| /* |
| * 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.sling.testing.mock.osgi; |
| |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.Dictionary; |
| import java.util.Enumeration; |
| import java.util.HashMap; |
| import java.util.Hashtable; |
| import java.util.Map; |
| |
| /** |
| * Map util methods. |
| */ |
| public final class MapUtil { |
| |
| private MapUtil() { |
| // static methods only |
| } |
| |
| /** |
| * Convert map to dictionary. |
| * @param <T> Key |
| * @param <U> Value |
| * @param map Map |
| * @return Dictionary |
| */ |
| public static <T, U> Dictionary<T, U> toDictionary(Map<T, U> map) { |
| if (map == null) { |
| return null; |
| } |
| Hashtable<T, U> hashtable = new Hashtable<>(); |
| for (Map.Entry<T, U> entry : map.entrySet()) { |
| if (entry.getKey() != null && entry.getValue() != null) { |
| hashtable.put(entry.getKey(), entry.getValue()); |
| } |
| } |
| return hashtable; |
| } |
| |
| /** |
| * Convert Dictionary to map |
| * @param <T> Key |
| * @param <U> Value |
| * @param dictionary Dictionary |
| * @return Map |
| */ |
| public static <T, U> Map<T, U> toMap(Dictionary<T, U> dictionary) { |
| if (dictionary == null) { |
| return null; |
| } |
| Map<T, U> map = new HashMap<T, U>(); |
| Enumeration<T> keys = dictionary.keys(); |
| while (keys.hasMoreElements()) { |
| T key = keys.nextElement(); |
| map.put(key, dictionary.get(key)); |
| } |
| return map; |
| } |
| |
| /** |
| * Convert key/value pairs to dictionary |
| * @param args Key/value pairs |
| * @return Dictionary |
| */ |
| public static Dictionary<String, Object> toDictionary(Object... args) { |
| return toDictionary(toMap(args)); |
| } |
| |
| /** |
| * Convert key/value pairs to map |
| * @param args Key/value pairs |
| * @return Map |
| */ |
| @SuppressWarnings("unchecked") |
| public static Map<String, Object> toMap(Object... args) { |
| if (args == null || args.length == 0) { |
| return Collections.emptyMap(); |
| } |
| if (args.length == 1) { |
| if (args[0] instanceof Map) { |
| return (Map)args[0]; |
| } |
| else if (args[0] instanceof Dictionary) { |
| return toMap((Dictionary)args[0]); |
| } |
| } |
| if (args.length % 2 != 0) { |
| throw new IllegalArgumentException("args must be an even number of name/values:" + Arrays.asList(args)); |
| } |
| final Map<String, Object> result = new HashMap<>(); |
| for (int i=0 ; i < args.length; i+=2) { |
| Object key = args[i]; |
| Object value = args[i+1]; |
| if (key != null && value != null) { |
| result.put(key.toString(), value); |
| } |
| } |
| return result; |
| } |
| |
| } |