| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.felix.connect.felix.framework.util; |
| |
| import java.util.Collections; |
| import java.util.Dictionary; |
| import java.util.Enumeration; |
| import java.util.Map; |
| |
| /** |
| * This is a simple class that implements a {@code Dictionary} from a |
| * {@code Map}. The resulting dictionary is immutable. |
| */ |
| public class MapToDictionary<K, V> extends Dictionary<K, V> |
| { |
| /** |
| * Map source. |
| */ |
| private Map<K, V> m_map = null; |
| |
| public MapToDictionary(Map<K, V> map) |
| { |
| if (map == null) |
| { |
| throw new IllegalArgumentException("Source map cannot be null."); |
| } |
| m_map = map; |
| } |
| |
| @Override |
| public Enumeration<V> elements() |
| { |
| return Collections.enumeration(m_map.values()); |
| } |
| |
| @Override |
| public V get(Object key) |
| { |
| return m_map.get(key); |
| } |
| |
| @Override |
| public boolean isEmpty() |
| { |
| return m_map.isEmpty(); |
| } |
| |
| @Override |
| public Enumeration<K> keys() |
| { |
| return Collections.enumeration(m_map.keySet()); |
| } |
| |
| @Override |
| public V put(K key, V value) |
| { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public V remove(Object key) |
| { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public int size() |
| { |
| return m_map.size(); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return m_map.toString(); |
| } |
| } |