//
// SwitchRMI  Framework
// Copyright (c) 2000-2002 by Michael J. Henderson & Associates.
//
// Michael Henderson
// http://switchrmi.sf.net
// mailto:mikehenderson@dunelm.org.uk
//
// This library is free software.
//
// You may redistribute it and/or modify it under the terms of the GNU
// Lesser General Public License as published by the Free Software Foundation.
//
// Version 2.1 of the license should be included with this distribution in
// the file LICENSE, as well as License.html. If the license is not
// included with this distribution, you may find a copy at the FSF web
// site at 'www.gnu.org' or 'www.fsf.org', or you may write to the
// Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139 USA.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied waranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// $Id: RmiObjectFactoryBase.java,v 1.1 2002/11/11 22:19:48 mikehenderson Exp $
//
package com.mjh.switchrmi.jndi;

import com.mjh.switchrmi.*;

import java.net.*;

import java.util.*;

import javax.naming.*;

import org.apache.log4j.*;

public abstract class RmiObjectFactoryBase
{
    private static final Logger log = 
            Logger.getLogger(RmiObjectFactoryBase.class.getName());

    protected String getClassName(Name name, Hashtable env)
    {
        GenericReferenceable ref = 
                (GenericReferenceable) env.get(name.get(name.size() - 1));

        return ref.getClassName();
    }

    protected Class[] getInterfaces(Name name, Hashtable env, 
                                    ClassLoader loader)
                             throws ClassNotFoundException
    {
        ObjectReferenceable ref = 
                (ObjectReferenceable) env.get(name.get(name.size() - 1));
        String[] strings = ref.getInterfaces();
        Class[] classes = new Class[strings.length];

        for (int i = 0; i < strings.length; i++)
        {
            classes[i] = loader.loadClass(strings[i]);
        }

        return classes;
    }

    protected URL[] getCodebase(Name name, Hashtable env)
                         throws Exception
    {
        URL[] result = null;
        ObjectReferenceable ref = 
                (ObjectReferenceable) env.get(name.get(name.size() - 1));

        if (log.isDebugEnabled())
        {
            log.debug("ref = " + ref);
        }

        String codebase = ref.getCodebase();
        List libs = ref.getLibraries();

        if (log.isDebugEnabled())
        {
            log.debug("libs = " + libs);
        }

        if (codebase != null)
        {
            int numLibs = libs.size();

            if (log.isDebugEnabled())
            {
                log.debug("numLibs = " + numLibs);
            }

            result = new URL[1 + numLibs];
            result[0] = new URL(codebase);

            for (int i = 0; i < numLibs; i++)
            {
                String lib = (String) libs.get(i);

                result[i + 1] = new URL(lib);
            }
        }

        return result;
    }

    protected Object getTypeInfoValue(String typeKey, Name name, Hashtable env)
    {
        ObjectReferenceable ref = 
                (ObjectReferenceable) env.get(name.get(name.size() - 1));

        return ref.getTypeValue(typeKey);
    }
}