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| <pre><span class="sourceLineNo">001</span><a id="line.1">/*</a> |
| <span class="sourceLineNo">002</span><a id="line.2"> * Licensed to the Apache Software Foundation (ASF) under one</a> |
| <span class="sourceLineNo">003</span><a id="line.3"> * or more contributor license agreements. See the NOTICE file</a> |
| <span class="sourceLineNo">004</span><a id="line.4"> * distributed with this work for additional information</a> |
| <span class="sourceLineNo">005</span><a id="line.5"> * regarding copyright ownership. The ASF licenses this file</a> |
| <span class="sourceLineNo">006</span><a id="line.6"> * to you under the Apache License, Version 2.0 (the</a> |
| <span class="sourceLineNo">007</span><a id="line.7"> * "License"); you may not use this file except in compliance</a> |
| <span class="sourceLineNo">008</span><a id="line.8"> * with the License. You may obtain a copy of the License at</a> |
| <span class="sourceLineNo">009</span><a id="line.9"> *</a> |
| <span class="sourceLineNo">010</span><a id="line.10"> * http://www.apache.org/licenses/LICENSE-2.0</a> |
| <span class="sourceLineNo">011</span><a id="line.11"> *</a> |
| <span class="sourceLineNo">012</span><a id="line.12"> * Unless required by applicable law or agreed to in writing,</a> |
| <span class="sourceLineNo">013</span><a id="line.13"> * software distributed under the License is distributed on an</a> |
| <span class="sourceLineNo">014</span><a id="line.14"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</a> |
| <span class="sourceLineNo">015</span><a id="line.15"> * KIND, either express or implied. See the License for the</a> |
| <span class="sourceLineNo">016</span><a id="line.16"> * specific language governing permissions and limitations</a> |
| <span class="sourceLineNo">017</span><a id="line.17"> * under the License.</a> |
| <span class="sourceLineNo">018</span><a id="line.18"> */</a> |
| <span class="sourceLineNo">019</span><a id="line.19">package org.apache.shiro.util;</a> |
| <span class="sourceLineNo">020</span><a id="line.20"></a> |
| <span class="sourceLineNo">021</span><a id="line.21">import org.slf4j.Logger;</a> |
| <span class="sourceLineNo">022</span><a id="line.22">import org.slf4j.LoggerFactory;</a> |
| <span class="sourceLineNo">023</span><a id="line.23"></a> |
| <span class="sourceLineNo">024</span><a id="line.24">import java.io.InputStream;</a> |
| <span class="sourceLineNo">025</span><a id="line.25">import java.lang.annotation.Annotation;</a> |
| <span class="sourceLineNo">026</span><a id="line.26">import java.lang.reflect.Constructor;</a> |
| <span class="sourceLineNo">027</span><a id="line.27">import java.lang.reflect.Method;</a> |
| <span class="sourceLineNo">028</span><a id="line.28">import java.util.ArrayList;</a> |
| <span class="sourceLineNo">029</span><a id="line.29">import java.util.List;</a> |
| <span class="sourceLineNo">030</span><a id="line.30"></a> |
| <span class="sourceLineNo">031</span><a id="line.31"></a> |
| <span class="sourceLineNo">032</span><a id="line.32">/**</a> |
| <span class="sourceLineNo">033</span><a id="line.33"> * Utility method library used to conveniently interact with <code>Class</code>es, such as acquiring them from the</a> |
| <span class="sourceLineNo">034</span><a id="line.34"> * application <code>ClassLoader</code>s and instantiating Objects from them.</a> |
| <span class="sourceLineNo">035</span><a id="line.35"> *</a> |
| <span class="sourceLineNo">036</span><a id="line.36"> * @since 0.1</a> |
| <span class="sourceLineNo">037</span><a id="line.37"> */</a> |
| <span class="sourceLineNo">038</span><a id="line.38">public class ClassUtils {</a> |
| <span class="sourceLineNo">039</span><a id="line.39"></a> |
| <span class="sourceLineNo">040</span><a id="line.40"> //TODO - complete JavaDoc</a> |
| <span class="sourceLineNo">041</span><a id="line.41"></a> |
| <span class="sourceLineNo">042</span><a id="line.42"> /**</a> |
| <span class="sourceLineNo">043</span><a id="line.43"> * Private internal log instance.</a> |
| <span class="sourceLineNo">044</span><a id="line.44"> */</a> |
| <span class="sourceLineNo">045</span><a id="line.45"> private static final Logger log = LoggerFactory.getLogger(ClassUtils.class);</a> |
| <span class="sourceLineNo">046</span><a id="line.46"></a> |
| <span class="sourceLineNo">047</span><a id="line.47"> /**</a> |
| <span class="sourceLineNo">048</span><a id="line.48"> * @since 1.0</a> |
| <span class="sourceLineNo">049</span><a id="line.49"> */</a> |
| <span class="sourceLineNo">050</span><a id="line.50"> private static final ClassLoaderAccessor THREAD_CL_ACCESSOR = new ExceptionIgnoringAccessor() {</a> |
| <span class="sourceLineNo">051</span><a id="line.51"> @Override</a> |
| <span class="sourceLineNo">052</span><a id="line.52"> protected ClassLoader doGetClassLoader() throws Throwable {</a> |
| <span class="sourceLineNo">053</span><a id="line.53"> return Thread.currentThread().getContextClassLoader();</a> |
| <span class="sourceLineNo">054</span><a id="line.54"> }</a> |
| <span class="sourceLineNo">055</span><a id="line.55"> };</a> |
| <span class="sourceLineNo">056</span><a id="line.56"></a> |
| <span class="sourceLineNo">057</span><a id="line.57"> /**</a> |
| <span class="sourceLineNo">058</span><a id="line.58"> * @since 1.0</a> |
| <span class="sourceLineNo">059</span><a id="line.59"> */</a> |
| <span class="sourceLineNo">060</span><a id="line.60"> private static final ClassLoaderAccessor CLASS_CL_ACCESSOR = new ExceptionIgnoringAccessor() {</a> |
| <span class="sourceLineNo">061</span><a id="line.61"> @Override</a> |
| <span class="sourceLineNo">062</span><a id="line.62"> protected ClassLoader doGetClassLoader() throws Throwable {</a> |
| <span class="sourceLineNo">063</span><a id="line.63"> return ClassUtils.class.getClassLoader();</a> |
| <span class="sourceLineNo">064</span><a id="line.64"> }</a> |
| <span class="sourceLineNo">065</span><a id="line.65"> };</a> |
| <span class="sourceLineNo">066</span><a id="line.66"></a> |
| <span class="sourceLineNo">067</span><a id="line.67"> /**</a> |
| <span class="sourceLineNo">068</span><a id="line.68"> * @since 1.0</a> |
| <span class="sourceLineNo">069</span><a id="line.69"> */</a> |
| <span class="sourceLineNo">070</span><a id="line.70"> private static final ClassLoaderAccessor SYSTEM_CL_ACCESSOR = new ExceptionIgnoringAccessor() {</a> |
| <span class="sourceLineNo">071</span><a id="line.71"> @Override</a> |
| <span class="sourceLineNo">072</span><a id="line.72"> protected ClassLoader doGetClassLoader() throws Throwable {</a> |
| <span class="sourceLineNo">073</span><a id="line.73"> return ClassLoader.getSystemClassLoader();</a> |
| <span class="sourceLineNo">074</span><a id="line.74"> }</a> |
| <span class="sourceLineNo">075</span><a id="line.75"> };</a> |
| <span class="sourceLineNo">076</span><a id="line.76"></a> |
| <span class="sourceLineNo">077</span><a id="line.77"> /**</a> |
| <span class="sourceLineNo">078</span><a id="line.78"> * Returns the specified resource by checking the current thread's</a> |
| <span class="sourceLineNo">079</span><a id="line.79"> * {@link Thread#getContextClassLoader() context class loader}, then the</a> |
| <span class="sourceLineNo">080</span><a id="line.80"> * current ClassLoader (<code>ClassUtils.class.getClassLoader()</code>), then the system/application</a> |
| <span class="sourceLineNo">081</span><a id="line.81"> * ClassLoader (<code>ClassLoader.getSystemClassLoader()</code>, in that order, using</a> |
| <span class="sourceLineNo">082</span><a id="line.82"> * {@link ClassLoader#getResourceAsStream(String) getResourceAsStream(name)}.</a> |
| <span class="sourceLineNo">083</span><a id="line.83"> *</a> |
| <span class="sourceLineNo">084</span><a id="line.84"> * @param name the name of the resource to acquire from the classloader(s).</a> |
| <span class="sourceLineNo">085</span><a id="line.85"> * @return the InputStream of the resource found, or <code>null</code> if the resource cannot be found from any</a> |
| <span class="sourceLineNo">086</span><a id="line.86"> * of the three mentioned ClassLoaders.</a> |
| <span class="sourceLineNo">087</span><a id="line.87"> * @since 0.9</a> |
| <span class="sourceLineNo">088</span><a id="line.88"> */</a> |
| <span class="sourceLineNo">089</span><a id="line.89"> public static InputStream getResourceAsStream(String name) {</a> |
| <span class="sourceLineNo">090</span><a id="line.90"></a> |
| <span class="sourceLineNo">091</span><a id="line.91"> InputStream is = THREAD_CL_ACCESSOR.getResourceStream(name);</a> |
| <span class="sourceLineNo">092</span><a id="line.92"></a> |
| <span class="sourceLineNo">093</span><a id="line.93"> if (is == null) {</a> |
| <span class="sourceLineNo">094</span><a id="line.94"> if (log.isTraceEnabled()) {</a> |
| <span class="sourceLineNo">095</span><a id="line.95"> log.trace("Resource [" + name + "] was not found via the thread context ClassLoader. Trying the " +</a> |
| <span class="sourceLineNo">096</span><a id="line.96"> "current ClassLoader...");</a> |
| <span class="sourceLineNo">097</span><a id="line.97"> }</a> |
| <span class="sourceLineNo">098</span><a id="line.98"> is = CLASS_CL_ACCESSOR.getResourceStream(name);</a> |
| <span class="sourceLineNo">099</span><a id="line.99"> }</a> |
| <span class="sourceLineNo">100</span><a id="line.100"></a> |
| <span class="sourceLineNo">101</span><a id="line.101"> if (is == null) {</a> |
| <span class="sourceLineNo">102</span><a id="line.102"> if (log.isTraceEnabled()) {</a> |
| <span class="sourceLineNo">103</span><a id="line.103"> log.trace("Resource [" + name + "] was not found via the current class loader. Trying the " +</a> |
| <span class="sourceLineNo">104</span><a id="line.104"> "system/application ClassLoader...");</a> |
| <span class="sourceLineNo">105</span><a id="line.105"> }</a> |
| <span class="sourceLineNo">106</span><a id="line.106"> is = SYSTEM_CL_ACCESSOR.getResourceStream(name);</a> |
| <span class="sourceLineNo">107</span><a id="line.107"> }</a> |
| <span class="sourceLineNo">108</span><a id="line.108"></a> |
| <span class="sourceLineNo">109</span><a id="line.109"> if (is == null && log.isTraceEnabled()) {</a> |
| <span class="sourceLineNo">110</span><a id="line.110"> log.trace("Resource [" + name + "] was not found via the thread context, current, or " +</a> |
| <span class="sourceLineNo">111</span><a id="line.111"> "system/application ClassLoaders. All heuristics have been exhausted. Returning null.");</a> |
| <span class="sourceLineNo">112</span><a id="line.112"> }</a> |
| <span class="sourceLineNo">113</span><a id="line.113"></a> |
| <span class="sourceLineNo">114</span><a id="line.114"> return is;</a> |
| <span class="sourceLineNo">115</span><a id="line.115"> }</a> |
| <span class="sourceLineNo">116</span><a id="line.116"></a> |
| <span class="sourceLineNo">117</span><a id="line.117"> /**</a> |
| <span class="sourceLineNo">118</span><a id="line.118"> * Attempts to load the specified class name from the current thread's</a> |
| <span class="sourceLineNo">119</span><a id="line.119"> * {@link Thread#getContextClassLoader() context class loader}, then the</a> |
| <span class="sourceLineNo">120</span><a id="line.120"> * current ClassLoader (<code>ClassUtils.class.getClassLoader()</code>), then the system/application</a> |
| <span class="sourceLineNo">121</span><a id="line.121"> * ClassLoader (<code>ClassLoader.getSystemClassLoader()</code>, in that order. If any of them cannot locate</a> |
| <span class="sourceLineNo">122</span><a id="line.122"> * the specified class, an <code>UnknownClassException</code> is thrown (our RuntimeException equivalent of</a> |
| <span class="sourceLineNo">123</span><a id="line.123"> * the JRE's <code>ClassNotFoundException</code>.</a> |
| <span class="sourceLineNo">124</span><a id="line.124"> *</a> |
| <span class="sourceLineNo">125</span><a id="line.125"> * @param fqcn the fully qualified class name to load</a> |
| <span class="sourceLineNo">126</span><a id="line.126"> * @return the located class</a> |
| <span class="sourceLineNo">127</span><a id="line.127"> * @throws UnknownClassException if the class cannot be found.</a> |
| <span class="sourceLineNo">128</span><a id="line.128"> */</a> |
| <span class="sourceLineNo">129</span><a id="line.129"> public static Class forName(String fqcn) throws UnknownClassException {</a> |
| <span class="sourceLineNo">130</span><a id="line.130"></a> |
| <span class="sourceLineNo">131</span><a id="line.131"> Class clazz = THREAD_CL_ACCESSOR.loadClass(fqcn);</a> |
| <span class="sourceLineNo">132</span><a id="line.132"></a> |
| <span class="sourceLineNo">133</span><a id="line.133"> if (clazz == null) {</a> |
| <span class="sourceLineNo">134</span><a id="line.134"> if (log.isTraceEnabled()) {</a> |
| <span class="sourceLineNo">135</span><a id="line.135"> log.trace("Unable to load class named [" + fqcn +</a> |
| <span class="sourceLineNo">136</span><a id="line.136"> "] from the thread context ClassLoader. Trying the current ClassLoader...");</a> |
| <span class="sourceLineNo">137</span><a id="line.137"> }</a> |
| <span class="sourceLineNo">138</span><a id="line.138"> clazz = CLASS_CL_ACCESSOR.loadClass(fqcn);</a> |
| <span class="sourceLineNo">139</span><a id="line.139"> }</a> |
| <span class="sourceLineNo">140</span><a id="line.140"></a> |
| <span class="sourceLineNo">141</span><a id="line.141"> if (clazz == null) {</a> |
| <span class="sourceLineNo">142</span><a id="line.142"> if (log.isTraceEnabled()) {</a> |
| <span class="sourceLineNo">143</span><a id="line.143"> log.trace("Unable to load class named [" + fqcn + "] from the current ClassLoader. " +</a> |
| <span class="sourceLineNo">144</span><a id="line.144"> "Trying the system/application ClassLoader...");</a> |
| <span class="sourceLineNo">145</span><a id="line.145"> }</a> |
| <span class="sourceLineNo">146</span><a id="line.146"> clazz = SYSTEM_CL_ACCESSOR.loadClass(fqcn);</a> |
| <span class="sourceLineNo">147</span><a id="line.147"> }</a> |
| <span class="sourceLineNo">148</span><a id="line.148"></a> |
| <span class="sourceLineNo">149</span><a id="line.149"> if (clazz == null) {</a> |
| <span class="sourceLineNo">150</span><a id="line.150"> String msg = "Unable to load class named [" + fqcn + "] from the thread context, current, or " +</a> |
| <span class="sourceLineNo">151</span><a id="line.151"> "system/application ClassLoaders. All heuristics have been exhausted. Class could not be found.";</a> |
| <span class="sourceLineNo">152</span><a id="line.152"> throw new UnknownClassException(msg);</a> |
| <span class="sourceLineNo">153</span><a id="line.153"> }</a> |
| <span class="sourceLineNo">154</span><a id="line.154"></a> |
| <span class="sourceLineNo">155</span><a id="line.155"> return clazz;</a> |
| <span class="sourceLineNo">156</span><a id="line.156"> }</a> |
| <span class="sourceLineNo">157</span><a id="line.157"></a> |
| <span class="sourceLineNo">158</span><a id="line.158"> public static boolean isAvailable(String fullyQualifiedClassName) {</a> |
| <span class="sourceLineNo">159</span><a id="line.159"> try {</a> |
| <span class="sourceLineNo">160</span><a id="line.160"> forName(fullyQualifiedClassName);</a> |
| <span class="sourceLineNo">161</span><a id="line.161"> return true;</a> |
| <span class="sourceLineNo">162</span><a id="line.162"> } catch (UnknownClassException e) {</a> |
| <span class="sourceLineNo">163</span><a id="line.163"> return false;</a> |
| <span class="sourceLineNo">164</span><a id="line.164"> }</a> |
| <span class="sourceLineNo">165</span><a id="line.165"> }</a> |
| <span class="sourceLineNo">166</span><a id="line.166"></a> |
| <span class="sourceLineNo">167</span><a id="line.167"> public static Object newInstance(String fqcn) {</a> |
| <span class="sourceLineNo">168</span><a id="line.168"> return newInstance(forName(fqcn));</a> |
| <span class="sourceLineNo">169</span><a id="line.169"> }</a> |
| <span class="sourceLineNo">170</span><a id="line.170"></a> |
| <span class="sourceLineNo">171</span><a id="line.171"> public static Object newInstance(String fqcn, Object... args) {</a> |
| <span class="sourceLineNo">172</span><a id="line.172"> return newInstance(forName(fqcn), args);</a> |
| <span class="sourceLineNo">173</span><a id="line.173"> }</a> |
| <span class="sourceLineNo">174</span><a id="line.174"></a> |
| <span class="sourceLineNo">175</span><a id="line.175"> public static Object newInstance(Class clazz) {</a> |
| <span class="sourceLineNo">176</span><a id="line.176"> if (clazz == null) {</a> |
| <span class="sourceLineNo">177</span><a id="line.177"> String msg = "Class method parameter cannot be null.";</a> |
| <span class="sourceLineNo">178</span><a id="line.178"> throw new IllegalArgumentException(msg);</a> |
| <span class="sourceLineNo">179</span><a id="line.179"> }</a> |
| <span class="sourceLineNo">180</span><a id="line.180"> try {</a> |
| <span class="sourceLineNo">181</span><a id="line.181"> return clazz.newInstance();</a> |
| <span class="sourceLineNo">182</span><a id="line.182"> } catch (Exception e) {</a> |
| <span class="sourceLineNo">183</span><a id="line.183"> throw new InstantiationException("Unable to instantiate class [" + clazz.getName() + "]", e);</a> |
| <span class="sourceLineNo">184</span><a id="line.184"> }</a> |
| <span class="sourceLineNo">185</span><a id="line.185"> }</a> |
| <span class="sourceLineNo">186</span><a id="line.186"></a> |
| <span class="sourceLineNo">187</span><a id="line.187"> public static Object newInstance(Class clazz, Object... args) {</a> |
| <span class="sourceLineNo">188</span><a id="line.188"> Class[] argTypes = new Class[args.length];</a> |
| <span class="sourceLineNo">189</span><a id="line.189"> for (int i = 0; i < args.length; i++) {</a> |
| <span class="sourceLineNo">190</span><a id="line.190"> argTypes[i] = args[i].getClass();</a> |
| <span class="sourceLineNo">191</span><a id="line.191"> }</a> |
| <span class="sourceLineNo">192</span><a id="line.192"> Constructor ctor = getConstructor(clazz, argTypes);</a> |
| <span class="sourceLineNo">193</span><a id="line.193"> return instantiate(ctor, args);</a> |
| <span class="sourceLineNo">194</span><a id="line.194"> }</a> |
| <span class="sourceLineNo">195</span><a id="line.195"></a> |
| <span class="sourceLineNo">196</span><a id="line.196"> public static Constructor getConstructor(Class clazz, Class... argTypes) {</a> |
| <span class="sourceLineNo">197</span><a id="line.197"> try {</a> |
| <span class="sourceLineNo">198</span><a id="line.198"> return clazz.getConstructor(argTypes);</a> |
| <span class="sourceLineNo">199</span><a id="line.199"> } catch (NoSuchMethodException e) {</a> |
| <span class="sourceLineNo">200</span><a id="line.200"> throw new IllegalStateException(e);</a> |
| <span class="sourceLineNo">201</span><a id="line.201"> }</a> |
| <span class="sourceLineNo">202</span><a id="line.202"></a> |
| <span class="sourceLineNo">203</span><a id="line.203"> }</a> |
| <span class="sourceLineNo">204</span><a id="line.204"></a> |
| <span class="sourceLineNo">205</span><a id="line.205"> public static Object instantiate(Constructor ctor, Object... args) {</a> |
| <span class="sourceLineNo">206</span><a id="line.206"> try {</a> |
| <span class="sourceLineNo">207</span><a id="line.207"> return ctor.newInstance(args);</a> |
| <span class="sourceLineNo">208</span><a id="line.208"> } catch (Exception e) {</a> |
| <span class="sourceLineNo">209</span><a id="line.209"> String msg = "Unable to instantiate Permission instance with constructor [" + ctor + "]";</a> |
| <span class="sourceLineNo">210</span><a id="line.210"> throw new InstantiationException(msg, e);</a> |
| <span class="sourceLineNo">211</span><a id="line.211"> }</a> |
| <span class="sourceLineNo">212</span><a id="line.212"> }</a> |
| <span class="sourceLineNo">213</span><a id="line.213"></a> |
| <span class="sourceLineNo">214</span><a id="line.214"> /**</a> |
| <span class="sourceLineNo">215</span><a id="line.215"> *</a> |
| <span class="sourceLineNo">216</span><a id="line.216"> * @param type</a> |
| <span class="sourceLineNo">217</span><a id="line.217"> * @param annotation</a> |
| <span class="sourceLineNo">218</span><a id="line.218"> * @return</a> |
| <span class="sourceLineNo">219</span><a id="line.219"> * @since 1.3</a> |
| <span class="sourceLineNo">220</span><a id="line.220"> */</a> |
| <span class="sourceLineNo">221</span><a id="line.221"> public static List<Method> getAnnotatedMethods(final Class<?> type, final Class<? extends Annotation> annotation) {</a> |
| <span class="sourceLineNo">222</span><a id="line.222"> final List<Method> methods = new ArrayList<Method>();</a> |
| <span class="sourceLineNo">223</span><a id="line.223"> Class<?> clazz = type;</a> |
| <span class="sourceLineNo">224</span><a id="line.224"> while (!Object.class.equals(clazz)) {</a> |
| <span class="sourceLineNo">225</span><a id="line.225"> Method[] currentClassMethods = clazz.getDeclaredMethods();</a> |
| <span class="sourceLineNo">226</span><a id="line.226"> for (final Method method : currentClassMethods) {</a> |
| <span class="sourceLineNo">227</span><a id="line.227"> if (annotation == null || method.isAnnotationPresent(annotation)) {</a> |
| <span class="sourceLineNo">228</span><a id="line.228"> methods.add(method);</a> |
| <span class="sourceLineNo">229</span><a id="line.229"> }</a> |
| <span class="sourceLineNo">230</span><a id="line.230"> }</a> |
| <span class="sourceLineNo">231</span><a id="line.231"> // move to the upper class in the hierarchy in search for more methods</a> |
| <span class="sourceLineNo">232</span><a id="line.232"> clazz = clazz.getSuperclass();</a> |
| <span class="sourceLineNo">233</span><a id="line.233"> }</a> |
| <span class="sourceLineNo">234</span><a id="line.234"> return methods;</a> |
| <span class="sourceLineNo">235</span><a id="line.235"> }</a> |
| <span class="sourceLineNo">236</span><a id="line.236"></a> |
| <span class="sourceLineNo">237</span><a id="line.237"> /**</a> |
| <span class="sourceLineNo">238</span><a id="line.238"> * @since 1.0</a> |
| <span class="sourceLineNo">239</span><a id="line.239"> */</a> |
| <span class="sourceLineNo">240</span><a id="line.240"> private static interface ClassLoaderAccessor {</a> |
| <span class="sourceLineNo">241</span><a id="line.241"> Class loadClass(String fqcn);</a> |
| <span class="sourceLineNo">242</span><a id="line.242"> InputStream getResourceStream(String name);</a> |
| <span class="sourceLineNo">243</span><a id="line.243"> }</a> |
| <span class="sourceLineNo">244</span><a id="line.244"></a> |
| <span class="sourceLineNo">245</span><a id="line.245"> /**</a> |
| <span class="sourceLineNo">246</span><a id="line.246"> * @since 1.0</a> |
| <span class="sourceLineNo">247</span><a id="line.247"> */</a> |
| <span class="sourceLineNo">248</span><a id="line.248"> private static abstract class ExceptionIgnoringAccessor implements ClassLoaderAccessor {</a> |
| <span class="sourceLineNo">249</span><a id="line.249"></a> |
| <span class="sourceLineNo">250</span><a id="line.250"> public Class loadClass(String fqcn) {</a> |
| <span class="sourceLineNo">251</span><a id="line.251"> Class clazz = null;</a> |
| <span class="sourceLineNo">252</span><a id="line.252"> ClassLoader cl = getClassLoader();</a> |
| <span class="sourceLineNo">253</span><a id="line.253"> if (cl != null) {</a> |
| <span class="sourceLineNo">254</span><a id="line.254"> try {</a> |
| <span class="sourceLineNo">255</span><a id="line.255"> clazz = cl.loadClass(fqcn);</a> |
| <span class="sourceLineNo">256</span><a id="line.256"> } catch (ClassNotFoundException e) {</a> |
| <span class="sourceLineNo">257</span><a id="line.257"> if (log.isTraceEnabled()) {</a> |
| <span class="sourceLineNo">258</span><a id="line.258"> log.trace("Unable to load clazz named [" + fqcn + "] from class loader [" + cl + "]");</a> |
| <span class="sourceLineNo">259</span><a id="line.259"> }</a> |
| <span class="sourceLineNo">260</span><a id="line.260"> }</a> |
| <span class="sourceLineNo">261</span><a id="line.261"> }</a> |
| <span class="sourceLineNo">262</span><a id="line.262"> return clazz;</a> |
| <span class="sourceLineNo">263</span><a id="line.263"> }</a> |
| <span class="sourceLineNo">264</span><a id="line.264"></a> |
| <span class="sourceLineNo">265</span><a id="line.265"> public InputStream getResourceStream(String name) {</a> |
| <span class="sourceLineNo">266</span><a id="line.266"> InputStream is = null;</a> |
| <span class="sourceLineNo">267</span><a id="line.267"> ClassLoader cl = getClassLoader();</a> |
| <span class="sourceLineNo">268</span><a id="line.268"> if (cl != null) {</a> |
| <span class="sourceLineNo">269</span><a id="line.269"> is = cl.getResourceAsStream(name);</a> |
| <span class="sourceLineNo">270</span><a id="line.270"> }</a> |
| <span class="sourceLineNo">271</span><a id="line.271"> return is;</a> |
| <span class="sourceLineNo">272</span><a id="line.272"> }</a> |
| <span class="sourceLineNo">273</span><a id="line.273"></a> |
| <span class="sourceLineNo">274</span><a id="line.274"> protected final ClassLoader getClassLoader() {</a> |
| <span class="sourceLineNo">275</span><a id="line.275"> try {</a> |
| <span class="sourceLineNo">276</span><a id="line.276"> return doGetClassLoader();</a> |
| <span class="sourceLineNo">277</span><a id="line.277"> } catch (Throwable t) {</a> |
| <span class="sourceLineNo">278</span><a id="line.278"> if (log.isDebugEnabled()) {</a> |
| <span class="sourceLineNo">279</span><a id="line.279"> log.debug("Unable to acquire ClassLoader.", t);</a> |
| <span class="sourceLineNo">280</span><a id="line.280"> }</a> |
| <span class="sourceLineNo">281</span><a id="line.281"> }</a> |
| <span class="sourceLineNo">282</span><a id="line.282"> return null;</a> |
| <span class="sourceLineNo">283</span><a id="line.283"> }</a> |
| <span class="sourceLineNo">284</span><a id="line.284"></a> |
| <span class="sourceLineNo">285</span><a id="line.285"> protected abstract ClassLoader doGetClassLoader() throws Throwable;</a> |
| <span class="sourceLineNo">286</span><a id="line.286"> }</a> |
| <span class="sourceLineNo">287</span><a id="line.287">}</a> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
