org.jboss.mx.loading: public class: HeirarchicalLoaderRepository2

org.jboss.mx.loading
public class: HeirarchicalLoaderRepository2 [javadoc | source]

java.lang.Object
   org.jboss.mx.loading.LoaderRepository
      org.jboss.mx.loading.UnifiedLoaderRepository2
         org.jboss.mx.loading.HeirarchicalLoaderRepository2

All Implemented Interfaces:
UnifiedLoaderRepository2MBean, NotificationBroadcaster, ServerConstants, ClassLoaderRepository

A simple extension of UnifiedLoaderRepository2 that adds the notion of a parent UnifiedLoaderRepository. Classes and resources are loaded from child first and then the parent.

author: < - a href="mailto:scott.stark@jboss.org">Scott Stark.

version: $ - Revision: 1.2.4.2 $

Fields inherited from org.jboss.mx.loading.UnifiedLoaderRepository2:
repositoryLock

Fields inherited from org.jboss.mx.loading.LoaderRepository:
loaders, instance, translator

Constructor:
public HeirarchicalLoaderRepository2(MBeanServer server) throws InstanceNotFoundException, ReflectionException, AttributeNotFoundException, MBeanException { this(server, DEFAULT_LOADER_NAME); }
public HeirarchicalLoaderRepository2(MBeanServer server, ObjectName parentName) throws InstanceNotFoundException, ReflectionException, AttributeNotFoundException, MBeanException { this.parentRepository = (LoaderRepository) server.getAttribute(parentName, "Instance"); }

Constructor:

 public HeirarchicalLoaderRepository2(MBeanServer server) throws InstanceNotFoundException, ReflectionException, AttributeNotFoundException, MBeanException {
      this(server, DEFAULT_LOADER_NAME);
}

 public HeirarchicalLoaderRepository2(MBeanServer server,
    ObjectName parentName) throws InstanceNotFoundException, ReflectionException, AttributeNotFoundException, MBeanException {
      this.parentRepository = (LoaderRepository) server.getAttribute(parentName,
                    "Instance");
}

Method from org.jboss.mx.loading.HeirarchicalLoaderRepository2 Summary:
getResource, getURLs, loadClass

Methods from org.jboss.mx.loading.UnifiedLoaderRepository2:
acquire, addClassLoader, addClassLoaderURL, addNotificationListener, attempt, findClass, getInstance, getNotificationInfo, getResource, getResources, getURLs, loadClass, loadClass, loadClassWithout, newClassLoader, newClassLoader, registerClassLoader, release, removeClassLoader, removeNotificationListener

Methods from org.jboss.mx.loading.LoaderRepository:
addClassLoader, addClassLoaderURL, cacheLoadedClass, clear, compare, getCachedClass, getLoaders, getNativeClassForName, getResource, getResources, getTranslator, getURLs, loadClass, loadClass, loadClassBefore, loadClassWithout, newClassLoader, newClassLoader, removeClassLoader, reverseCompare, setTranslator

Methods from java.lang.Object:
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from org.jboss.mx.loading.HeirarchicalLoaderRepository2 Detail:
public URL getResource(String name, ClassLoader scl) { URL resource = null; // Try this repository resource = super.getResource(name, scl); // Next try our parent repository if( resource == null ) resource = parentRepository.getResource(name, scl); return resource; } Find a resource from this repository.
public URL[] getURLs() { URL[] ourURLs = super.getURLs(); URL[] parentURLs = parentRepository.getURLs(); int size = ourURLs.length + parentURLs.length; URL[] urls = new URL[size]; System.arraycopy(ourURLs, 0, urls, 0, ourURLs.length); System.arraycopy(parentURLs, 0, urls, ourURLs.length, parentURLs.length); return urls; } Obtain a listing of the URL for all UnifiedClassLoaders associated with the ServiceLibraries
public Class loadClass(String name, boolean resolve, ClassLoader scl) throws ClassNotFoundException { Class foundClass = null; // Try this repository try { foundClass = super.loadClass(name, resolve, scl); } catch(ClassNotFoundException e) { // Next try our parent repository if( foundClass == null ) foundClass = parentRepository.loadClass(name, resolve, scl); } if( foundClass != null ) return foundClass; // If we reach here, all of the classloaders currently in the VM don't know about the class throw new ClassNotFoundException(name); } Add a class to this repository. Allows a class to be added in byte code form stored inside this repository.

Method from org.jboss.mx.loading.HeirarchicalLoaderRepository2 Detail:

 public URL getResource(String name,
    ClassLoader scl) {
      URL resource = null;
      // Try this repository
      resource = super.getResource(name, scl);
      // Next try our parent repository
      if( resource == null )
         resource = parentRepository.getResource(name, scl);
      return resource;
}

Find a resource from this repository.

 public URL[] getURLs() {
      URL[] ourURLs = super.getURLs();
      URL[] parentURLs = parentRepository.getURLs();
      int size = ourURLs.length + parentURLs.length;
      URL[] urls = new URL[size];
      System.arraycopy(ourURLs, 0, urls, 0, ourURLs.length);
      System.arraycopy(parentURLs, 0, urls, ourURLs.length, parentURLs.length);
      return urls;
}

Obtain a listing of the URL for all UnifiedClassLoaders associated with the ServiceLibraries

 public Class loadClass(String name,
    boolean resolve,
    ClassLoader scl) throws ClassNotFoundException {
      Class foundClass = null;
      // Try this repository
      try
      {
         foundClass = super.loadClass(name, resolve, scl);
      }
      catch(ClassNotFoundException e)
      {
         // Next try our parent repository
         if( foundClass == null )
            foundClass = parentRepository.loadClass(name, resolve, scl);
      }
      if( foundClass != null )
         return foundClass;
      // If we reach here, all of the classloaders currently in the VM don't know about the class
      throw new ClassNotFoundException(name);
}

Add a class to this repository. Allows a class to be added in byte code form stored inside this repository.