jxr_javadoccomment">     * be the method in the specified target object with the same name as the</em>
<a name="117" href="#117">117</a> <em class="jxr_javadoccomment">     * specified {@link Event} id.</em>
<a name="118" href="#118">118</a> <em class="jxr_javadoccomment">     * </em>
<a name="119" href="#119">119</a> <em class="jxr_javadoccomment">     * @param eventId the {@link Event} id.</em>
<a name="120" href="#120">120</a> <em class="jxr_javadoccomment">     * @param target the target object.</em>
<a name="121" href="#121">121</a> <em class="jxr_javadoccomment">     * @throws NoSuchMethodException if no method could be found with a name </em>
<a name="122" href="#122">122</a> <em class="jxr_javadoccomment">     *         equal to the {@link Event} id.</em>
<a name="123" href="#123">123</a> <em class="jxr_javadoccomment">     * @throws AmbiguousMethodException if more than one method was found with </em>
<a name="124" href="#124">124</a> <em class="jxr_javadoccomment">     *         a name equal to the {@link Event} id.</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> <a href="../../../../../org/apache/mina/statemachine/transition/MethodTransition.html">MethodTransition</a>(Object eventId, Object target) {
<a name="127" href="#127">127</a>         <strong class="jxr_keyword">this</strong>(eventId, eventId.toString(), target);
<a name="128" href="#128">128</a>     }
<a name="129" href="#129">129</a> 
<a name="130" href="#130">130</a>     <em class="jxr_javadoccomment">/**</em>
<a name="131" href="#131">131</a> <em class="jxr_javadoccomment">     * Creates a new instance which will loopback to the same {@link State} </em>
<a name="132" href="#132">132</a> <em class="jxr_javadoccomment">     * for the specified {@link Event} id.</em>
<a name="133" href="#133">133</a> <em class="jxr_javadoccomment">     * </em>
<a name="134" href="#134">134</a> <em class="jxr_javadoccomment">     * @param eventId the {@link Event} id.</em>
<a name="135" href="#135">135</a> <em class="jxr_javadoccomment">     * @param methodName the name of the target {@link Method}.</em>
<a name="136" href="#136">136</a> <em class="jxr_javadoccomment">     * @param target the target object.</em>
<a name="137" href="#137">137</a> <em class="jxr_javadoccomment">     * @throws NoSuchMethodException if the method could not be found.</em>
<a name="138" href="#138">138</a> <em class="jxr_javadoccomment">     * @throws AmbiguousMethodException if there are more than one method with </em>
<a name="139" href="#139">139</a> <em class="jxr_javadoccomment">     *         the specified name.</em>
<a name="140" href="#140">140</a> <em class="jxr_javadoccomment">     */</em>
<a name="141" href="#141">141</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/mina/statemachine/transition/MethodTransition.html">MethodTransition</a>(Object eventId, String methodName, Object target) {
<a name="142" href="#142">142</a>         <strong class="jxr_keyword">this</strong>(eventId, <strong class="jxr_keyword">null</strong>, methodName, target);
<a name="143" href="#143">143</a>     }
<a name="144" href="#144">144</a>     
<a name="145" href="#145">145</a>     <em class="jxr_javadoccomment">/**</em>
<a name="146" href="#146">146</a> <em class="jxr_javadoccomment">     * Creates a new instance with the specified {@link State} as next state </em>
<a name="147" href="#147">147</a> <em class="jxr_javadoccomment">     * and for the specified {@link Event} id.</em>
<a name="148" href="#148">148</a> <em class="jxr_javadoccomment">     * </em>
<a name="149" href="#149">149</a> <em class="jxr_javadoccomment">     * @param eventId the {@link Event} id.</em>
<a name="150" href="#150">150</a> <em class="jxr_javadoccomment">     * @param nextState the next {@link State}.</em>
<a name="151" href="#151">151</a> <em class="jxr_javadoccomment">     * @param methodName the name of the target {@link Method}.</em>
<a name="152" href="#152">152</a> <em class="jxr_javadoccomment">     * @param target the target object.</em>
<a name="153" href="#153">153</a> <em class="jxr_javadoccomment">     * @throws NoSuchMethodException if the method could not be found.</em>
<a name="154" href="#154">154</a> <em class="jxr_javadoccomment">     * @throws AmbiguousMethodException if there are more than one method with </em>
<a name="155" href="#155">155</a> <em class="jxr_javadoccomment">     *         the specified name.</em>
<a name="156" href="#156">156</a> <em class="jxr_javadoccomment">     */</em>
<a name="157" href="#157">157</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/mina/statemachine/transition/MethodTransition.html">MethodTransition</a>(Object eventId, <a href="../../../../../org/apache/mina/statemachine/State.html">State</a> nextState, String methodName, Object target) {
<a name="158" href="#158">158</a>         <strong class="jxr_keyword">super</strong>(eventId, nextState);
<a name="159" href="#159">159</a> 
<a name="160" href="#160">160</a>         <strong class="jxr_keyword">this</strong>.target = target;
<a name="161" href="#161">161</a>         
<a name="162" href="#162">162</a>         Method[] candidates = target.getClass().getMethods();
<a name="163" href="#163">163</a>         Method result = <strong class="jxr_keyword">null</strong>;
<a name="164" href="#164">164</a>         <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; candidates.length; i++) {
<a name="165" href="#165">165</a>             <strong class="jxr_keyword">if</strong> (candidates[i].getName().equals(methodName)) {
<a name="166" href="#166">166</a>                 <strong class="jxr_keyword">if</strong> (result != <strong class="jxr_keyword">null</strong>) {
<a name="167" href="#167">167</a>                     <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/mina/statemachine/transition/AmbiguousMethodException.html">AmbiguousMethodException</a>(methodName);
<a name="168" href="#168">168</a>                 }
<a name="169" href="#169">169</a>                 result = candidates[i];
<a name="170" href="#170">170</a>             }
<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">if</strong> (result == <strong class="jxr_keyword">null</strong>) {
<a name="174" href="#174">174</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/mina/statemachine/transition/NoSuchMethodException.html">NoSuchMethodException</a>(methodName);
<a name="175" href="#175">175</a>         }
<a name="176" href="#176">176</a>         
<a name="177" href="#177">177</a>         <strong class="jxr_keyword">this</strong>.method = result;
<a name="178" href="#178">178</a>     }
<a name="179" href="#179">179</a>     
<a name="180" href="#180">180</a>     <em class="jxr_javadoccomment">/**</em>
<a name="181" href="#181">181</a> <em class="jxr_javadoccomment">     * Returns the target {@link Method}.</em>
<a name="182" href="#182">182</a> <em class="jxr_javadoccomment">     * </em>
<a name="183" href="#183">183</a> <em class="jxr_javadoccomment">     * @return the method.</em>
<a name="184" href="#184">184</a> <em class="jxr_javadoccomment">     */</em>
<a name="185" href="#185">185</a>     <strong class="jxr_keyword">public</strong> Method getMethod() {
<a name="186" href="#186">186</a>         <strong class="jxr_keyword">return</strong> method;
<a name="187" href="#187">187</a>     }
<a name="188" href="#188">188</a> 
<a name="189" href="#189">189</a>     <em class="jxr_javadoccomment">/**</em>
<a name="190" href="#190">190</a> <em class="jxr_javadoccomment">     * Returns the target object.</em>
<a name="191" href="#191">191</a> <em class="jxr_javadoccomment">     * </em>
<a name="192" href="#192">192</a> <em class="jxr_javadoccomment">     * @return the target object.</em>
<a name="193" href="#193">193</a> <em class="jxr_javadoccomment">     */</em>
<a name="194" href="#194">194</a>     <strong class="jxr_keyword">public</strong> Object getTarget() {
<a name="195" href="#195">195</a>         <strong class="jxr_keyword">return</strong> target;
<a name="196" href="#196">196</a>     }
<a name="197" href="#197">197</a> 
<a name="198" href="#198">198</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> doExecute(<a href="../../../../../org/apache/mina/statemachine/event/Event.html">Event</a> event) {
<a name="199" href="#199">199</a>         Class&lt;?&gt;[] types = method.getParameterTypes();
<a name="200" href="#200">200</a>         
<a name="201" href="#201">201</a>         <strong class="jxr_keyword">if</strong> (types.length == 0) {
<a name="202" href="#202">202</a>             invokeMethod(EMPTY_ARGUMENTS);
<a name="203" href="#203">203</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a name="204" href="#204">204</a>         }
<a name="205" href="#205">205</a>         
<a name="206" href="#206">206</a>         <strong class="jxr_keyword">if</strong> (types.length &gt; 2 + event.getArguments().length) {
<a name="207" href="#207">207</a>             <strong class="jxr_keyword">return</strong> false;
<a name="208" href="#208">208</a>         }