001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.camel.util;
018
019import java.util.Collection;
020import java.util.Deque;
021import java.util.Enumeration;
022import java.util.Hashtable;
023import java.util.Iterator;
024import java.util.List;
025import java.util.Map;
026import java.util.Queue;
027import java.util.Set;
028import java.util.concurrent.Future;
029
030import javax.naming.NamingEnumeration;
031
032/**
033 * Utility methods for type casting.
034 */
035@SuppressWarnings("unchecked")
036public final class CastUtils {
037
038    private CastUtils() {
039        //utility class, never constructed
040    }
041
042    public static <T, U> Map<T, U> cast(Map<?, ?> p) {
043        return (Map<T, U>) p;
044    }
045
046    public static <T, U> Map<T, U> cast(Map<?, ?> p, Class<T> t, Class<U> u) {
047        return (Map<T, U>) p;
048    }
049
050    public static <T> Collection<T> cast(Collection<?> p) {
051        return (Collection<T>) p;
052    }
053
054    public static <T> Collection<T> cast(Collection<?> p, Class<T> cls) {
055        return (Collection<T>) p;
056    }
057
058    public static <T> List<T> cast(List<?> p) {
059        return (List<T>) p;
060    }
061
062    public static <T> List<T> cast(List<?> p, Class<T> cls) {
063        return (List<T>) p;
064    }
065
066    public static <T> Iterator<T> cast(Iterator<?> p) {
067        return (Iterator<T>) p;
068    }
069
070    public static <T> Iterator<T> cast(Iterator<?> p, Class<T> cls) {
071        return (Iterator<T>) p;
072    }
073
074    public static <T> Set<T> cast(Set<?> p) {
075        return (Set<T>) p;
076    }
077
078    public static <T> Set<T> cast(Set<?> p, Class<T> cls) {
079        return (Set<T>) p;
080    }
081
082    public static <T> Queue<T> cast(Queue<?> p) {
083        return (Queue<T>) p;
084    }
085
086    public static <T> Queue<T> cast(Queue<?> p, Class<T> cls) {
087        return (Queue<T>) p;
088    }
089
090    public static <T> Deque<T> cast(Deque<?> p) {
091        return (Deque<T>) p;
092    }
093
094    public static <T> Deque<T> cast(Deque<?> p, Class<T> cls) {
095        return (Deque<T>) p;
096    }
097
098    public static <T, U> Hashtable<T, U> cast(Hashtable<?, ?> p) {
099        return (Hashtable<T, U>) p;
100    }
101
102    public static <T, U> Hashtable<T, U> cast(Hashtable<?, ?> p, Class<T> pc, Class<U> uc) {
103        return (Hashtable<T, U>) p;
104    }
105
106    public static <T, U> Map.Entry<T, U> cast(Map.Entry<?, ?> p) {
107        return (Map.Entry<T, U>) p;
108    }
109
110    public static <T, U> Map.Entry<T, U> cast(Map.Entry<?, ?> p, Class<T> pc, Class<U> uc) {
111        return (Map.Entry<T, U>) p;
112    }
113
114    public static <T> Enumeration<T> cast(Enumeration<?> p) {
115        return (Enumeration<T>) p;
116    }
117
118    public static <T> NamingEnumeration<T> cast(NamingEnumeration<?> p) {
119        return (NamingEnumeration<T>) p;
120    }
121
122    public static <T> Class<T> cast(Class<?> p) {
123        return (Class<T>) p;
124    }
125
126    public static <T> Class<T> cast(Class<?> p, Class<T> cls) {
127        return (Class<T>) p;
128    }
129
130    public static <T> Future<T> cast(Future<?> p) {
131        return (Future<T>) p;
132    }
133}