Hi alesj, Thanks for your response, which was helpul to me. I finally handled this case in a satisfactory way. So, when I add/remove/modify a file under my hierarchy, i get a log that says "this file have been added, removed, modified" under the TRACE log level. A the same time I log, I fire an EngineDeployment event to alert registered listeners that an event has happened. Unfortunately, that doesn't work... I give you my deployment file : | <bean name="ClassLoaderManager" class="com.mycompany.classloaders.MasterClassLoader"> | <constructor factoryMethod="getInstance"/> | </bean> | | <bean name="Scanner" class="com.mycompany.deployers.scanner.Scanner"> | <install method="addListener"> | <parameter> | <inject bean="ClassLoaderManager"/> | </parameter> | </install> | <constructor> | <parameter>/home/user/test/</parameter> | </constructor> | </bean> | With this xml portion, I want to add my ClassLoaderManager as a listener (simple addition to a CopyOnWriteArrayList in Scanner) But it isn't registered... I see an error in the deployment of ClassLoaderManager at startup that is | 12:52:17,886 ERROR [AbstractKernelController] Error installing to Instantiated: name=ClassLoaderManager state=Described | org.jboss.joinpoint.spi.JoinpointException: Constructor not found com.mycompany.classloaders.MasterClassLoader[] in [ReflectConstructorInfoImpl@1b66b06{[ReflectClassInfoImpl(a)12c9557{name=java.lang.ClassLoader}]}, ReflectConstructorInfoImpl@9f0d{[ReflectClassInfoImpl(a)12c9557{name=java.lang.ClassLoader}, ReflectClassInfoImpl(a)ca3783{name=com.mycompany.classloaders.MasterClassLoader$1}]}] | at org.jboss.joinpoint.plugins.Config.findConstructorInfo(Config.java:274) | at org.jboss.kernel.plugins.config.Configurator.resolveConstructor(Configurator.java:289) | at org.jboss.kernel.plugins.config.Configurator.findConstructor(Configurator.java:255) | at org.jboss.kernel.plugins.config.Configurator.getConstructorJoinPoint(Configurator.java:198) | at org.jboss.kernel.plugins.config.AbstractKernelConfigurator.getConstructorJoinPoint(AbstractKernelConfigurator.java:137) | at org.jboss.kernel.plugins.dependency.InstantiateAction.installActionInternal(InstantiateAction.java:61) | at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:54) | at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:42) | at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62) | at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71) | at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51) | at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348) | at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1598) | at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934) | at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1062) | at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984) | at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:774) | at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:540) | at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.deployBean(AbstractKernelDeployer.java:331) | at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.deployBeans(AbstractKernelDeployer.java:309) | at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.deploy(AbstractKernelDeployer.java:130) | at org.jboss.kernel.plugins.deployment.BasicKernelDeployer.deploy(BasicKernelDeployer.java:76) | at org.jboss.kernel.plugins.deployment.xml.BasicXMLDeployer.deploy(BasicXMLDeployer.java:88) | at org.jboss.kernel.plugins.deployment.xml.BasicXMLDeployer.deploy(BasicXMLDeployer.java:158) | | Here is the relevant part of the code for my MasterClassLoader class : | public class MasterClassLoader extends ClassLoader implements EngineDeploymentListener{ | | /** | * Application Logger | */ | private static final Logger log = Logger.getLogger(MasterClassLoader.class); | | private Map<File, EngineClassLoader> engineClassLoaders = new HashMap<File, EngineClassLoader>(); | | private MasterClassLoader(ClassLoader parent) { | super(parent); | } | | @Override | public void onDeploymentEvent(EngineDeploymentEvent e) { | log.info("[********] Deployment Event : " + e.getType().toString()); | } | | /** | * Static initializer to ensure Singleton | * @return single instance of MasterClassLoader | */ | public static MasterClassLoader getInstance() { | return MasterClassLoaderHolder.instance; | } | | private static class MasterClassLoaderHolder { | | public static MasterClassLoader instance = new MasterClassLoader(ClassLoader.getSystemClassLoader()); | } | } | | Why do you think my MasterClassLoader is not deployed ? My static factory method run well in standard call... Thanks in advance dazz_x View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4191701#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...