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| <pre><span class="sourceLineNo">001</span><a id="line.1">package org.apache.fulcrum.factory;</a> |
| <span class="sourceLineNo">002</span><a id="line.2"></a> |
| <span class="sourceLineNo">003</span><a id="line.3">/*</a> |
| <span class="sourceLineNo">004</span><a id="line.4"> * Licensed to the Apache Software Foundation (ASF) under one</a> |
| <span class="sourceLineNo">005</span><a id="line.5"> * or more contributor license agreements. See the NOTICE file</a> |
| <span class="sourceLineNo">006</span><a id="line.6"> * distributed with this work for additional information</a> |
| <span class="sourceLineNo">007</span><a id="line.7"> * regarding copyright ownership. The ASF licenses this file</a> |
| <span class="sourceLineNo">008</span><a id="line.8"> * to you under the Apache License, Version 2.0 (the</a> |
| <span class="sourceLineNo">009</span><a id="line.9"> * "License"); you may not use this file except in compliance</a> |
| <span class="sourceLineNo">010</span><a id="line.10"> * with the License. You may obtain a copy of the License at</a> |
| <span class="sourceLineNo">011</span><a id="line.11"> *</a> |
| <span class="sourceLineNo">012</span><a id="line.12"> * http://www.apache.org/licenses/LICENSE-2.0</a> |
| <span class="sourceLineNo">013</span><a id="line.13"> *</a> |
| <span class="sourceLineNo">014</span><a id="line.14"> * Unless required by applicable law or agreed to in writing,</a> |
| <span class="sourceLineNo">015</span><a id="line.15"> * software distributed under the License is distributed on an</a> |
| <span class="sourceLineNo">016</span><a id="line.16"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</a> |
| <span class="sourceLineNo">017</span><a id="line.17"> * KIND, either express or implied. See the License for the</a> |
| <span class="sourceLineNo">018</span><a id="line.18"> * specific language governing permissions and limitations</a> |
| <span class="sourceLineNo">019</span><a id="line.19"> * under the License.</a> |
| <span class="sourceLineNo">020</span><a id="line.20"> */</a> |
| <span class="sourceLineNo">021</span><a id="line.21"></a> |
| <span class="sourceLineNo">022</span><a id="line.22">import java.io.ByteArrayInputStream;</a> |
| <span class="sourceLineNo">023</span><a id="line.23">import java.io.ByteArrayOutputStream;</a> |
| <span class="sourceLineNo">024</span><a id="line.24">import java.io.IOException;</a> |
| <span class="sourceLineNo">025</span><a id="line.25">import java.io.ObjectOutputStream;</a> |
| <span class="sourceLineNo">026</span><a id="line.26">import java.util.ArrayList;</a> |
| <span class="sourceLineNo">027</span><a id="line.27">import java.util.HashMap;</a> |
| <span class="sourceLineNo">028</span><a id="line.28">import java.util.concurrent.ConcurrentHashMap;</a> |
| <span class="sourceLineNo">029</span><a id="line.29"></a> |
| <span class="sourceLineNo">030</span><a id="line.30">import org.apache.avalon.framework.activity.Disposable;</a> |
| <span class="sourceLineNo">031</span><a id="line.31">import org.apache.avalon.framework.activity.Initializable;</a> |
| <span class="sourceLineNo">032</span><a id="line.32">import org.apache.avalon.framework.configuration.Configurable;</a> |
| <span class="sourceLineNo">033</span><a id="line.33">import org.apache.avalon.framework.configuration.Configuration;</a> |
| <span class="sourceLineNo">034</span><a id="line.34">import org.apache.avalon.framework.configuration.ConfigurationException;</a> |
| <span class="sourceLineNo">035</span><a id="line.35">import org.apache.avalon.framework.logger.AbstractLogEnabled;</a> |
| <span class="sourceLineNo">036</span><a id="line.36">import org.apache.fulcrum.factory.utils.ObjectInputStreamForContext;</a> |
| <span class="sourceLineNo">037</span><a id="line.37"></a> |
| <span class="sourceLineNo">038</span><a id="line.38">/**</a> |
| <span class="sourceLineNo">039</span><a id="line.39"> * The Factory Service instantiates objects using specified class loaders. If</a> |
| <span class="sourceLineNo">040</span><a id="line.40"> * none is specified, the default one will be used.</a> |
| <span class="sourceLineNo">041</span><a id="line.41"> * </a> |
| <span class="sourceLineNo">042</span><a id="line.42"> * avalon.component name="factory" lifestyle="singleton" avalon.service</a> |
| <span class="sourceLineNo">043</span><a id="line.43"> * type="org.apache.fulcrum.factory.FactoryService"</a> |
| <span class="sourceLineNo">044</span><a id="line.44"> *</a> |
| <span class="sourceLineNo">045</span><a id="line.45"> * @author <a href="mailto:epugh@upstate.com">Eric Pugh</a></a> |
| <span class="sourceLineNo">046</span><a id="line.46"> * @author <a href="mailto:ilkka.priha@simsoft.fi">Ilkka Priha</a></a> |
| <span class="sourceLineNo">047</span><a id="line.47"> * @author <a href="mailto:mcconnell@apache.org">Stephen McConnell</a></a> |
| <span class="sourceLineNo">048</span><a id="line.48"> * @version $Id$</a> |
| <span class="sourceLineNo">049</span><a id="line.49"> *</a> |
| <span class="sourceLineNo">050</span><a id="line.50"> */</a> |
| <span class="sourceLineNo">051</span><a id="line.51">public class DefaultFactoryService extends AbstractLogEnabled</a> |
| <span class="sourceLineNo">052</span><a id="line.52"> implements FactoryService, Configurable, Initializable, Disposable {</a> |
| <span class="sourceLineNo">053</span><a id="line.53"></a> |
| <span class="sourceLineNo">054</span><a id="line.54"> /**</a> |
| <span class="sourceLineNo">055</span><a id="line.55"> * The property specifying a set of additional class loaders.</a> |
| <span class="sourceLineNo">056</span><a id="line.56"> */</a> |
| <span class="sourceLineNo">057</span><a id="line.57"> private static final String CLASS_LOADER = "classloader";</a> |
| <span class="sourceLineNo">058</span><a id="line.58"></a> |
| <span class="sourceLineNo">059</span><a id="line.59"> /**</a> |
| <span class="sourceLineNo">060</span><a id="line.60"> * The property prefix specifying additional object factories.</a> |
| <span class="sourceLineNo">061</span><a id="line.61"> */</a> |
| <span class="sourceLineNo">062</span><a id="line.62"> private static final String OBJECT_FACTORY = "object-factory";</a> |
| <span class="sourceLineNo">063</span><a id="line.63"></a> |
| <span class="sourceLineNo">064</span><a id="line.64"> /**</a> |
| <span class="sourceLineNo">065</span><a id="line.65"> * The name of the default factory.</a> |
| <span class="sourceLineNo">066</span><a id="line.66"> */</a> |
| <span class="sourceLineNo">067</span><a id="line.67"> protected static final String DEFAULT_FACTORY = "default";</a> |
| <span class="sourceLineNo">068</span><a id="line.68"></a> |
| <span class="sourceLineNo">069</span><a id="line.69"> /**</a> |
| <span class="sourceLineNo">070</span><a id="line.70"> * Primitive classes for reflection of constructors.</a> |
| <span class="sourceLineNo">071</span><a id="line.71"> */</a> |
| <span class="sourceLineNo">072</span><a id="line.72"> private static HashMap<String, Class<?>> primitiveClasses = new HashMap<String, Class<?>>(8);</a> |
| <span class="sourceLineNo">073</span><a id="line.73"></a> |
| <span class="sourceLineNo">074</span><a id="line.74"> {</a> |
| <span class="sourceLineNo">075</span><a id="line.75"> primitiveClasses.put(Boolean.TYPE.toString(), Boolean.TYPE);</a> |
| <span class="sourceLineNo">076</span><a id="line.76"> primitiveClasses.put(Character.TYPE.toString(), Character.TYPE);</a> |
| <span class="sourceLineNo">077</span><a id="line.77"> primitiveClasses.put(Byte.TYPE.toString(), Byte.TYPE);</a> |
| <span class="sourceLineNo">078</span><a id="line.78"> primitiveClasses.put(Short.TYPE.toString(), Short.TYPE);</a> |
| <span class="sourceLineNo">079</span><a id="line.79"> primitiveClasses.put(Integer.TYPE.toString(), Integer.TYPE);</a> |
| <span class="sourceLineNo">080</span><a id="line.80"> primitiveClasses.put(Long.TYPE.toString(), Long.TYPE);</a> |
| <span class="sourceLineNo">081</span><a id="line.81"> primitiveClasses.put(Float.TYPE.toString(), Float.TYPE);</a> |
| <span class="sourceLineNo">082</span><a id="line.82"> primitiveClasses.put(Double.TYPE.toString(), Double.TYPE);</a> |
| <span class="sourceLineNo">083</span><a id="line.83"> }</a> |
| <span class="sourceLineNo">084</span><a id="line.84"></a> |
| <span class="sourceLineNo">085</span><a id="line.85"> /**</a> |
| <span class="sourceLineNo">086</span><a id="line.86"> * temporary storage of class names between configure and initialize</a> |
| <span class="sourceLineNo">087</span><a id="line.87"> */</a> |
| <span class="sourceLineNo">088</span><a id="line.88"> private String[] loaderNames;</a> |
| <span class="sourceLineNo">089</span><a id="line.89"> /**</a> |
| <span class="sourceLineNo">090</span><a id="line.90"> * Additional class loaders.</a> |
| <span class="sourceLineNo">091</span><a id="line.91"> */</a> |
| <span class="sourceLineNo">092</span><a id="line.92"> private ArrayList<ClassLoader> classLoaders = new ArrayList<ClassLoader>();</a> |
| <span class="sourceLineNo">093</span><a id="line.93"> /**</a> |
| <span class="sourceLineNo">094</span><a id="line.94"> * Customized object factories.</a> |
| <span class="sourceLineNo">095</span><a id="line.95"> */</a> |
| <span class="sourceLineNo">096</span><a id="line.96"> private ConcurrentHashMap<String, Factory<?>> objectFactories = new ConcurrentHashMap<String, Factory<?>>();</a> |
| <span class="sourceLineNo">097</span><a id="line.97"> /**</a> |
| <span class="sourceLineNo">098</span><a id="line.98"> * Customized object factory classes.</a> |
| <span class="sourceLineNo">099</span><a id="line.99"> */</a> |
| <span class="sourceLineNo">100</span><a id="line.100"> private ConcurrentHashMap<String, String> objectFactoryClasses = new ConcurrentHashMap<String, String>();</a> |
| <span class="sourceLineNo">101</span><a id="line.101"></a> |
| <span class="sourceLineNo">102</span><a id="line.102"> /**</a> |
| <span class="sourceLineNo">103</span><a id="line.103"> * Gets the class of a primitive type.</a> |
| <span class="sourceLineNo">104</span><a id="line.104"> *</a> |
| <span class="sourceLineNo">105</span><a id="line.105"> * @param type a primitive type.</a> |
| <span class="sourceLineNo">106</span><a id="line.106"> * @return the corresponding class, or null.</a> |
| <span class="sourceLineNo">107</span><a id="line.107"> */</a> |
| <span class="sourceLineNo">108</span><a id="line.108"> protected static Class<?> getPrimitiveClass(String type) </a> |
| <span class="sourceLineNo">109</span><a id="line.109"> {</a> |
| <span class="sourceLineNo">110</span><a id="line.110"> return primitiveClasses.get(type);</a> |
| <span class="sourceLineNo">111</span><a id="line.111"> }</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"> * Gets an instance of a named class.</a> |
| <span class="sourceLineNo">115</span><a id="line.115"> *</a> |
| <span class="sourceLineNo">116</span><a id="line.116"> * @param className the name of the class.</a> |
| <span class="sourceLineNo">117</span><a id="line.117"> * @return the instance.</a> |
| <span class="sourceLineNo">118</span><a id="line.118"> * @throws FactoryException if instantiation fails.</a> |
| <span class="sourceLineNo">119</span><a id="line.119"> */</a> |
| <span class="sourceLineNo">120</span><a id="line.120"> @Override</a> |
| <span class="sourceLineNo">121</span><a id="line.121"> public <T> T getInstance(String className) throws FactoryException </a> |
| <span class="sourceLineNo">122</span><a id="line.122"> {</a> |
| <span class="sourceLineNo">123</span><a id="line.123"> if (className == null) {</a> |
| <span class="sourceLineNo">124</span><a id="line.124"> throw new FactoryException("Missing String className");</a> |
| <span class="sourceLineNo">125</span><a id="line.125"> }</a> |
| <span class="sourceLineNo">126</span><a id="line.126"> Factory<T> factory = getFactory(className);</a> |
| <span class="sourceLineNo">127</span><a id="line.127"> if (factory == null) {</a> |
| <span class="sourceLineNo">128</span><a id="line.128"> Class<T> clazz;</a> |
| <span class="sourceLineNo">129</span><a id="line.129"> try {</a> |
| <span class="sourceLineNo">130</span><a id="line.130"> clazz = loadClass(className);</a> |
| <span class="sourceLineNo">131</span><a id="line.131"> } catch (ClassNotFoundException x) {</a> |
| <span class="sourceLineNo">132</span><a id="line.132"> throw new FactoryException("Instantiation failed for class " + className, x);</a> |
| <span class="sourceLineNo">133</span><a id="line.133"> }</a> |
| <span class="sourceLineNo">134</span><a id="line.134"> return getInstance(clazz);</a> |
| <span class="sourceLineNo">135</span><a id="line.135"> } else {</a> |
| <span class="sourceLineNo">136</span><a id="line.136"> return factory.getInstance();</a> |
| <span class="sourceLineNo">137</span><a id="line.137"> }</a> |
| <span class="sourceLineNo">138</span><a id="line.138"> }</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"> * Gets an instance of a named class using a specified class loader.</a> |
| <span class="sourceLineNo">142</span><a id="line.142"> *</a> |
| <span class="sourceLineNo">143</span><a id="line.143"> * <p></a> |
| <span class="sourceLineNo">144</span><a id="line.144"> * Class loaders are supported only if the isLoaderSupported method returns</a> |
| <span class="sourceLineNo">145</span><a id="line.145"> * true. Otherwise the loader parameter is ignored.</a> |
| <span class="sourceLineNo">146</span><a id="line.146"> *</a> |
| <span class="sourceLineNo">147</span><a id="line.147"> * @param className the name of the class.</a> |
| <span class="sourceLineNo">148</span><a id="line.148"> * @param loader the class loader.</a> |
| <span class="sourceLineNo">149</span><a id="line.149"> * @return the instance.</a> |
| <span class="sourceLineNo">150</span><a id="line.150"> * @throws FactoryException if instantiation fails.</a> |
| <span class="sourceLineNo">151</span><a id="line.151"> */</a> |
| <span class="sourceLineNo">152</span><a id="line.152"> @Override</a> |
| <span class="sourceLineNo">153</span><a id="line.153"> public <T> T getInstance(String className, ClassLoader loader) throws FactoryException </a> |
| <span class="sourceLineNo">154</span><a id="line.154"> {</a> |
| <span class="sourceLineNo">155</span><a id="line.155"> Factory<T> factory = getFactory(className);</a> |
| <span class="sourceLineNo">156</span><a id="line.156"> if (factory == null) {</a> |
| <span class="sourceLineNo">157</span><a id="line.157"> if (loader != null) {</a> |
| <span class="sourceLineNo">158</span><a id="line.158"> Class<T> clazz;</a> |
| <span class="sourceLineNo">159</span><a id="line.159"> try {</a> |
| <span class="sourceLineNo">160</span><a id="line.160"> clazz = loadClass(className, loader);</a> |
| <span class="sourceLineNo">161</span><a id="line.161"> } catch (ClassNotFoundException x) {</a> |
| <span class="sourceLineNo">162</span><a id="line.162"> throw new FactoryException("Instantiation failed for class " + className, x);</a> |
| <span class="sourceLineNo">163</span><a id="line.163"> }</a> |
| <span class="sourceLineNo">164</span><a id="line.164"> return getInstance(clazz);</a> |
| <span class="sourceLineNo">165</span><a id="line.165"> } else {</a> |
| <span class="sourceLineNo">166</span><a id="line.166"> return getInstance(className);</a> |
| <span class="sourceLineNo">167</span><a id="line.167"> }</a> |
| <span class="sourceLineNo">168</span><a id="line.168"> } else {</a> |
| <span class="sourceLineNo">169</span><a id="line.169"> return factory.getInstance(loader);</a> |
| <span class="sourceLineNo">170</span><a id="line.170"> }</a> |
| <span class="sourceLineNo">171</span><a id="line.171"> }</a> |
| <span class="sourceLineNo">172</span><a id="line.172"></a> |
| <span class="sourceLineNo">173</span><a id="line.173"> /**</a> |
| <span class="sourceLineNo">174</span><a id="line.174"> * Gets an instance of a named class. Parameters for its constructor are given</a> |
| <span class="sourceLineNo">175</span><a id="line.175"> * as an array of objects, primitive types must be wrapped with a corresponding</a> |
| <span class="sourceLineNo">176</span><a id="line.176"> * class.</a> |
| <span class="sourceLineNo">177</span><a id="line.177"> *</a> |
| <span class="sourceLineNo">178</span><a id="line.178"> * @param className the name of the class.</a> |
| <span class="sourceLineNo">179</span><a id="line.179"> * @param params an array containing the parameters of the constructor.</a> |
| <span class="sourceLineNo">180</span><a id="line.180"> * @param signature an array containing the signature of the constructor.</a> |
| <span class="sourceLineNo">181</span><a id="line.181"> * @return the instance.</a> |
| <span class="sourceLineNo">182</span><a id="line.182"> * @throws FactoryException if instantiation fails.</a> |
| <span class="sourceLineNo">183</span><a id="line.183"> */</a> |
| <span class="sourceLineNo">184</span><a id="line.184"> @Override</a> |
| <span class="sourceLineNo">185</span><a id="line.185"> public <T> T getInstance(String className, Object[] params, String[] signature) throws FactoryException </a> |
| <span class="sourceLineNo">186</span><a id="line.186"> {</a> |
| <span class="sourceLineNo">187</span><a id="line.187"> Factory<T> factory = getFactory(className);</a> |
| <span class="sourceLineNo">188</span><a id="line.188"> if (factory == null) {</a> |
| <span class="sourceLineNo">189</span><a id="line.189"> Class<T> clazz;</a> |
| <span class="sourceLineNo">190</span><a id="line.190"> try {</a> |
| <span class="sourceLineNo">191</span><a id="line.191"> clazz = loadClass(className);</a> |
| <span class="sourceLineNo">192</span><a id="line.192"> } catch (ClassNotFoundException x) {</a> |
| <span class="sourceLineNo">193</span><a id="line.193"> throw new FactoryException("Instantiation failed for class " + className, x);</a> |
| <span class="sourceLineNo">194</span><a id="line.194"> }</a> |
| <span class="sourceLineNo">195</span><a id="line.195"> return getInstance(clazz, params, signature);</a> |
| <span class="sourceLineNo">196</span><a id="line.196"> } else {</a> |
| <span class="sourceLineNo">197</span><a id="line.197"> return factory.getInstance(params, signature);</a> |
| <span class="sourceLineNo">198</span><a id="line.198"> }</a> |
| <span class="sourceLineNo">199</span><a id="line.199"> }</a> |
| <span class="sourceLineNo">200</span><a id="line.200"></a> |
| <span class="sourceLineNo">201</span><a id="line.201"> /**</a> |
| <span class="sourceLineNo">202</span><a id="line.202"> * Gets an instance of a named class using a specified class loader. Parameters</a> |
| <span class="sourceLineNo">203</span><a id="line.203"> * for its constructor are given as an array of objects, primitive types must be</a> |
| <span class="sourceLineNo">204</span><a id="line.204"> * wrapped with a corresponding class.</a> |
| <span class="sourceLineNo">205</span><a id="line.205"> *</a> |
| <span class="sourceLineNo">206</span><a id="line.206"> * <p></a> |
| <span class="sourceLineNo">207</span><a id="line.207"> * Class loaders are supported only if the isLoaderSupported method returns</a> |
| <span class="sourceLineNo">208</span><a id="line.208"> * true. Otherwise the loader parameter is ignored.</a> |
| <span class="sourceLineNo">209</span><a id="line.209"> * </p></a> |
| <span class="sourceLineNo">210</span><a id="line.210"> *</a> |
| <span class="sourceLineNo">211</span><a id="line.211"> * @param <T> Type of the class</a> |
| <span class="sourceLineNo">212</span><a id="line.212"> * @param className the name of the class.</a> |
| <span class="sourceLineNo">213</span><a id="line.213"> * @param loader the class loader.</a> |
| <span class="sourceLineNo">214</span><a id="line.214"> * @param params an array containing the parameters of the constructor.</a> |
| <span class="sourceLineNo">215</span><a id="line.215"> * @param signature an array containing the signature of the constructor.</a> |
| <span class="sourceLineNo">216</span><a id="line.216"> * @return the instance.</a> |
| <span class="sourceLineNo">217</span><a id="line.217"> * @throws FactoryException if instantiation fails.</a> |
| <span class="sourceLineNo">218</span><a id="line.218"> */</a> |
| <span class="sourceLineNo">219</span><a id="line.219"> @Override</a> |
| <span class="sourceLineNo">220</span><a id="line.220"> public <T> T getInstance(String className, ClassLoader loader, Object[] params, String[] signature)</a> |
| <span class="sourceLineNo">221</span><a id="line.221"> throws FactoryException </a> |
| <span class="sourceLineNo">222</span><a id="line.222"> {</a> |
| <span class="sourceLineNo">223</span><a id="line.223"> Factory<T> factory = getFactory(className);</a> |
| <span class="sourceLineNo">224</span><a id="line.224"> if (factory == null) {</a> |
| <span class="sourceLineNo">225</span><a id="line.225"> if (loader != null) {</a> |
| <span class="sourceLineNo">226</span><a id="line.226"> Class<T> clazz;</a> |
| <span class="sourceLineNo">227</span><a id="line.227"> try {</a> |
| <span class="sourceLineNo">228</span><a id="line.228"> clazz = loadClass(className, loader);</a> |
| <span class="sourceLineNo">229</span><a id="line.229"> } catch (ClassNotFoundException x) {</a> |
| <span class="sourceLineNo">230</span><a id="line.230"> throw new FactoryException("Instantiation failed for class " + className, x);</a> |
| <span class="sourceLineNo">231</span><a id="line.231"> }</a> |
| <span class="sourceLineNo">232</span><a id="line.232"> return getInstance(clazz, params, signature);</a> |
| <span class="sourceLineNo">233</span><a id="line.233"> } else {</a> |
| <span class="sourceLineNo">234</span><a id="line.234"> return getInstance(className, params, signature);</a> |
| <span class="sourceLineNo">235</span><a id="line.235"> }</a> |
| <span class="sourceLineNo">236</span><a id="line.236"> } else {</a> |
| <span class="sourceLineNo">237</span><a id="line.237"> return factory.getInstance(loader, params, signature);</a> |
| <span class="sourceLineNo">238</span><a id="line.238"> }</a> |
| <span class="sourceLineNo">239</span><a id="line.239"> }</a> |
| <span class="sourceLineNo">240</span><a id="line.240"></a> |
| <span class="sourceLineNo">241</span><a id="line.241"> /**</a> |
| <span class="sourceLineNo">242</span><a id="line.242"> * Tests if specified class loaders are supported for a named class.</a> |
| <span class="sourceLineNo">243</span><a id="line.243"> *</a> |
| <span class="sourceLineNo">244</span><a id="line.244"> * @param className the name of the class.</a> |
| <span class="sourceLineNo">245</span><a id="line.245"> * @return true if class loaders are supported, false otherwise.</a> |
| <span class="sourceLineNo">246</span><a id="line.246"> * @throws FactoryException if test fails.</a> |
| <span class="sourceLineNo">247</span><a id="line.247"> */</a> |
| <span class="sourceLineNo">248</span><a id="line.248"> @Override</a> |
| <span class="sourceLineNo">249</span><a id="line.249"> public boolean isLoaderSupported(String className) throws FactoryException </a> |
| <span class="sourceLineNo">250</span><a id="line.250"> {</a> |
| <span class="sourceLineNo">251</span><a id="line.251"> Factory<?> factory = getFactory(className);</a> |
| <span class="sourceLineNo">252</span><a id="line.252"> return factory != null ? factory.isLoaderSupported() : true;</a> |
| <span class="sourceLineNo">253</span><a id="line.253"> }</a> |
| <span class="sourceLineNo">254</span><a id="line.254"></a> |
| <span class="sourceLineNo">255</span><a id="line.255"> /**</a> |
| <span class="sourceLineNo">256</span><a id="line.256"> * Gets an instance of a specified class.</a> |
| <span class="sourceLineNo">257</span><a id="line.257"> *</a> |
| <span class="sourceLineNo">258</span><a id="line.258"> * @param <T> Type of the class</a> |
| <span class="sourceLineNo">259</span><a id="line.259"> * @param clazz the class.</a> |
| <span class="sourceLineNo">260</span><a id="line.260"> * @return the instance.</a> |
| <span class="sourceLineNo">261</span><a id="line.261"> * @throws FactoryException if instantiation fails.</a> |
| <span class="sourceLineNo">262</span><a id="line.262"> */</a> |
| <span class="sourceLineNo">263</span><a id="line.263"> @Override</a> |
| <span class="sourceLineNo">264</span><a id="line.264"> public <T> T getInstance(Class<T> clazz) throws FactoryException </a> |
| <span class="sourceLineNo">265</span><a id="line.265"> {</a> |
| <span class="sourceLineNo">266</span><a id="line.266"> try {</a> |
| <span class="sourceLineNo">267</span><a id="line.267"> return clazz.newInstance();</a> |
| <span class="sourceLineNo">268</span><a id="line.268"> } catch (Exception x) {</a> |
| <span class="sourceLineNo">269</span><a id="line.269"> throw new FactoryException("Instantiation failed for " + clazz.getName(), x);</a> |
| <span class="sourceLineNo">270</span><a id="line.270"> }</a> |
| <span class="sourceLineNo">271</span><a id="line.271"> }</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"> * Gets an instance of a specified class. Parameters for its constructor are</a> |
| <span class="sourceLineNo">275</span><a id="line.275"> * given as an array of objects, primitive types must be wrapped with a</a> |
| <span class="sourceLineNo">276</span><a id="line.276"> * corresponding class.</a> |
| <span class="sourceLineNo">277</span><a id="line.277"> *</a> |
| <span class="sourceLineNo">278</span><a id="line.278"> * @param <T> Type of the class</a> |
| <span class="sourceLineNo">279</span><a id="line.279"> * @param clazz the class</a> |
| <span class="sourceLineNo">280</span><a id="line.280"> * @param params an array containing the parameters of the constructor</a> |
| <span class="sourceLineNo">281</span><a id="line.281"> * @param signature an array containing the signature of the constructor</a> |
| <span class="sourceLineNo">282</span><a id="line.282"> * @return the instance</a> |
| <span class="sourceLineNo">283</span><a id="line.283"> * @throws FactoryException if instantiation fails.</a> |
| <span class="sourceLineNo">284</span><a id="line.284"> */</a> |
| <span class="sourceLineNo">285</span><a id="line.285"> protected <T> T getInstance(Class<T> clazz, Object params[], String signature[]) </a> |
| <span class="sourceLineNo">286</span><a id="line.286"> throws FactoryException </a> |
| <span class="sourceLineNo">287</span><a id="line.287"> {</a> |
| <span class="sourceLineNo">288</span><a id="line.288"> /* Try to construct. */</a> |
| <span class="sourceLineNo">289</span><a id="line.289"> try {</a> |
| <span class="sourceLineNo">290</span><a id="line.290"> Class<?>[] sign = getSignature(clazz, params, signature);</a> |
| <span class="sourceLineNo">291</span><a id="line.291"> return clazz.getConstructor(sign).newInstance(params);</a> |
| <span class="sourceLineNo">292</span><a id="line.292"> } catch (Exception x) {</a> |
| <span class="sourceLineNo">293</span><a id="line.293"> throw new FactoryException("Instantiation failed for " + clazz.getName(), x);</a> |
| <span class="sourceLineNo">294</span><a id="line.294"> }</a> |
| <span class="sourceLineNo">295</span><a id="line.295"> }</a> |
| <span class="sourceLineNo">296</span><a id="line.296"></a> |
| <span class="sourceLineNo">297</span><a id="line.297"> /**</a> |
| <span class="sourceLineNo">298</span><a id="line.298"> * Gets the signature classes for parameters of a method of a class.</a> |
| <span class="sourceLineNo">299</span><a id="line.299"> *</a> |
| <span class="sourceLineNo">300</span><a id="line.300"> * @param clazz the class.</a> |
| <span class="sourceLineNo">301</span><a id="line.301"> * @param params an array containing the parameters of the method.</a> |
| <span class="sourceLineNo">302</span><a id="line.302"> * @param signature an array containing the signature of the method.</a> |
| <span class="sourceLineNo">303</span><a id="line.303"> * @return an array of signature classes. Note that in some cases objects in the</a> |
| <span class="sourceLineNo">304</span><a id="line.304"> * parameter array can be switched to the context of a different class</a> |
| <span class="sourceLineNo">305</span><a id="line.305"> * loader.</a> |
| <span class="sourceLineNo">306</span><a id="line.306"> * @throws ClassNotFoundException if any of the classes is not found.</a> |
| <span class="sourceLineNo">307</span><a id="line.307"> */</a> |
| <span class="sourceLineNo">308</span><a id="line.308"> @Override</a> |
| <span class="sourceLineNo">309</span><a id="line.309"> public Class<?>[] getSignature(Class<?> clazz, Object params[], String signature[]) </a> |
| <span class="sourceLineNo">310</span><a id="line.310"> throws ClassNotFoundException </a> |
| <span class="sourceLineNo">311</span><a id="line.311"> {</a> |
| <span class="sourceLineNo">312</span><a id="line.312"> if (signature != null) {</a> |
| <span class="sourceLineNo">313</span><a id="line.313"> /* We have parameters. */</a> |
| <span class="sourceLineNo">314</span><a id="line.314"> ClassLoader tempLoader;</a> |
| <span class="sourceLineNo">315</span><a id="line.315"> ClassLoader loader = clazz.getClassLoader();</a> |
| <span class="sourceLineNo">316</span><a id="line.316"> Class<?>[] sign = new Class[signature.length];</a> |
| <span class="sourceLineNo">317</span><a id="line.317"> for (int i = 0; i < signature.length; i++) {</a> |
| <span class="sourceLineNo">318</span><a id="line.318"> /* Check primitive types. */</a> |
| <span class="sourceLineNo">319</span><a id="line.319"> sign[i] = getPrimitiveClass(signature[i]);</a> |
| <span class="sourceLineNo">320</span><a id="line.320"> if (sign[i] == null) {</a> |
| <span class="sourceLineNo">321</span><a id="line.321"> /* Not a primitive one, continue building. */</a> |
| <span class="sourceLineNo">322</span><a id="line.322"> if (loader != null) {</a> |
| <span class="sourceLineNo">323</span><a id="line.323"> /* Use the class loader of the target object. */</a> |
| <span class="sourceLineNo">324</span><a id="line.324"> sign[i] = loader.loadClass(signature[i]);</a> |
| <span class="sourceLineNo">325</span><a id="line.325"> tempLoader = sign[i].getClassLoader();</a> |
| <span class="sourceLineNo">326</span><a id="line.326"> if (params[i] != null && tempLoader != null</a> |
| <span class="sourceLineNo">327</span><a id="line.327"> && !tempLoader.equals(params[i].getClass().getClassLoader())) {</a> |
| <span class="sourceLineNo">328</span><a id="line.328"> /*</a> |
| <span class="sourceLineNo">329</span><a id="line.329"> * The class uses a different class loader, switch the parameter.</a> |
| <span class="sourceLineNo">330</span><a id="line.330"> */</a> |
| <span class="sourceLineNo">331</span><a id="line.331"> params[i] = switchObjectContext(params[i], loader);</a> |
| <span class="sourceLineNo">332</span><a id="line.332"> }</a> |
| <span class="sourceLineNo">333</span><a id="line.333"> } else {</a> |
| <span class="sourceLineNo">334</span><a id="line.334"> /* Use the default class loader. */</a> |
| <span class="sourceLineNo">335</span><a id="line.335"> sign[i] = loadClass(signature[i]);</a> |
| <span class="sourceLineNo">336</span><a id="line.336"> }</a> |
| <span class="sourceLineNo">337</span><a id="line.337"> }</a> |
| <span class="sourceLineNo">338</span><a id="line.338"> }</a> |
| <span class="sourceLineNo">339</span><a id="line.339"> return sign;</a> |
| <span class="sourceLineNo">340</span><a id="line.340"> } else {</a> |
| <span class="sourceLineNo">341</span><a id="line.341"> return null;</a> |
| <span class="sourceLineNo">342</span><a id="line.342"> }</a> |
| <span class="sourceLineNo">343</span><a id="line.343"> }</a> |
| <span class="sourceLineNo">344</span><a id="line.344"></a> |
| <span class="sourceLineNo">345</span><a id="line.345"> /**</a> |
| <span class="sourceLineNo">346</span><a id="line.346"> * Switches an object into the context of a different class loader.</a> |
| <span class="sourceLineNo">347</span><a id="line.347"> *</a> |
| <span class="sourceLineNo">348</span><a id="line.348"> * @param object an object to switch.</a> |
| <span class="sourceLineNo">349</span><a id="line.349"> * @param loader the ClassLoader to use</a> |
| <span class="sourceLineNo">350</span><a id="line.350"> * @param loader the loader of the new context.</a> |
| <span class="sourceLineNo">351</span><a id="line.351"> * @return the object</a> |
| <span class="sourceLineNo">352</span><a id="line.352"> */</a> |
| <span class="sourceLineNo">353</span><a id="line.353"> protected Object switchObjectContext(Object object, ClassLoader loader) </a> |
| <span class="sourceLineNo">354</span><a id="line.354"> {</a> |
| <span class="sourceLineNo">355</span><a id="line.355"> ByteArrayOutputStream bout = new ByteArrayOutputStream();</a> |
| <span class="sourceLineNo">356</span><a id="line.356"></a> |
| <span class="sourceLineNo">357</span><a id="line.357"> try </a> |
| <span class="sourceLineNo">358</span><a id="line.358"> {</a> |
| <span class="sourceLineNo">359</span><a id="line.359"> ObjectOutputStream out = new ObjectOutputStream(bout);</a> |
| <span class="sourceLineNo">360</span><a id="line.360"> out.writeObject(object);</a> |
| <span class="sourceLineNo">361</span><a id="line.361"> out.flush();</a> |
| <span class="sourceLineNo">362</span><a id="line.362"> } </a> |
| <span class="sourceLineNo">363</span><a id="line.363"> catch (IOException x) </a> |
| <span class="sourceLineNo">364</span><a id="line.364"> {</a> |
| <span class="sourceLineNo">365</span><a id="line.365"> return object;</a> |
| <span class="sourceLineNo">366</span><a id="line.366"> }</a> |
| <span class="sourceLineNo">367</span><a id="line.367"></a> |
| <span class="sourceLineNo">368</span><a id="line.368"> ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());</a> |
| <span class="sourceLineNo">369</span><a id="line.369"> ObjectInputStreamForContext in = null;</a> |
| <span class="sourceLineNo">370</span><a id="line.370"></a> |
| <span class="sourceLineNo">371</span><a id="line.371"> try </a> |
| <span class="sourceLineNo">372</span><a id="line.372"> {</a> |
| <span class="sourceLineNo">373</span><a id="line.373"> in = new ObjectInputStreamForContext(bin, loader);</a> |
| <span class="sourceLineNo">374</span><a id="line.374"> return in.readObject();</a> |
| <span class="sourceLineNo">375</span><a id="line.375"> } </a> |
| <span class="sourceLineNo">376</span><a id="line.376"> catch (Exception x) </a> |
| <span class="sourceLineNo">377</span><a id="line.377"> {</a> |
| <span class="sourceLineNo">378</span><a id="line.378"> return object;</a> |
| <span class="sourceLineNo">379</span><a id="line.379"> } </a> |
| <span class="sourceLineNo">380</span><a id="line.380"> finally </a> |
| <span class="sourceLineNo">381</span><a id="line.381"> {</a> |
| <span class="sourceLineNo">382</span><a id="line.382"> if (in != null) </a> |
| <span class="sourceLineNo">383</span><a id="line.383"> {</a> |
| <span class="sourceLineNo">384</span><a id="line.384"> try </a> |
| <span class="sourceLineNo">385</span><a id="line.385"> {</a> |
| <span class="sourceLineNo">386</span><a id="line.386"> in.close();</a> |
| <span class="sourceLineNo">387</span><a id="line.387"> } </a> |
| <span class="sourceLineNo">388</span><a id="line.388"> catch (IOException e) </a> |
| <span class="sourceLineNo">389</span><a id="line.389"> {</a> |
| <span class="sourceLineNo">390</span><a id="line.390"> // close quietly</a> |
| <span class="sourceLineNo">391</span><a id="line.391"> }</a> |
| <span class="sourceLineNo">392</span><a id="line.392"> }</a> |
| <span class="sourceLineNo">393</span><a id="line.393"> }</a> |
| <span class="sourceLineNo">394</span><a id="line.394"> }</a> |
| <span class="sourceLineNo">395</span><a id="line.395"></a> |
| <span class="sourceLineNo">396</span><a id="line.396"> /**</a> |
| <span class="sourceLineNo">397</span><a id="line.397"> * Loads the named class using the default class loader.</a> |
| <span class="sourceLineNo">398</span><a id="line.398"> *</a> |
| <span class="sourceLineNo">399</span><a id="line.399"> * @param className the name of the class to load.</a> |
| <span class="sourceLineNo">400</span><a id="line.400"> * @return {@inheritDoc} the loaded class.</a> |
| <span class="sourceLineNo">401</span><a id="line.401"> * @throws ClassNotFoundException if the class was not found.</a> |
| <span class="sourceLineNo">402</span><a id="line.402"> */</a> |
| <span class="sourceLineNo">403</span><a id="line.403"> @SuppressWarnings("unchecked")</a> |
| <span class="sourceLineNo">404</span><a id="line.404"> protected <T> Class<T> loadClass(String className) throws ClassNotFoundException </a> |
| <span class="sourceLineNo">405</span><a id="line.405"> {</a> |
| <span class="sourceLineNo">406</span><a id="line.406"> ClassLoader loader = this.getClass().getClassLoader();</a> |
| <span class="sourceLineNo">407</span><a id="line.407"> try </a> |
| <span class="sourceLineNo">408</span><a id="line.408"> {</a> |
| <span class="sourceLineNo">409</span><a id="line.409"> Class<T> clazz;</a> |
| <span class="sourceLineNo">410</span><a id="line.410"></a> |
| <span class="sourceLineNo">411</span><a id="line.411"> if (loader != null) </a> |
| <span class="sourceLineNo">412</span><a id="line.412"> {</a> |
| <span class="sourceLineNo">413</span><a id="line.413"> clazz = (Class<T>) loader.loadClass(className);</a> |
| <span class="sourceLineNo">414</span><a id="line.414"> } </a> |
| <span class="sourceLineNo">415</span><a id="line.415"> else </a> |
| <span class="sourceLineNo">416</span><a id="line.416"> {</a> |
| <span class="sourceLineNo">417</span><a id="line.417"> clazz = (Class<T>) Class.forName(className);</a> |
| <span class="sourceLineNo">418</span><a id="line.418"> }</a> |
| <span class="sourceLineNo">419</span><a id="line.419"></a> |
| <span class="sourceLineNo">420</span><a id="line.420"> return clazz;</a> |
| <span class="sourceLineNo">421</span><a id="line.421"> } </a> |
| <span class="sourceLineNo">422</span><a id="line.422"> catch (ClassNotFoundException x) </a> |
| <span class="sourceLineNo">423</span><a id="line.423"> {</a> |
| <span class="sourceLineNo">424</span><a id="line.424"> /* Go through additional loaders. */</a> |
| <span class="sourceLineNo">425</span><a id="line.425"> for (ClassLoader l : classLoaders) </a> |
| <span class="sourceLineNo">426</span><a id="line.426"> {</a> |
| <span class="sourceLineNo">427</span><a id="line.427"> try </a> |
| <span class="sourceLineNo">428</span><a id="line.428"> {</a> |
| <span class="sourceLineNo">429</span><a id="line.429"> return (Class<T>) l.loadClass(className);</a> |
| <span class="sourceLineNo">430</span><a id="line.430"> } </a> |
| <span class="sourceLineNo">431</span><a id="line.431"> catch (ClassNotFoundException xx) </a> |
| <span class="sourceLineNo">432</span><a id="line.432"> {</a> |
| <span class="sourceLineNo">433</span><a id="line.433"> // continue</a> |
| <span class="sourceLineNo">434</span><a id="line.434"> }</a> |
| <span class="sourceLineNo">435</span><a id="line.435"> }</a> |
| <span class="sourceLineNo">436</span><a id="line.436"> /* Give up. */</a> |
| <span class="sourceLineNo">437</span><a id="line.437"> throw x;</a> |
| <span class="sourceLineNo">438</span><a id="line.438"> }</a> |
| <span class="sourceLineNo">439</span><a id="line.439"> }</a> |
| <span class="sourceLineNo">440</span><a id="line.440"></a> |
| <span class="sourceLineNo">441</span><a id="line.441"> /**</a> |
| <span class="sourceLineNo">442</span><a id="line.442"> * Loads the named class using a specified class loader.</a> |
| <span class="sourceLineNo">443</span><a id="line.443"> *</a> |
| <span class="sourceLineNo">444</span><a id="line.444"> * @param className the name of the class to load.</a> |
| <span class="sourceLineNo">445</span><a id="line.445"> * @param loader the loader to use.</a> |
| <span class="sourceLineNo">446</span><a id="line.446"> * @return {@inheritDoc} the loaded class.</a> |
| <span class="sourceLineNo">447</span><a id="line.447"> * @throws ClassNotFoundException if the class was not found.</a> |
| <span class="sourceLineNo">448</span><a id="line.448"> */</a> |
| <span class="sourceLineNo">449</span><a id="line.449"> @SuppressWarnings("unchecked")</a> |
| <span class="sourceLineNo">450</span><a id="line.450"> protected <T> Class<T> loadClass(String className, ClassLoader loader) throws ClassNotFoundException </a> |
| <span class="sourceLineNo">451</span><a id="line.451"> {</a> |
| <span class="sourceLineNo">452</span><a id="line.452"> if (loader != null) </a> |
| <span class="sourceLineNo">453</span><a id="line.453"> {</a> |
| <span class="sourceLineNo">454</span><a id="line.454"> return (Class<T>) loader.loadClass(className);</a> |
| <span class="sourceLineNo">455</span><a id="line.455"> } </a> |
| <span class="sourceLineNo">456</span><a id="line.456"> else </a> |
| <span class="sourceLineNo">457</span><a id="line.457"> {</a> |
| <span class="sourceLineNo">458</span><a id="line.458"> return loadClass(className);</a> |
| <span class="sourceLineNo">459</span><a id="line.459"> }</a> |
| <span class="sourceLineNo">460</span><a id="line.460"> }</a> |
| <span class="sourceLineNo">461</span><a id="line.461"></a> |
| <span class="sourceLineNo">462</span><a id="line.462"> /**</a> |
| <span class="sourceLineNo">463</span><a id="line.463"> * Gets a customized factory for a named class. If no class-specific factory is</a> |
| <span class="sourceLineNo">464</span><a id="line.464"> * specified but a default factory is, will use the default factory.</a> |
| <span class="sourceLineNo">465</span><a id="line.465"> *</a> |
| <span class="sourceLineNo">466</span><a id="line.466"> * @param className the name of the class to load.</a> |
| <span class="sourceLineNo">467</span><a id="line.467"> * @return {@inheritDoc} the factory, or null if not specified and no default.</a> |
| <span class="sourceLineNo">468</span><a id="line.468"> * @throws FactoryException if instantiation of the factory fails.</a> |
| <span class="sourceLineNo">469</span><a id="line.469"> */</a> |
| <span class="sourceLineNo">470</span><a id="line.470"> @SuppressWarnings("unchecked")</a> |
| <span class="sourceLineNo">471</span><a id="line.471"> protected <T> Factory<T> getFactory(String className) throws FactoryException </a> |
| <span class="sourceLineNo">472</span><a id="line.472"> {</a> |
| <span class="sourceLineNo">473</span><a id="line.473"> Factory<T> factory = (Factory<T>) objectFactories.get(className);</a> |
| <span class="sourceLineNo">474</span><a id="line.474"> if (factory == null) </a> |
| <span class="sourceLineNo">475</span><a id="line.475"> {</a> |
| <span class="sourceLineNo">476</span><a id="line.476"> // No named factory for this; try the default, if one exists</a> |
| <span class="sourceLineNo">477</span><a id="line.477"> factory = (Factory<T>) objectFactories.get(DEFAULT_FACTORY);</a> |
| <span class="sourceLineNo">478</span><a id="line.478"> }</a> |
| <span class="sourceLineNo">479</span><a id="line.479"> </a> |
| <span class="sourceLineNo">480</span><a id="line.480"> if (factory == null) {</a> |
| <span class="sourceLineNo">481</span><a id="line.481"> </a> |
| <span class="sourceLineNo">482</span><a id="line.482"> /* Not yet instantiated... */</a> |
| <span class="sourceLineNo">483</span><a id="line.483"> String factoryClass = objectFactoryClasses.get(className);</a> |
| <span class="sourceLineNo">484</span><a id="line.484"> if (factoryClass == null) </a> |
| <span class="sourceLineNo">485</span><a id="line.485"> {</a> |
| <span class="sourceLineNo">486</span><a id="line.486"> factoryClass = objectFactoryClasses.get(DEFAULT_FACTORY);</a> |
| <span class="sourceLineNo">487</span><a id="line.487"> }</a> |
| <span class="sourceLineNo">488</span><a id="line.488"> </a> |
| <span class="sourceLineNo">489</span><a id="line.489"> if (factoryClass == null) {</a> |
| <span class="sourceLineNo">490</span><a id="line.490"> return null;</a> |
| <span class="sourceLineNo">491</span><a id="line.491"> }</a> |
| <span class="sourceLineNo">492</span><a id="line.492"></a> |
| <span class="sourceLineNo">493</span><a id="line.493"> try {</a> |
| <span class="sourceLineNo">494</span><a id="line.494"> factory = getInstance(factoryClass);</a> |
| <span class="sourceLineNo">495</span><a id="line.495"> factory.init(className);</a> |
| <span class="sourceLineNo">496</span><a id="line.496"> } </a> |
| <span class="sourceLineNo">497</span><a id="line.497"> catch (ClassCastException x) </a> |
| <span class="sourceLineNo">498</span><a id="line.498"> {</a> |
| <span class="sourceLineNo">499</span><a id="line.499"> throw new FactoryException("Incorrect factory " + factoryClass + " for class " + className, x);</a> |
| <span class="sourceLineNo">500</span><a id="line.500"> }</a> |
| <span class="sourceLineNo">501</span><a id="line.501"> </a> |
| <span class="sourceLineNo">502</span><a id="line.502"> Factory<T> _factory = (Factory<T>) objectFactories.putIfAbsent(className, factory);</a> |
| <span class="sourceLineNo">503</span><a id="line.503"> if (_factory != null) </a> |
| <span class="sourceLineNo">504</span><a id="line.504"> {</a> |
| <span class="sourceLineNo">505</span><a id="line.505"> // Already created - take first instance</a> |
| <span class="sourceLineNo">506</span><a id="line.506"> factory = _factory;</a> |
| <span class="sourceLineNo">507</span><a id="line.507"> }</a> |
| <span class="sourceLineNo">508</span><a id="line.508"> }</a> |
| <span class="sourceLineNo">509</span><a id="line.509"></a> |
| <span class="sourceLineNo">510</span><a id="line.510"> return factory;</a> |
| <span class="sourceLineNo">511</span><a id="line.511"> }</a> |
| <span class="sourceLineNo">512</span><a id="line.512"></a> |
| <span class="sourceLineNo">513</span><a id="line.513"> // ---------------- Avalon Lifecycle Methods ---------------------</a> |
| <span class="sourceLineNo">514</span><a id="line.514"></a> |
| <span class="sourceLineNo">515</span><a id="line.515"> /* (non-Javadoc)</a> |
| <span class="sourceLineNo">516</span><a id="line.516"> * Avalon component lifecycle method</a> |
| <span class="sourceLineNo">517</span><a id="line.517"> * @see org.apache.avalon.framework.configuration.Configurable#configure(org.apache.avalon.framework.configuration.Configuration)</a> |
| <span class="sourceLineNo">518</span><a id="line.518"> */</a> |
| <span class="sourceLineNo">519</span><a id="line.519"> @Override</a> |
| <span class="sourceLineNo">520</span><a id="line.520"> public void configure(Configuration conf) throws ConfigurationException </a> |
| <span class="sourceLineNo">521</span><a id="line.521"> {</a> |
| <span class="sourceLineNo">522</span><a id="line.522"> final Configuration[] loaders = conf.getChildren(CLASS_LOADER);</a> |
| <span class="sourceLineNo">523</span><a id="line.523"> if (loaders != null) </a> |
| <span class="sourceLineNo">524</span><a id="line.524"> {</a> |
| <span class="sourceLineNo">525</span><a id="line.525"> loaderNames = new String[loaders.length];</a> |
| <span class="sourceLineNo">526</span><a id="line.526"> for (int i = 0; i < loaders.length; i++) </a> |
| <span class="sourceLineNo">527</span><a id="line.527"> {</a> |
| <span class="sourceLineNo">528</span><a id="line.528"> loaderNames[i] = loaders[i].getValue();</a> |
| <span class="sourceLineNo">529</span><a id="line.529"> }</a> |
| <span class="sourceLineNo">530</span><a id="line.530"> }</a> |
| <span class="sourceLineNo">531</span><a id="line.531"></a> |
| <span class="sourceLineNo">532</span><a id="line.532"> final Configuration factories = conf.getChild(OBJECT_FACTORY, false);</a> |
| <span class="sourceLineNo">533</span><a id="line.533"> if (factories != null) </a> |
| <span class="sourceLineNo">534</span><a id="line.534"> {</a> |
| <span class="sourceLineNo">535</span><a id="line.535"> // Store the factory to the table as a string and</a> |
| <span class="sourceLineNo">536</span><a id="line.536"> // instantiate it by using the service when needed.</a> |
| <span class="sourceLineNo">537</span><a id="line.537"> Configuration[] nameVal = factories.getChildren();</a> |
| <span class="sourceLineNo">538</span><a id="line.538"> for (Configuration entry : nameVal)</a> |
| <span class="sourceLineNo">539</span><a id="line.539"> objectFactoryClasses.put(entry.getName(), entry.getValue());</a> |
| <span class="sourceLineNo">540</span><a id="line.540"></a> |
| <span class="sourceLineNo">541</span><a id="line.541"> }</a> |
| <span class="sourceLineNo">542</span><a id="line.542"> }</a> |
| <span class="sourceLineNo">543</span><a id="line.543"></a> |
| <span class="sourceLineNo">544</span><a id="line.544"> /**</a> |
| <span class="sourceLineNo">545</span><a id="line.545"> * Avalon component lifecycle method Initializes the service by loading default</a> |
| <span class="sourceLineNo">546</span><a id="line.546"> * class loaders and customized object factories.</a> |
| <span class="sourceLineNo">547</span><a id="line.547"> *</a> |
| <span class="sourceLineNo">548</span><a id="line.548"> * @throws Exception if initialization fails.</a> |
| <span class="sourceLineNo">549</span><a id="line.549"> */</a> |
| <span class="sourceLineNo">550</span><a id="line.550"> @Override</a> |
| <span class="sourceLineNo">551</span><a id="line.551"> public void initialize() throws Exception </a> |
| <span class="sourceLineNo">552</span><a id="line.552"> {</a> |
| <span class="sourceLineNo">553</span><a id="line.553"> if (loaderNames != null) </a> |
| <span class="sourceLineNo">554</span><a id="line.554"> {</a> |
| <span class="sourceLineNo">555</span><a id="line.555"> for (String className : loaderNames) </a> |
| <span class="sourceLineNo">556</span><a id="line.556"> {</a> |
| <span class="sourceLineNo">557</span><a id="line.557"> try </a> |
| <span class="sourceLineNo">558</span><a id="line.558"> {</a> |
| <span class="sourceLineNo">559</span><a id="line.559"> ClassLoader loader = (ClassLoader) loadClass(className).newInstance();</a> |
| <span class="sourceLineNo">560</span><a id="line.560"> classLoaders.add(loader);</a> |
| <span class="sourceLineNo">561</span><a id="line.561"> } </a> |
| <span class="sourceLineNo">562</span><a id="line.562"> catch (Exception x) </a> |
| <span class="sourceLineNo">563</span><a id="line.563"> {</a> |
| <span class="sourceLineNo">564</span><a id="line.564"> throw new Exception("No such class loader '" + className + "' for DefaultFactoryService", x);</a> |
| <span class="sourceLineNo">565</span><a id="line.565"> }</a> |
| <span class="sourceLineNo">566</span><a id="line.566"> }</a> |
| <span class="sourceLineNo">567</span><a id="line.567"> loaderNames = null;</a> |
| <span class="sourceLineNo">568</span><a id="line.568"> }</a> |
| <span class="sourceLineNo">569</span><a id="line.569"> }</a> |
| <span class="sourceLineNo">570</span><a id="line.570"></a> |
| <span class="sourceLineNo">571</span><a id="line.571"> /**</a> |
| <span class="sourceLineNo">572</span><a id="line.572"> * Avalon component lifecycle method Clear lists and maps</a> |
| <span class="sourceLineNo">573</span><a id="line.573"> */</a> |
| <span class="sourceLineNo">574</span><a id="line.574"> @Override</a> |
| <span class="sourceLineNo">575</span><a id="line.575"> public void dispose() </a> |
| <span class="sourceLineNo">576</span><a id="line.576"> {</a> |
| <span class="sourceLineNo">577</span><a id="line.577"> objectFactories.clear();</a> |
| <span class="sourceLineNo">578</span><a id="line.578"> objectFactoryClasses.clear();</a> |
| <span class="sourceLineNo">579</span><a id="line.579"> classLoaders.clear();</a> |
| <span class="sourceLineNo">580</span><a id="line.580"> }</a> |
| <span class="sourceLineNo">581</span><a id="line.581">}</a> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
