lonb - 2010-06-23

Apache OFBiz uses an embedded Tomcat engine to serve pages and uses dynamic classloading across components.  None of the built-in filters worked, so with a bit of futzing around, this one got the job done (I put it in the mentorgen package, for easy of deployment):

package com.mentorgen.tools.profile.instrument.clfilter;
 * A filter that accepts classes that are loaded by Tomcat's 
 * web app class loader (this has only been tested with Tomcat 5.5.x)
 * @author <a href="lbinder@folica.com">Lon F. Binder</a>
 * @see com.mentorgen.tools.profile.instrument.clfilter.ClassLoaderFilter
public class OFBizClassLoaderFilter implements ClassLoaderFilter {
    private static final String CLASSLOADER_TOMCAT = "org.apache.catalina.loader.WebappClassLoader";
    private static final String CLASSLOADER_URLBASED = "java.net.URLClassLoader";
    public boolean canFilter() {
        return true;

    public boolean accept(ClassLoader loader) {
        String loaderName = loader.getClass().getName();
        return CLASSLOADER_TOMCAT.equals(loaderName) || CLASSLOADER_URLBASED.equals(loaderName);

} // Everyone likes the end of class