All Downloads are FREE. Search and download functionalities are using the official Maven repository.

org.apache.naming.java.javaURLContextFactory Maven / Gradle / Ivy

There is a newer version: 11.0.0-M26
Show newest version
/*
 * 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.naming.java;

import java.util.Hashtable;

import javax.naming.Context;
import javax.naming.Name;
import javax.naming.NamingException;
import javax.naming.spi.InitialContextFactory;
import javax.naming.spi.ObjectFactory;

import org.apache.naming.ContextBindings;
import org.apache.naming.NamingContext;
import org.apache.naming.SelectorContext;

/**
 * Context factory for the "java:" namespace.
 * 

* Important note : This factory MUST be associated with the "java" URL * prefix, which can be done by either : *

    *
  • Adding a * java.naming.factory.url.pkgs=org.apache.naming property * to the JNDI properties file
  • *
  • Setting an environment variable named Context.URL_PKG_PREFIXES with * its value including the org.apache.naming package name. * More detail about this can be found in the JNDI documentation : * {@link javax.naming.spi.NamingManager#getURLContext(String, java.util.Hashtable)}.
  • *
* * @author Remy Maucherat */ public class javaURLContextFactory implements ObjectFactory, InitialContextFactory { // ----------------------------------------------------------- Constructors // -------------------------------------------------------------- Constants public static final String MAIN = "initialContext"; // ----------------------------------------------------- Instance Variables /** * Initial context. */ protected static volatile Context initialContext = null; // --------------------------------------------------------- Public Methods // -------------------------------------------------- ObjectFactory Methods /** * Create a new Context's instance. * @param obj unused * @param name unused * @param nameCtx unused * @param environment the environment used * @return a selector context if the thread or classloader are bound, and * null otherwise * @throws NamingException not thrown by this implementationm */ @SuppressWarnings("unchecked") @Override public Object getObjectInstance(Object obj, Name name, Context nameCtx, Hashtable environment) throws NamingException { if ((ContextBindings.isThreadBound()) || (ContextBindings.isClassLoaderBound())) { return new SelectorContext((Hashtable)environment); } return null; } /** * Get a new (writable) initial context. * @param environment the environment used * @return a selector context if the thread or classloader are bound, and * a shared writable context otherwise * @throws NamingException not thrown by this implementationm */ @SuppressWarnings("unchecked") @Override public Context getInitialContext(Hashtable environment) throws NamingException { if (ContextBindings.isThreadBound() || (ContextBindings.isClassLoaderBound())) { // Redirect the request to the bound initial context return new SelectorContext( (Hashtable)environment, true); } // If the thread is not bound, return a shared writable context if (initialContext == null) { synchronized(javaURLContextFactory.class) { if (initialContext == null) { initialContext = new NamingContext( (Hashtable)environment, MAIN); } } } return initialContext; } }




© 2015 - 2024 Weber Informatics LLC | Privacy Policy