/*

 * Copyright (c) 1999, 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package com.sun.jndi.url.iiop;

import javax.naming.*;

import javax.naming.spi.*;

import java.util.Hashtable;

import com.sun.jndi.cosnaming.CNCtx;

/**

 * An IIOP URL context factory.

 *

 * @author Rosanna Lee

 */

public class iiopURLContextFactory implements ObjectFactory {

    public Object getObjectInstance(Object urlInfo, Name name, Context nameCtx,

                                    Hashtable<?,?> env) throws Exception {

//System.out.println("iiopURLContextFactory " + urlInfo);

        if (urlInfo == null) {

            return new iiopURLContext(env);

        }

        if (urlInfo instanceof String) {

            return getUsingURL((String)urlInfo, env);

        } else if (urlInfo instanceof String[]) {

            return getUsingURLs((String[])urlInfo, env);

        } else {

            throw (new IllegalArgumentException(

                    "iiopURLContextFactory.getObjectInstance: " +

                    "argument must be a URL String or array of URLs"));

        }

    }

    /**

      * Resolves 'name' into a target context with remaining name.

      * It only resolves the hostname/port number. The remaining name

      * contains the rest of the name found in the URL.

      *

      * For example, with a iiop URL "iiop://localhost:900/rest/of/name",

      * this method resolves "iiop://localhost:900/" to the "NameService"

      * context on for the ORB at 'localhost' on port 900,

      * and returns as the remaining name "rest/of/name".

      */

    static ResolveResult getUsingURLIgnoreRest(String url, Hashtable<?,?> env)

        throws NamingException {

        return CNCtx.createUsingURL(url, env);

    }

    private static Object getUsingURL(String url, Hashtable<?,?> env)

        throws NamingException {

        ResolveResult res = getUsingURLIgnoreRest(url, env);

        Context ctx = (Context)res.getResolvedObj();

        try {

            return ctx.lookup(res.getRemainingName());

        } finally {

            ctx.close();

        }

    }

    private static Object getUsingURLs(String[] urls, Hashtable<?,?> env) {

        for (int i = 0; i < urls.length; i++) {

            String url = urls[i];

            try {

                Object obj = getUsingURL(url, env);

                if (obj != null) {

                    return obj;

                }

            } catch (NamingException e) {

            }

        }

        return null;    // %%% exception??

    }

}