| /* |
| * 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.commons.collections4.iterators; |
| |
| import java.util.Iterator; |
| |
| import org.apache.commons.collections4.functors.UniquePredicate; |
| |
| /** |
| * A FilterIterator which only returns "unique" Objects. Internally, |
| * the Iterator maintains a Set of objects it has already encountered, |
| * and duplicate Objects are skipped. |
| * |
| * @param <E> the type of elements returned by this iterator. |
| * @since 2.1 |
| */ |
| public class UniqueFilterIterator<E> extends FilterIterator<E> { |
| |
| //------------------------------------------------------------------------- |
| |
| /** |
| * Constructs a new {@code UniqueFilterIterator}. |
| * |
| * @param iterator the iterator to use |
| */ |
| public UniqueFilterIterator(final Iterator<? extends E> iterator) { |
| super(iterator, UniquePredicate.uniquePredicate()); |
| } |
| |
| } |