//
// 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: GenericReferenceable.java,v 1.1 2002/11/11 22:19:48 mikehenderson Exp $
//
package com.mjh.switchrmi;

import java.util.*;

import javax.naming.*;

import org.apache.log4j.*;

public class GenericReferenceable
    implements Referenceable
{
    private static final Logger log = 
            Logger.getLogger(GenericReferenceable.class.getName());
    private String className = "java.lang.Object";
    private String codebase;
    private List libs = new ArrayList();
    private String description;
    private String factoryClassName = 
            "com.mjh.switchrmi.jndi.ObjectFactoryImpl";

    public GenericReferenceable()
    {
    }

    public GenericReferenceable(String name)
    {
        className = name;
    }

    public String toString()
    {
        StringBuffer sb = new StringBuffer();

        sb.append("<GenericReferenceable\n");
        appendMembers(sb);
        sb.append("</GenericReferenceable>");

        return sb.toString();
    }

    protected void appendMembers(StringBuffer sb)
    {
        sb.append("  <className>" + className + "</className>");
        sb.append("  <codebase>" + codebase + "</codebase>");
        sb.append("  <description>" + description + "</description>");
        sb.append("  <factoryClassName>" + factoryClassName
                  + "</factoryClassName>");
        sb.append("  <libs>" + libs + "</libs>");
    }

    public void setClassName(String value)
    {
        className = value;
    }

    public String getClassName()
    {
        return className;
    }

    public void setCodebase(String value)
    {
        codebase = value;
    }

    public String getCodebase()
    {
        return codebase;
    }

    public void addLibrary(String value)
    {
        libs.add(value);
    }

    public List getLibraries()
    {
        return libs;
    }

    public void setDescription(String value)
    {
        description = value;
    }

    public String getDescription()
    {
        return description;
    }

    public void setFactoryClassName(String value)
    {
        factoryClassName = value;
    }

    public String getFactoryClassName()
    {
        return factoryClassName;
    }

    public Reference getReference()
                           throws NamingException
    {
        return new Reference(className, factoryClassName, 
                             buildClasspath(codebase, libs));
    }

    private String buildClasspath(String baseUrl, List libs)
    {
        String path = null;

        if (baseUrl != null)
        {
            if (!baseUrl.endsWith("/"))
            {
                baseUrl += "/";
            }

            StringBuffer sb = new StringBuffer();

            sb.append(baseUrl);

            if (libs.size() > 0)
            {
                sb.append(" ");
            }

            Iterator iter = libs.iterator();

            while (iter.hasNext())
            {
                String lib = (String) iter.next();

                while (lib.startsWith("/"))
                {
                    lib = lib.substring(1);
                }

                sb.append(baseUrl);
                sb.append(lib);

                if (iter.hasNext())
                {
                    sb.append(" ");
                }
            }

            path = sb.toString();
        }

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

        return path;
    }
}