BasicLoaderRepository (JBoss/JMX API) - JBoss 4.0.1 sp1 jmx API Documentation 英文版文档

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org.jboss.mx.loading
Class BasicLoaderRepository

java.lang.Object
  org.jboss.mx.loading.LoaderRepository
      org.jboss.mx.loading.BasicLoaderRepository

All Implemented Interfaces:: ClassLoaderRepository, ServerConstants

public class BasicLoaderRepository
extends LoaderRepository

Implements a simple classloader repository for the MBean server. The basic loader repository uses an unordered list of classloaders to try and load the required class. There is no attempt made to resolve conflicts between classes loaded by different classloaders.

A thread's context class loader is always searched first. Context class loader is not required to be registered to the repository.

Version:: $Revision: 1.15 $
Author:: Juha Lindfors.
See Also:: LoaderRepository

Field Summary

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

instance, loaders, translator

Fields inherited from interface org.jboss.mx.server.ServerConstants

CLASS_REMOVED, CLASSLOADER, CLASSLOADER_ADDED, CLASSLOADER_REMOVED, DEFAULT_DOMAIN, DEFAULT_LOADER_NAME, DEFAULT_LOADER_REPOSITORY_CLASS, DEFAULT_MBEAN_REGISTRY_CLASS, DEFAULT_MBEAN_SERVER_BUILDER_CLASS, DEFAULT_REQUIRED_MODELMBEAN_CLASS, DEFAULT_SCOPED_REPOSITORY_CLASS, DEFAULT_SCOPED_REPOSITORY_PARSER_CLASS, IMPLEMENTATION_NAME, IMPLEMENTATION_VENDOR, IMPLEMENTATION_VERSION, JMI_DOMAIN, LOADER_REPOSITORY_CLASS_PROPERTY, MBEAN_REGISTRY, MBEAN_REGISTRY_CLASS_PROPERTY, MBEAN_SERVER_BUILDER_CLASS_PROPERTY, MBEAN_SERVER_CONFIGURATION, MBEAN_SERVER_DELEGATE, OPTIMIZE_REFLECTED_DISPATCHER, REQUIRED_MODELMBEAN_CLASS_PROPERTY, SPECIFICATION_NAME, SPECIFICATION_VENDOR, SPECIFICATION_VERSION, UNIFIED_LOADER_REPOSITORY_CLASS

Constructor Summary

BasicLoaderRepository()


Method Summary

void addClassLoader(ClassLoader cl)
          Add a class loader to the repository

boolean addClassLoaderURL(ClassLoader cl, URL url)
          Update the set of URLs known to be associated with a previously added class loader.

URL getResource(String name, ClassLoader cl)
          Find a resource URL for the given name

void getResources(String name, ClassLoader cl, List urls)
          Find all resource URLs for the given name.

Class loadClass(String className)
          Loads a class from the repository.

Class loadClass(String name, boolean resolve, ClassLoader cl)
          Load the given class from the repository

Class loadClassBefore(ClassLoader stop, String className)
          Loads a class from the repository, using the classloaders that were registered before the given classloader.

Class loadClassWithout(ClassLoader skipLoader, String className)
          Loads a class from the repository, excluding the given classloader.

RepositoryClassLoader newClassLoader(URL url, boolean addToRepository)
          Create RepositoryClassLoader and optionally add it to the repository

RepositoryClassLoader newClassLoader(URL url, URL origURL, boolean addToRepository)
          Create RepositoryClassLoader and optionally add it to the repository

void removeClassLoader(ClassLoader cl)
          Remove a cladd loader from the repository.

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

compare, getCachedClass, getLoaders, getNativeClassForName, getTranslator, getURLs, reverseCompare, setTranslator

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BasicLoaderRepository

public BasicLoaderRepository()

Method Detail

loadClass

public Class loadClass(String className)
                throws ClassNotFoundException

Loads a class from the repository. This method attempts to load the class using all the classloader registered to the repository.

Specified by:: loadClass in interface ClassLoaderRepository
Specified by:: loadClass in class LoaderRepository

Parameters:: className - the class to load
Returns:: the found class
Throws:: ClassNotFoundException - when there is no such class

loadClassWithout

public Class loadClassWithout(ClassLoader skipLoader,
                              String className)
                       throws ClassNotFoundException

Loads a class from the repository, excluding the given classloader.

Specified by:: loadClassWithout in interface ClassLoaderRepository
Specified by:: loadClassWithout in class LoaderRepository

Parameters:: skipLoader - the classloader to exclude; className - the class to load
Returns:: the found class
Throws:: ClassNotFoundException - when there is no such class

loadClassBefore

public Class loadClassBefore(ClassLoader stop,
                             String className)
                      throws ClassNotFoundException

Loads a class from the repository, using the classloaders that were registered before the given classloader.

Specified by:: loadClassBefore in interface ClassLoaderRepository
Specified by:: loadClassBefore in class LoaderRepository

Parameters:: stop - consult all the classloaders registered before this one in an attempt to load a class; className - name of the class to load
Returns:: loaded class instance
Throws:: ClassNotFoundException - if none of the consulted classloaders were able to load the requested class