//

// 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 com.cloud.utils;

import java.util.ArrayList;

import java.util.Collection;

import java.util.Enumeration;

import java.util.Iterator;

import java.util.List;

public class IteratorUtil {

public static <T> Iterable<T> enumerationAsIterable(final Enumeration<T> e) {

return new Iterable<T>() {

@Override

public Iterator<T> iterator() {

return new Iterator<T>() {

@Override

public boolean hasNext() {

return e.hasMoreElements();

}

@Override

public T next() {

return e.nextElement();

}

@Override

public void remove() {

throw new UnsupportedOperationException();

}

};

}

};

}

public static <T> Enumeration<T> iteratorAsEnumeration(final Iterator<T> it) {

return new Enumeration<T>() {

@Override

public boolean hasMoreElements() {

return it.hasNext();

}

@Override

public T nextElement() {

return it.next();

}

};

}

public static <T extends Comparable<? super T>> List<T> asSortedList(Collection<T> c) {

List<T> list = new ArrayList<T>(c);

java.util.Collections.sort(list);

return list;

}

}