UnifiedClassLoader2 (JBoss/JMX API) - JBoss 3.2.7 jmx API Documentation 英文版文档

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org.jboss.mx.loading
Class UnifiedClassLoader2

java.lang.Object
  java.lang.ClassLoader
      java.security.SecureClassLoader
          java.net.URLClassLoader
              org.jboss.mx.loading.UnifiedClassLoader
                  org.jboss.mx.loading.UnifiedClassLoader2

All Implemented Interfaces:: org.jboss.util.loading.Translatable, UnifiedClassLoader2MBean, UnifiedClassLoaderMBean

public class UnifiedClassLoader2
extends UnifiedClassLoader
implements UnifiedClassLoader2MBean

An extension of UnifiedClassLoader that only allows a single thread into its UnifiedLoaderRepository2 by seperating the threads attempting class loading through it and the single thread active in the UnifiedLoaderRepository2 by registering a delegate UnifiedClassLoader with the UnifiedLoaderRepository2 rather than itself. Thus it does not matter how locked up this instance may be by the VM since the calling thread has to acquire a singleton lock to get into the UnifiedLoaderRepository2, and once in, that thread can never interact with any UnifiedClassLoader2, including the instance originating the class loading since only the delegate UnifiedClassLoader instances are registered with the repository.

Version:: $Revision: 1.3.4.3 $
Author:: Scott Stark

Field Summary

Fields inherited from class org.jboss.mx.loading.UnifiedClassLoader

origURL, repository, unregisterTrace, url

Constructor Summary

UnifiedClassLoader2(URL url)
          Construct a UnifiedClassLoader without registering it to the classloader repository.

UnifiedClassLoader2(URL url, URL origURL)
          Construct a UnifiedClassLoader without registering it to the classloader repository.

UnifiedClassLoader2(URL url, URL origURL, LoaderRepository repository)
          Construct a UnifiedClassLoader and registers it to the given repository.

Method Summary

URL[] getClasspath()
          This method simply invokes the super.getURLs() method to access the list of URLs that make up the UnifiedClassLoader classpath.

UnifiedClassLoader getDelegate()


URL getOrigURL()
          Get the original URL associated with the UCL.

URL getResource(String name)
          Attempts to load the resource from its URL and if not found forwards to the request to LoaderRepository.

URL getURL()
          Get the URL associated with the UCL.

Class loadClass(String name, boolean resolve)
          We intercept the load class to know exactly the dependencies of the underlying jar.

void unregister()


Methods inherited from class org.jboss.mx.loading.UnifiedClassLoader

addURL, clearBlacklists, definePackage, equals, findClass, findResources, findResourcesLocally, getAddedOrder, getAllURLs, getLoaderRepository, getObjectName, getPackage, getPackages, getPermissions, getProtectionDomain, getProtectionDomain, getResourceLocally, getURLs, hashCode, loadByteCode, loadClassLocally, setAddedOrder, setRepository, toString

Methods inherited from class java.net.URLClassLoader

definePackage, findResource, newInstance, newInstance

Methods inherited from class java.security.SecureClassLoader

defineClass

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, definePackage, findLibrary, findLoadedClass, findSystemClass, getParent, getResourceAsStream, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail