| /* |
| * Copyright 1999,2004 The Apache Software Foundation. |
| * |
| * Licensed 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.naming; |
| |
| import java.util.Hashtable; |
| import javax.naming.NamingException; |
| import javax.naming.Context; |
| |
| /** |
| * Handles the associations : |
| * <ul> |
| * <li>Catalina context name with the NamingContext</li> |
| * <li>Calling thread with the NamingContext</li> |
| * </ul> |
| * |
| * @author Remy Maucherat |
| * @version $Revision$ $Date$ |
| */ |
| |
| public class ContextBindings { |
| |
| |
| // -------------------------------------------------------------- Variables |
| |
| |
| /** |
| * Bindings name - naming context. Keyed by name. |
| */ |
| private static Hashtable contextNameBindings = new Hashtable(); |
| |
| |
| /** |
| * Bindings thread - naming context. Keyed by thread id. |
| */ |
| private static Hashtable threadBindings = new Hashtable(); |
| |
| |
| /** |
| * Bindings thread - name. Keyed by thread id. |
| */ |
| private static Hashtable threadNameBindings = new Hashtable(); |
| |
| |
| /** |
| * Bindings class loader - naming context. Keyed by CL id. |
| */ |
| private static Hashtable clBindings = new Hashtable(); |
| |
| |
| /** |
| * Bindings class loader - name. Keyed by CL id. |
| */ |
| private static Hashtable clNameBindings = new Hashtable(); |
| |
| |
| /** |
| * The string manager for this package. |
| */ |
| protected static StringManager sm = |
| StringManager.getManager(Constants.Package); |
| |
| |
| // --------------------------------------------------------- Public Methods |
| |
| |
| /** |
| * Binds a context name. |
| * |
| * @param name Name of the context |
| * @param context Associated naming context instance |
| */ |
| public static void bindContext(Object name, Context context) { |
| bindContext(name, context, null); |
| } |
| |
| |
| /** |
| * Binds a context name. |
| * |
| * @param name Name of the context |
| * @param context Associated naming context instance |
| * @param token Security token |
| */ |
| public static void bindContext(Object name, Context context, |
| Object token) { |
| if (ContextAccessController.checkSecurityToken(name, token)) |
| contextNameBindings.put(name, context); |
| } |
| |
| |
| /** |
| * Unbind context name. |
| * |
| * @param name Name of the context |
| */ |
| public static void unbindContext(Object name) { |
| unbindContext(name, null); |
| } |
| |
| |
| /** |
| * Unbind context name. |
| * |
| * @param name Name of the context |
| * @param token Security token |
| */ |
| public static void unbindContext(Object name, Object token) { |
| if (ContextAccessController.checkSecurityToken(name, token)) |
| contextNameBindings.remove(name); |
| } |
| |
| |
| /** |
| * Retrieve a naming context. |
| * |
| * @param name Name of the context |
| */ |
| static Context getContext(Object name) { |
| return (Context) contextNameBindings.get(name); |
| } |
| |
| |
| /** |
| * Binds a naming context to a thread. |
| * |
| * @param name Name of the context |
| */ |
| public static void bindThread(Object name) |
| throws NamingException { |
| bindThread(name, null); |
| } |
| |
| |
| /** |
| * Binds a naming context to a thread. |
| * |
| * @param name Name of the context |
| * @param token Security token |
| */ |
| public static void bindThread(Object name, Object token) |
| throws NamingException { |
| if (ContextAccessController.checkSecurityToken(name, token)) { |
| Context context = (Context) contextNameBindings.get(name); |
| if (context == null) |
| throw new NamingException |
| (sm.getString("contextBindings.unknownContext", name)); |
| threadBindings.put(Thread.currentThread(), context); |
| threadNameBindings.put(Thread.currentThread(), name); |
| } |
| } |
| |
| |
| /** |
| * Unbinds a naming context to a thread. |
| * |
| * @param name Name of the context |
| */ |
| public static void unbindThread(Object name) { |
| unbindThread(name, null); |
| } |
| |
| |
| /** |
| * Unbinds a naming context to a thread. |
| * |
| * @param name Name of the context |
| * @param token Security token |
| */ |
| public static void unbindThread(Object name, Object token) { |
| if (ContextAccessController.checkSecurityToken(name, token)) { |
| threadBindings.remove(Thread.currentThread()); |
| threadNameBindings.remove(Thread.currentThread()); |
| } |
| } |
| |
| |
| /** |
| * Retrieves the naming context bound to a thread. |
| */ |
| public static Context getThread() |
| throws NamingException { |
| Context context = |
| (Context) threadBindings.get(Thread.currentThread()); |
| if (context == null) |
| throw new NamingException |
| (sm.getString("contextBindings.noContextBoundToThread")); |
| return context; |
| } |
| |
| |
| /** |
| * Retrieves the naming context name bound to a thread. |
| */ |
| static Object getThreadName() |
| throws NamingException { |
| Object name = threadNameBindings.get(Thread.currentThread()); |
| if (name == null) |
| throw new NamingException |
| (sm.getString("contextBindings.noContextBoundToThread")); |
| return name; |
| } |
| |
| |
| /** |
| * Tests if current thread is bound to a context. |
| */ |
| public static boolean isThreadBound() { |
| return (threadBindings.containsKey(Thread.currentThread())); |
| } |
| |
| |
| /** |
| * Binds a naming context to a class loader. |
| * |
| * @param name Name of the context |
| */ |
| public static void bindClassLoader(Object name) |
| throws NamingException { |
| bindClassLoader(name, null); |
| } |
| |
| |
| /** |
| * Binds a naming context to a thread. |
| * |
| * @param name Name of the context |
| * @param token Security token |
| */ |
| public static void bindClassLoader(Object name, Object token) |
| throws NamingException { |
| bindClassLoader |
| (name, token, Thread.currentThread().getContextClassLoader()); |
| } |
| |
| |
| /** |
| * Binds a naming context to a thread. |
| * |
| * @param name Name of the context |
| * @param token Security token |
| */ |
| public static void bindClassLoader(Object name, Object token, |
| ClassLoader classLoader) |
| throws NamingException { |
| if (ContextAccessController.checkSecurityToken(name, token)) { |
| Context context = (Context) contextNameBindings.get(name); |
| if (context == null) |
| throw new NamingException |
| (sm.getString("contextBindings.unknownContext", name)); |
| clBindings.put(classLoader, context); |
| clNameBindings.put(classLoader, name); |
| } |
| } |
| |
| |
| /** |
| * Unbinds a naming context to a class loader. |
| * |
| * @param name Name of the context |
| */ |
| public static void unbindClassLoader(Object name) { |
| unbindClassLoader(name, null); |
| } |
| |
| |
| /** |
| * Unbinds a naming context to a class loader. |
| * |
| * @param name Name of the context |
| * @param token Security token |
| */ |
| public static void unbindClassLoader(Object name, Object token) { |
| unbindClassLoader(name, token, |
| Thread.currentThread().getContextClassLoader()); |
| } |
| |
| |
| /** |
| * Unbinds a naming context to a class loader. |
| * |
| * @param name Name of the context |
| * @param token Security token |
| */ |
| public static void unbindClassLoader(Object name, Object token, |
| ClassLoader classLoader) { |
| if (ContextAccessController.checkSecurityToken(name, token)) { |
| Object n = clNameBindings.get(classLoader); |
| if ((n==null) || !(n.equals(name))) { |
| return; |
| } |
| clBindings.remove(classLoader); |
| clNameBindings.remove(classLoader); |
| } |
| } |
| |
| |
| /** |
| * Retrieves the naming context bound to a class loader. |
| */ |
| public static Context getClassLoader() |
| throws NamingException { |
| ClassLoader cl = Thread.currentThread().getContextClassLoader(); |
| Context context = null; |
| do { |
| context = (Context) clBindings.get(cl); |
| if (context != null) { |
| return context; |
| } |
| } while ((cl = cl.getParent()) != null); |
| throw new NamingException |
| (sm.getString("contextBindings.noContextBoundToCL")); |
| } |
| |
| |
| /** |
| * Retrieves the naming context name bound to a class loader. |
| */ |
| static Object getClassLoaderName() |
| throws NamingException { |
| ClassLoader cl = Thread.currentThread().getContextClassLoader(); |
| Object name = null; |
| do { |
| name = clNameBindings.get(cl); |
| if (name != null) { |
| return name; |
| } |
| } while ((cl = cl.getParent()) != null); |
| throw new NamingException |
| (sm.getString("contextBindings.noContextBoundToCL")); |
| } |
| |
| |
| /** |
| * Tests if current class loader is bound to a context. |
| */ |
| public static boolean isClassLoaderBound() { |
| ClassLoader cl = Thread.currentThread().getContextClassLoader(); |
| do { |
| if (clBindings.containsKey(cl)) { |
| return true; |
| } |
| } while ((cl = cl.getParent()) != null); |
| return false; |
| } |
| |
| |
| } |