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;
029import javax.naming.NamingEnumeration;
030
031/**
032 * Utility methods for type casting.
033 */
034@SuppressWarnings("unchecked")
035public final class CastUtils {
036
037    private CastUtils() {
038        //utility class, never constructed
039    }
040
041    public static <T, U> Map<T, U> cast(Map<?, ?> p) {
042        return (Map<T, U>) p;
043    }
044
045    public static <T, U> Map<T, U> cast(Map<?, ?> p, Class<T> t, Class<U> u) {
046        return (Map<T, U>) p;
047    }
048
049    public static <T> Collection<T> cast(Collection<?> p) {
050        return (Collection<T>) p;
051    }
052
053    public static <T> Collection<T> cast(Collection<?> p, Class<T> cls) {
054        return (Collection<T>) p;
055    }
056
057    public static <T> List<T> cast(List<?> p) {
058        return (List<T>) p;
059    }
060
061    public static <T> List<T> cast(List<?> p, Class<T> cls) {
062        return (List<T>) p;
063    }
064
065    public static <T> Iterator<T> cast(Iterator<?> p) {
066        return (Iterator<T>) p;
067    }
068
069    public static <T> Iterator<T> cast(Iterator<?> p, Class<T> cls) {
070        return (Iterator<T>) p;
071    }
072
073    public static <T> Set<T> cast(Set<?> p) {
074        return (Set<T>) p;
075    }
076
077    public static <T> Set<T> cast(Set<?> p, Class<T> cls) {
078        return (Set<T>) p;
079    }
080
081    public static <T> Queue<T> cast(Queue<?> p) {
082        return (Queue<T>) p;
083    }
084
085    public static <T> Queue<T> cast(Queue<?> p, Class<T> cls) {
086        return (Queue<T>) p;
087    }
088
089    public static <T> Deque<T> cast(Deque<?> p) {
090        return (Deque<T>) p;
091    }
092
093    public static <T> Deque<T> cast(Deque<?> p, Class<T> cls) {
094        return (Deque<T>) p;
095    }
096
097    public static <T, U> Hashtable<T, U> cast(Hashtable<?, ?> p) {
098        return (Hashtable<T, U>) p;
099    }
100
101    public static <T, U> Hashtable<T, U> cast(Hashtable<?, ?> p, Class<T> pc, Class<U> uc) {
102        return (Hashtable<T, U>) p;
103    }
104
105    public static <T, U> Map.Entry<T, U> cast(Map.Entry<?, ?> p) {
106        return (Map.Entry<T, U>) p;
107    }
108
109    public static <T, U> Map.Entry<T, U> cast(Map.Entry<?, ?> p, Class<T> pc, Class<U> uc) {
110        return (Map.Entry<T, U>) p;
111    }
112
113    public static <T> Enumeration<T> cast(Enumeration<?> p) {
114        return (Enumeration<T>) p;
115    }
116
117    public static <T> NamingEnumeration<T> cast(NamingEnumeration<?> p) {
118        return (NamingEnumeration<T>) p;
119    }
120
121    public static <T> Class<T> cast(Class<?> p) {
122        return (Class<T>) p;
123    }
124
125    public static <T> Class<T> cast(Class<?> p, Class<T> cls) {
126        return (Class<T>) p;
127    }
128
129    public static <T> Future<T> cast(Future<?> p) {
130        return (Future<T>) p;
131    }
132}