javax.management

Class DefaultLoaderRepository


public class DefaultLoaderRepository
extends Object

Maintains a list of the ClassLoader instances registered with the management servers, allowing it to be used to load classes. In early versions of the JMX API, this class represented a shared repository for the classloaders of all management servers. The management of classloaders is now decentralised and this class is deprecated. The old behaviour is emulated by consulting the MBeanServer.getClassLoaderRepository() method of all the servers obtained from MBeanServerFactory.findMBeanServer(String). Use of this class should be avoided in new code.
Since:
1.5

Method Summary

static Class<T>
loadClass(String name)
Attempts to load the given class using class loaders supplied by the repository of each MBeanServer.
static Class<T>
loadClassWithout(ClassLoader exclude, String name)
Attempts to load the given class using class loaders supplied by the repository of each MBeanServer.

Methods inherited from class java.lang.Object

clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

loadClass

public static Class<T> loadClass(String name)
            throws ClassNotFoundException
Attempts to load the given class using class loaders supplied by the repository of each MBeanServer. The ClassLoader.loadClass(String) method of each class loader is called. If the method returns successfully, then the returned Class instance is returned. If a ClassNotFoundException is thrown, then the next loader is tried. Any other exception thrown by the method is passed back to the caller. This method throws a ClassNotFoundException itself if all the class loaders listed prove fruitless.
Parameters:
name - the name of the class to load.
Returns:
the loaded class.
Throws:
ClassNotFoundException - if all the class loaders fail to load the class.

loadClassWithout

public static Class<T> loadClassWithout(ClassLoader exclude,
                                     String name)
            throws ClassNotFoundException
Attempts to load the given class using class loaders supplied by the repository of each MBeanServer. The ClassLoader.loadClass(String) method of each class loader is called. If the method returns successfully, then the returned Class instance is returned. If a ClassNotFoundException is thrown, then the next loader is tried. Any other exception thrown by the method is passed back to the caller. This method throws a ClassNotFoundException itself if all the class loaders listed prove fruitless.

Note that this method may deadlock if called simultaneously by two class loaders in the list. loadClassBefore(ClassLoader, String) should be used in preference to this method to avoid this.

Parameters:
exclude - the class loader to exclude, or null to obtain the same behaviour as loadClass(String).
name - the name of the class to load.
Returns:
the loaded class.
Throws:
ClassNotFoundException - if all the class loaders fail to load the class.

DefaultLoaderRepository.java -- Manages class loaders for the servers. Copyright (C) 2007 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.