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| <a name="1" href="#1">1</a> <strong class="jxr_keyword">package</strong> org.apache.velocity.runtime.parser.node; |
| <a name="2" href="#2">2</a> |
| <a name="3" href="#3">3</a> <em class="jxr_comment">/*</em> |
| <a name="4" href="#4">4</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one</em> |
| <a name="5" href="#5">5</a> <em class="jxr_comment"> * or more contributor license agreements. See the NOTICE file</em> |
| <a name="6" href="#6">6</a> <em class="jxr_comment"> * distributed with this work for additional information</em> |
| <a name="7" href="#7">7</a> <em class="jxr_comment"> * regarding copyright ownership. The ASF licenses this file</em> |
| <a name="8" href="#8">8</a> <em class="jxr_comment"> * to you under the Apache License, Version 2.0 (the</em> |
| <a name="9" href="#9">9</a> <em class="jxr_comment"> * "License"); you may not use this file except in compliance</em> |
| <a name="10" href="#10">10</a> <em class="jxr_comment"> * with the License. You may obtain a copy of the License at</em> |
| <a name="11" href="#11">11</a> <em class="jxr_comment"> *</em> |
| <a name="12" href="#12">12</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="13" href="#13">13</a> <em class="jxr_comment"> *</em> |
| <a name="14" href="#14">14</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing,</em> |
| <a name="15" href="#15">15</a> <em class="jxr_comment"> * software distributed under the License is distributed on an</em> |
| <a name="16" href="#16">16</a> <em class="jxr_comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</em> |
| <a name="17" href="#17">17</a> <em class="jxr_comment"> * KIND, either express or implied. See the License for the</em> |
| <a name="18" href="#18">18</a> <em class="jxr_comment"> * specific language governing permissions and limitations</em> |
| <a name="19" href="#19">19</a> <em class="jxr_comment"> * under the License. </em> |
| <a name="20" href="#20">20</a> <em class="jxr_comment"> */</em> |
| <a name="21" href="#21">21</a> |
| <a name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> java.lang.reflect.InvocationTargetException; |
| <a name="23" href="#23">23</a> |
| <a name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> org.apache.commons.lang.ArrayUtils; |
| <a name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> org.apache.commons.lang.StringUtils; |
| <a name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> org.apache.velocity.app.event.EventHandlerUtil; |
| <a name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> org.apache.velocity.context.InternalContextAdapter; |
| <a name="28" href="#28">28</a> <strong class="jxr_keyword">import</strong> org.apache.velocity.exception.MethodInvocationException; |
| <a name="29" href="#29">29</a> <strong class="jxr_keyword">import</strong> org.apache.velocity.exception.TemplateInitException; |
| <a name="30" href="#30">30</a> <strong class="jxr_keyword">import</strong> org.apache.velocity.runtime.parser.Parser; |
| <a name="31" href="#31">31</a> <strong class="jxr_keyword">import</strong> org.apache.velocity.runtime.parser.ParserVisitor; |
| <a name="32" href="#32">32</a> <strong class="jxr_keyword">import</strong> org.apache.velocity.util.introspection.Info; |
| <a name="33" href="#33">33</a> <strong class="jxr_keyword">import</strong> org.apache.velocity.util.introspection.IntrospectionCacheData; |
| <a name="34" href="#34">34</a> <strong class="jxr_keyword">import</strong> org.apache.velocity.util.introspection.VelMethod; |
| <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"> * ASTMethod.java</em> |
| <a name="38" href="#38">38</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="39" href="#39">39</a> <em class="jxr_javadoccomment"> * Method support for references : $foo.method()</em> |
| <a name="40" href="#40">40</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="41" href="#41">41</a> <em class="jxr_javadoccomment"> * NOTE :</em> |
| <a name="42" href="#42">42</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="43" href="#43">43</a> <em class="jxr_javadoccomment"> * introspection is now done at render time.</em> |
| <a name="44" href="#44">44</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="45" href="#45">45</a> <em class="jxr_javadoccomment"> * Please look at the Parser.jjt file which is</em> |
| <a name="46" href="#46">46</a> <em class="jxr_javadoccomment"> * what controls the generation of this class.</em> |
| <a name="47" href="#47">47</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="48" href="#48">48</a> <em class="jxr_javadoccomment"> * @author <a href="<a href="mailto:jvanzyl@apache.org" target="alexandria_uri">mailto:jvanzyl@apache.org</a>">Jason van Zyl</a></em> |
| <a name="49" href="#49">49</a> <em class="jxr_javadoccomment"> * @author <a href="<a href="mailto:geirm@optonline.net" target="alexandria_uri">mailto:geirm@optonline.net</a>">Geir Magnusson Jr.</a></em> |
| <a name="50" href="#50">50</a> <em class="jxr_javadoccomment"> * @version $Id: ASTMethod.java 489650 2006-12-22 13:31:58Z cbrisson $</em> |
| <a name="51" href="#51">51</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="52" href="#52">52</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/velocity/runtime/parser/node/ASTMethod.html">ASTMethod</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../../org/apache/velocity/runtime/parser/node/SimpleNode.html">SimpleNode</a> |
| <a name="53" href="#53">53</a> { |
| <a name="54" href="#54">54</a> <strong class="jxr_keyword">private</strong> String methodName = <span class="jxr_string">""</span>; |
| <a name="55" href="#55">55</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> paramCount = 0; |
| <a name="56" href="#56">56</a> |
| <a name="57" href="#57">57</a> <strong class="jxr_keyword">protected</strong> <a href="../../../../../../org/apache/velocity/util/introspection/Info.html">Info</a> uberInfo; |
| <a name="58" href="#58">58</a> |
| <a name="59" href="#59">59</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="60" href="#60">60</a> <em class="jxr_javadoccomment"> * @param id</em> |
| <a name="61" href="#61">61</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="62" href="#62">62</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/apache/velocity/runtime/parser/node/ASTMethod.html">ASTMethod</a>(<strong class="jxr_keyword">int</strong> id) |
| <a name="63" href="#63">63</a> { |
| <a name="64" href="#64">64</a> <strong class="jxr_keyword">super</strong>(id); |
| <a name="65" href="#65">65</a> } |
| <a name="66" href="#66">66</a> |
| <a name="67" href="#67">67</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="68" href="#68">68</a> <em class="jxr_javadoccomment"> * @param p</em> |
| <a name="69" href="#69">69</a> <em class="jxr_javadoccomment"> * @param id</em> |
| <a name="70" href="#70">70</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="71" href="#71">71</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/apache/velocity/runtime/parser/node/ASTMethod.html">ASTMethod</a>(<a href="../../../../../../org/apache/velocity/runtime/parser/Parser.html">Parser</a> p, <strong class="jxr_keyword">int</strong> id) |
| <a name="72" href="#72">72</a> { |
| <a name="73" href="#73">73</a> <strong class="jxr_keyword">super</strong>(p, id); |
| <a name="74" href="#74">74</a> } |
| <a name="75" href="#75">75</a> |
| <a name="76" href="#76">76</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="77" href="#77">77</a> <em class="jxr_javadoccomment"> * @see org.apache.velocity.runtime.parser.node.SimpleNode#jjtAccept(org.apache.velocity.runtime.parser.ParserVisitor, java.lang.Object)</em> |
| <a name="78" href="#78">78</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="79" href="#79">79</a> <strong class="jxr_keyword">public</strong> Object jjtAccept(<a href="../../../../../../org/apache/velocity/runtime/parser/ParserVisitor.html">ParserVisitor</a> visitor, Object data) |
| <a name="80" href="#80">80</a> { |
| <a name="81" href="#81">81</a> <strong class="jxr_keyword">return</strong> visitor.visit(<strong class="jxr_keyword">this</strong>, data); |
| <a name="82" href="#82">82</a> } |
| <a name="83" href="#83">83</a> |
| <a name="84" href="#84">84</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="85" href="#85">85</a> <em class="jxr_javadoccomment"> * simple init - init our subtree and get what we can from</em> |
| <a name="86" href="#86">86</a> <em class="jxr_javadoccomment"> * the AST</em> |
| <a name="87" href="#87">87</a> <em class="jxr_javadoccomment"> * @param context</em> |
| <a name="88" href="#88">88</a> <em class="jxr_javadoccomment"> * @param data</em> |
| <a name="89" href="#89">89</a> <em class="jxr_javadoccomment"> * @return The init result</em> |
| <a name="90" href="#90">90</a> <em class="jxr_javadoccomment"> * @throws TemplateInitException</em> |
| <a name="91" href="#91">91</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="92" href="#92">92</a> <strong class="jxr_keyword">public</strong> Object init( InternalContextAdapter context, Object data) |
| <a name="93" href="#93">93</a> <strong class="jxr_keyword">throws</strong> <a href="../../../../../../org/apache/velocity/exception/TemplateInitException.html">TemplateInitException</a> |
| <a name="94" href="#94">94</a> { |
| <a name="95" href="#95">95</a> <strong class="jxr_keyword">super</strong>.init( context, data ); |
| <a name="96" href="#96">96</a> |
| <a name="97" href="#97">97</a> <em class="jxr_comment">/*</em> |
| <a name="98" href="#98">98</a> <em class="jxr_comment"> * make an uberinfo - saves new's later on</em> |
| <a name="99" href="#99">99</a> <em class="jxr_comment"> */</em> |
| <a name="100" href="#100">100</a> |
| <a name="101" href="#101">101</a> uberInfo = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/velocity/util/introspection/Info.html">Info</a>(context.getCurrentTemplateName(), |
| <a name="102" href="#102">102</a> getLine(),getColumn()); |
| <a name="103" href="#103">103</a> <em class="jxr_comment">/*</em> |
| <a name="104" href="#104">104</a> <em class="jxr_comment"> * this is about all we can do</em> |
| <a name="105" href="#105">105</a> <em class="jxr_comment"> */</em> |
| <a name="106" href="#106">106</a> |
| <a name="107" href="#107">107</a> methodName = getFirstToken().image; |
| <a name="108" href="#108">108</a> paramCount = jjtGetNumChildren() - 1; |
| <a name="109" href="#109">109</a> |
| <a name="110" href="#110">110</a> <strong class="jxr_keyword">return</strong> data; |
| <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"> * invokes the method. Returns null if a problem, the</em> |
| <a name="115" href="#115">115</a> <em class="jxr_javadoccomment"> * actual return if the method returns something, or</em> |
| <a name="116" href="#116">116</a> <em class="jxr_javadoccomment"> * an empty string "" if the method returns void</em> |
| <a name="117" href="#117">117</a> <em class="jxr_javadoccomment"> * @param o</em> |
| <a name="118" href="#118">118</a> <em class="jxr_javadoccomment"> * @param context</em> |
| <a name="119" href="#119">119</a> <em class="jxr_javadoccomment"> * @return Result or null.</em> |
| <a name="120" href="#120">120</a> <em class="jxr_javadoccomment"> * @throws MethodInvocationException</em> |
| <a name="121" href="#121">121</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="122" href="#122">122</a> <strong class="jxr_keyword">public</strong> Object execute(Object o, <a href="../../../../../../org/apache/velocity/context/InternalContextAdapter.html">InternalContextAdapter</a> context) |
| <a name="123" href="#123">123</a> <strong class="jxr_keyword">throws</strong> <a href="../../../../../../org/apache/velocity/exception/MethodInvocationException.html">MethodInvocationException</a> |
| <a name="124" href="#124">124</a> { |
| <a name="125" href="#125">125</a> <em class="jxr_comment">/*</em> |
| <a name="126" href="#126">126</a> <em class="jxr_comment"> * new strategy (strategery!) for introspection. Since we want</em> |
| <a name="127" href="#127">127</a> <em class="jxr_comment"> * to be thread- as well as context-safe, we *must* do it now,</em> |
| <a name="128" href="#128">128</a> <em class="jxr_comment"> * at execution time. There can be no in-node caching,</em> |
| <a name="129" href="#129">129</a> <em class="jxr_comment"> * but if we are careful, we can do it in the context.</em> |
| <a name="130" href="#130">130</a> <em class="jxr_comment"> */</em> |
| <a name="131" href="#131">131</a> |
| <a name="132" href="#132">132</a> <a href="../../../../../../org/apache/velocity/util/introspection/VelMethod.html">VelMethod</a> method = <strong class="jxr_keyword">null</strong>; |
| <a name="133" href="#133">133</a> |
| <a name="134" href="#134">134</a> Object [] params = <strong class="jxr_keyword">new</strong> Object[paramCount]; |
| <a name="135" href="#135">135</a> |
| <a name="136" href="#136">136</a> <strong class="jxr_keyword">try</strong> |
| <a name="137" href="#137">137</a> { |
| <a name="138" href="#138">138</a> <em class="jxr_comment">/*</em> |
| <a name="139" href="#139">139</a> <em class="jxr_comment"> * sadly, we do need recalc the values of the args, as this can</em> |
| <a name="140" href="#140">140</a> <em class="jxr_comment"> * change from visit to visit</em> |
| <a name="141" href="#141">141</a> <em class="jxr_comment"> */</em> |
| <a name="142" href="#142">142</a> |
| <a name="143" href="#143">143</a> <strong class="jxr_keyword">final</strong> Class[] paramClasses = paramCount > 0 ? <strong class="jxr_keyword">new</strong> Class[paramCount] : ArrayUtils.EMPTY_CLASS_ARRAY; |
| <a name="144" href="#144">144</a> |
| <a name="145" href="#145">145</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> j = 0; j < paramCount; j++) |
| <a name="146" href="#146">146</a> { |
| <a name="147" href="#147">147</a> params[j] = jjtGetChild(j + 1).value(context); |
| <a name="148" href="#148">148</a> |
| <a name="149" href="#149">149</a> <strong class="jxr_keyword">if</strong> (params[j] != <strong class="jxr_keyword">null</strong>) |
| <a name="150" href="#150">150</a> { |
| <a name="151" href="#151">151</a> paramClasses[j] = params[j].getClass(); |
| <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> <em class="jxr_comment">/*</em> |
| <a name="156" href="#156">156</a> <em class="jxr_comment"> * check the cache</em> |
| <a name="157" href="#157">157</a> <em class="jxr_comment"> */</em> |
| <a name="158" href="#158">158</a> |
| <a name="159" href="#159">159</a> <a href="../../../../../../org/apache/velocity/runtime/parser/node/ASTMethod.html">MethodCacheKey</a> mck = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/velocity/runtime/parser/node/ASTMethod.html">MethodCacheKey</a>(methodName, paramClasses); |
| <a name="160" href="#160">160</a> <a href="../../../../../../org/apache/velocity/util/introspection/IntrospectionCacheData.html">IntrospectionCacheData</a> icd = context.icacheGet( mck ); |
| <a name="161" href="#161">161</a> |
| <a name="162" href="#162">162</a> <em class="jxr_comment">/*</em> |
| <a name="163" href="#163">163</a> <em class="jxr_comment"> * like ASTIdentifier, if we have cache information, and the</em> |
| <a name="164" href="#164">164</a> <em class="jxr_comment"> * Class of Object o is the same as that in the cache, we are</em> |
| <a name="165" href="#165">165</a> <em class="jxr_comment"> * safe.</em> |
| <a name="166" href="#166">166</a> <em class="jxr_comment"> */</em> |
| <a name="167" href="#167">167</a> |
| <a name="168" href="#168">168</a> <strong class="jxr_keyword">if</strong> ( icd != <strong class="jxr_keyword">null</strong> && (o != <strong class="jxr_keyword">null</strong> && icd.contextData == o.getClass()) ) |
| <a name="169" href="#169">169</a> { |
| <a name="170" href="#170">170</a> |
| <a name="171" href="#171">171</a> <em class="jxr_comment">/*</em> |
| <a name="172" href="#172">172</a> <em class="jxr_comment"> * get the method from the cache</em> |
| <a name="173" href="#173">173</a> <em class="jxr_comment"> */</em> |
| <a name="174" href="#174">174</a> |
| <a name="175" href="#175">175</a> method = (VelMethod) icd.thingy; |
| <a name="176" href="#176">176</a> } |
| <a name="177" href="#177">177</a> <strong class="jxr_keyword">else</strong> |
| <a name="178" href="#178">178</a> { |
| <a name="179" href="#179">179</a> <em class="jxr_comment">/*</em> |
| <a name="180" href="#180">180</a> <em class="jxr_comment"> * otherwise, do the introspection, and then</em> |
| <a name="181" href="#181">181</a> <em class="jxr_comment"> * cache it</em> |
| <a name="182" href="#182">182</a> <em class="jxr_comment"> */</em> |
| <a name="183" href="#183">183</a> |
| <a name="184" href="#184">184</a> method = rsvc.getUberspect().getMethod(o, methodName, params, <strong class="jxr_keyword">new</strong> Info(context.getCurrentTemplateName(), getLine(), getColumn())); |
| <a name="185" href="#185">185</a> |
| <a name="186" href="#186">186</a> <strong class="jxr_keyword">if</strong> ((method != <strong class="jxr_keyword">null</strong>) && (o != <strong class="jxr_keyword">null</strong>)) |
| <a name="187" href="#187">187</a> { |
| <a name="188" href="#188">188</a> icd = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/velocity/util/introspection/IntrospectionCacheData.html">IntrospectionCacheData</a>(); |
| <a name="189" href="#189">189</a> icd.contextData = o.getClass(); |
| <a name="190" href="#190">190</a> icd.thingy = method; |
| <a name="191" href="#191">191</a> |
| <a name="192" href="#192">192</a> context.icachePut( mck, icd ); |
| <a name="193" href="#193">193</a> } |
| <a name="194" href="#194">194</a> } |
| <a name="195" href="#195">195</a> |
| <a name="196" href="#196">196</a> <em class="jxr_comment">/*</em> |
| <a name="197" href="#197">197</a> <em class="jxr_comment"> * if we still haven't gotten the method, either we are calling</em> |
| <a name="198" href="#198">198</a> <em class="jxr_comment"> * a method that doesn't exist (which is fine...) or I screwed</em> |
| <a name="199" href="#199">199</a> <em class="jxr_comment"> * it up.</em> |
| <a name="200" href="#200">200</a> <em class="jxr_comment"> */</em> |
| <a name="201" href="#201">201</a> |
| <a name="202" href="#202">202</a> <strong class="jxr_keyword">if</strong> (method == <strong class="jxr_keyword">null</strong>) |
| <a name="203" href="#203">203</a> { |
| <a name="204" href="#204">204</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>; |
| <a name="205" href="#205">205</a> } |
| <a name="206" href="#206">206</a> } |
| <a name="207" href="#207">207</a> <strong class="jxr_keyword">catch</strong>( MethodInvocationException mie ) |
| <a name="208" href="#208">208</a> { |
| <a name="209" href="#209">209</a> <em class="jxr_comment">/*</em> |
| <a name="210" href="#210">210</a> <em class="jxr_comment"> * this can come from the doIntrospection(), as the arg values</em> |
| <a name="211" href="#211">211</a> <em class="jxr_comment"> * are evaluated to find the right method signature. We just</em> |
| <a name="212" href="#212">212</a> <em class="jxr_comment"> * want to propogate it here, not do anything fancy</em> |
| <a name="213" href="#213">213</a> <em class="jxr_comment"> */</em> |
| <a name="214" href="#214">214</a> |
| <a name="215" href="#215">215</a> <strong class="jxr_keyword">throw</strong> mie; |
| <a name="216" href="#216">216</a> } |
| <a name="217" href="#217">217</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="218" href="#218">218</a> <em class="jxr_javadoccomment"> * pass through application level runtime exceptions</em> |
| <a name="219" href="#219">219</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="220" href="#220">220</a> <strong class="jxr_keyword">catch</strong>( RuntimeException e ) |
| <a name="221" href="#221">221</a> { |
| <a name="222" href="#222">222</a> <strong class="jxr_keyword">throw</strong> e; |
| <a name="223" href="#223">223</a> } |
| <a name="224" href="#224">224</a> <strong class="jxr_keyword">catch</strong>( Exception e ) |
| <a name="225" href="#225">225</a> { |
| <a name="226" href="#226">226</a> <em class="jxr_comment">/*</em> |
| <a name="227" href="#227">227</a> <em class="jxr_comment"> * can come from the doIntropection() also, from Introspector</em> |
| <a name="228" href="#228">228</a> <em class="jxr_comment"> */</em> |
| <a name="229" href="#229">229</a> |
| <a name="230" href="#230">230</a> log.error(<span class="jxr_string">"ASTMethod.execute() : exception from introspection"</span>, e); |
| <a name="231" href="#231">231</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>; |
| <a name="232" href="#232">232</a> } |
| <a name="233" href="#233">233</a> |
| <a name="234" href="#234">234</a> <strong class="jxr_keyword">try</strong> |
| <a name="235" href="#235">235</a> { |
| <a name="236" href="#236">236</a> <em class="jxr_comment">/*</em> |
| <a name="237" href="#237">237</a> <em class="jxr_comment"> * get the returned object. It may be null, and that is</em> |
| <a name="238" href="#238">238</a> <em class="jxr_comment"> * valid for something declared with a void return type.</em> |
| <a name="239" href="#239">239</a> <em class="jxr_comment"> * Since the caller is expecting something to be returned,</em> |
| <a name="240" href="#240">240</a> <em class="jxr_comment"> * as long as things are peachy, we can return an empty</em> |
| <a name="241" href="#241">241</a> <em class="jxr_comment"> * String so ASTReference() correctly figures out that</em> |
| <a name="242" href="#242">242</a> <em class="jxr_comment"> * all is well.</em> |
| <a name="243" href="#243">243</a> <em class="jxr_comment"> */</em> |
| <a name="244" href="#244">244</a> |
| <a name="245" href="#245">245</a> Object obj = method.invoke(o, params); |
| <a name="246" href="#246">246</a> |
| <a name="247" href="#247">247</a> <strong class="jxr_keyword">if</strong> (obj == <strong class="jxr_keyword">null</strong>) |
| <a name="248" href="#248">248</a> { |
| <a name="249" href="#249">249</a> <strong class="jxr_keyword">if</strong>( method.getReturnType() == Void.TYPE) |
| <a name="250" href="#250">250</a> { |
| <a name="251" href="#251">251</a> <strong class="jxr_keyword">return</strong> <span class="jxr_string">""</span>; |
| <a name="252" href="#252">252</a> } |
| <a name="253" href="#253">253</a> } |
| <a name="254" href="#254">254</a> |
| <a name="255" href="#255">255</a> <strong class="jxr_keyword">return</strong> obj; |
| <a name="256" href="#256">256</a> } |
| <a name="257" href="#257">257</a> <strong class="jxr_keyword">catch</strong>( InvocationTargetException ite ) |
| <a name="258" href="#258">258</a> { |
| <a name="259" href="#259">259</a> <em class="jxr_comment">/*</em> |
| <a name="260" href="#260">260</a> <em class="jxr_comment"> * In the event that the invocation of the method</em> |
| <a name="261" href="#261">261</a> <em class="jxr_comment"> * itself throws an exception, we want to catch that</em> |
| <a name="262" href="#262">262</a> <em class="jxr_comment"> * wrap it, and throw. We don't log here as we want to figure</em> |
| <a name="263" href="#263">263</a> <em class="jxr_comment"> * out which reference threw the exception, so do that</em> |
| <a name="264" href="#264">264</a> <em class="jxr_comment"> * above</em> |
| <a name="265" href="#265">265</a> <em class="jxr_comment"> */</em> |
| <a name="266" href="#266">266</a> |
| <a name="267" href="#267">267</a> <em class="jxr_comment">/*</em> |
| <a name="268" href="#268">268</a> <em class="jxr_comment"> * let non-Exception Throwables go...</em> |
| <a name="269" href="#269">269</a> <em class="jxr_comment"> */</em> |
| <a name="270" href="#270">270</a> |
| <a name="271" href="#271">271</a> Throwable t = ite.getTargetException(); |
| <a name="272" href="#272">272</a> <strong class="jxr_keyword">if</strong> (t instanceof Exception) |
| <a name="273" href="#273">273</a> { |
| <a name="274" href="#274">274</a> <strong class="jxr_keyword">try</strong> |
| <a name="275" href="#275">275</a> { |
| <a name="276" href="#276">276</a> <strong class="jxr_keyword">return</strong> EventHandlerUtil.methodException( rsvc, context, o.getClass(), methodName, (Exception) t ); |
| <a name="277" href="#277">277</a> } |
| <a name="278" href="#278">278</a> |
| <a name="279" href="#279">279</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="280" href="#280">280</a> <em class="jxr_javadoccomment"> * If the event handler throws an exception, then wrap it</em> |
| <a name="281" href="#281">281</a> <em class="jxr_javadoccomment"> * in a MethodInvocationException. Don't pass through RuntimeExceptions like other</em> |
| <a name="282" href="#282">282</a> <em class="jxr_javadoccomment"> * similar catchall code blocks.</em> |
| <a name="283" href="#283">283</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="284" href="#284">284</a> <strong class="jxr_keyword">catch</strong>( Exception e ) |
| <a name="285" href="#285">285</a> { |
| <a name="286" href="#286">286</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/velocity/exception/MethodInvocationException.html">MethodInvocationException</a>( |
| <a name="287" href="#287">287</a> <span class="jxr_string">"Invocation of method '"</span> |
| <a name="288" href="#288">288</a> + methodName + <span class="jxr_string">"' in "</span> + o.getClass() |
| <a name="289" href="#289">289</a> + <span class="jxr_string">" threw exception "</span> |
| <a name="290" href="#290">290</a> + e.toString(), |
| <a name="291" href="#291">291</a> e, methodName, context.getCurrentTemplateName(), <strong class="jxr_keyword">this</strong>.getLine(), <strong class="jxr_keyword">this</strong>.getColumn()); |
| <a name="292" href="#292">292</a> } |
| <a name="293" href="#293">293</a> } |
| <a name="294" href="#294">294</a> <strong class="jxr_keyword">else</strong> |
| <a name="295" href="#295">295</a> { |
| <a name="296" href="#296">296</a> <em class="jxr_comment">/*</em> |
| <a name="297" href="#297">297</a> <em class="jxr_comment"> * no event cartridge to override. Just throw</em> |
| <a name="298" href="#298">298</a> <em class="jxr_comment"> */</em> |
| <a name="299" href="#299">299</a> |
| <a name="300" href="#300">300</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/velocity/exception/MethodInvocationException.html">MethodInvocationException</a>( |
| <a name="301" href="#301">301</a> <span class="jxr_string">"Invocation of method '"</span> |
| <a name="302" href="#302">302</a> + methodName + <span class="jxr_string">"' in "</span> + o.getClass() |
| <a name="303" href="#303">303</a> + <span class="jxr_string">" threw exception "</span> |
| <a name="304" href="#304">304</a> + ite.getTargetException().toString(), |
| <a name="305" href="#305">305</a> ite.getTargetException(), methodName, context.getCurrentTemplateName(), <strong class="jxr_keyword">this</strong>.getLine(), <strong class="jxr_keyword">this</strong>.getColumn()); |
| <a name="306" href="#306">306</a> } |
| <a name="307" href="#307">307</a> } |
| <a name="308" href="#308">308</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="309" href="#309">309</a> <em class="jxr_javadoccomment"> * pass through application level runtime exceptions</em> |
| <a name="310" href="#310">310</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="311" href="#311">311</a> <strong class="jxr_keyword">catch</strong>( RuntimeException e ) |
| <a name="312" href="#312">312</a> { |
| <a name="313" href="#313">313</a> <strong class="jxr_keyword">throw</strong> e; |
| <a name="314" href="#314">314</a> } |
| <a name="315" href="#315">315</a> <strong class="jxr_keyword">catch</strong>( Exception e ) |
| <a name="316" href="#316">316</a> { |
| <a name="317" href="#317">317</a> log.error(<span class="jxr_string">"ASTMethod.execute() : exception invoking method '"</span> |
| <a name="318" href="#318">318</a> + methodName + <span class="jxr_string">"' in "</span> + o.getClass(), e); |
| <a name="319" href="#319">319</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>; |
| <a name="320" href="#320">320</a> } |
| <a name="321" href="#321">321</a> } |
| <a name="322" href="#322">322</a> |
| <a name="323" href="#323">323</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="324" href="#324">324</a> <em class="jxr_javadoccomment"> * Internal class used as key for method cache. Combines</em> |
| <a name="325" href="#325">325</a> <em class="jxr_javadoccomment"> * ASTMethod fields with array of parameter classes. Has</em> |
| <a name="326" href="#326">326</a> <em class="jxr_javadoccomment"> * public access (and complete constructor) for unit test </em> |
| <a name="327" href="#327">327</a> <em class="jxr_javadoccomment"> * purposes.</em> |
| <a name="328" href="#328">328</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="329" href="#329">329</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/velocity/runtime/parser/node/ASTMethod.html">MethodCacheKey</a> |
| <a name="330" href="#330">330</a> { |
| <a name="331" href="#331">331</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> String methodName; |
| <a name="332" href="#332">332</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Class[] params; |
| <a name="333" href="#333">333</a> |
| <a name="334" href="#334">334</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/apache/velocity/runtime/parser/node/ASTMethod.html">MethodCacheKey</a>(String methodName, Class[] params) |
| <a name="335" href="#335">335</a> { |
| <a name="336" href="#336">336</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> </em> |
| <a name="337" href="#337">337</a> <em class="jxr_javadoccomment"> * Should never be initialized with nulls, but to be safe we refuse </em> |
| <a name="338" href="#338">338</a> <em class="jxr_javadoccomment"> * to accept them.</em> |
| <a name="339" href="#339">339</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="340" href="#340">340</a> <strong class="jxr_keyword">this</strong>.methodName = (methodName != <strong class="jxr_keyword">null</strong>) ? methodName : StringUtils.EMPTY; |
| <a name="341" href="#341">341</a> <strong class="jxr_keyword">this</strong>.params = (params != <strong class="jxr_keyword">null</strong>) ? params : ArrayUtils.EMPTY_CLASS_ARRAY; |
| <a name="342" href="#342">342</a> } |
| <a name="343" href="#343">343</a> |
| <a name="344" href="#344">344</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="345" href="#345">345</a> <em class="jxr_javadoccomment"> * @see java.lang.Object#equals(java.lang.Object)</em> |
| <a name="346" href="#346">346</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="347" href="#347">347</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> equals(Object o) |
| <a name="348" href="#348">348</a> { |
| <a name="349" href="#349">349</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> </em> |
| <a name="350" href="#350">350</a> <em class="jxr_javadoccomment"> * note we skip the null test for methodName and params</em> |
| <a name="351" href="#351">351</a> <em class="jxr_javadoccomment"> * due to the earlier test in the constructor</em> |
| <a name="352" href="#352">352</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="353" href="#353">353</a> <strong class="jxr_keyword">if</strong> (o instanceof MethodCacheKey) |
| <a name="354" href="#354">354</a> { |
| <a name="355" href="#355">355</a> <strong class="jxr_keyword">final</strong> <a href="../../../../../../org/apache/velocity/runtime/parser/node/ASTMethod.html">MethodCacheKey</a> other = (MethodCacheKey) o; |
| <a name="356" href="#356">356</a> <strong class="jxr_keyword">if</strong> (params.length == other.params.length && |
| <a name="357" href="#357">357</a> methodName.equals(other.methodName)) |
| <a name="358" href="#358">358</a> { |
| <a name="359" href="#359">359</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i < params.length; ++i) |
| <a name="360" href="#360">360</a> { |
| <a name="361" href="#361">361</a> <strong class="jxr_keyword">if</strong> (params[i] == <strong class="jxr_keyword">null</strong>) |
| <a name="362" href="#362">362</a> { |
| <a name="363" href="#363">363</a> <strong class="jxr_keyword">if</strong> (params[i] != other.params[i]) |
| <a name="364" href="#364">364</a> { |
| <a name="365" href="#365">365</a> <strong class="jxr_keyword">return</strong> false; |
| <a name="366" href="#366">366</a> } |
| <a name="367" href="#367">367</a> } |
| <a name="368" href="#368">368</a> <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (!params[i].equals(other.params[i])) |
| <a name="369" href="#369">369</a> { |
| <a name="370" href="#370">370</a> <strong class="jxr_keyword">return</strong> false; |
| <a name="371" href="#371">371</a> } |
| <a name="372" href="#372">372</a> } |
| <a name="373" href="#373">373</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>; |
| <a name="374" href="#374">374</a> } |
| <a name="375" href="#375">375</a> } |
| <a name="376" href="#376">376</a> <strong class="jxr_keyword">return</strong> false; |
| <a name="377" href="#377">377</a> } |
| <a name="378" href="#378">378</a> |
| <a name="379" href="#379">379</a> |
| <a name="380" href="#380">380</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="381" href="#381">381</a> <em class="jxr_javadoccomment"> * @see java.lang.Object#hashCode()</em> |
| <a name="382" href="#382">382</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="383" href="#383">383</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> hashCode() |
| <a name="384" href="#384">384</a> { |
| <a name="385" href="#385">385</a> <strong class="jxr_keyword">int</strong> result = 17; |
| <a name="386" href="#386">386</a> |
| <a name="387" href="#387">387</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> </em> |
| <a name="388" href="#388">388</a> <em class="jxr_javadoccomment"> * note we skip the null test for methodName and params</em> |
| <a name="389" href="#389">389</a> <em class="jxr_javadoccomment"> * due to the earlier test in the constructor</em> |
| <a name="390" href="#390">390</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="391" href="#391">391</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i < params.length; ++i) |
| <a name="392" href="#392">392</a> { |
| <a name="393" href="#393">393</a> <strong class="jxr_keyword">final</strong> Class param = params[i]; |
| <a name="394" href="#394">394</a> <strong class="jxr_keyword">if</strong> (param != <strong class="jxr_keyword">null</strong>) |
| <a name="395" href="#395">395</a> { |
| <a name="396" href="#396">396</a> result = result * 37 + param.hashCode(); |
| <a name="397" href="#397">397</a> } |
| <a name="398" href="#398">398</a> } |
| <a name="399" href="#399">399</a> |
| <a name="400" href="#400">400</a> result = result * 37 + methodName.hashCode(); |
| <a name="401" href="#401">401</a> |
| <a name="402" href="#402">402</a> <strong class="jxr_keyword">return</strong> result; |
| <a name="403" href="#403">403</a> } |
| <a name="404" href="#404">404</a> } |
| <a name="405" href="#405">405</a> |
| <a name="406" href="#406">406</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="407" href="#407">407</a> <em class="jxr_javadoccomment"> * @return Returns the methodName.</em> |
| <a name="408" href="#408">408</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="409" href="#409">409</a> <strong class="jxr_keyword">public</strong> String getMethodName() |
| <a name="410" href="#410">410</a> { |
| <a name="411" href="#411">411</a> <strong class="jxr_keyword">return</strong> methodName; |
| <a name="412" href="#412">412</a> } |
| <a name="413" href="#413">413</a> |
| <a name="414" href="#414">414</a> |
| <a name="415" href="#415">415</a> } |
| </pre> |
| <hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/">Maven</a></div></body> |
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