CastUtils.java

/**
 * 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.camel.util;

import java.util.Collection;
import java.util.Deque;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Queue;
import java.util.Set;
import java.util.concurrent.Future;
import javax.naming.NamingEnumeration;

/**
 * Utility methods for type casting.
 */
@SuppressWarnings("unchecked")
public final class CastUtils {

    private CastUtils() {
        //utility class, never constructed
    }

    public static <T, U> Map<T, U> cast(Map<?, ?> p) {
        return (Map<T, U>) p;
    }

    public static <T, U> Map<T, U> cast(Map<?, ?> p, Class<T> t, Class<U> u) {
        return (Map<T, U>) p;
    }

    public static <T> Collection<T> cast(Collection<?> p) {
        return (Collection<T>) p;
    }

    public static <T> Collection<T> cast(Collection<?> p, Class<T> cls) {
        return (Collection<T>) p;
    }

    public static <T> List<T> cast(List<?> p) {
        return (List<T>) p;
    }

    public static <T> List<T> cast(List<?> p, Class<T> cls) {
        return (List<T>) p;
    }

    public static <T> Iterator<T> cast(Iterator<?> p) {
        return (Iterator<T>) p;
    }

    public static <T> Iterator<T> cast(Iterator<?> p, Class<T> cls) {
        return (Iterator<T>) p;
    }

    public static <T> Set<T> cast(Set<?> p) {
        return (Set<T>) p;
    }

    public static <T> Set<T> cast(Set<?> p, Class<T> cls) {
        return (Set<T>) p;
    }

    public static <T> Queue<T> cast(Queue<?> p) {
        return (Queue<T>) p;
    }

    public static <T> Queue<T> cast(Queue<?> p, Class<T> cls) {
        return (Queue<T>) p;
    }

    public static <T> Deque<T> cast(Deque<?> p) {
        return (Deque<T>) p;
    }

    public static <T> Deque<T> cast(Deque<?> p, Class<T> cls) {
        return (Deque<T>) p;
    }

    public static <T, U> Hashtable<T, U> cast(Hashtable<?, ?> p) {
        return (Hashtable<T, U>) p;
    }

    public static <T, U> Hashtable<T, U> cast(Hashtable<?, ?> p, Class<T> pc, Class<U> uc) {
        return (Hashtable<T, U>) p;
    }

    public static <T, U> Map.Entry<T, U> cast(Map.Entry<?, ?> p) {
        return (Map.Entry<T, U>) p;
    }

    public static <T, U> Map.Entry<T, U> cast(Map.Entry<?, ?> p, Class<T> pc, Class<U> uc) {
        return (Map.Entry<T, U>) p;
    }

    public static <T> Enumeration<T> cast(Enumeration<?> p) {
        return (Enumeration<T>) p;
    }

    public static <T> NamingEnumeration<T> cast(NamingEnumeration<?> p) {
        return (NamingEnumeration<T>) p;
    }

    public static <T> Class<T> cast(Class<?> p) {
        return (Class<T>) p;
    }

    public static <T> Class<T> cast(Class<?> p, Class<T> cls) {
        return (Class<T>) p;
    }

    public static <T> Future<T> cast(Future<?> p) {
        return (Future<T>) p;
    }
}