MappingIterator.java

/*
 * Copyright 2016 Guillaume Nodet
 *
 * Licensed 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.ops4j.pax.cdi.extension.impl.support;

import java.util.Iterator;
import java.util.function.Function;

public class MappingIterator<U, V> implements Iterator<V> {

    private final Iterator<U> iterator;
    private final Function<U, V> mapper;

    public MappingIterator(Iterator<U> iterator, Function<U, V> mapper) {
        this.iterator = iterator;
        this.mapper = mapper;
    }

    @Override
    public boolean hasNext() {
        return iterator.hasNext();
    }

    @Override
    public V next() {
        return mapper.apply(iterator.next());
    }

}