121 lines
4.5 KiB
Java
121 lines
4.5 KiB
Java
/*
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* Copyright (c) 2000, 2008, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package javax.management.loading;
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import static com.sun.jmx.defaults.JmxProperties.MBEANSERVER_LOGGER;
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import java.util.Iterator;
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import java.util.List;
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import java.util.logging.Level;
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import javax.management.MBeanServer;
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import javax.management.MBeanServerFactory;
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/**
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* <p>Keeps the list of Class Loaders registered in the MBean Server.
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* It provides the necessary methods to load classes using the registered
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* Class Loaders.</p>
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*
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* <p>This deprecated class is maintained for compatibility. In
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* previous versions of JMX, there was one
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* <code>DefaultLoaderRepository</code> shared by all MBean servers.
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* As of JMX 1.2, that functionality is approximated by using {@link
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* MBeanServerFactory#findMBeanServer} to find all known MBean
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* servers, and consulting the {@link ClassLoaderRepository} of each
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* one. It is strongly recommended that code referencing
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* <code>DefaultLoaderRepository</code> be rewritten.</p>
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*
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* @deprecated Use
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* {@link javax.management.MBeanServer#getClassLoaderRepository()}}
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* instead.
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*
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* @since 1.5
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*/
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@Deprecated
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public class DefaultLoaderRepository {
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/**
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* Go through the list of class loaders and try to load the requested
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* class.
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* The method will stop as soon as the class is found. If the class
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* is not found the method will throw a <CODE>ClassNotFoundException</CODE>
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* exception.
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*
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* @param className The name of the class to be loaded.
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*
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* @return the loaded class.
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*
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* @exception ClassNotFoundException The specified class could not be
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* found.
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*/
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public static Class<?> loadClass(String className)
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throws ClassNotFoundException {
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MBEANSERVER_LOGGER.logp(Level.FINEST,
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DefaultLoaderRepository.class.getName(),
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"loadClass", className);
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return load(null, className);
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}
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/**
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* Go through the list of class loaders but exclude the given
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* class loader, then try to load
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* the requested class.
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* The method will stop as soon as the class is found. If the class
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* is not found the method will throw a <CODE>ClassNotFoundException</CODE>
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* exception.
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*
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* @param className The name of the class to be loaded.
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* @param loader The class loader to be excluded.
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*
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* @return the loaded class.
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*
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* @exception ClassNotFoundException The specified class could not be
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* found.
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*/
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public static Class<?> loadClassWithout(ClassLoader loader,
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String className)
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throws ClassNotFoundException {
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MBEANSERVER_LOGGER.logp(Level.FINEST,
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DefaultLoaderRepository.class.getName(),
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"loadClassWithout", className);
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return load(loader, className);
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}
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private static Class<?> load(ClassLoader without, String className)
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throws ClassNotFoundException {
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final List<MBeanServer> mbsList = MBeanServerFactory.findMBeanServer(null);
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for (MBeanServer mbs : mbsList) {
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ClassLoaderRepository clr = mbs.getClassLoaderRepository();
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try {
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return clr.loadClassWithout(without, className);
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} catch (ClassNotFoundException e) {
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// OK : Try with next one...
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}
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}
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throw new ClassNotFoundException(className);
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}
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}
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