//
// 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;
}
}