Modified:
websites/production/commons/content/proper/commons-logging/xref-test/org/apache/commons/logging/pathable/ChildFirstTestCase.html
==============================================================================
---
websites/production/commons/content/proper/commons-logging/xref-test/org/apache/commons/logging/pathable/ChildFirstTestCase.html
(original)
+++
websites/production/commons/content/proper/commons-logging/xref-test/org/apache/commons/logging/pathable/ChildFirstTestCase.html
Thu Jul 4 12:10:51 2024
@@ -103,228 +103,227 @@
<a class="jxr_linenumber" name="L95" href="#L95">95</a> <em
class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L96" href="#L96">96</a> <em
class="jxr_javadoccomment"> * Utility method to convert an
enumeration-of-URLs into an array of URLs.</em>
<a class="jxr_linenumber" name="L97" href="#L97">97</a> <em
class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="L98" href="#L98">98</a> <strong
class="jxr_keyword">private</strong> <strong
class="jxr_keyword">static</strong> URL[] toURLArray(<strong
class="jxr_keyword">final</strong> Enumeration e) {
-<a class="jxr_linenumber" name="L99" href="#L99">99</a> <strong
class="jxr_keyword">final</strong> ArrayList l = <strong
class="jxr_keyword">new</strong> ArrayList();
+<a class="jxr_linenumber" name="L98" href="#L98">98</a> <strong
class="jxr_keyword">private</strong> <strong
class="jxr_keyword">static</strong> URL[] toURLArray(<strong
class="jxr_keyword">final</strong> Enumeration<URL> e) {
+<a class="jxr_linenumber" name="L99" href="#L99">99</a> <strong
class="jxr_keyword">final</strong> ArrayList<URL> l = <strong
class="jxr_keyword">new</strong> ArrayList<>();
<a class="jxr_linenumber" name="L100" href="#L100">100</a> <strong
class="jxr_keyword">while</strong> (e.hasMoreElements()) {
-<a class="jxr_linenumber" name="L101" href="#L101">101</a> <strong
class="jxr_keyword">final</strong> URL u = (URL) e.nextElement();
-<a class="jxr_linenumber" name="L102" href="#L102">102</a>
l.add(u);
-<a class="jxr_linenumber" name="L103" href="#L103">103</a> }
-<a class="jxr_linenumber" name="L104" href="#L104">104</a> <strong
class="jxr_keyword">final</strong> URL[] tmp = <strong
class="jxr_keyword">new</strong> URL[l.size()];
-<a class="jxr_linenumber" name="L105" href="#L105">105</a> <strong
class="jxr_keyword">return</strong> (URL[]) l.toArray(tmp);
-<a class="jxr_linenumber" name="L106" href="#L106">106</a> }
-<a class="jxr_linenumber" name="L107" href="#L107">107</a>
-<a class="jxr_linenumber" name="L108" href="#L108">108</a> <em
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L109" href="#L109">109</a> <em
class="jxr_javadoccomment"> * Utility method to return the set of all class
loaders in the</em>
-<a class="jxr_linenumber" name="L110" href="#L110">110</a> <em
class="jxr_javadoccomment"> * parent chain starting from the one that
loaded the class for</em>
-<a class="jxr_linenumber" name="L111" href="#L111">111</a> <em
class="jxr_javadoccomment"> * this object instance.</em>
-<a class="jxr_linenumber" name="L112" href="#L112">112</a> <em
class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="L113" href="#L113">113</a> <strong
class="jxr_keyword">private</strong> Set getAncestorCLs() {
-<a class="jxr_linenumber" name="L114" href="#L114">114</a> <strong
class="jxr_keyword">final</strong> Set s = <strong
class="jxr_keyword">new</strong> HashSet();
-<a class="jxr_linenumber" name="L115" href="#L115">115</a> ClassLoader
cl = <strong class="jxr_keyword">this</strong>.getClass().getClassLoader();
-<a class="jxr_linenumber" name="L116" href="#L116">116</a> <strong
class="jxr_keyword">while</strong> (cl != <strong
class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="L117" href="#L117">117</a>
s.add(cl);
-<a class="jxr_linenumber" name="L118" href="#L118">118</a> cl =
cl.getParent();
-<a class="jxr_linenumber" name="L119" href="#L119">119</a> }
-<a class="jxr_linenumber" name="L120" href="#L120">120</a> <strong
class="jxr_keyword">return</strong> s;
-<a class="jxr_linenumber" name="L121" href="#L121">121</a> }
-<a class="jxr_linenumber" name="L122" href="#L122">122</a>
-<a class="jxr_linenumber" name="L123" href="#L123">123</a> <em
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L124" href="#L124">124</a> <em
class="jxr_javadoccomment"> * Test that the class loader hierarchy is as
expected, and that</em>
-<a class="jxr_linenumber" name="L125" href="#L125">125</a> <em
class="jxr_javadoccomment"> * calling loadClass() on various class loaders
works as expected.</em>
-<a class="jxr_linenumber" name="L126" href="#L126">126</a> <em
class="jxr_javadoccomment"> * Note that for this test case, parent-first
classloading is</em>
-<a class="jxr_linenumber" name="L127" href="#L127">127</a> <em
class="jxr_javadoccomment"> * in effect.</em>
-<a class="jxr_linenumber" name="L128" href="#L128">128</a> <em
class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="L129" href="#L129">129</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testPaths() <strong class="jxr_keyword">throws</strong> Exception {
-<a class="jxr_linenumber" name="L130" href="#L130">130</a> <em
class="jxr_comment">// the context class loader is not expected to be null</em>
-<a class="jxr_linenumber" name="L131" href="#L131">131</a> <strong
class="jxr_keyword">final</strong> ClassLoader contextLoader =
Thread.currentThread().getContextClassLoader();
-<a class="jxr_linenumber" name="L132" href="#L132">132</a>
assertNotNull(<span class="jxr_string">"Context class loader is null"</span>,
contextLoader);
-<a class="jxr_linenumber" name="L133" href="#L133">133</a>
assertEquals(<span class="jxr_string">"Context class loader has unexpected
type"</span>,
-<a class="jxr_linenumber" name="L134" href="#L134">134</a>
PathableClassLoader.<strong class="jxr_keyword">class</strong>.getName(),
-<a class="jxr_linenumber" name="L135" href="#L135">135</a>
contextLoader.getClass().getName());
-<a class="jxr_linenumber" name="L136" href="#L136">136</a>
-<a class="jxr_linenumber" name="L137" href="#L137">137</a> <em
class="jxr_comment">// the class loader that loaded this class is obviously not
null</em>
-<a class="jxr_linenumber" name="L138" href="#L138">138</a> <strong
class="jxr_keyword">final</strong> ClassLoader thisLoader = <strong
class="jxr_keyword">this</strong>.getClass().getClassLoader();
-<a class="jxr_linenumber" name="L139" href="#L139">139</a>
assertNotNull(<span class="jxr_string">"thisLoader is null"</span>, thisLoader);
-<a class="jxr_linenumber" name="L140" href="#L140">140</a>
assertEquals(<span class="jxr_string">"thisLoader has unexpected type"</span>,
-<a class="jxr_linenumber" name="L141" href="#L141">141</a>
PathableClassLoader.<strong class="jxr_keyword">class</strong>.getName(),
-<a class="jxr_linenumber" name="L142" href="#L142">142</a>
thisLoader.getClass().getName());
-<a class="jxr_linenumber" name="L143" href="#L143">143</a>
-<a class="jxr_linenumber" name="L144" href="#L144">144</a> <em
class="jxr_comment">// the suite method specified that the context class
loader's parent</em>
-<a class="jxr_linenumber" name="L145" href="#L145">145</a> <em
class="jxr_comment">// is the loader that loaded this test case.</em>
-<a class="jxr_linenumber" name="L146" href="#L146">146</a>
assertSame(<span class="jxr_string">"Context class loader is not child of
thisLoader"</span>,
-<a class="jxr_linenumber" name="L147" href="#L147">147</a>
thisLoader, contextLoader.getParent());
-<a class="jxr_linenumber" name="L148" href="#L148">148</a>
-<a class="jxr_linenumber" name="L149" href="#L149">149</a> <em
class="jxr_comment">// thisLoader's parent should be available</em>
-<a class="jxr_linenumber" name="L150" href="#L150">150</a> <strong
class="jxr_keyword">final</strong> ClassLoader parentLoader =
thisLoader.getParent();
-<a class="jxr_linenumber" name="L151" href="#L151">151</a>
assertNotNull(<span class="jxr_string">"Parent class loader is null"</span>,
parentLoader);
-<a class="jxr_linenumber" name="L152" href="#L152">152</a>
assertEquals(<span class="jxr_string">"Parent class loader has unexpected
type"</span>,
-<a class="jxr_linenumber" name="L153" href="#L153">153</a>
PathableClassLoader.<strong class="jxr_keyword">class</strong>.getName(),
-<a class="jxr_linenumber" name="L154" href="#L154">154</a>
parentLoader.getClass().getName());
-<a class="jxr_linenumber" name="L155" href="#L155">155</a>
-<a class="jxr_linenumber" name="L156" href="#L156">156</a> <em
class="jxr_comment">// parent should have a parent of null</em>
-<a class="jxr_linenumber" name="L157" href="#L157">157</a>
assertNull(<span class="jxr_string">"Parent class loader has non-null
parent"</span>, parentLoader.getParent());
-<a class="jxr_linenumber" name="L158" href="#L158">158</a>
-<a class="jxr_linenumber" name="L159" href="#L159">159</a> <em
class="jxr_comment">// getSystemClassloader is not a PathableClassLoader; it's
of a</em>
-<a class="jxr_linenumber" name="L160" href="#L160">160</a> <em
class="jxr_comment">// built-in type. This also verifies that system class
loader is none of</em>
-<a class="jxr_linenumber" name="L161" href="#L161">161</a> <em
class="jxr_comment">// (context, child, parent).</em>
-<a class="jxr_linenumber" name="L162" href="#L162">162</a> <strong
class="jxr_keyword">final</strong> ClassLoader systemLoader =
ClassLoader.getSystemClassLoader();
-<a class="jxr_linenumber" name="L163" href="#L163">163</a>
assertNotNull(<span class="jxr_string">"System class loader is null"</span>,
systemLoader);
-<a class="jxr_linenumber" name="L164" href="#L164">164</a>
assertFalse(<span class="jxr_string">"System class loader has unexpected
type"</span>,
-<a class="jxr_linenumber" name="L165" href="#L165">165</a>
PathableClassLoader.<strong class="jxr_keyword">class</strong>.getName().equals(
-<a class="jxr_linenumber" name="L166" href="#L166">166</a>
systemLoader.getClass().getName()));
-<a class="jxr_linenumber" name="L167" href="#L167">167</a>
-<a class="jxr_linenumber" name="L168" href="#L168">168</a> <em
class="jxr_comment">// junit classes should be visible; their class loader is
not</em>
-<a class="jxr_linenumber" name="L169" href="#L169">169</a> <em
class="jxr_comment">// in the hierarchy of parent class loaders for this
class,</em>
-<a class="jxr_linenumber" name="L170" href="#L170">170</a> <em
class="jxr_comment">// though it is accessible due to trickery in the
PathableClassLoader.</em>
-<a class="jxr_linenumber" name="L171" href="#L171">171</a> <strong
class="jxr_keyword">final</strong> Class junitTest =
contextLoader.loadClass(<span class="jxr_string">"junit.framework.Test"</span>);
-<a class="jxr_linenumber" name="L172" href="#L172">172</a> <strong
class="jxr_keyword">final</strong> Set ancestorCLs = getAncestorCLs();
-<a class="jxr_linenumber" name="L173" href="#L173">173</a>
assertFalse(<span class="jxr_string">"Junit not loaded by ancestor class
loader"</span>,
-<a class="jxr_linenumber" name="L174" href="#L174">174</a>
ancestorCLs.contains(junitTest.getClassLoader()));
-<a class="jxr_linenumber" name="L175" href="#L175">175</a>
-<a class="jxr_linenumber" name="L176" href="#L176">176</a> <em
class="jxr_comment">// jcl api classes should be visible only via the
parent</em>
-<a class="jxr_linenumber" name="L177" href="#L177">177</a> <strong
class="jxr_keyword">final</strong> Class logClass =
contextLoader.loadClass(<span
class="jxr_string">"org.apache.commons.logging.Log"</span>);
-<a class="jxr_linenumber" name="L178" href="#L178">178</a>
assertSame(<span class="jxr_string">"Log class not loaded via parent"</span>,
-<a class="jxr_linenumber" name="L179" href="#L179">179</a>
logClass.getClassLoader(), parentLoader);
-<a class="jxr_linenumber" name="L180" href="#L180">180</a>
-<a class="jxr_linenumber" name="L181" href="#L181">181</a> <em
class="jxr_comment">// jcl adapter classes should be visible via both parent
and child. However</em>
-<a class="jxr_linenumber" name="L182" href="#L182">182</a> <em
class="jxr_comment">// as the class loaders are child-first we should see the
child one.</em>
-<a class="jxr_linenumber" name="L183" href="#L183">183</a> <strong
class="jxr_keyword">final</strong> Class log4jClass =
contextLoader.loadClass(<span
class="jxr_string">"org.apache.commons.logging.impl.Log4JLogger"</span>);
-<a class="jxr_linenumber" name="L184" href="#L184">184</a>
assertSame(<span class="jxr_string">"Log4JLogger not loaded via child"</span>,
-<a class="jxr_linenumber" name="L185" href="#L185">185</a>
log4jClass.getClassLoader(), thisLoader);
-<a class="jxr_linenumber" name="L186" href="#L186">186</a>
-<a class="jxr_linenumber" name="L187" href="#L187">187</a> <em
class="jxr_comment">// test classes should be visible via the child only</em>
-<a class="jxr_linenumber" name="L188" href="#L188">188</a> <strong
class="jxr_keyword">final</strong> Class testClass =
contextLoader.loadClass(<span
class="jxr_string">"org.apache.commons.logging.PathableTestSuite"</span>);
-<a class="jxr_linenumber" name="L189" href="#L189">189</a>
assertSame(<span class="jxr_string">"PathableTestSuite not loaded via
child"</span>,
-<a class="jxr_linenumber" name="L190" href="#L190">190</a>
testClass.getClassLoader(), thisLoader);
-<a class="jxr_linenumber" name="L191" href="#L191">191</a>
-<a class="jxr_linenumber" name="L192" href="#L192">192</a> <em
class="jxr_comment">// test loading of class that is not available</em>
-<a class="jxr_linenumber" name="L193" href="#L193">193</a> <strong
class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="L194" href="#L194">194</a> <strong
class="jxr_keyword">final</strong> Class noSuchClass =
contextLoader.loadClass(<span class="jxr_string">"no.such.class"</span>);
-<a class="jxr_linenumber" name="L195" href="#L195">195</a>
fail(<span class="jxr_string">"Class no.such.class is unexpectedly
available"</span>);
-<a class="jxr_linenumber" name="L196" href="#L196">196</a>
assertNotNull(noSuchClass); <em class="jxr_comment">// silence warning about
unused var</em>
-<a class="jxr_linenumber" name="L197" href="#L197">197</a> } <strong
class="jxr_keyword">catch</strong> (<strong class="jxr_keyword">final</strong>
ClassNotFoundException ex) {
-<a class="jxr_linenumber" name="L198" href="#L198">198</a> <em
class="jxr_comment">// ok</em>
-<a class="jxr_linenumber" name="L199" href="#L199">199</a> }
-<a class="jxr_linenumber" name="L200" href="#L200">200</a>
-<a class="jxr_linenumber" name="L201" href="#L201">201</a> <em
class="jxr_comment">// String class class loader is null</em>
-<a class="jxr_linenumber" name="L202" href="#L202">202</a> <strong
class="jxr_keyword">final</strong> Class stringClass =
contextLoader.loadClass(<span class="jxr_string">"java.lang.String"</span>);
-<a class="jxr_linenumber" name="L203" href="#L203">203</a>
assertNull(<span class="jxr_string">"String class class loader is not
null!"</span>,
-<a class="jxr_linenumber" name="L204" href="#L204">204</a>
stringClass.getClassLoader());
-<a class="jxr_linenumber" name="L205" href="#L205">205</a> }
-<a class="jxr_linenumber" name="L206" href="#L206">206</a>
-<a class="jxr_linenumber" name="L207" href="#L207">207</a> <em
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L208" href="#L208">208</a> <em
class="jxr_javadoccomment"> * Test that the various flavors of
ClassLoader.getResource work as expected.</em>
-<a class="jxr_linenumber" name="L209" href="#L209">209</a> <em
class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="L210" href="#L210">210</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testResource() {
-<a class="jxr_linenumber" name="L211" href="#L211">211</a> URL
resource;
-<a class="jxr_linenumber" name="L212" href="#L212">212</a>
-<a class="jxr_linenumber" name="L213" href="#L213">213</a> <strong
class="jxr_keyword">final</strong> ClassLoader contextLoader =
Thread.currentThread().getContextClassLoader();
-<a class="jxr_linenumber" name="L214" href="#L214">214</a> <strong
class="jxr_keyword">final</strong> ClassLoader childLoader =
contextLoader.getParent();
-<a class="jxr_linenumber" name="L215" href="#L215">215</a>
-<a class="jxr_linenumber" name="L216" href="#L216">216</a> <em
class="jxr_comment">// getResource where it doesn't exist</em>
-<a class="jxr_linenumber" name="L217" href="#L217">217</a> resource =
childLoader.getResource(<span class="jxr_string">"nosuchfile"</span>);
-<a class="jxr_linenumber" name="L218" href="#L218">218</a>
assertNull(<span class="jxr_string">"Non-null URL returned for invalid resource
name"</span>, resource);
-<a class="jxr_linenumber" name="L219" href="#L219">219</a>
-<a class="jxr_linenumber" name="L220" href="#L220">220</a> <em
class="jxr_comment">// getResource where it is accessible only to parent class
loader</em>
-<a class="jxr_linenumber" name="L221" href="#L221">221</a> resource =
childLoader.getResource(<span
class="jxr_string">"org/apache/commons/logging/Log.class"</span>);
-<a class="jxr_linenumber" name="L222" href="#L222">222</a>
assertNotNull(<span class="jxr_string">"Unable to locate Log.class
resource"</span>, resource);
-<a class="jxr_linenumber" name="L223" href="#L223">223</a>
-<a class="jxr_linenumber" name="L224" href="#L224">224</a> <em
class="jxr_comment">// getResource where it is accessible only to child class
loader</em>
-<a class="jxr_linenumber" name="L225" href="#L225">225</a> resource =
childLoader.getResource(<span
class="jxr_string">"org/apache/commons/logging/PathableTestSuite.class"</span>);
-<a class="jxr_linenumber" name="L226" href="#L226">226</a>
assertNotNull(<span class="jxr_string">"Unable to locate
PathableTestSuite.class resource"</span>, resource);
-<a class="jxr_linenumber" name="L227" href="#L227">227</a>
-<a class="jxr_linenumber" name="L228" href="#L228">228</a> <em
class="jxr_comment">// getResource where it is accessible to both class
loaders. The one visible</em>
-<a class="jxr_linenumber" name="L229" href="#L229">229</a> <em
class="jxr_comment">// to the child should be returned. The URL returned will
be of form</em>
-<a class="jxr_linenumber" name="L230" href="#L230">230</a> <em
class="jxr_comment">// jar:file:/x/y.jar!path/to/resource. The file name part
should include the jarname</em>
-<a class="jxr_linenumber" name="L231" href="#L231">231</a> <em
class="jxr_comment">// of form commons-logging-adapters-nnnn.jar, not
commons-logging-nnnn.jar</em>
-<a class="jxr_linenumber" name="L232" href="#L232">232</a> resource =
childLoader.getResource(<span
class="jxr_string">"org/apache/commons/logging/impl/Log4JLogger.class"</span>);
-<a class="jxr_linenumber" name="L233" href="#L233">233</a>
assertNotNull(<span class="jxr_string">"Unable to locate Log4JLogger.class
resource"</span>, resource);
-<a class="jxr_linenumber" name="L234" href="#L234">234</a>
assertTrue(<span class="jxr_string">"Incorrect source for Log4JLogger
class"</span>,
-<a class="jxr_linenumber" name="L235" href="#L235">235</a>
resource.toString().indexOf(Artifacts.getAdaptersJarName()) > 0);
-<a class="jxr_linenumber" name="L236" href="#L236">236</a> }
-<a class="jxr_linenumber" name="L237" href="#L237">237</a>
-<a class="jxr_linenumber" name="L238" href="#L238">238</a> <em
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L239" href="#L239">239</a> <em
class="jxr_javadoccomment"> * Test that getResourceAsStream works.</em>
-<a class="jxr_linenumber" name="L240" href="#L240">240</a> <em
class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="L241" href="#L241">241</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testResourceAsStream() <strong class="jxr_keyword">throws</strong> Exception {
-<a class="jxr_linenumber" name="L242" href="#L242">242</a>
java.io.InputStream is;
-<a class="jxr_linenumber" name="L243" href="#L243">243</a>
-<a class="jxr_linenumber" name="L244" href="#L244">244</a> <em
class="jxr_comment">// verify the class loader hierarchy</em>
-<a class="jxr_linenumber" name="L245" href="#L245">245</a> <strong
class="jxr_keyword">final</strong> ClassLoader contextLoader =
Thread.currentThread().getContextClassLoader();
-<a class="jxr_linenumber" name="L246" href="#L246">246</a> <strong
class="jxr_keyword">final</strong> ClassLoader childLoader =
contextLoader.getParent();
-<a class="jxr_linenumber" name="L247" href="#L247">247</a> <strong
class="jxr_keyword">final</strong> ClassLoader parentLoader =
childLoader.getParent();
-<a class="jxr_linenumber" name="L248" href="#L248">248</a> <strong
class="jxr_keyword">final</strong> ClassLoader bootLoader =
parentLoader.getParent();
-<a class="jxr_linenumber" name="L249" href="#L249">249</a>
assertNull(<span class="jxr_string">"Unexpected class loader hierarchy"</span>,
bootLoader);
-<a class="jxr_linenumber" name="L250" href="#L250">250</a>
-<a class="jxr_linenumber" name="L251" href="#L251">251</a> <em
class="jxr_comment">// getResourceAsStream where no instances exist</em>
-<a class="jxr_linenumber" name="L252" href="#L252">252</a> is =
childLoader.getResourceAsStream(<span class="jxr_string">"nosuchfile"</span>);
-<a class="jxr_linenumber" name="L253" href="#L253">253</a>
assertNull(<span class="jxr_string">"Invalid resource returned non-null
stream"</span>, is);
-<a class="jxr_linenumber" name="L254" href="#L254">254</a>
-<a class="jxr_linenumber" name="L255" href="#L255">255</a> <em
class="jxr_comment">// getResourceAsStream where resource does exist</em>
-<a class="jxr_linenumber" name="L256" href="#L256">256</a> is =
childLoader.getResourceAsStream(<span
class="jxr_string">"org/apache/commons/logging/Log.class"</span>);
-<a class="jxr_linenumber" name="L257" href="#L257">257</a>
assertNotNull(<span class="jxr_string">"Null returned for valid
resource"</span>, is);
-<a class="jxr_linenumber" name="L258" href="#L258">258</a> is.close();
-<a class="jxr_linenumber" name="L259" href="#L259">259</a>
-<a class="jxr_linenumber" name="L260" href="#L260">260</a> <em
class="jxr_comment">// It would be nice to test parent-first ordering here, but
that would require</em>
-<a class="jxr_linenumber" name="L261" href="#L261">261</a> <em
class="jxr_comment">// having a resource with the same name in both the parent
and child loaders,</em>
-<a class="jxr_linenumber" name="L262" href="#L262">262</a> <em
class="jxr_comment">// but with different contents. That's a little tricky to
set up so we'll</em>
-<a class="jxr_linenumber" name="L263" href="#L263">263</a> <em
class="jxr_comment">// skip that for now.</em>
-<a class="jxr_linenumber" name="L264" href="#L264">264</a> }
-<a class="jxr_linenumber" name="L265" href="#L265">265</a>
-<a class="jxr_linenumber" name="L266" href="#L266">266</a> <em
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L267" href="#L267">267</a> <em
class="jxr_javadoccomment"> * Test that the various flavors of
ClassLoader.getResources work as expected.</em>
-<a class="jxr_linenumber" name="L268" href="#L268">268</a> <em
class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="L269" href="#L269">269</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testResources() <strong class="jxr_keyword">throws</strong> Exception {
-<a class="jxr_linenumber" name="L270" href="#L270">270</a> Enumeration
resources;
-<a class="jxr_linenumber" name="L271" href="#L271">271</a> URL[] urls;
-<a class="jxr_linenumber" name="L272" href="#L272">272</a>
-<a class="jxr_linenumber" name="L273" href="#L273">273</a> <em
class="jxr_comment">// verify the class loader hierarchy</em>
-<a class="jxr_linenumber" name="L274" href="#L274">274</a> <strong
class="jxr_keyword">final</strong> ClassLoader contextLoader =
Thread.currentThread().getContextClassLoader();
-<a class="jxr_linenumber" name="L275" href="#L275">275</a> <strong
class="jxr_keyword">final</strong> ClassLoader childLoader =
contextLoader.getParent();
-<a class="jxr_linenumber" name="L276" href="#L276">276</a> <strong
class="jxr_keyword">final</strong> ClassLoader parentLoader =
childLoader.getParent();
-<a class="jxr_linenumber" name="L277" href="#L277">277</a> <strong
class="jxr_keyword">final</strong> ClassLoader bootLoader =
parentLoader.getParent();
-<a class="jxr_linenumber" name="L278" href="#L278">278</a>
assertNull(<span class="jxr_string">"Unexpected class loader hierarchy"</span>,
bootLoader);
-<a class="jxr_linenumber" name="L279" href="#L279">279</a>
-<a class="jxr_linenumber" name="L280" href="#L280">280</a> <em
class="jxr_comment">// getResources where no instances exist</em>
-<a class="jxr_linenumber" name="L281" href="#L281">281</a> resources =
childLoader.getResources(<span class="jxr_string">"nosuchfile"</span>);
-<a class="jxr_linenumber" name="L282" href="#L282">282</a> urls =
toURLArray(resources);
-<a class="jxr_linenumber" name="L283" href="#L283">283</a>
assertEquals(<span class="jxr_string">"Non-null URL returned for invalid
resource name"</span>, 0, urls.length);
-<a class="jxr_linenumber" name="L284" href="#L284">284</a>
-<a class="jxr_linenumber" name="L285" href="#L285">285</a> <em
class="jxr_comment">// getResources where the resource only exists in the
parent</em>
-<a class="jxr_linenumber" name="L286" href="#L286">286</a> resources =
childLoader.getResources(<span
class="jxr_string">"org/apache/commons/logging/Log.class"</span>);
-<a class="jxr_linenumber" name="L287" href="#L287">287</a> urls =
toURLArray(resources);
-<a class="jxr_linenumber" name="L288" href="#L288">288</a>
assertEquals(<span class="jxr_string">"Unexpected number of Log.class resources
found"</span>, 1, urls.length);
-<a class="jxr_linenumber" name="L289" href="#L289">289</a>
-<a class="jxr_linenumber" name="L290" href="#L290">290</a> <em
class="jxr_comment">// getResources where the resource only exists in the
child</em>
-<a class="jxr_linenumber" name="L291" href="#L291">291</a> resources =
childLoader.getResources(<span
class="jxr_string">"org/apache/commons/logging/PathableTestSuite.class"</span>);
-<a class="jxr_linenumber" name="L292" href="#L292">292</a> urls =
toURLArray(resources);
-<a class="jxr_linenumber" name="L293" href="#L293">293</a>
assertEquals(<span class="jxr_string">"Unexpected number of
PathableTestSuite.class resources found"</span>, 1, urls.length);
-<a class="jxr_linenumber" name="L294" href="#L294">294</a>
-<a class="jxr_linenumber" name="L295" href="#L295">295</a> <em
class="jxr_comment">// getResources where the resource exists in both.</em>
-<a class="jxr_linenumber" name="L296" href="#L296">296</a> <em
class="jxr_comment">// resources should be returned in order (child-resource,
parent-resource).</em>
-<a class="jxr_linenumber" name="L297" href="#L297">297</a> <em
class="jxr_comment">//</em>
-<a class="jxr_linenumber" name="L298" href="#L298">298</a> <em
class="jxr_comment">// IMPORTANT: due to the fact that in java 1.4 and earlier
method</em>
-<a class="jxr_linenumber" name="L299" href="#L299">299</a> <em
class="jxr_comment">// ClassLoader.getResources is final it isn't possible for
PathableClassLoader</em>
-<a class="jxr_linenumber" name="L300" href="#L300">300</a> <em
class="jxr_comment">// to override this. So even when child-first is enabled
the resource order</em>
-<a class="jxr_linenumber" name="L301" href="#L301">301</a> <em
class="jxr_comment">// is still (parent-resources, child-resources). This test
verifies the expected</em>
-<a class="jxr_linenumber" name="L302" href="#L302">302</a> <em
class="jxr_comment">// behavior - even though it's not the desired
behavior.</em>
-<a class="jxr_linenumber" name="L303" href="#L303">303</a>
-<a class="jxr_linenumber" name="L304" href="#L304">304</a> resources =
childLoader.getResources(<span
class="jxr_string">"org/apache/commons/logging/impl/Log4JLogger.class"</span>);
-<a class="jxr_linenumber" name="L305" href="#L305">305</a> urls =
toURLArray(resources);
-<a class="jxr_linenumber" name="L306" href="#L306">306</a>
assertEquals(<span class="jxr_string">"Unexpected number of Log4JLogger.class
resources found"</span>, 2, urls.length);
-<a class="jxr_linenumber" name="L307" href="#L307">307</a>
-<a class="jxr_linenumber" name="L308" href="#L308">308</a> <em
class="jxr_comment">// There is no guarantee about the ordering of results
returned from getResources</em>
-<a class="jxr_linenumber" name="L309" href="#L309">309</a> <em
class="jxr_comment">// To make this test portable across JVMs, sort the string
to give them a known order</em>
-<a class="jxr_linenumber" name="L310" href="#L310">310</a> <strong
class="jxr_keyword">final</strong> String[] urlsToStrings = <strong
class="jxr_keyword">new</strong> String[2];
-<a class="jxr_linenumber" name="L311" href="#L311">311</a>
urlsToStrings[0] = urls[0].toString();
-<a class="jxr_linenumber" name="L312" href="#L312">312</a>
urlsToStrings[1] = urls[1].toString();
-<a class="jxr_linenumber" name="L313" href="#L313">313</a>
Arrays.sort(urlsToStrings);
-<a class="jxr_linenumber" name="L314" href="#L314">314</a>
assertTrue(<span class="jxr_string">"Incorrect source for Log4JLogger
class"</span>,
-<a class="jxr_linenumber" name="L315" href="#L315">315</a>
urlsToStrings[0].indexOf(Artifacts.getAdaptersJarName()) > 0);
-<a class="jxr_linenumber" name="L316" href="#L316">316</a>
assertTrue(<span class="jxr_string">"Incorrect source for Log4JLogger
class"</span>,
-<a class="jxr_linenumber" name="L317" href="#L317">317</a>
urlsToStrings[1].indexOf(Artifacts.getMainJarName()) > 0);
-<a class="jxr_linenumber" name="L318" href="#L318">318</a> }
-<a class="jxr_linenumber" name="L319" href="#L319">319</a> }
+<a class="jxr_linenumber" name="L101" href="#L101">101</a>
l.add(e.nextElement());
+<a class="jxr_linenumber" name="L102" href="#L102">102</a> }
+<a class="jxr_linenumber" name="L103" href="#L103">103</a> <strong
class="jxr_keyword">final</strong> URL[] tmp = <strong
class="jxr_keyword">new</strong> URL[l.size()];
+<a class="jxr_linenumber" name="L104" href="#L104">104</a> <strong
class="jxr_keyword">return</strong> l.toArray(tmp);
+<a class="jxr_linenumber" name="L105" href="#L105">105</a> }
+<a class="jxr_linenumber" name="L106" href="#L106">106</a>
+<a class="jxr_linenumber" name="L107" href="#L107">107</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L108" href="#L108">108</a> <em
class="jxr_javadoccomment"> * Utility method to return the set of all class
loaders in the</em>
+<a class="jxr_linenumber" name="L109" href="#L109">109</a> <em
class="jxr_javadoccomment"> * parent chain starting from the one that
loaded the class for</em>
+<a class="jxr_linenumber" name="L110" href="#L110">110</a> <em
class="jxr_javadoccomment"> * this object instance.</em>
+<a class="jxr_linenumber" name="L111" href="#L111">111</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L112" href="#L112">112</a> <strong
class="jxr_keyword">private</strong> Set<ClassLoader> getAncestorCLs() {
+<a class="jxr_linenumber" name="L113" href="#L113">113</a> <strong
class="jxr_keyword">final</strong> Set<ClassLoader> s = <strong
class="jxr_keyword">new</strong> HashSet<>();
+<a class="jxr_linenumber" name="L114" href="#L114">114</a> ClassLoader
cl = <strong class="jxr_keyword">this</strong>.getClass().getClassLoader();
+<a class="jxr_linenumber" name="L115" href="#L115">115</a> <strong
class="jxr_keyword">while</strong> (cl != <strong
class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="L116" href="#L116">116</a>
s.add(cl);
+<a class="jxr_linenumber" name="L117" href="#L117">117</a> cl =
cl.getParent();
+<a class="jxr_linenumber" name="L118" href="#L118">118</a> }
+<a class="jxr_linenumber" name="L119" href="#L119">119</a> <strong
class="jxr_keyword">return</strong> s;
+<a class="jxr_linenumber" name="L120" href="#L120">120</a> }
+<a class="jxr_linenumber" name="L121" href="#L121">121</a>
+<a class="jxr_linenumber" name="L122" href="#L122">122</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L123" href="#L123">123</a> <em
class="jxr_javadoccomment"> * Test that the class loader hierarchy is as
expected, and that</em>
+<a class="jxr_linenumber" name="L124" href="#L124">124</a> <em
class="jxr_javadoccomment"> * calling loadClass() on various class loaders
works as expected.</em>
+<a class="jxr_linenumber" name="L125" href="#L125">125</a> <em
class="jxr_javadoccomment"> * Note that for this test case, parent-first
classloading is</em>
+<a class="jxr_linenumber" name="L126" href="#L126">126</a> <em
class="jxr_javadoccomment"> * in effect.</em>
+<a class="jxr_linenumber" name="L127" href="#L127">127</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L128" href="#L128">128</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testPaths() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L129" href="#L129">129</a> <em
class="jxr_comment">// the context class loader is not expected to be null</em>
+<a class="jxr_linenumber" name="L130" href="#L130">130</a> <strong
class="jxr_keyword">final</strong> ClassLoader contextLoader =
Thread.currentThread().getContextClassLoader();
+<a class="jxr_linenumber" name="L131" href="#L131">131</a>
assertNotNull(<span class="jxr_string">"Context class loader is null"</span>,
contextLoader);
+<a class="jxr_linenumber" name="L132" href="#L132">132</a>
assertEquals(<span class="jxr_string">"Context class loader has unexpected
type"</span>,
+<a class="jxr_linenumber" name="L133" href="#L133">133</a>
PathableClassLoader.<strong class="jxr_keyword">class</strong>.getName(),
+<a class="jxr_linenumber" name="L134" href="#L134">134</a>
contextLoader.getClass().getName());
+<a class="jxr_linenumber" name="L135" href="#L135">135</a>
+<a class="jxr_linenumber" name="L136" href="#L136">136</a> <em
class="jxr_comment">// the class loader that loaded this class is obviously not
null</em>
+<a class="jxr_linenumber" name="L137" href="#L137">137</a> <strong
class="jxr_keyword">final</strong> ClassLoader thisLoader = <strong
class="jxr_keyword">this</strong>.getClass().getClassLoader();
+<a class="jxr_linenumber" name="L138" href="#L138">138</a>
assertNotNull(<span class="jxr_string">"thisLoader is null"</span>, thisLoader);
+<a class="jxr_linenumber" name="L139" href="#L139">139</a>
assertEquals(<span class="jxr_string">"thisLoader has unexpected type"</span>,
+<a class="jxr_linenumber" name="L140" href="#L140">140</a>
PathableClassLoader.<strong class="jxr_keyword">class</strong>.getName(),
+<a class="jxr_linenumber" name="L141" href="#L141">141</a>
thisLoader.getClass().getName());
+<a class="jxr_linenumber" name="L142" href="#L142">142</a>
+<a class="jxr_linenumber" name="L143" href="#L143">143</a> <em
class="jxr_comment">// the suite method specified that the context class
loader's parent</em>
+<a class="jxr_linenumber" name="L144" href="#L144">144</a> <em
class="jxr_comment">// is the loader that loaded this test case.</em>
+<a class="jxr_linenumber" name="L145" href="#L145">145</a>
assertSame(<span class="jxr_string">"Context class loader is not child of
thisLoader"</span>,
+<a class="jxr_linenumber" name="L146" href="#L146">146</a>
thisLoader, contextLoader.getParent());
+<a class="jxr_linenumber" name="L147" href="#L147">147</a>
+<a class="jxr_linenumber" name="L148" href="#L148">148</a> <em
class="jxr_comment">// thisLoader's parent should be available</em>
+<a class="jxr_linenumber" name="L149" href="#L149">149</a> <strong
class="jxr_keyword">final</strong> ClassLoader parentLoader =
thisLoader.getParent();
+<a class="jxr_linenumber" name="L150" href="#L150">150</a>
assertNotNull(<span class="jxr_string">"Parent class loader is null"</span>,
parentLoader);
+<a class="jxr_linenumber" name="L151" href="#L151">151</a>
assertEquals(<span class="jxr_string">"Parent class loader has unexpected
type"</span>,
+<a class="jxr_linenumber" name="L152" href="#L152">152</a>
PathableClassLoader.<strong class="jxr_keyword">class</strong>.getName(),
+<a class="jxr_linenumber" name="L153" href="#L153">153</a>
parentLoader.getClass().getName());
+<a class="jxr_linenumber" name="L154" href="#L154">154</a>
+<a class="jxr_linenumber" name="L155" href="#L155">155</a> <em
class="jxr_comment">// parent should have a parent of null</em>
+<a class="jxr_linenumber" name="L156" href="#L156">156</a>
assertNull(<span class="jxr_string">"Parent class loader has non-null
parent"</span>, parentLoader.getParent());
+<a class="jxr_linenumber" name="L157" href="#L157">157</a>
+<a class="jxr_linenumber" name="L158" href="#L158">158</a> <em
class="jxr_comment">// getSystemClassloader is not a PathableClassLoader; it's
of a</em>
+<a class="jxr_linenumber" name="L159" href="#L159">159</a> <em
class="jxr_comment">// built-in type. This also verifies that system class
loader is none of</em>
+<a class="jxr_linenumber" name="L160" href="#L160">160</a> <em
class="jxr_comment">// (context, child, parent).</em>
+<a class="jxr_linenumber" name="L161" href="#L161">161</a> <strong
class="jxr_keyword">final</strong> ClassLoader systemLoader =
ClassLoader.getSystemClassLoader();
+<a class="jxr_linenumber" name="L162" href="#L162">162</a>
assertNotNull(<span class="jxr_string">"System class loader is null"</span>,
systemLoader);
+<a class="jxr_linenumber" name="L163" href="#L163">163</a>
assertFalse(<span class="jxr_string">"System class loader has unexpected
type"</span>,
+<a class="jxr_linenumber" name="L164" href="#L164">164</a>
PathableClassLoader.<strong class="jxr_keyword">class</strong>.getName().equals(
+<a class="jxr_linenumber" name="L165" href="#L165">165</a>
systemLoader.getClass().getName()));
+<a class="jxr_linenumber" name="L166" href="#L166">166</a>
+<a class="jxr_linenumber" name="L167" href="#L167">167</a> <em
class="jxr_comment">// junit classes should be visible; their class loader is
not</em>
+<a class="jxr_linenumber" name="L168" href="#L168">168</a> <em
class="jxr_comment">// in the hierarchy of parent class loaders for this
class,</em>
+<a class="jxr_linenumber" name="L169" href="#L169">169</a> <em
class="jxr_comment">// though it is accessible due to trickery in the
PathableClassLoader.</em>
+<a class="jxr_linenumber" name="L170" href="#L170">170</a> <strong
class="jxr_keyword">final</strong> Class junitTest =
contextLoader.loadClass(<span class="jxr_string">"junit.framework.Test"</span>);
+<a class="jxr_linenumber" name="L171" href="#L171">171</a> <strong
class="jxr_keyword">final</strong> Set<ClassLoader> ancestorCLs =
getAncestorCLs();
+<a class="jxr_linenumber" name="L172" href="#L172">172</a>
assertFalse(<span class="jxr_string">"Junit not loaded by ancestor class
loader"</span>,
+<a class="jxr_linenumber" name="L173" href="#L173">173</a>
ancestorCLs.contains(junitTest.getClassLoader()));
+<a class="jxr_linenumber" name="L174" href="#L174">174</a>
+<a class="jxr_linenumber" name="L175" href="#L175">175</a> <em
class="jxr_comment">// jcl api classes should be visible only via the
parent</em>
+<a class="jxr_linenumber" name="L176" href="#L176">176</a> <strong
class="jxr_keyword">final</strong> Class logClass =
contextLoader.loadClass(<span
class="jxr_string">"org.apache.commons.logging.Log"</span>);
+<a class="jxr_linenumber" name="L177" href="#L177">177</a>
assertSame(<span class="jxr_string">"Log class not loaded via parent"</span>,
+<a class="jxr_linenumber" name="L178" href="#L178">178</a>
logClass.getClassLoader(), parentLoader);
+<a class="jxr_linenumber" name="L179" href="#L179">179</a>
+<a class="jxr_linenumber" name="L180" href="#L180">180</a> <em
class="jxr_comment">// jcl adapter classes should be visible via both parent
and child. However</em>
+<a class="jxr_linenumber" name="L181" href="#L181">181</a> <em
class="jxr_comment">// as the class loaders are child-first we should see the
child one.</em>
+<a class="jxr_linenumber" name="L182" href="#L182">182</a> <strong
class="jxr_keyword">final</strong> Class log4jClass =
contextLoader.loadClass(<span
class="jxr_string">"org.apache.commons.logging.impl.Log4JLogger"</span>);
+<a class="jxr_linenumber" name="L183" href="#L183">183</a>
assertSame(<span class="jxr_string">"Log4JLogger not loaded via child"</span>,
+<a class="jxr_linenumber" name="L184" href="#L184">184</a>
log4jClass.getClassLoader(), thisLoader);
+<a class="jxr_linenumber" name="L185" href="#L185">185</a>
+<a class="jxr_linenumber" name="L186" href="#L186">186</a> <em
class="jxr_comment">// test classes should be visible via the child only</em>
+<a class="jxr_linenumber" name="L187" href="#L187">187</a> <strong
class="jxr_keyword">final</strong> Class testClass =
contextLoader.loadClass(<span
class="jxr_string">"org.apache.commons.logging.PathableTestSuite"</span>);
+<a class="jxr_linenumber" name="L188" href="#L188">188</a>
assertSame(<span class="jxr_string">"PathableTestSuite not loaded via
child"</span>,
+<a class="jxr_linenumber" name="L189" href="#L189">189</a>
testClass.getClassLoader(), thisLoader);
+<a class="jxr_linenumber" name="L190" href="#L190">190</a>
+<a class="jxr_linenumber" name="L191" href="#L191">191</a> <em
class="jxr_comment">// test loading of class that is not available</em>
+<a class="jxr_linenumber" name="L192" href="#L192">192</a> <strong
class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="L193" href="#L193">193</a> <strong
class="jxr_keyword">final</strong> Class noSuchClass =
contextLoader.loadClass(<span class="jxr_string">"no.such.class"</span>);
+<a class="jxr_linenumber" name="L194" href="#L194">194</a>
fail(<span class="jxr_string">"Class no.such.class is unexpectedly
available"</span>);
+<a class="jxr_linenumber" name="L195" href="#L195">195</a>
assertNotNull(noSuchClass); <em class="jxr_comment">// silence warning about
unused var</em>
+<a class="jxr_linenumber" name="L196" href="#L196">196</a> } <strong
class="jxr_keyword">catch</strong> (<strong class="jxr_keyword">final</strong>
ClassNotFoundException ex) {
+<a class="jxr_linenumber" name="L197" href="#L197">197</a> <em
class="jxr_comment">// ok</em>
+<a class="jxr_linenumber" name="L198" href="#L198">198</a> }
+<a class="jxr_linenumber" name="L199" href="#L199">199</a>
+<a class="jxr_linenumber" name="L200" href="#L200">200</a> <em
class="jxr_comment">// String class class loader is null</em>
+<a class="jxr_linenumber" name="L201" href="#L201">201</a> <strong
class="jxr_keyword">final</strong> Class stringClass =
contextLoader.loadClass(<span class="jxr_string">"java.lang.String"</span>);
+<a class="jxr_linenumber" name="L202" href="#L202">202</a>
assertNull(<span class="jxr_string">"String class class loader is not
null!"</span>,
+<a class="jxr_linenumber" name="L203" href="#L203">203</a>
stringClass.getClassLoader());
+<a class="jxr_linenumber" name="L204" href="#L204">204</a> }
+<a class="jxr_linenumber" name="L205" href="#L205">205</a>
+<a class="jxr_linenumber" name="L206" href="#L206">206</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L207" href="#L207">207</a> <em
class="jxr_javadoccomment"> * Test that the various flavors of
ClassLoader.getResource work as expected.</em>
+<a class="jxr_linenumber" name="L208" href="#L208">208</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L209" href="#L209">209</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testResource() {
+<a class="jxr_linenumber" name="L210" href="#L210">210</a> URL
resource;
+<a class="jxr_linenumber" name="L211" href="#L211">211</a>
+<a class="jxr_linenumber" name="L212" href="#L212">212</a> <strong
class="jxr_keyword">final</strong> ClassLoader contextLoader =
Thread.currentThread().getContextClassLoader();
+<a class="jxr_linenumber" name="L213" href="#L213">213</a> <strong
class="jxr_keyword">final</strong> ClassLoader childLoader =
contextLoader.getParent();
+<a class="jxr_linenumber" name="L214" href="#L214">214</a>
+<a class="jxr_linenumber" name="L215" href="#L215">215</a> <em
class="jxr_comment">// getResource where it doesn't exist</em>
+<a class="jxr_linenumber" name="L216" href="#L216">216</a> resource =
childLoader.getResource(<span class="jxr_string">"nosuchfile"</span>);
+<a class="jxr_linenumber" name="L217" href="#L217">217</a>
assertNull(<span class="jxr_string">"Non-null URL returned for invalid resource
name"</span>, resource);
+<a class="jxr_linenumber" name="L218" href="#L218">218</a>
+<a class="jxr_linenumber" name="L219" href="#L219">219</a> <em
class="jxr_comment">// getResource where it is accessible only to parent class
loader</em>
+<a class="jxr_linenumber" name="L220" href="#L220">220</a> resource =
childLoader.getResource(<span
class="jxr_string">"org/apache/commons/logging/Log.class"</span>);
+<a class="jxr_linenumber" name="L221" href="#L221">221</a>
assertNotNull(<span class="jxr_string">"Unable to locate Log.class
resource"</span>, resource);
+<a class="jxr_linenumber" name="L222" href="#L222">222</a>
+<a class="jxr_linenumber" name="L223" href="#L223">223</a> <em
class="jxr_comment">// getResource where it is accessible only to child class
loader</em>
+<a class="jxr_linenumber" name="L224" href="#L224">224</a> resource =
childLoader.getResource(<span
class="jxr_string">"org/apache/commons/logging/PathableTestSuite.class"</span>);
+<a class="jxr_linenumber" name="L225" href="#L225">225</a>
assertNotNull(<span class="jxr_string">"Unable to locate
PathableTestSuite.class resource"</span>, resource);
+<a class="jxr_linenumber" name="L226" href="#L226">226</a>
+<a class="jxr_linenumber" name="L227" href="#L227">227</a> <em
class="jxr_comment">// getResource where it is accessible to both class
loaders. The one visible</em>
+<a class="jxr_linenumber" name="L228" href="#L228">228</a> <em
class="jxr_comment">// to the child should be returned. The URL returned will
be of form</em>
+<a class="jxr_linenumber" name="L229" href="#L229">229</a> <em
class="jxr_comment">// jar:file:/x/y.jar!path/to/resource. The file name part
should include the jarname</em>
+<a class="jxr_linenumber" name="L230" href="#L230">230</a> <em
class="jxr_comment">// of form commons-logging-adapters-nnnn.jar, not
commons-logging-nnnn.jar</em>
+<a class="jxr_linenumber" name="L231" href="#L231">231</a> resource =
childLoader.getResource(<span
class="jxr_string">"org/apache/commons/logging/impl/Log4JLogger.class"</span>);
+<a class="jxr_linenumber" name="L232" href="#L232">232</a>
assertNotNull(<span class="jxr_string">"Unable to locate Log4JLogger.class
resource"</span>, resource);
+<a class="jxr_linenumber" name="L233" href="#L233">233</a>
assertTrue(<span class="jxr_string">"Incorrect source for Log4JLogger
class"</span>,
+<a class="jxr_linenumber" name="L234" href="#L234">234</a>
resource.toString().indexOf(Artifacts.getAdaptersJarName()) > 0);
+<a class="jxr_linenumber" name="L235" href="#L235">235</a> }
+<a class="jxr_linenumber" name="L236" href="#L236">236</a>
+<a class="jxr_linenumber" name="L237" href="#L237">237</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L238" href="#L238">238</a> <em
class="jxr_javadoccomment"> * Test that getResourceAsStream works.</em>
+<a class="jxr_linenumber" name="L239" href="#L239">239</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L240" href="#L240">240</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testResourceAsStream() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L241" href="#L241">241</a>
java.io.InputStream is;
+<a class="jxr_linenumber" name="L242" href="#L242">242</a>
+<a class="jxr_linenumber" name="L243" href="#L243">243</a> <em
class="jxr_comment">// verify the class loader hierarchy</em>
+<a class="jxr_linenumber" name="L244" href="#L244">244</a> <strong
class="jxr_keyword">final</strong> ClassLoader contextLoader =
Thread.currentThread().getContextClassLoader();
+<a class="jxr_linenumber" name="L245" href="#L245">245</a> <strong
class="jxr_keyword">final</strong> ClassLoader childLoader =
contextLoader.getParent();
+<a class="jxr_linenumber" name="L246" href="#L246">246</a> <strong
class="jxr_keyword">final</strong> ClassLoader parentLoader =
childLoader.getParent();
+<a class="jxr_linenumber" name="L247" href="#L247">247</a> <strong
class="jxr_keyword">final</strong> ClassLoader bootLoader =
parentLoader.getParent();
+<a class="jxr_linenumber" name="L248" href="#L248">248</a>
assertNull(<span class="jxr_string">"Unexpected class loader hierarchy"</span>,
bootLoader);
+<a class="jxr_linenumber" name="L249" href="#L249">249</a>
+<a class="jxr_linenumber" name="L250" href="#L250">250</a> <em
class="jxr_comment">// getResourceAsStream where no instances exist</em>
+<a class="jxr_linenumber" name="L251" href="#L251">251</a> is =
childLoader.getResourceAsStream(<span class="jxr_string">"nosuchfile"</span>);
+<a class="jxr_linenumber" name="L252" href="#L252">252</a>
assertNull(<span class="jxr_string">"Invalid resource returned non-null
stream"</span>, is);
+<a class="jxr_linenumber" name="L253" href="#L253">253</a>
+<a class="jxr_linenumber" name="L254" href="#L254">254</a> <em
class="jxr_comment">// getResourceAsStream where resource does exist</em>
+<a class="jxr_linenumber" name="L255" href="#L255">255</a> is =
childLoader.getResourceAsStream(<span
class="jxr_string">"org/apache/commons/logging/Log.class"</span>);
+<a class="jxr_linenumber" name="L256" href="#L256">256</a>
assertNotNull(<span class="jxr_string">"Null returned for valid
resource"</span>, is);
+<a class="jxr_linenumber" name="L257" href="#L257">257</a> is.close();
+<a class="jxr_linenumber" name="L258" href="#L258">258</a>
+<a class="jxr_linenumber" name="L259" href="#L259">259</a> <em
class="jxr_comment">// It would be nice to test parent-first ordering here, but
that would require</em>
+<a class="jxr_linenumber" name="L260" href="#L260">260</a> <em
class="jxr_comment">// having a resource with the same name in both the parent
and child loaders,</em>
+<a class="jxr_linenumber" name="L261" href="#L261">261</a> <em
class="jxr_comment">// but with different contents. That's a little tricky to
set up so we'll</em>
+<a class="jxr_linenumber" name="L262" href="#L262">262</a> <em
class="jxr_comment">// skip that for now.</em>
+<a class="jxr_linenumber" name="L263" href="#L263">263</a> }
+<a class="jxr_linenumber" name="L264" href="#L264">264</a>
+<a class="jxr_linenumber" name="L265" href="#L265">265</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L266" href="#L266">266</a> <em
class="jxr_javadoccomment"> * Test that the various flavors of
ClassLoader.getResources work as expected.</em>
+<a class="jxr_linenumber" name="L267" href="#L267">267</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L268" href="#L268">268</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
testResources() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L269" href="#L269">269</a>
Enumeration<URL> resources;
+<a class="jxr_linenumber" name="L270" href="#L270">270</a> URL[] urls;
+<a class="jxr_linenumber" name="L271" href="#L271">271</a>
+<a class="jxr_linenumber" name="L272" href="#L272">272</a> <em
class="jxr_comment">// verify the class loader hierarchy</em>
+<a class="jxr_linenumber" name="L273" href="#L273">273</a> <strong
class="jxr_keyword">final</strong> ClassLoader contextLoader =
Thread.currentThread().getContextClassLoader();
+<a class="jxr_linenumber" name="L274" href="#L274">274</a> <strong
class="jxr_keyword">final</strong> ClassLoader childLoader =
contextLoader.getParent();
+<a class="jxr_linenumber" name="L275" href="#L275">275</a> <strong
class="jxr_keyword">final</strong> ClassLoader parentLoader =
childLoader.getParent();
+<a class="jxr_linenumber" name="L276" href="#L276">276</a> <strong
class="jxr_keyword">final</strong> ClassLoader bootLoader =
parentLoader.getParent();
+<a class="jxr_linenumber" name="L277" href="#L277">277</a>
assertNull(<span class="jxr_string">"Unexpected class loader hierarchy"</span>,
bootLoader);
+<a class="jxr_linenumber" name="L278" href="#L278">278</a>
+<a class="jxr_linenumber" name="L279" href="#L279">279</a> <em
class="jxr_comment">// getResources where no instances exist</em>
+<a class="jxr_linenumber" name="L280" href="#L280">280</a> resources =
childLoader.getResources(<span class="jxr_string">"nosuchfile"</span>);
+<a class="jxr_linenumber" name="L281" href="#L281">281</a> urls =
toURLArray(resources);
+<a class="jxr_linenumber" name="L282" href="#L282">282</a>
assertEquals(<span class="jxr_string">"Non-null URL returned for invalid
resource name"</span>, 0, urls.length);
+<a class="jxr_linenumber" name="L283" href="#L283">283</a>
+<a class="jxr_linenumber" name="L284" href="#L284">284</a> <em
class="jxr_comment">// getResources where the resource only exists in the
parent</em>
+<a class="jxr_linenumber" name="L285" href="#L285">285</a> resources =
childLoader.getResources(<span
class="jxr_string">"org/apache/commons/logging/Log.class"</span>);
+<a class="jxr_linenumber" name="L286" href="#L286">286</a> urls =
toURLArray(resources);
+<a class="jxr_linenumber" name="L287" href="#L287">287</a>
assertEquals(<span class="jxr_string">"Unexpected number of Log.class resources
found"</span>, 1, urls.length);
+<a class="jxr_linenumber" name="L288" href="#L288">288</a>
+<a class="jxr_linenumber" name="L289" href="#L289">289</a> <em
class="jxr_comment">// getResources where the resource only exists in the
child</em>
+<a class="jxr_linenumber" name="L290" href="#L290">290</a> resources =
childLoader.getResources(<span
class="jxr_string">"org/apache/commons/logging/PathableTestSuite.class"</span>);
+<a class="jxr_linenumber" name="L291" href="#L291">291</a> urls =
toURLArray(resources);
+<a class="jxr_linenumber" name="L292" href="#L292">292</a>
assertEquals(<span class="jxr_string">"Unexpected number of
PathableTestSuite.class resources found"</span>, 1, urls.length);
+<a class="jxr_linenumber" name="L293" href="#L293">293</a>
+<a class="jxr_linenumber" name="L294" href="#L294">294</a> <em
class="jxr_comment">// getResources where the resource exists in both.</em>
+<a class="jxr_linenumber" name="L295" href="#L295">295</a> <em
class="jxr_comment">// resources should be returned in order (child-resource,
parent-resource).</em>
+<a class="jxr_linenumber" name="L296" href="#L296">296</a> <em
class="jxr_comment">//</em>
+<a class="jxr_linenumber" name="L297" href="#L297">297</a> <em
class="jxr_comment">// IMPORTANT: due to the fact that in java 1.4 and earlier
method</em>
+<a class="jxr_linenumber" name="L298" href="#L298">298</a> <em
class="jxr_comment">// ClassLoader.getResources is final it isn't possible for
PathableClassLoader</em>
+<a class="jxr_linenumber" name="L299" href="#L299">299</a> <em
class="jxr_comment">// to override this. So even when child-first is enabled
the resource order</em>
+<a class="jxr_linenumber" name="L300" href="#L300">300</a> <em
class="jxr_comment">// is still (parent-resources, child-resources). This test
verifies the expected</em>
+<a class="jxr_linenumber" name="L301" href="#L301">301</a> <em
class="jxr_comment">// behavior - even though it's not the desired
behavior.</em>
+<a class="jxr_linenumber" name="L302" href="#L302">302</a>
+<a class="jxr_linenumber" name="L303" href="#L303">303</a> resources =
childLoader.getResources(<span
class="jxr_string">"org/apache/commons/logging/impl/Log4JLogger.class"</span>);
+<a class="jxr_linenumber" name="L304" href="#L304">304</a> urls =
toURLArray(resources);
+<a class="jxr_linenumber" name="L305" href="#L305">305</a>
assertEquals(<span class="jxr_string">"Unexpected number of Log4JLogger.class
resources found"</span>, 2, urls.length);
+<a class="jxr_linenumber" name="L306" href="#L306">306</a>
+<a class="jxr_linenumber" name="L307" href="#L307">307</a> <em
class="jxr_comment">// There is no guarantee about the ordering of results
returned from getResources</em>
+<a class="jxr_linenumber" name="L308" href="#L308">308</a> <em
class="jxr_comment">// To make this test portable across JVMs, sort the string
to give them a known order</em>
+<a class="jxr_linenumber" name="L309" href="#L309">309</a> <strong
class="jxr_keyword">final</strong> String[] urlsToStrings = <strong
class="jxr_keyword">new</strong> String[2];
+<a class="jxr_linenumber" name="L310" href="#L310">310</a>
urlsToStrings[0] = urls[0].toString();
+<a class="jxr_linenumber" name="L311" href="#L311">311</a>
urlsToStrings[1] = urls[1].toString();
+<a class="jxr_linenumber" name="L312" href="#L312">312</a>
Arrays.sort(urlsToStrings);
+<a class="jxr_linenumber" name="L313" href="#L313">313</a>
assertTrue(<span class="jxr_string">"Incorrect source for Log4JLogger
class"</span>,
+<a class="jxr_linenumber" name="L314" href="#L314">314</a>
urlsToStrings[0].indexOf(Artifacts.getAdaptersJarName()) > 0);
+<a class="jxr_linenumber" name="L315" href="#L315">315</a>
assertTrue(<span class="jxr_string">"Incorrect source for Log4JLogger
class"</span>,
+<a class="jxr_linenumber" name="L316" href="#L316">316</a>
urlsToStrings[1].indexOf(Artifacts.getMainJarName()) > 0);
+<a class="jxr_linenumber" name="L317" href="#L317">317</a> }
+<a class="jxr_linenumber" name="L318" href="#L318">318</a> }
</pre>
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