| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.aries.jndi.legacy.support; |
| |
| import javax.naming.Context; |
| import javax.naming.NamingException; |
| import javax.naming.spi.InitialContextFactory; |
| import javax.naming.spi.InitialContextFactoryBuilder; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import java.util.Hashtable; |
| |
| /** |
| * Some OSGi based server runtimes, such as jetty OSGi and virgo rely on the thread context classloader |
| * to make their JNDI InitialContextFactory's available in OSGi, rather than relying on the OSGi JNDI spec. |
| * This is a little bizare, but perhaps is just a point in time statement. In any case to support them |
| * using Aries JNDI we have this ICFB which uses the Thread context classloader. We don't ship it in the |
| * jndi uber bundle because it is only for these runtimes which haven't caught up with the latest OSGi specs. |
| * Normally we want to enourage the use of the OSGi spec, but this is a backstop for those wanting to use |
| * Aries JNDI and one of these runtimes. |
| * |
| */ |
| public class LegacyInitialContextFinder implements InitialContextFactoryBuilder { |
| |
| public InitialContextFactory createInitialContextFactory( |
| Hashtable<?, ?> environment) throws NamingException { |
| String icf = (String) environment.get(Context.INITIAL_CONTEXT_FACTORY); |
| if (icf != null) { |
| ClassLoader cl; |
| if (System.getSecurityManager() != null) { |
| cl = AccessController.doPrivileged((PrivilegedAction<ClassLoader>) Thread.currentThread()::getContextClassLoader); |
| } else { |
| cl = Thread.currentThread().getContextClassLoader(); |
| } |
| |
| try { |
| Class<?> icfClass = Class.forName(icf, false, cl); |
| if (InitialContextFactory.class.isAssignableFrom(icfClass)) { |
| return (InitialContextFactory) icfClass.newInstance(); |
| } |
| } catch (ClassNotFoundException e) { |
| // If the ICF doesn't exist this is expected. Should return null so the next builder is queried. |
| } catch (InstantiationException e) { |
| // If the ICF couldn't be created just ignore and return null. |
| } catch (IllegalAccessException e) { |
| // If the default constructor is private, just ignore and return null. |
| } |
| } |
| |
| return null; |
| } |
| |
| } |