org.eclipse.jetty.jndi.java.javaURLContextFactory Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2012 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.jndi.java;
import java.util.Hashtable;
import javax.naming.Context;
import javax.naming.Name;
import javax.naming.NamingException;
import javax.naming.spi.ObjectFactory;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
/** javaURLContextFactory
* This is the URL context factory for the java: URL.
*
*
Notes
*
*
*
Usage
*
*/
public class javaURLContextFactory implements ObjectFactory
{
private static final Logger LOG = Log.getLogger(javaURLContextFactory.class);
/**
* Either return a new context or the resolution of a url.
*
* @param url an Object value
* @param name a Name value
* @param ctx a Context value
* @param env a Hashtable value
* @return a new context or the resolved object for the url
* @exception Exception if an error occurs
*/
public Object getObjectInstance(Object url, Name name, Context ctx, Hashtable env)
throws Exception
{
// null object means return a root context for doing resolutions
if (url == null)
{
if(LOG.isDebugEnabled())LOG.debug(">>> new root context requested ");
return new javaRootURLContext(env);
}
// return the resolution of the url
if (url instanceof String)
{
if(LOG.isDebugEnabled())LOG.debug(">>> resolution of url "+url+" requested");
Context rootctx = new javaRootURLContext (env);
return rootctx.lookup ((String)url);
}
// return the resolution of at least one of the urls
if (url instanceof String[])
{
if(LOG.isDebugEnabled())LOG.debug(">>> resolution of array of urls requested");
String[] urls = (String[])url;
Context rootctx = new javaRootURLContext (env);
Object object = null;
NamingException e = null;
for (int i=0;(i< urls.length) && (object == null); i++)
{
try
{
object = rootctx.lookup (urls[i]);
}
catch (NamingException x)
{
e = x;
}
}
if (object == null)
throw e;
else
return object;
}
if(LOG.isDebugEnabled())LOG.debug(">>> No idea what to do, so return a new root context anyway");
return new javaRootURLContext (env);
}
};