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 */
017 package org.apache.camel.util;
018
019 import java.util.Collection;
020 import java.util.Deque;
021 import java.util.Enumeration;
022 import java.util.Hashtable;
023 import java.util.Iterator;
024 import java.util.List;
025 import java.util.Map;
026 import java.util.Queue;
027 import java.util.Set;
028 import java.util.concurrent.Future;
029 import javax.naming.NamingEnumeration;
030
031 /**
032 * Utility methods for type casting.
033 */
034 @SuppressWarnings("unchecked")
035 public 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 }