/*
* 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.java;
import java.util.Hashtable;
import javax.naming.Name;
import javax.naming.Context;
import javax.naming.NamingException;
import javax.naming.spi.ObjectFactory;
import javax.naming.spi.InitialContextFactory;
import org.apache.naming.SelectorContext;
import org.apache.naming.NamingContext;
import org.apache.naming.ContextBindings;
/**
* Context factory for the "java:" namespace.
* <p>
* <b>Important note</b> : This factory MUST be associated with the "java" URL
* prefix, which can be done by either :
* <ul>
* <li>Adding a
* java.naming.factory.url.pkgs=org.apache.catalina.util.naming property
* to the JNDI properties file</li>
* <li>Setting an environment variable named Context.URL_PKG_PREFIXES with
* its value including the org.apache.catalina.util.naming package name.
* More detail about this can be found in the JNDI documentation :
* {@link javax.naming.spi.NamingManager#getURLContext(java.lang.String, java.util.Hashtable)}.</li>
* </ul>
*
* @author Remy Maucherat
* @version $Revision: 1.2 $ $Date: 2004/02/27 14:58:54 $
*/
public class javaURLContextFactory
implements ObjectFactory, InitialContextFactory {
// ----------------------------------------------------------- Constructors
// -------------------------------------------------------------- Constants
public static final String MAIN = "initialContext";
// ----------------------------------------------------- Instance Variables
/**
* Initial context.
*/
protected static Context initialContext = null;
// --------------------------------------------------------- Public Methods
// -------------------------------------------------- ObjectFactory Methods
/**
* Crete a new Context's instance.
*/
public Object getObjectInstance(Object obj, Name name, Context nameCtx,
Hashtable environment)
throws NamingException {
if ((ContextBindings.isThreadBound()) ||
(ContextBindings.isClassLoaderBound())) {
return new SelectorContext(environment);
} else {
return null;
}
}
/**
* Get a new (writable) initial context.
*/
public Context getInitialContext(Hashtable environment)
throws NamingException {
if (ContextBindings.isThreadBound() ||
(ContextBindings.isClassLoaderBound())) {
// Redirect the request to the bound initial context
return new SelectorContext(environment, true);
} else {
// If the thread is not bound, return a shared writable context
if (initialContext == null)
initialContext = new NamingContext(environment, MAIN);
return initialContext;
}
}
}