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Issues using Javassist TypeInfoFactory in other projects
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reply from <a href="http://community.jboss.org/people/kabir.khan%40jboss.com">Kabir Khan</a> in <i>JBoss Microcontainer Development</i> - <a href="http://community.jboss.org/message/534708#534708">View the full discussion</a>
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<div class="jive-rendered-content"><blockquote class="jive-quote"><p>Kabir Khan wrote:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Another issue is that dynamically created classes are not found in the classpools.</p></blockquote><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Rather than all the fancy BytecodeRecorder stuff, I am simply delegating to the IntrospectionTypeInfoFactory if the class can not be found in the classpool:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java">[kabir ~/sourcecontrol/jboss-reflect/trunk/jboss-reflect]
$svn diff
Index: src/main/java/org/jboss/reflect/plugins/javassist/JavassistTypeInfoFactoryImpl.java
===================================================================
--- src/main/java/org/jboss/reflect/plugins/javassist/JavassistTypeInfoFactoryImpl.java     (revision 103127)
+++ src/main/java/org/jboss/reflect/plugins/javassist/JavassistTypeInfoFactoryImpl.java     (working copy)
@@ -49,6 +49,7 @@
<font color="navy"><b>import</b></font> org.jboss.reflect.plugins.AnnotationValueImpl;
<font color="navy"><b>import</b></font> org.jboss.reflect.plugins.EnumConstantInfoImpl;
<font color="navy"><b>import</b></font> org.jboss.reflect.plugins.GenericsUtil;
+<font color="navy"><b>import</b></font> org.jboss.reflect.plugins.introspection.IntrospectionTypeInfoFactory;
<font color="navy"><b>import</b></font> org.jboss.reflect.plugins.javassist.classpool.ClassPoolFactory;
<font color="navy"><b>import</b></font> org.jboss.reflect.plugins.javassist.classpool.DefaultClassPoolFactory;
<font color="navy"><b>import</b></font> org.jboss.reflect.spi.AnnotationInfo;
@@ -284,11 +285,33 @@
       <font color="navy">}</font>
       <font color="navy"><b>catch</b></font>(NotFoundException nfe)
       <font color="navy">{</font>
-         <font color="navy"><b>throw</b></font> <font color="navy"><b>new</b></font> ClassNotFoundException(nfe.getMessage());
+         <font color="navy"><b>return</b></font> delegateToIntrospectionImplementation(cl, name);
       <font color="navy">}</font>
    <font color="navy">}</font>
   
    <font color="darkgreen">/**
+    * Proxies, whether
+    * <ul>
+    * <li>JDK dynamic proxies</li>
+    * <li>javassist ProxyFactory proxies - created by calling ClassLoader.defineClass()</li>
+    * </ul>
+    * are not visible to the javassist classpools, and neither will classes generated by cglib or other
+    * frameworks, so try to load up the class from the reflect implementation.
+    *
+    * @param cl the classloader
+    * @param name the name of the class
+    * @return the info
+    * @throws ClassNotFoundException when the class cannot be found
+    */</font>
+   <font color="navy"><b>private</b></font> TypeInfo delegateToIntrospectionImplementation(ClassLoader cl, String name) <font color="navy"><b>throws</b></font> ClassNotFoundException
+   <font color="navy">{</font>
+      <font color="darkgreen">//Check the class has been loaded</font>
+      cl.loadClass(name);
+      IntrospectionTypeInfoFactory factory = <font color="navy"><b>new</b></font> IntrospectionTypeInfoFactory();
+      <font color="navy"><b>return</b></font> factory.getTypeInfo(name, cl);
+   <font color="navy">}</font>
+  
+   <font color="darkgreen">/**
</font></code></pre><div id="_mcePaste"> </div><div> </div><div> </div></div>
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<p style="margin: 0;">Reply to this message by <a href="http://community.jboss.org/message/534708#534708">going to Community</a></p>
<p style="margin: 0;">Start a new discussion in JBoss Microcontainer Development at <a href="http://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2115">Community</a></p>
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