/* * Oscar - An implementation of the OSGi framework. * Copyright (c) 2004, Richard S. Hall * All rights reserved. *   * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: *   *   * Redistributions of source code must retain the above copyright *     notice, this list of conditions and the following disclaimer. *   * Redistributions in binary form must reproduce the above copyright *     notice, this list of conditions and the following disclaimer in *     the documentation and/or other materials provided with the *     distribution. *   * Neither the name of the ungoverned.org nor the names of its *     contributors may be used to endorse or promote products derived *     from this software without specific prior written permission. *   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *  * Contact: Richard S. Hall (heavy@ungoverned.org) * Contributor(s): ***/package org.ungoverned.oscar.util;import java.util.*;/** * This is a simple class that implements a <tt>Dictionary</tt> * from a <tt>Map</tt>. The resulting dictionary is immutatable.**/public class MapToDictionary extends Dictionary{    /**     * Map source.    **/    private Map m_map = null;    public MapToDictionary(Map map)    {        m_map = map;    }    public Enumeration elements()    {        if (m_map == null)        {            return null;        }        return new IteratorToEnumeration(m_map.values().iterator());    }    public Object get(Object key)    {        if (m_map == null)        {            return null;        }        return m_map.get(key);    }    public boolean isEmpty()    {        if (m_map == null)        {            return true;        }        return m_map.isEmpty();    }    public Enumeration keys()    {        if (m_map == null)        {            return null;        }        return new IteratorToEnumeration(m_map.keySet().iterator());    }    public Object put(Object key, Object value)    {        throw new UnsupportedOperationException();    }    public Object remove(Object key)    {        throw new UnsupportedOperationException();    }    public int size()    {        if (m_map == null)        {            return 0;        }        return m_map.size();    }}