/*

 * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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package com.sun.jndi.url.dns;

import java.net.MalformedURLException;

import java.util.Hashtable;

import javax.naming.*;

import javax.naming.spi.ResolveResult;

import com.sun.jndi.dns.*;

import com.sun.jndi.toolkit.url.GenericURLDirContext;

/**

 * A DNS URL context resolves names that are DNS pseudo-URLs.

 * See com.sun.jndi.dns.DnsUrl for a description of the URL format.

 *

 * @author Scott Seligman

 */

public class dnsURLContext extends GenericURLDirContext {

    public dnsURLContext(Hashtable<?,?> env) {

        super(env);

    }

    /**

     * Resolves the host and port of "url" to a root context connected

     * to the named DNS server, and returns the domain name as the

     * remaining name.

     */

    protected ResolveResult getRootURLContext(String url, Hashtable<?,?> env)

            throws NamingException {

        DnsUrl dnsUrl;

        try {

            dnsUrl = new DnsUrl(url);

        } catch (MalformedURLException e) {

            throw new InvalidNameException(e.getMessage());

        }

        DnsUrl[] urls = new DnsUrl[] { dnsUrl };

        String domain = dnsUrl.getDomain();

        return new ResolveResult(

                DnsContextFactory.getContext(".", urls, env),

                new CompositeName().add(domain));

    }

}