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<a href="http://community.jboss.org/index.jspa" style="text-decoration: none; color: #E1E1E1">Community</a></h1>
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JBoss Reflect Performance Javassist vs Introspection
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reply from <a href="http://community.jboss.org/people/flavia.rainone%40jboss.com">Flavia Rainone</a> in <i>JBoss Microcontainer Development</i> - <a href="http://community.jboss.org/message/538584#538584">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>The problem seems to be that in the bootstrap DefaultClassPoolFactory is used until it gets replaced by the real one. Flavia, is there a way to get the real ClassPoolFactory to kick in earlier?<div> </div></blockquote><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The correct classpool factory kicks in just allright in the JBoss AOP integration. What exactly is being performed before the correct ClassPool Factory is set up?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Taking a look at your implementation, I see that you created in jboss-kernel a ClassPoolFactoryImpl with support to installation and uninstallation of ClassLoaders. By doing this, as far as I can tell, you created a mechanism that is already present in the integration (take a look at the usage of RegisterModuleCallback in aop.xml).</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I mean, with things set up the way they are, I thought we had all that we needed to use JBoss Reflection over Javassist with the new pools:</p><p>- there is a part that is in aop.xml that concerns ClassPools. I thought of moving this stuff to a new separate file when we integrated JBoss Reflection + Javassist with MC (mainly RegisterModuleCallback stuff)</p><p>- in JBoss Reflection, there is a RepositoryClassPoolFactory class, which is the classpoolfactory intended for usage with jboss-classpool. You only need to set it as the classpoolfactory in JavassistTypeInfoFactory and set org.jboss.classpool.spi.ClassPoolRepository as the repository in RepositoryClassPoolFactory:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java">RepositoryClassPoolFactory cpFactory = <font color="navy"><b>new</b></font> RepositoryClassPoolFactory(ClassPoolRepository.getInstance());
JavassistTypeInfoFactory.setClassPoolFactory(cpFactory);
</code></pre><p>I thought this would also be configured in this xml file that would contain stuff extracted from aop.xml</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>So, why do you need ClassPoolFactoryImpl? If you need it for integration, maybe we should get rid of RepositoryClassPoolFactory and put it in its place instead, as RepositoryClassPoolFactory would become useless.</p></div>
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